IBPS AFO 2015 — Agri Master Mind

✅Explanation: The Turkish grape Sultana (Thompson seedless) is the most widely planted grape in India.It is known for its sweet and seedless characteristics. Thompson Seedless grapes are widely cultivated across various grape-growing regions in the country. This variety is favored for both table consumption and raisin production, contributing significantly to India's grape industry.📌Other Options Explanations:Bangalore Blue, Arka Krishna, Bhokri, Gulabi: These are other popular grape varieties in India.🔑Key Points:Thompson seedless is a variety of Grapes.It is also called sultanina.It is a white oval shape seedless variety of grapes.Maharashtra is the state that produces the largest grapes in India.China is the largest country to grow grapes in the world.

✅Explanation: High-Frequency Tillage (HFT) is a technique used for the reclamation of saline sodic soils. This agricultural practice involves frequent tillage to improve soil structure, drainage, and aeration, ultimately helping to reduce soil salinity and sodicity. It is an effective method to reclaim degraded soils and enhance their fertility for sustainable crop production. 📌Other Options Explanations:GIS (Geographic Information System): is a technology used to capture, store, analyze, and display spatial or geographic data. GIS combines maps with data to visualize patterns, relationships, and trends in a specific area. In agriculture, for instance, GIS helps in mapping soil types, monitoring crop health, and optimizing resource use. It’s widely applied in urban planning, environmental management, and disaster response by allowing users to make data-driven decisions based on geographic insights.SRI (System of Rice Intensification): is a rice farming approach that improves yield while using fewer resources. Key practices include planting young seedlings individually with wider spacing, keeping the soil moist but not flooded, and promoting soil health through organic inputs. SRI helps increase productivity, reduces water use, and improves soil structure, making it both eco-friendly and efficient. FIRB (Furrow Irrigated Raised Bed): FIRB, or Furrow Irrigated Raised Bed planting, is a wheat cultivation method where crops are sown on raised beds with furrows (channels) in between. This technique enhances water efficiency, reduces soil compaction, and improves root aeration, leading to better crop growth. FIRB also helps manage weeds and increases nutrient-use efficiency, making it especially useful in areas with limited water resources.

✅Explanation: Ploughs are primarily used for primary tillage in agriculture. They are designed to break and invert the soil, preparing it for further cultivation. The action of ploughing helps in burying crop residues, turning the soil, and creating a suitable seedbed. Ploughs are particularly effective in breaking compacted soil and improving aeration, drainage, and nutrient availability for crops during the initial stage of soil preparation.📌Other Options Explanations:Cultivator, Planks, Rollers, Harrows: These are used for secondary tillage, which involves further breaking up clods, leveling the land, and creating a fine seedbed.

✅Explanation: Murrah buffalo breed is known for its high content of buttermilk fat. Murrah buffaloes are predominantly found in Haryana, Punjab, and Uttar Pradesh in India, and they are renowned for their excellent milk production with a high fat content, making them a valuable breed for dairy farming. The rich fat content in their milk contributes to the production of high-quality dairy products, including buttermilk with desirable fat levels.Key PointsMurrah is a breed of Buffaloes.For the purpose of making milk, buffalo of the Murrah breed are raised.

✅Explanation: Dieback in citrus and cracking of apples are primarily due to the deficiency of copper. Copper is an essential micronutrient for plants, playing a crucial role in various physiological processes, including lignin formation. Deficiency in copper can lead to weakened cell walls, making plants more susceptible to diseases like dieback in citrus and issues such as fruit cracking in apples.🔑Key Points:Dieback in citrus:Citrus decline, commonly known as ‘dieback’ is also known as ‘chlorosis’ is caused due to deficiency of Copper (Cu).The extent of decline increases with the age of plant and after 20-25 days affected plants become uneconomical.Declining plants are noticed with general sickness, chlorotic leaves, twigs drying and premature leaf fall, reduced fruit size, sudden/gradual dieback of the plants.

✅Explanation: The recommended spacing for a standard variety of apple tree is (d) 20-30 feet. This spacing allows sufficient room for the apple tree to develop a healthy root system, receive proper sunlight, and facilitate air circulation.

✅Explanation: AGMARK, which stands for Agricultural Marketing, is a certification mark that ensures the quality and conformity of agricultural products in India. It encompasses a wide range of commodities, including pulses, vermicelli, cereals, and essential oils, among others, to maintain standards and protect consumer interests.🔑Key Points:It is a certification mark employed on agricultural products in India.It is the quality mark provided under The Agricultural Produce (Grading and Marking) Act, 1937.The Act stipulates the conditions which govern the use of standards and lays down the procedure for grading, marking and packing of agricultural produce.AGMARK is the acronym for Agricultural Marketing. An Agmark symbol is usually found on the packets of rice, flour, pulses, biscuits, oil etc.

✅Explanation: The state with the largest area and production of potatoes in India is Uttar Pradesh (UP). In the year 2023, Uttar Pradesh is still the number one producer of potato in India.Key PointsPotato:Potato (Solanum tuberosum) is the most important food crop in the world.Potato is a temperate crop grown under subtropical conditions in India.The potato is a crop which has always been the ‘poor man’s friend’.Potato is being cultivated in the country for the last more than 300 years.For vegetable purposes, it has become one of the most popular crops in this country.Potatoes are an economical food; they provide a source of low-cost energy to the human diet.Potatoes are a rich source of starch, vitamins especially C and B1 and minerals.Potato is grown almost in all states of India. However, the major potato-growing states are Himachal Pradesh, Punjab, Uttar Pradesh, Madhya Pradesh, Gujarat, Maharashtra, Karnataka, West Bengal, Bihar and Assam.Uttar Pradesh is India's largest potato-producing state.

✅Explanation: VST Tillers Tractors Ltd. is the manufacturer of Mitsubishi Shakti tillers. They have a licensing agreement with Mitsubishi Agricultural Machinery of Japan to produce and market Mitsubishi Shakti brand of compact and utility tractors, including tillers, in India. VST Tillers is known for its collaboration with international agricultural machinery manufacturers, providing reliable and efficient farm equipment to Indian farmers.

✅Explanation: The mango variety that yields, on average, 16 t/ha and can accommodate about 1600 plants in one hectare is Amrapalli. Amrapalli is a popular and productive mango cultivar known for its excellent fruit quality and yield.📌Other Options Explanations:Ratna: This variety is known for its early maturity and good fruit quality.Mallika: This variety is popular for its attractive appearance and good taste.Neelam: This variety is known for its large fruit size and good flavor.Anmol: This variety is known for its late maturity and good fruit quality.Key PointsThe 'Amrapali' mango is a named mango cultivar introduced in 1971.It was developed as a hybrid variety of 'Dasheri' and 'Neelum' by Dr. Pijush Kanti Majumdar at the Indian Agriculture Research Institute in Delhi. The tree is a dwarf, regular-bearer, with clusters of small-sized fruits.Amrapali variety can be used in a High-Density Planting system.

✅Explanation: The cost of growing crops per hectare is commonly referred to as the "Cost of production." This includes various expenses incurred during the cultivation process, such as seeds, fertilizers, pesticides, labor, machinery, and other inputs. Understanding the cost of production is essential for farmers to make informed decisions about crop management, pricing, and overall profitability.📌Other Options Explanations:Marginal cost: This refers to the additional cost incurred in producing one more unit of output.Total cost: This is the sum of all costs incurred in producing a certain quantity of output.Average cost: This is the total cost divided by the quantity of output.Equilibrium cost: This is the cost at which the quantity demanded equals the quantity supplied.

✅Explanation: The Vasantrao Naik Award, given by ICAR (Indian Council of Agricultural Research), is awarded for outstanding research applications in the field of dryland agriculture. Dryland agriculture focuses on sustainable farming practices in regions with limited water availability, making it crucial for addressing the challenges posed by arid and semi-arid climates. This award recognizes contributions that enhance agricultural productivity and resource utilization in such challenging environments.📌Other Options Explanations:Aquaculture: This is the farming of aquatic organisms, such as fish, crustaceans, mollusks, and aquatic plants.Pisciculture: This is a specific type of aquaculture that focuses on the cultivation of fish.

✅Explanation: Organic matter is difficult for laboratories to measure directly, so they usually measure total organic carbon. This is probably why organic matter and organic carbon are often confused and used interchangeably. A conversion factor of 1.72 is commonly used to convert organic carbon to organic matter:Organic matter (%) = Total organic carbon (%) x 1.72This conversion factor assumes organic matter contains 58 % organic carbon. However, this can vary with the type of organic matter, soil type and soil depth. Conversion factors can be as high as 2.50, especially for subsoils,🔑Key Points:Organic matter content of Indian soil is generally < 0.5%Nitrogen content in humus and organic matter is about 5 - 5.5% and carbon ranges from 50 - 58% that gives C:N ratio of 9:1 - 12:1.The status of Nitrogen in general soil is 0.03 - 0.05% that means presence of 1000 kg of N/ha.Organic matter is the key of production and maintain of soil health.Organic matter is found higher in grasslands than forest area.Organic matter is calculated by multiplying the organic carbon values by a conversion factor of 1.724.Organic matter = organic carbon ✕ 1.724.1.724 is called Bemlen factor.

✅Explanation: Internal necrosis in mango and internal cork in apple are both related to boron deficiency. Boron is an essential micronutrient for plants, playing a crucial role in cell wall formation and development. Its deficiency can lead to disorders such as internal necrosis in mango and internal cork in apple, affecting the fruit's quality and structure.🔑Key Points:Internal fruit necrosis was identified as a new physiological disorder of developing mango fruits.It is caused by Boron deficiency.It causes development of dark green colour on the apical part of the fruit and formation of isolated brown areas of indefinite outline in seed and mesocarp of the rapidly growing fruits.The browning of the tissue later on extended to the epicarp and brown black gummy substances exudated from the outer surface of the fruit.Subsequently affected mesocarpic tissues collapse and cavities surrounded by corky tissues developed.

✅Explanation: The pH value of alkali soil is typically higher than 7, and it tends to be alkaline in nature. A pH value of 8 indicates a moderately alkaline soil, which may have implications for the types of crops that can thrive in such conditions. Alkali soils often contain elevated levels of sodium and may require amendments to improve fertility and optimize agricultural productivity.🔑Key Points:Soil pH is used to indicate the acidity (or alkalinity) of soil and is a measure of the concentration of hydrogen ions (H+) in the soil solution.pH is measured from 1 (acidic) to 14 (alkaline), with 7 being neutral, and is measured on a negative logarithmic scale (base 10).The lower the pH, the higher the acidity.6.5 to 7.5- neutral,over 7.5- alkaline,less than 6.5- acidic, andsoils with a pH less than 5.5 are considered strongly acidic.

✅Explanation: Propping in banana refers to option (b) "Giving the support." This agricultural practice involves providing external support to the banana plants, typically by using stakes or other structures, to prevent the plants from falling over or bending under the weight of the fruit. It is a common method to ensure the stability and upright growth of banana plants, especially when they bear heavy fruit bunches.

✅Explanation: The Khapra beetle is a pest specifically associated with stored grain. It is a destructive pest that infests stored grains such as wheat, rice, and other cereals. The larvae of the Khapra beetle are known to feed on the grain, causing damage and contamination.🔑Key Points:Khapra beetle (Trogoderma granarium) is a stored grain pest of Wheat, maize, jowar, rice, pulses, oil seeds and their cakes.

✅Explanation: Milk fever is also known as Parturient Paresis. It is a metabolic disorder that commonly affects dairy cows shortly after giving birth. This condition is characterized by low blood calcium levels, leading to symptoms such as weakness, difficulty standing, and loss of appetite. The term "Parturient Paresis" reflects the connection to the act of giving birth (parturition) and the resulting paralysis or weakness (paresis) associated with the condition.📌Other Options Explanations:Foot and mouth disease: A highly contagious viral disease affecting cloven-hoofed animals.Monogenesis: A mode of inheritance where a trait is controlled by a single gene.Anthrax: A serious infectious disease caused by bacteria, primarily affecting animals but can be transmitted to humans.Lumpy jaw: A chronic infectious disease affecting cattle, caused by bacteria.🔑Key Points:Parturient paresis, also called milk fever, in cattle, a disorder characterized by abnormally low levels of Calcium in the blood.It occurs in cows most commonly within 3 days after they have calved, at a time when the cow’s production of milk has put a severe strain on its calcium stores. The early signs include loss of appetite and depression or restlessness, followed by muscle weakness and spasms of the hindlegs.In acute cases generalized paresis and apparent coma occur, followed by circulatory collapse and death.

✅Explanation: NAFED, or the National Agricultural Cooperative Marketing Federation of India, is the apex organization responsible for marketing cooperative agricultural produce in India. It plays a crucial role in facilitating the marketing and distribution of agricultural commodities, ensuring fair prices for farmers and promoting cooperative efforts in the agricultural sector📌Other Options Explanations:SIDBI: Small Industries Development Bank of India, a development financial institution focused on the promotion, financing, and development of micro, small, and medium enterprises.AGMARK: Agricultural Marketing, a quality certification mark used on agricultural products in India.NACM: National Academy of Cost Management, a professional body for cost accountants in India.🔑Key Points:The Indian National Agricultural Cooperative Marketing Association (NAFED) deals with agricultural marketing.NAFED is the apex body of agriculture cooperative marketing at the national level.National Agricultural Cooperative Marketing Federation of India Ltd. (NAFED) was established on the auspicious day of Gandhi Jayanti on 2nd October 1958. NAFED was set up with the objective to promote the Cooperative marketing of agricultural produce to benefit the farmers.

✅Explanation: The Indian sheep breed known for producing superior quality carpet wool is Chokla. Chokla sheep are often referred to as the "Marino of India" and are recognized for their high-quality wool. This wool is particularly suitable for carpet making due to its fine texture and desirable characteristics.📌Other Options Explanations:Malpura: Known for its meat and milk production.Balangiri: A breed of sheep native to Odisha, primarily valued for its meat.Sonadi: A breed of sheep known for its dual-purpose qualities, including meat and wool production.Bharat merino: A breed of sheep developed through crossbreeding with Merino sheep, known for its fine wool.🔑Key Points:Chokla is a Sheep breed.It is native to India.This breed is generally found in the Rajasthan region of India.This breed of sheep is known as the Best Carpet wool breed.

✅Explanation: The correct answer is (e) 1.8 × 1.8. For maximum yield in Robusta banana varieties, a spacing of 1.8 meters between rows and 1.8 meters between plants within a row is recommended. This spacing allows for adequate sunlight exposure, efficient nutrient uptake, and optimal air circulation, contributing to the overall health and productivity of the banana plants.🔑Key Points:Banana (Musa paradisiaca) belongs to family Musaceae.Centre of origin is humid tropical regions of south east Asia.It requires pH range of 6.5 - 7.5.It grows well in temp. 15 - 35°C with relative humidity 75 - 85%For planting Dwarf cavendish varieties spacing of 1.5 × 1.5 m is adapted which accommodates 4444 plants/ha.For planting Robusta and Nendran varieties spacing of 1.8 × 1.8 m is adapted which accommodates 3086 plants/ha.For planting Rasthali, Poovan, Karpuravalli, Monthan varieties spacing of 2.1 × 2.1 m is adapted which accommodates 2267 plants/ha.General spacing for Kharif season is 1.5 × 1.5 m, 2 × 2 m or 2.5 × 2.5 m.For Rabi season 1.5 × 1.2 m, 1.5 × 1.37 m.

✅Explanation: The ideal time for planting unrooted cuttings of grapes directly in the field is October. During this time, the soil temperature is favourable, and climatic conditions are conducive for the establishment of the cuttings. Planting in October allows the grapevines to take advantage of the upcoming growing season, promoting better root development and overall plant vigor. This timing aligns with the dormancy period of grapevines, ensuring successful establishment and growth.

✅Explanation: Drip irrigation offers the advantages of reducing weed growth, as water is directly supplied to the plant roots, minimizing moisture availability for weed germination. Additionally, it helps in the reduction of soil erosion since the water is applied directly to the root zone, preventing surface runoff.🔑Key Points:Drip irrigationIt is also called trickle irrigation is used in areas with water scarcity and salt problems.It involves the slow application of water, drop by drop to the root zone of a crop, water seeps from these holes drop by drop, hence the name drip irrigation.Water-saving 50-70% as compared to surface irrigation.The difference in water delivery rate between extreme emitters should not exceed 10%Water discharge rate is generally 1-4 lit/hr. at 1.5-2.5 kg/cm2 pressure.The water use efficiency of drip irrigation is 95%Most suitable for widely spaced crops, orchards trees, and greenhouses.Advantage of drip irrigation:​​Increased water use efficiencyHigh crop yieldUniform and better quality of the produceEfficient and economic use or fertilizer through fertigationLess weed growthMinimum damage to the soil structure and reduction in soil erosionUsage in undulating areas and slowly permeable soilLow energy requirement i.e. labor-saving

✅Explanation: The varieties of mangoes, Chausa, Dasheri, and Langra, are available from May to June. During this period, these mango varieties are in season and can be harvested. Mango season in India typically peaks in May and extends into June, making these months the prime time for enjoying these delicious mango varieties.

✅Explanation: Chemical delinting of cotton seeds is commonly performed using (b) Sulphuric acid. This method involves treating the cotton seeds with a dilute solution of sulphuric acid to remove the fuzzy fibers (lint) from the seeds. The acid breaks down the bonding between the lint and the seed, facilitating the separation process. This process is essential for improving the quality of cotton seeds before further processing, such as oil extraction or seed planting.

✅Explanation: Sorosis is a type of multiple fruit where the ovaries of multiple flowers fuse to form a single mass of fruit. Jackfruit (Artocarpus heterophyllus) is an example of a sorosis-type fruit. In jackfruit, the edible part is not derived from the ovary of a single flower but is the result of the fusion of multiple ovaries from separate flowers on the same inflorescence.📌Other Options Explanations:Pear: A pome fruit, where the fleshy part develops from the receptacle.Pomegranate: A berry-like fruit with a leathery rind.Mango: A drupe fruit, with a fleshy outer layer, a stony endocarp, and a seed.Orange: A hesperidium, a type of berry with a leathery rind and juicy segments.🔑Key Points:Sorosis is a sub-type of composite fruits.Sorosis is a fleshy fruit that grows from a group of flowers.These types of fruits develop from catkin, spike and spadix types of inflorescence.E.g.: Jackfruit, pineapple and mulberry.​Jackfruit and breadfruits are two important fruits belonging to the genus Artocarpus. Fruits of this genus are of sorosis type developing from spike type of inflorescence.Morus is a genus of a flowering plant consisting of species of trees that are known as mulberry. Fruits of this genus are of sorosis type developing from catkin type of inflorescence.Ananas is a genus of flowering plants that includes fruits like pineapple. Fruits of this genus are of sorosis type developing from spike type of inflorescence.

✅Explanation: Vallozia Candida is known to be a plant indicator that shows the presence of gold in the soil. Certain plants, called indicator plants, are associated with specific soil conditions or the presence of particular minerals. In this case, Vallozia Candida is considered an indicator for the presence of gold in the soil.📌Other Options Explanations:Astragalus species: Some species of Astragalus are known to accumulate selenium, a toxic element.Viscaria alpina: This plant is often found in alpine and arctic regions.Eriogoniurin ovalifolium: This plant species is native to California.Salsola nitrata: This plant is a halophyte, meaning it can tolerate high levels of salt.

✅Explanation: Ulva, commonly known as sea lettuce, is an algae that is used in monitoring the water quality of estuaries. It is considered an indicator species for assessing environmental conditions, particularly in estuarine ecosystems. The presence, abundance, or health of Ulva can provide insights into the nutrient levels, pollution, and overall water quality of estuarine environments.📌Other Options Explanations:Stigeoclonium: A filamentous green algae often found in freshwater environments.Duniella tertiolecta: A unicellular green alga used in aquaculture and biotechnology.Microscopium: A genus of fungi.Cyclotella cryptia: A type of diatom, a unicellular alga with a silica shell.

✅Explanation: Hyderabad, The National Academy of Agricultural Research and Management (NAARM) is located in Hyderabad. NAARM is an autonomous organization under the Indian Council of Agricultural Research (ICAR), and it serves as a national-level institution for capacity building in agricultural research and education management.Key PointsThe National Academy of Agricultural Research Management was established in 1976.Headquartered in Hyderabad.Objective: To build the capacity of India’s National Agricultural Research System in Research Management by providing online, non-formal, free and interactive learning opportunities.

✅Explanation: Haryana. Kabuli Chana and Udai are varieties of chickpeas that are associated with the state of Haryana. These varieties have likely been developed or cultivated in Haryana, reflecting the region's agricultural practices and efforts in chickpea cultivation.

✅Explanation: Barium carbonate and aluminum phosphate are commonly used in rodenticides. Rodenticides are substances or mixtures used to control or eliminate rodents, such as rats and mice. These chemicals are often incorporated into baits to attract and poison rodents, and substances like barium carbonate and aluminum phosphate may be components of these rodenticide formulations.📌Other Options Explanations:Fumigant: Chemical substances used to kill pests in enclosed spaces.Avicide: A substance used to kill birds.Fungicide: A substance used to kill fungi.Herbicide: A substance used to kill plants.

✅Explanation: Spongy tissue is a disorder that affects the quality of mango fruit. It is particularly associated with the Alphonso cultivar. Alphonso mangoes are known for their excellent flavor and texture, but spongy tissue can be a concern, leading to a soft and sometimes fibrous texture in the fruit. This disorder is influenced by factors such as environmental conditions, ripening practices, and storage conditions.🔑Key Points:It is a major problem in Alphonso, where a pulp patch fails to ripen.Often described as soft centre, white corky tissue or internal breakdown.It is caused due to inactivity of ripening enzymes due to high temperature, convecting heat and post-harvest exposure to sunlight.This disorder is peculiar to South India only.Control:Use of mulching and post-harvest exposure to low temperature between 10 - 15°C for 10 -18 hours has been useful in reducing the malady.

✅Explanation: Nitrogen Deficiency. Nitrogen deficiency symptoms often appear first on older leaves and then progress upward to affect younger leaves. This pattern is because nitrogen, being a mobile nutrient in plants, is easily translocated within the plant from older to younger tissues. When nitrogen is deficient, the plant prioritizes the allocation of available nitrogen to younger, actively growing tissues, resulting in the symptoms manifesting initially in older leaves.🔑Key Points:Nitrogen (N) deficiency causes pale, yellowish-green corn plants with spindly stalks.Because nitrogen is a mobile nutrient in the plant, symptoms begin on the older, lower leaves and progress up the plant if the deficiency persists.Symptoms appear on leaves as a v-shaped yellowing, starting at the tip and progressing down the midrib toward the leaf base.In acute deficiency, flowering is greatly reduced.Lower protein content.Plants mature early, crop quality and yield are often reduced.

✅Explanation: Central Inland fisheries research station was formally established on17 march, 1947 in calcutta under the ministry of Food and Agriculture, Government of India.

✅Explanation: In North India, rivers are perennial throughout the year. This means that these rivers have a continuous flow of water, and they are not subject to significant seasonal fluctuations or drying up during particular periods. The perennial nature of these rivers is attributed to the presence of glaciers, snowmelt, and other water sources that contribute to their sustained flow.

✅Explanation: Zn (Zinc). The condition known as "Little leaf" in mango and cashew is often associated with a deficiency of zinc (Zn). Zinc is an essential micronutrient for plants, and its deficiency can lead to various symptoms, including the characteristic reduction in leaf size, which is why it's referred to as "Little leaf."🔑Key Points:Zinc deficiency is favored by high soil pH; low organic matter soils with high soil pH; cool, wet soil; and high phosphorus fertilizer applications in soils.Examples:Little leaf in mango, litchi and cashew.Fern leaf in potatoKhaira in paddyMottle leaf in citrus

✅Explanation: The pungency in uninjured garlic is due to the presence of an enzyme called Allinase. Allinase is responsible for converting the non-pungent compound Alliin, which is present in garlic, into Allicin. Allicin is the compound responsible for the characteristic pungent odor and flavor of garlic.Key PointsThe pungent smell of garlic is due to the presence of sulfide compound i.e allyl methyl sulfide.Garlic is useful for treating many diseases like blood pressure, heart problems, lower cholesterol, etc.📌Other Options Explanations:Propyl di-sulphide: Contributes to the odor of onions.Memordicoside: A compound found in bitter melon, known for its bitterness.Sulphur oxalate: Not a major contributor to garlic's pungency.Tenin: Tannins are found in various plants and contribute to astringency (a drying sensation in the mouth).

✅Explanation: The movement and filtration of water through soils and permeable rock are termed as "Percolation." Percolation refers to the process by which water moves through the pores and interstitial spaces in soil or permeable rocks, gradually infiltrating downward into the subsurface. This process is crucial for groundwater recharge and the movement of water within the Earth's crust.📌Other Options Explanations:Osmosis: Movement of water across a semi-permeable membrane from a region of higher water concentration to lower.Sedimentation: The process of particles settling to the bottom of a liquid.Neutralization: A chemical reaction between an acid and a base, resulting in a neutral solution.Diffusion: Movement of molecules from an area of higher concentration to lower concentration.Key PointsWater percolation in soil:The process of water percolation in the soil is called Permeate.Percolation is the movement of water through soil, and the percolation rate is the speed at which that movement occurs.The percolation rate is calculated using the following formula:Percolation rate = Amount of water (mL) / percolation time (mins)

✅Explanation: National Centre of Organic Farming is located at Ghaziabad.Key PointsNational Centre of Organic Farming (NCOF) is a nodal organization for the promotion of organic farming under the Ministry of Agriculture & Farmers Welfare.NCOF came into force in 2004, for implementing National Project on Organic Farming (NPOF).It is situated in Ghaziabad, Uttar Pradesh.

✅Explanation: Zinc deficiency is responsible for the symptoms known as "little leaf" in mango and "mottle leaf" in citrus. Zinc is an essential micronutrient for plants, and its deficiency can lead to various physiological disorders and symptoms, including the reduction in leaf size and abnormal leaf coloration observed in these conditions.

✅Explanation: The Indian Institute of Pulses Research (IIPR) is located in Kanpur, Uttar Pradesh, India. It is an agricultural research institute dedicated to the research and development of pulse crops. Pulses are important for sustainable agriculture and nutrition, providing a source of protein and enhancing soil fertility.Key PointsIndian Institute of Pulses Research It was established by the Indian Council of Agricultural Research (ICAR) to carry out basic strategic and applied research on major pulse crops.It was established in the year 1983.It is a government institute located in Kanpur, Uttar Pradesh

✅Explanation: Micropropagation, also known as tissue culture, is most common and popular in banana crops in India. This technique involves growing plants from small tissue samples under sterile conditions. It is particularly advantageous for the rapid multiplication of disease-free and genetically uniform plants.

✅Explanation: Bhima Super is an onion variety suitable for the kharif season, which refers to the summer or monsoon season in India. It is important to select onion varieties that are well-adapted to specific growing seasons, and Bhima Super is specifically recommended for kharif cultivation.📌Other Options Explanations:Bhima Sweta: This is a white onion variety, primarily grown during the rabi (winter) season.Pusa Ridhi: This variety is also better suited for rabi cultivation, known for its long storage potential.

✅Explanation: Trichogramma is a genus of minute polyphagous wasps that are endoparasitoid of insect eggs.🔑Key Points:Trichogramma chilonis is an egg parasitoid and agent under biological control of lepidopteran insect pests.It is effective against bollworms of cotton. Since it attacks the egg stage, damage done by larvae is avoided.Application at 6.25 cc/ha at 15 days interval 3 times from 45 DAS is found effective.Mass production of the parasitoid requires laboratory culture of a host insect and a nucleus culture of the parasitoid.Corcyra cephalonica has been used for mass multiplication of T. chilonis.

✅Explanation: Pramalini, Vikram, and Chakradhar are varieties of lime. These are specific cultivars of lime, which is a citrus fruit. Different varieties of citrus fruits may have distinct taste profiles, nutritional content, and suitability for various growing conditions.

✅Explanation: Clementine is considered one of the finest and most popular varieties of Mandarin orange. Clementines are known for their sweet and easy-to-peel characteristics, making them a favorite among consumers. They are a type of mandarin orange with a deep orange color and a distinct, sweet flavor.📌Other Options Explanations:Encore: A relatively new mandarin variety with a long growing season.Maltese: A specific type of blood orange.Satsuma: Another popular mandarin variety, known for being easy to peel and having a milder flavor than clementines.

✅Explanation: Back hurt and hollow heart in potatoes are physiological disorders that occur due to environmental conditions rather than pests, diseases, or nutrient deficiencies. These disorders are often associated with irregular watering, especially fluctuations in soil moisture levels during the growing season. Inconsistent or inadequate irrigation practices can lead to these physiological disorders in potatoes.🔑Key Points:Black heart is characterised by black colouration at the centre of the tuber.The affected tissues form clearly delineated spots, irregular in pattern, that remain quite firm and sometimes contain small cavities.With seed potato tubers, the diseased plants germinate badly and produce weak plants.It occurs when the soil is saturated with water or during very hot temperatures.A long exposure to temperatures of around 0°C can also cause the damage.Black heart is caused by a lack of oxygen or an excess of CO2

✅Explanation: For major crops grown for fodder purposes, a seed rate of 50 kg/ha is recommended. This rate ensures an adequate density of plants for the production of sufficient fodder. Fodder crops are cultivated to provide feed for livestock, and the appropriate seed rate is essential to achieve optimal yield and quality.

✅Explanation: The Indian Journal of Fertilizer is published by the Fertilizer Association of India (FAI). FAI is an organization that represents the fertilizer industry in India and is involved in promoting the balanced and efficient use of fertilizers for sustainable agriculture.📌Other Options Explanations:NAFED: National Agricultural Cooperative Marketing Federation of India Ltd., focuses on agricultural marketing and procurement.ICAR: Indian Council of Agricultural Research, primarily involved in agricultural research and education.NABARD: National Bank for Agriculture and Rural Development, a development bank focusing on rural finance.NFL: National Fertilizers Limited, a major fertilizer producer in India.

✅Explanation: A till planter is not used for preventing soil erosion. Till planters are typically used for planting crops in various conditions, including mountainous regions, waterlogged regions, and barren regions. They are designed to work in different terrains and facilitate the planting of crops efficiently. However, preventing soil erosion is usually addressed through specific soil conservation methods, such as contour plowing, terracing, cover cropping, and the use of erosion control structures.