RPSC Rajasthan AARO Agronomy 2024 Solved Paper (English) — Agri Master Mind
Which of the following is a total stem parasitic weed?
- Cyperus rotundus
- Cuscuta campestris
- Eichhornia crassipes
- Amaranthus viridis
Match List-I (Plough) with List-II (Different Situations) and choose the correct option from the code given below -
List-(I)
Tractor drawn MB plough
Animal drawn MB plough
Disc plough
Country plough
List-(II)
Multipurpose
Deep ploughing and inversion of soil
Incorporation of manure and crop residue
Cutting of weeds or spreading grass and inversion
List-(I)
Tractor drawn MB plough
Animal drawn MB plough
Disc plough
Country plough
List-(II)
Multipurpose
Deep ploughing and inversion of soil
Incorporation of manure and crop residue
Cutting of weeds or spreading grass and inversion
- (i)-(D), (ii)-(A), (iii)-(B), (iv)-(C)
- (i)-(B), (ii)-(C), (iii)-(D), (iv)-(A)
- (i)-(A), (ii)-(B), (iii)-(C), (iv)-(D)
- (i)-(B), (ii)-(D), (iii)-(C), (iv)-(A)
Which of the following is NOT the benefit of crop residue management in field?
- Improved soil health
- Reduced erosion
- Reduced nutrient cycling
- Increased moisture conservation
Which one is NOT the factor affecting insolation?
- Dense vegetation cover
- Sun rays striking angle at the Earth
- Transparent atmosphere
- Daily sunshine hours
Sprinkler irrigation is not suitable for -
- Heavy clayey soils
- Sandy soils
- Loamy soils
- Sandy-loam soils
Cropping system suitable for areas having length of growing period less than 75 days is -
- Intensive cropping
- Perennial vegetation
- Double cropping
- Monocropping
All India Coordinated Research Project for Dryland Agriculture was launched in the year -
Which of the following herbicides is foliar applied without any soil activity?
- Fluridone
- Norflurazon
- Paraquat
- Pendimethalin
What does “Sink strength” in plants refer to?
- The ability of roots to absorb water
- The amount of chlorophyll in a leaf
- The structural rigidity of plant tissues
- The net rate of resource uptake by a defined plant tissue
Which of the following principles of experimental design are used in order to have valid estimates of experimental error?
- Randomization and local control
- Replication and randomization
- Only replication
- Replication and local control
The tensiometer measures the soil moisture tension up to a pressure (bar) of -
The optimum temperature for germination of wheat is -
- °C
- °C
- °C
- °C
Which of the following input(s) is/are permitted without restriction for use in organic farming?
Farmyard manure and Cow urine
Green manure and crop residues
Feather meal
Compost from poultry excreta sourced off-farm
Select the correct answer using the code below -
Farmyard manure and Cow urine
Green manure and crop residues
Feather meal
Compost from poultry excreta sourced off-farm
Select the correct answer using the code below -
- , (2), (3) and (4)
- Only (1) and (2)
- Only (1)
- Only (1), (2) and (4)
The nitrogenase enzyme is involved in process of -
- Nitrogen fixation
- Urea hydrolysis
- Nitrification
- Ammonification
Alachlor herbicide belongs to which family of herbicides?
- Dinitroaniline
- Acetamides
- Phenols
- Carbamate
In India, soil erosion by water and wind together accounts for …… of total area affected by various forms of land degradation.
- %
- %
- %
- %
Which one of the following statement is true?
- In Zingg terraces donor area should be properly levelled.
- In contour bund… suitable side slope is 2.5:1…
- In Zingg terraces length of the field divided into donor area and receiving area usually in the ratio of 2:1.
- A terrace is a combination of ridge and channel…
Which one of the following pairs is correctly matched?
- Winter annual - Panicum repens
- Biennial - Poa annua
- Summer annual - Eclipta alba
- Perennial - Anagallis arvensis
Which of the following is an example of horizontal crop diversification?
- Multiple cropping
- Agroforestry
- Dryland horticulture
- Livestock farming
What is the term used to describe the graphical representation of crop yield in response to increasing nutrient levels?
- Nutrient efficiency index
- Growth curve
- Response curve
- Fertility threshold
Mulching helps in -
- Decreasing soil moisture
- Increasing soil erosion
- Conserving soil moisture
- Increasing pests
………… is the value of the middle most observation in a set of data arranged in order.
- Arithmetic Mean
- Mode
- Median
- Geometric Mean
Which enzyme is primarily involved in detoxification of herbicides through conjugation with glutathione?
- Glutathione-S-transferase
- N-glycosyl transferase
- Glucuronidase
- Glycosidase
Which of the following bacterium is/are involved in the process of nitrification?
- Only Nitrosomonas
- Only Nitrobacter
- Both (1) and (2)
- Pseudomonas
Full form of DGPS is -
- Differential Geographical Positioning System
- Decision Global Positioning System
- Differential Global Positioning System
- Deficit Global Positioning System
Water conveyance efficiency (Ec) can be expressed as -
Movement of fine dust particles smaller than 0.1 mm diameter lifted by air and floating in the atmosphere is known as -
- Suspension
- Rill erosion
- Saltation
- Surface creep
A multinutrient carrier containing macro and/or micronutrients whose sources are from inorganic or organic, which are manufactured through systemic process of granulation is called -
- Coated fertilizer
- Customized fertilizer
- Compound fertilizer
- Complete fertilizer
Seed rate of pigeonpea for sowing long duration varieties is -
- kg/ha
- kg/ha
- kg/ha
- kg/ha
The temperature at which air on being cooled becomes saturated with water vapour is called as -
- Dew point
- Frost point
- Chilling point
- Degree day
Which of the following weed is having ‘Censor’ mechanism of seed dispersal?
- Tribulus terrestris
- Celosia argentea
- Cenchrus biflorus
- Achyranthus aspera
………….. are non-host crops which are planted to make nematode waste their infection potential in a cropping system.
- Intercropping
- Sole crops
- Trap crops
- Decoy crops
What percentage of incoming solar energy is reflected back into space?
- %
- %
- %
- %
Botanical name of Proso millet is -
- Eleusine coracana
- Setaria italica
- Paspalum scrobiculatum
- Panicum miliaceum
On what basis is the Manchurian classification of soybean primarily made?
- Shape of pods
- Size and maturity duration
- Colour of seed coat and embryo
- Shape of the seed
Which of the following is an effect of breaking compacted soil layers through deep ploughing?
- Improved root penetration
- Increased surface runoff
- Reduced soil aeration
- Decreased water retention
Which of the following is NOT the disadvantage of Surface Irrigation Method?
- Rise in water table
- Salinisation
- Waste of water
- Low energy requirement
If the grain yield of barley is 4500 kg/ha and the average evapotranspiration is 45cm, then the water use efficiency of barley would be -
- kg/m³
- kg/m³
- kg/m³
- kg/m³
What chemical process prevents the toxicity of 2,4-DB and MCPB in pulse crops?
- Absence of Beta-oxidase enzyme
- Increased photosynthetic rate
- Rapid conjugation with amino acids
- Enhanced protein binding
Chemicals discovered to antagonize phytotoxicity of specific herbicides to specific plants species are known as -
- Adsorbents
- Surfactant
- Safeners
- Catalyst
The operating water pressure in Drip Irrigation Method is usually
- atm
- atm
- atm
- <1 atm
Which of the following option best describes meteorology?
- Study of long-term climate patterns
- Study of Earth’s physical structure
- Study of weather or atmospheric physics
- Study of ocean currents
World Meteorological Organization is located at -
- Rome
- Geneva
- Washington
- New York
By introducing sprinkler system of irrigation, how much additional area (%) can be brought under irrigation?
Which agro-climatic zone of Rajasthan has the largest area?
- Hyper-arid partial irrigated plains
- Humid South-Eastern plains
- Semi-arid Eastern plains
- Arid Western plains
The optimum soil temperature range for nitrification is -
Microorganism that fixes nitrogen in symbiosis with non-legume trees is
- Azotobacter
- Actinomycetes
- Anabaena
- Azospirillum
Which of the following is an organic mulch used to conserve soil moisture?
- Aluminium foil
- Straw
- Polyethylene
- Wax paper
Which one of the following statements on “puddling” is true?
- Decreases the bulk density of the puddled soil layer.
- Increases the hydraulic conductivity.
- Decreases the retention of more water in soil.
- Increases the bulk density of the puddled soil layer.
Which is considered as an extreme form of minimum tillage?
- Conservation tillage
- Row zone tillage
- Zero tillage
- Conventional tillage
The Indian Council of Agriculture Research started the network project on organic farming in the year -
“CRD” stands for -
- Crop Rotation Design
- Controlled Research Design
- Complete Random Design
- Completely Randomized Design
Kieserite is source of -
- Mn
- Cu
- Mg and S
- Mn and S
The first cutting of lucerne crop should be done -
- days after sowing
- days after sowing
- days after sowing
- days after sowing
Quantity of ‘borax’ recommended for cultivation of groundnut in boron deficient soil is -
- kg/ha
- kg/ha
- kg/ha
- kg/ha
Field irrigation requirement of a crop can be expressed as -
The Critical Soil Test Level concept was propounded by
- Pandey & Sinha
- Arnon & Stout
- Cate & Nelson
- Nelson Tisdale
Which type of crops function as ‘Biological pump’?
- Sugar crops
- Spices crops
- Rotation crops
- Cash crops
Which of the following is NOT the benefit of Integrated Farming System?
- Income round the year
- Increase in input efficiency
- Enhance environmental pollution
- Employment generation
Which of the following are the four main phenomena responsible for depletion of solar radiation?
- Absorption, conduction, convection, reflection
- Transmission, evaporation, diffusion, radiation
- Condensation, evaporation, radiation, convection
- Dispersion, scattering, reflection, absorption
Alluvial soil of Indo-Gangetic Plain comes under which class of Land Capability Classification?
- II
- I
- III
- IV
What happens to the rate of photosynthesis when light intensity increases beyond the light saturation point?
- It decreases sharply.
- It levels off and remains constant.
- It continues to increase.
- It becomes zero.
Change in °C that occurs in one second when temperature gradient changes 1° per second is called as -
- Thermal conductivity
- Thermal induction
- Thermal diffusivity
- Thermal transmittance
The most commonly used electrical resistance instrument for measuring soil moisture was developed by -
- J.W. Holmes (1956)
- M.E. Jensen (1968)
- G.J. Bouyoucos (1949)
- L.A. Richards (1954)
Grey revolution refers to -
- Oilseed production
- Sea food production
- Egg/poultry production
- Fertilizer production
Which belt of following latitudes form hot deserts of the world?
- degree
- degree
- degree
- degree
The average amount of sunlight received on the Earth surface is -
- cal/cm²/min
- cal/cm²/min
- cal/cm²/min
- cal/cm²/min
Which of the following alkaloids are primarily responsible for the toxicity of Argemone mexicana in humans?
Sanguinarine
11-Oxotriacontanoic acid
Swainsonine
Allocryptopine
Choose the correct answer from the options given below -
Sanguinarine
11-Oxotriacontanoic acid
Swainsonine
Allocryptopine
Choose the correct answer from the options given below -
- Only (a), (b) and (d)
- Only (a) and (b)
- Only (c) and (d)
- Only (a), (b) and (c)
……….is defined as any surface area from which rainfall is collected and drained through a common point.
- Watershed
- Farm pond
- Water harvesting
- Gully
Crop diversification helps in -
- Monoculture
- Risk reduction
- Soil degradation
- Diseases increase
The standard weight of a bale of cotton in India is -
- kg
- kg
- kg
- kg
Essentiality of nitrogen element was established by -
- C. Sprengel (1839)
- Theodore de Saussure (1804)
- Priestley et al. (1800)
- Sachs and Knop (1857)
The sensors of remote sensing are operating in the ………………. region.
- Visible-IR
- Linear-IR
- Polar-IR
- Optical-IR
Under the Gramin Krishi Mausam Seva (GKMS), how many Agro-Meteorological Field Units (AMFU) are existing for weather forecast based agro-advisory services to the farmers?
Johnson grass (Sorghum halepense) at its tillering stage is poisonous to animals due to its high ……………. content.
- Prussic acid
- Tannins
- Oxalate
- Potash
The equivalent acidity of urea fertilizer is -
The study of the relationship of agricultural crops and environment is called -
- Auto-ecology
- Agro-climatology
- Agro-ecology
- Agro-meteorology
What is the main role of earthworms in vermicompost preparation?
- Decomposition of organic matter
- Breakdown the organic residues and aeration
- Emission of greenhouse gases
- Mineralization of nutrients
The chemical formula of borax is -
Which ion in calcareous soils is closely related to Fe (iron) stress due to its effect on pH?
-
Chloride (
)
-
Bicarbonate (
)
-
Nitrate (
)
-
Sulphate (
)
Reference crop evapotranspiration was described by -
- Gates and Hanks (1967)
- King et al. (1956)
- Dastane et al. (1966)
- Doorenbos & Pruitt (1973/1975)
Water requirement of bajra crop is -
- mm - 350 mm
- mm - 750 mm
- mm - 600 mm
- mm - 550 mm
Soil water available between field capacity and permanent wilting point is called as -
- Capillary water
- Total water
- Available water
- Gravitational water
Origin place of green gram is -
- Chile
- Canada
- Japan
- India
Which of the following is a yellow sarson (Mustard) variety?
- Pusa Jai Kisan
- Pusa Gold
- Pusa Bahar
- Laxmi
What are arbuscules in the context of mycorrhizal fungi?
- Sites for nutrients transfer from fungi to plant cells
- Structures for nitrogen fixation
- Spores produced for reproduction
- Root hairs that absorb water
Which of the following weed accumulates over 4.0% Potash (K2O) in its dry matter and is known as Potash lover weed?
- Amaranthus spp.
- Setaria spp.
- Melilotus spp.
- Chenopodium spp.
The probability of committing Type II error is generally represented by
-
-
-
- $
Rice blast disease is caused by -
- Pyricularia oryzae
- Xanthomonas oryzae
- Fusarium moniliforme
- Ustilago virens
Which element is essential component of enzyme nitrate reductase?
- Mn
- Zn
- Mo
- Cu
Oil content in sunflower kernel ranges from -
- %
- %
- %
- %
Why should baby corn be harvested within 1-3 days of silk emergence?
- To allow pesticide application
- To ensure the cob is mature and sweet
- To prevent cobs from becoming fibrous, woody and poor in quality
- To enhance seed viability
Which herbicide inhibits photosynthesis in photosystem II?
- Atrazine
- Paraquat
- Glyphosate
- ,4-D
Which of the following fungi is NOT responsible for producing aflatoxins in groundnut?
- Aspergillus nomius
- Rhizopus stolonifer
- Aspergillus parasiticus
- Aspergillus flavus
The liquid waste coming out of bathrooms, showers, sink and kitchen is called as
- Blue water
- Sewage water
- Fresh water
- Grey water
Due to tillage operations, the -
- thermal conductivity increases and heat capacity decreases.
- thermal conductivity decreases and heat capacity increases.
- thermal conductivity increases and heat capacity increases.
- thermal conductivity decreases and heat capacity decreases.
Identify the practice that does NOT align with the principles of conservation agriculture -
- Maintenance of a permanent soil cover by mulch or growing cover crops
- Minimal mechanical soil disturbance
- Diversified crop rotations
- Occasional deep tillage to aerate the soil
Which of the following is a primary tillage implement?
- Harrow
- Mould Board Plough
- Cultivator
- Sweep cultivator
The inhibition of which enzyme in the following reaction results in the disruption of leucine, valine and isoleucine biosynthesis in plants?
- Glutamine synthetase
- EPSPS
- ACCase
- AHAS/ALS
The main agronomic objective of relay cropping of lentil/lathyrus in rice fields is -
- to utilize residual soil nitrogen from rice straw.
- to utilize residual soil moisture and ensure better stand of winter pulses.
- to provide shade to the pulse crop under standing rice.
- to convert monocropping into multiple-cropping for financial subsidy.
Old water harvesting techniques in India presented in the book “Dying Wisdom” written by -
- Agarwal and Narain
- M.L. Jat
- Critchely and Chapman
- Sharda and Sikka
Which of the following is an example of a non-selective herbicide?
- Pendimethalin
- Glyphosate
- ,4-D
- Butachlor
The unit of water use efficiency is -
- ha-cm/day
- kg/ha-cm
- ha-cm/kg
- percent
The first Irrigation Commission was appointed in the year ………………. in India.
Which one of the following pair is NOT correctly matched?
- Abscisic Acid - Grape enlarger
- Chlormequat - Lodging preventer
- Ethephon - Sugarcane ripener
- Indole-3-butyric Acid - Plant cell enlarger
Principal protein of sesame seed is -
- Conarachin
- Globulin
- Gluten
- Arachin
The formula for calculating Potassium Absorption Ratio (PAR) is -
The concept of “doing the right thing in the right place at the right time” is related to -
- Site-specific nutrient management
- Conservation agriculture
- Climate-smart farming
- Precision farming
Salt concentration in soils (mg/L) is calculated by the formula -
“Correlation coefficient” ranges from -
- -100 to +100
- to 100
- -1 to +1
- to 1