ICAR JRF Agronomy Previous Year Paper 2015 — Agri Master Mind
Soil water potential at permanent wilting point is (JRF AGRO-2015)
- -0.1 to 0.3 bar
- -15 bar
- -33 bar
- -60 bar
A minor irrigation project covers an area of (JRF AGRO-2015)
- <2000 ha
- 3000 to 4000 ha
- 5000 to 6000 ha
- 7000 to 8000 ha
Water held by surface tension is called (JRF AGRO-2015)
- Gravitational water
- Capillary water
- Hygroscopic water
- Matrix potential
Scheduling of irrigation water decides (JRF AGRO-2015)
- Time of irrigation
- Quantity of irrigation
- Time and quantity of irrigation
- Quality of irrigation
Water movement in a saturated soil is governed by (JRF AGRO-2015)
- Fick’s law
- Stock’s law
- Darcy’s law
- Motion law
Water requirement is equal to (JRF AGRO-2015)
- IR+S
- IR+ER+S
- ER+S
- ER+S+T
The 17th nutrient added to the list of essential nutrients is (JRF AGRO-2015)
- Boron
- Molybdenum
- Chlorine
- Nickel
Nitrogen supplied by 400 kg of DAP is (JRF AGRO-2015)
- 48 kg
- 72 kg
- 80 kg
- 192 kg
Waterlogging in soil favors the production of (JRF AGRO-2015)
- Oxygen EDTA
- Ethylene
- CFC
- Methane
Which is not a high salt-tolerant crop (JRF AGRO-2015)
- Barley
- Sugar beet
- Cotton
- Field bean
Mulches generally minimize (JRF AGRO-2015)
- Transpiration
- Evaporation
- Absorption of moisture
- Organic matter supply
Unit of water use efficiency is (JRF AGRO-2015)
- kg-ha/mm
- kg/ha-mm
- kg/mm-ha
- ha/kg-mm
Formation of deep cracks is the characteristic feature of (JRF AGRO-2015)
- Alfisol
- Vertisol
- Entisol
- Mollisol
EC of saline soil is (JRF AGRO-2015)
- <2 ds/m
- >2 ds/m
- <4 ds/m
- >4 ds/m
Green manure crop suitable for alkaline and water-logged soil is (JRF AGRO-2015)
- Dhaincha
- Sunhemp
- Guar
- Cowpea
The proportion of area under different crops at a point of time in a unit area is called (JRF AGRO-2015)
- Crop rotation
- Cropping system
- Cropping pattern
- Inter cropping
Which of the following tree grows well in low-lying areas even under rainfed conditions (JRF AGRO-2015)
- Subabul
- Sisoo
- Bamboo
- Casuarina
A neem product used as insect repellent is (JRF AGRO-2015)
- Azadiractin
- Rotenone
- Endrin
- Parathion
The average land holding of a marginal farmer in India is (JRF AGRO-2015)
- <0.5 ha
- 1-2 ha
- <1.0 ha
- 2-4 ha
Maize is generally not grown in (JRF AGRO-2015)
- Uttar Pradesh
- Kerala
- Gujarat
- Maharashtra
Parboiling of rice is a (JRF AGRO-2015)
- Thermal treatment
- Chemical treatment
- Hydrothermal treatment
- Biochemical treatment
Green manuring which produces nodule both on stem and roots is (JRF AGRO-2015)
- Sesbania rostrata
- Agave americana
- Sesbania aculeata
- Crotolaria juncea
A nitrogen-fixing blue-green algae is (JRF AGRO-2015)
- Klebselia
- Spirogyna
- Anabaena
- Rhizobium
Which one is not true for urea (JRF AGRO-2015)
- Synthetic
- Organic compound
- Low solubility
- Straight fertilizer
The amount of DAP which supplies 27 kg N will also supply P2O5 (JRF AGRO-2015)
- 49 kg
- 59 kg
- 69 kg
- 79 kg
Which of the following anaerobic microorganisms fixes atmospheric nitrogen non-symbiotically (JRF AGRO-2015)
- Rhizobium
- Clostridium
- Azotobacter
- Rhizospirillum
VAM improves mainly the uptake of (JRF AGRO-2015)
- N (Nitrogen)
- P (Phosphorus)
- K (Potassium)
- Mo (Molybdenum)
The use of saline water of wells with canal water is called (JRF AGRO-2015)
- Consumptive use of water
- Conjunctive use of water
- Mixed use of water
- None of these
Which of the following group is of pre-emergence herbicide (JRF AGRO-2015)
- Fluchloralin and Metribuzin
- Alachlor and Pendimethalin
- Dalapan and Isoproturon
- MSMA and Pendimethalin
Isoproturon belongs to the group (JRF AGRO-2015)
- Nitriles
- Ureas
- Amides
- Aliphatics
Central Agmark Lab is located at? (JRF AGRO-2015)
- Nagpur
- Mumbai
- Delhi
- Faridabad
Any quantity work out based on sample data is known as? (JRF AGRO-2015)
- Estimate
- Value
- Parameter
- Error
The maximum error degree of freedom for the same number of treatment and replication of an experiment can be achieved in? (JRF AGRO-2015)
- CRD
- RBD
- LSD
- SPD
Raising of the re-growth obtained from roots or stalk after harvest of a crop is termed as? (JRF AGRO-2015)
- Ratoon crop
- Sole crop
- Main crop
- Sub crop
Sowing time for most of the kharif crop is generally? (JRF AGRO-2015)
- June-July
- January-February
- April-May
- October-November
If grain and straw yield are 4 and 6 t/ha, respectively, the harvest index will be? (JRF AGRO-2015)
- 0.33
- 0.4
- 0.6
- 0.67
The term agronomy is derived from? (JRF AGRO-2015)
- Latin
- Greek
- American
- Indian
Geographical area of India is _____ mha? (JRF AGRO-2015)
- 328.8
- 228.8
- 128.8
- 428.8
Which is not a short-day plant? (JRF AGRO-2015)
- Rice
- Sorghum
- Maize
- Wheat
Who proposed the law of minimum? (JRF AGRO-2015)
- Mitscherlich
- Justus Von Liebig
- Blackman
- Wilcox
Bradyrhizobium japonicum is recommended for seed inoculation of? (JRF AGRO-2015)
- Lentil
- Soybean
- Moong
- Pigeon pea
Jute prefers to grow in? (JRF AGRO-2015)
- Cold and arid climate
- Cold and humid climate
- Warm and humid climate
- Warm and semi-arid climate
Optimum temperature for retting of jute is? (JRF AGRO-2015)
- 25 °C
- 30 °C
- 34 °C
- 40 °C
Pyrazolsulfuron ethyl is a? (JRF AGRO-2015)
- Pre-plant incorporated herbicide
- Post-emergence herbicide
- Early post-emergence herbicide
- Pre-emergence herbicide
Pendimethalin is a? (JRF AGRO-2015)
- Herbicide
- Insecticide
- Biofertilizer
- Fungicide
A dose of herbicide which inhibits growth of test plants by 50% is (JRF AGRO-2015)
- LC50
- LD 50
- DT50
- GR50
Chlorimuron ethyl belongs to the herbicide group (JRF AGRO-2015)
- Chloroacetamide
- Thiocarbamate
- Triazines
- Sulfonyl ureas
Sorghum root parasite is (JRF AGRO-2015)
- Orobanche
- Striga
- Loranthus
- Cuscuta
Which weed developed resistance against isoproturon (JRF AGRO-2015)
- Phalaris minor
- Chenopodium album
- Melilotus alba
- Anagallis arvensis
A non-selective translocated herbicide is (JRF AGRO-2015)
- Paraquat
- Diquat
- Dicamba
- Glyphosate
1000 seed weight of Phalaris minor is (JRF AGRO-2015)
- 40g
- 22g
- 4g
- 2g
Photorespiration involves (JRF AGRO-2015)
- Kreb's cycle
- Calvin cycle
- Glycolate cycle
- CAM cycle
Which is a C3 plant (JRF AGRO-2015)
- Maize
- Sorghum
- Sugarcane
- Wheat
Poisonous alkaloid in castor is (JRF AGRO-2015)
- Ricin
- NO3
- Oxalate
- Saponin
Protein content of soybean grain is (JRF AGRO-2015)
- 0.5
- 0.45
- 0.42
- 0.35
Indian Grassland and Fodder Research Institute is located at (JRF AGRO-2015)
- Dehradun
- Jhansi
- Jorhat
- Jodhpur
Queen of cereals is (JRF AGRO-2015)
- Maize
- Rice
- Wheat
- Sorghum
The fruit of mustard is called (JRF AGRO-2015)
- Pods
- Siliqua
- Capsule
- Earhead
An underground stem of potato is known as (JRF AGRO-2015)
- Tuber
- Pseudo stem
- Rhizome
- Pseudo roots
Major rainfed wheat zone is (JRF AGRO-2015)
- North western plain
- North eastern plain
- Central zone
- Peninsular zone
2,4-D is selective herbicide for (JRF AGRO-2015)
- Ground nut
- Cotton
- Wheat
- Sesame
Non-selective foliage active contact herbicide is (JRF AGRO-2015)
- Glyphosate
- Paraquat
- Trifluralin
- Alachlor
Marigold is grown as trap crop in cotton and pigeon pea to control (JRF AGRO-2015)
- Helicoverpa
- Jassids
- Spodoptera
- Red hairy caterpillar
The head office of IFOAM is located in (JRF AGRO-2015)
- India
- China
- Brazil
- Germany
When moisture content at field capacity is 18% and at permanent wilting point is 6%, 50% available moisture will be (JRF AGRO-2015)
- 0.08
- 0.1
- 0.06
- 0.14
In most of the cases, FC represents the water held at a tension of? (JRF AGRO-2015)
- 10 atm
- 5 atm
- 2 atm
- 1/3 atm
The ratio between evapotranspiration of the crop and potential evapotranspiration is called? (JRF AGRO-2015)
- Water requirement
- Irrigation coefficient
- Crop coefficient
- Water use efficiency
Moisture percent by weight of soil having if moist soil weight is 225 g and weight of dry soil is 200 g? (JRF AGRO-2015)
- 10
- 25
- 12.5
- 15
The nutrient with a key role in biological nitrogen fixation is? (JRF AGRO-2015)
- Nitrogen
- Phosphorus
- Chlorine
- Molybdenum
Most suitable form of N for flooded rice soil is? (JRF AGRO-2015)
- Ammonium
- Nitrate
- Amide
- Ammonia
The critical limit for NO₃⁻-N (mg/litre) in drinking water (as per WHO standard) is? (JRF AGRO-2015)
- 5
- 10
- 15
- 20
C:N ratio of ideal soil is? (JRF AGRO-2015)
- 0.417361111111111
- 0.625694444444444
- 0.834027777777778
- 1.04236111111111
Seed potato dormancy is broken by? (JRF AGRO-2015)
- Ethrel
- Thiourea
- IAA
- NAA
Dapog method of nursery raising is followed in? (JRF AGRO-2015)
- Tobacco
- Paddy
- Bajra
- Onion
Green ear disease of pearl millet is caused by? (JRF AGRO-2015)
- Peronospora parasitica
- Plasmopara viticola
- Pseudoperonospora cubansis
- Sclerospora graminicola
Dwarfing gene in rice was taken from? (JRF AGRO-2015)
- Nif gene
- Norin
- Dee-geo-woo-gen
- Proteina
The most critical stage for irrigation in wheat is? (JRF AGRO-2015)
- CRI
- Tillering
- Leaf jointing
- Dough
Zea mays var. identata is? (JRF AGRO-2015)
- Dent corn
- Pop corn
- Pod corn
- Flint corn
Sorghum forage poisoning is caused by? (JRF AGRO-2015)
- Humic acid
- HCN
- Oxalic acid
- Gibberellic acid
Rainfall during flowering in pigeon pea causes? (JRF AGRO-2015)
- Better pollination
- Better pod development
- Better resistance to insect pest
- Poor pollination and poor pod development
Jute fibre is obtained from? (JRF AGRO-2015)
- Xylem
- Secondary phloem
- Leaves
- Parenchyma
Sugar beet belongs to family? (JRF AGRO-2015)
- Poaceae
- Papilionaceae
- Malvaceae
- Chenopodiaceae
Pusa Jai Kisan (Bio-902) is a variety of? (JRF AGRO-2015)
- Tomato
- Brinjal
- Mustard
- Safflower
One bale of jute is? (JRF AGRO-2015)
- 170 kg
- 180 kg
- 190 kg
- 200 kg
Which process in tobacco is performed after harvesting? (JRF AGRO-2015)
- Topping
- De-suckering
- Nipping
- Curing
When fertility varies in two directions, the most suitable experimental design to be used is? (JRF AGRO-2015)
- Split plot design
- Completely randomized design
- Latin square design
- Randomized block design
False smut is a disease of? (JRF AGRO-2015)
- Wheat
- Barley
- Rice
- Millets
The use of synthetic chemicals is prohibited in? (JRF AGRO-2015)
- Conservation farming
- Intensive farming
- Integrated farming
- Organic farming
Which crop does not contribute to food grain production? (JRF AGRO-2015)
- Wheat
- Chickpea
- Rice
- Soybean
Among the following cereals, which has the lowest protein? (JRF AGRO-2015)
- Wheat
- Maize
- Rice
- Sorghum
Japonica species of rice is grown in? (JRF AGRO-2015)
- Japan
- Indonesia
- Malaysia
- Sri Lanka
Which is a non-monetary input? (JRF AGRO-2015)
- Chemical weed control
- Irrigation
- Fertilizer
- Timely input application
The doors of Stevenson Screen face the direction? (JRF AGRO-2015)
- North
- South
- West
- East
The ratio of organic carbon to organic matter in soil is? (JRF AGRO-2015)
- 7.15555555555556E-04
- 7.14398148148148E-04
- 7.13240740740741E-04
- 7.12083333333333E-04
Soils with high pH are generally deficient in? (JRF AGRO-2015)
- B & Fe
- Zn & Mn
- Cu & Mo
- Ca & Mg
Among the following, which textured class has the lowest sand content? (JRF AGRO-2015)
- Loamy sand
- Loam
- Sandy loam
- Silt loam
The rotation intensity of rice-wheat-rice-fallow rotation will be? (JRF AGRO-2015)
- 1.33
- 1.5
- 1.66
- 2
In conservation tillage, the minimum land surface covered by crop residue is? (JRF AGRO-2015)
- 0.2
- 0.3
- 0.9
- 1
TZ test is used to determine? (JRF AGRO-2015)
- Seed purity
- Seed quality
- Seed germination
- Seed viability
Photosynthetically active radiation (µm) is? (JRF AGRO-2015)
- 0.4 to 0.7
- 1.0 to 4.0
- 0.1 to 0.3
- 4.0 to 7.0
The longest day of the year is? (JRF AGRO-2015)
- 23rd Sept.
- 21st June
- 21st December
- 23rd March
The rate of decrease of temperature with height is known as? (JRF AGRO-2015)
- Lapse rate
- Inversion
- Dry inversion
- Wet inversion
Red colour of soil is associated with? (JRF AGRO-2015)
- Calcium
- Ferric oxide
- Silica
- Lime
Particle density of soil is always.....bulk density in cultivated soil? (JRF AGRO-2015)
- Less than
- Equal to
- Greater than
- Less or equal to
The factor for conversion for ppm to kg/ha is? (JRF AGRO-2015)
- 2.29
- 2.24
- 1.2
- 0.0862
Most of the gaseous interchange in soil occurs by? (JRF AGRO-2015)
- Uptake
- Mass flow
- Diffusion
- Interception
Which of the following diseases is associated with the invention of Bordeaux mixture? (JRF AGRO-2015)
- Downy mildew of onion
- Downy mildew of grape
- Downy mildew of pearl millet
- Downy mildew of apple
The fungi used as a bio-control agent of plant disease is? (JRF AGRO-2015)
- Beauveria bassiana
- Metarhizium anisopliae
- Verticillium lacani
- Trichoderma harzianum
Higher soil pH increases the availability of? (JRF AGRO-2015)
- Fe
- Mn
- Zn
- Mo
The state having the highest forest area is? (JRF AGRO-2015)
- Sikkim
- MP
- Karnataka
- UP
Species least suitable for agroforestry system in dry land is? (JRF AGRO-2015)
- Acacia tortilis
- Zizyphus mauritiana
- Subabul
- Terminalia arjuna
The ICRAF headquarters are at? (JRF AGRO-2015)
- Nairobi
- Jakarta
- Rome
- Bangkok
The land use system involving trees combined with crop and animals is termed as? (JRF AGRO-2015)
- Agroforestry
- Sustainable forest management
- Social forestry
- Farm Forestry
Which is not a timber yielding tree species? (JRF AGRO-2015)
- Teak
- Subabul
- Rosewood
- Sissoo
Triticale is inter-generic hybrid of? (JRF AGRO-2015)
- Rice and Maize
- Wheat and Rice
- Wheat and Rye
- Wheat and Maize
Strictly self-pollinated crop is? (JRF AGRO-2015)
- Maize
- Castor
- Bajra
- Rice
Common bread wheat (n=42) is? (JRF AGRO-2015)
- Hexaploid
- Tetraploid
- Triploid
- Diploid
The inflorescence of sunflower is called? (JRF AGRO-2015)
- Panicle
- Arrow
- Capitulum
- Siliqua
Water shoots pertain to? (JRF AGRO-2015)
- Jute
- Sugarcane
- Rice
- Cotton
The botanical name of Spear mint is? (JRF AGRO-2015)
- Mentha arvensis
- Mentabe piperata
- Mentha asiatica
- Mentha spicata
Apical dominance in plants is due to the presence of? (JRF AGRO-2015)
- Cytokinin
- GA (Gibberellin)
- Ethylene
- Auxin
Reproductive phase of rice begins with? (JRF AGRO-2015)
- Tillering
- Heading
- Panicle
- Anthesis
Quality protein maize is rich in? (JRF AGRO-2015)
- Lysine
- Cysteine
- Methionine
- Gluten
Flavour of lemon grass is due to? (JRF AGRO-2015)
- Geraniol
- Citral
- Menthol
- Agallol
Which one is not the criterion of SRI? (JRF AGRO-2015)
- Use of young seedling
- Single seedling per hill
- Dense planting
- Irrigation at hair line cracks
Double zero type variety belongs to? (JRF AGRO-2015)
- Mustard
- Sorghum
- Linseed
- Barley