ICAR JRF Agronomy Previous Year Paper 2019 — Agri Master Mind
Probability take values from (JRF AGRO-2019)
- 123
- 123
- 0 to +1
- -1 to +1
Khaira disease in rice is caused due to (JRF AGRO-2019)
- Bacterial blight
- Molybdenum
- Zinc deficiency
- Iron deficiency
A gene that has masking effect on the other gene controlling the same trait is called? (JRF AGRO-2019)
- Recessive gene
- Hypostati gene
- Epistatic gene
- Major gene
Plant release O₂ during (JRF AGRO-2019)
- Light reaction
- Dark reaction
- Respiration
- Transpiration
The first commercial hybrid of rapeseed mustard developed on the basis of four CMS system was? (JRF AGRO-2019)
- PGSH-51
- NRCHB-506
- DMH-1
- PAC-432
Seed viability of groundnut can be improved by (JRF AGRO-2019)
- Sun drying of pods after harvesting
- Shade drying of pods after harvesting
- Oven drying of pods after harvesting
- Drying of pods in the plants itself before harvest
Rice inflorescence has got? (JRF AGRO-2019)
- 5 stamens
- 6 stamens
- 4 stamens
- 3 stamens
Buck wheat belongs to family? (JRF AGRO-2019)
- Gramineae
- Tiliaceae
- Polygonaceae
- Poaceae
Seeding of cold cloud is achieved by? (JRF AGRO-2019)
- Water drop technique
- Water spray technique
- Silver iodide seeding
- Potassium iodide seeding
IGFRI is located at? (JRF AGRO-2019)
- Jhansi
- Jorhat
- Jodhpur
- Jaipur
Brassica juncea is? (JRF AGRO-2019)
- Yellow sarson
- Indian mustard
- Karan rai
- Gobhi sarson
The production of groundnut fluctuates mainly due to? (JRF AGRO-2019)
- Excess evaporation
- Excess transpiration
- Erratic distribution of rainfall
- High temperature
A barley plant in a wheat crop is? (JRF AGRO-2019)
- Annual weed
- Rouge weed
- Relative weed
- Absolute weed
Moisture Deficit Index (MDI) in semi-arid climate is? (JRF AGRO-2019)
- 0.0 to 3
- 66.6 to 99.9
- -33.3 to -66.6
- Above 99.9
Brown manuring is used in? (JRF AGRO-2019)
- Rice
- Wheat
- Maize
- Jowar
The primary purpose of blocking in field experiments is to reduce? (JRF AGRO-2019)
- Experimental error
- Block error
- Replication error
- Treatment error
The number of coordinating zones of wheat in India? (JRF AGRO-2019)
- 4
- 5
- 6
- 7
Active ingredient in pendimethalin is? (JRF AGRO-2019)
- 0.33
- 0.3
- 0.27
- 0.35
CAN is? (JRF AGRO-2019)
- An acid forming fertilizer
- A neutral fertilizer
- An alkaline fertilizer
- An organic fertilizer
Leaf Priming is a harvesting technique in? (JRF AGRO-2019)
- Tobacco
- Chickpea
- Sugarcane
- Potato
Optimum temperature for nitrification is? (JRF AGRO-2019)
- 20-25 °C
- 0-25°C
- 25-35°C
- 35-40 °C
The correct sequence of stages of mitosis is? (JRF AGRO-2019)
- Interphase, Prophase and Metaphase
- Interphase, Prophase and Anaphase
- Prophase, Telophase and Anaphase II
- Prophase I, Metaphase I and Telophase II
In IW/CPE ratio rate at 0.6 constant and 6 cm irrigation water requirement for wheat, irrigation is to be given when cumulative pan evaporation reading is? (JRF AGRO-2019)
- 500 mm
- 100 mm
- 300 mm
- 350 mm
Element involved in energy transfer is? (JRF AGRO-2019)
- Al (Aluminum)
- Cu (Copper)
- Mn (Manganese)
- P (Phosphorus)
Demand and supply-based water requirement of a crop is? (JRF AGRO-2019)
- WR=IR+ER
- WR=IR+ER+S
- WR=R-IR
- WR=IR+ER+ET
Crops production is related to? (JRF AGRO-2019)
- Supply of nutrients
- Production of crops
- Management of crops
- Pest management in crops
Sum of the area planted to different crops and harvested in a single year, divided by the total cultivated area and expressed as a percentage is known as? (JRF AGRO-2019)
- Multiple cropping index
- Cropping intensity index
- Cropping intensity
- Rotation intensity
Common rock density is? (JRF AGRO-2019)
- 2.6-2.7 g/cc
- 3.0-3.7 g/cc
- 3.0-3.3 g/cc
- 3.0-3.6 g/cc
Hormone which is also termed as stress hormone in plants is? (JRF AGRO-2019)
- Ethylene
- Auxin
- Gibberellin
- ABA
One molecule of glucose contains? (JRF AGRO-2019)
- 12k cal
- 40 K cal
- 686 K cal
- 343 K cal
In jute, bark fibres are developed from? (JRF AGRO-2019)
- Phloem tissue
- Xylem tissue
- Cortex
- Plasmodesmata
Plants growing under high salt concentration are called as? (JRF AGRO-2019)
- Glyphosate
- Halophytes
- Ephemerals
- Mesophytes
The yearly sequence and spatial arrangement of crops or crops and fallow is known as? (JRF AGRO-2019)
- Cropping system
- Cropping pattern
- Farming system
- Intensive cropping
Neovossia indica causes? (JRF AGRO-2019)
- Loose smut in wheat
- Powdery mildew in pea
- Karnal bunt in wheat
- Ergot in bajra
Multigerm seed is found in which crop? (JRF AGRO-2019)
- Sugarcane
- Sugarbeet
- Cotton
- Sunflower
Decalcifying effect of NH₄Cl in the soil is more than (NH₄)₂SO₄ because of the production of? (JRF AGRO-2019)
- More soluble CaCl₂
- Less soluble CaCl₂
- More soluble CaSO₄
- Less soluble CaSO₄
The ratio of leaf area to ground area is known as? (JRF AGRO-2019)
- Leaf area
- Leaf area index
- Ground area
- Leaf area ratio
The frequency of recombination between two linked genes cannot exceed beyond? (JRF AGRO-2019)
- 0.25
- 0.35
- 0.5
- 0.7
One hectare-cm water equals to? (JRF AGRO-2019)
- 1000 litres
- 10,000 litres
- 1,00,00 litres
- 10,00,000 litres
Which of the following undergoes reduction first just after O₂ is depleted? (JRF AGRO-2019)
- NO₃
- MnO₂
- FeOH₃
- CO₂
Interveinal chlorosis and whitening of leaves are the characteristic features of? (JRF AGRO-2019)
- Nitrogen deficiency
- Zinc deficiency
- Iron deficiency
- Phosphorous deficiency
Current rate of fertilizer consumption in India is? (JRF AGRO-2019)
- 128 kg ha⁻¹
- 138 kg ha⁻¹
- 150 kf ha⁻¹
- 160 kg ha⁻¹
In the population size of 10, the possible number of samples of size 2 will be? (JRF AGRO-2019)
- 45
- 40
- 35
- 56
In India, cotton is grown from? (JRF AGRO-2019)
- 9° to 31° North
- 30° to 40° North
- 35° to 45° North
- 40° to 50° North
Which of the following is a P-solubilizing bacterium? (JRF AGRO-2019)
- PSB
- Clostridium
- VAM
- Azotobactor
If % P₂O₅ in a fertilizer is 46%, P will be? (JRF AGRO-2019)
- 58
- 24.7
- 20.2
- 46.4
Cyclone normally moves at a speed of? (JRF AGRO-2019)
- 400-500 km/day
- 300-400 km/day
- 200-300 km/day
- 100-200 km/day
Optimum temperature required for jute retting is? (JRF AGRO-2019)
- 28°C
- 38°C
- 34°C
- 40°C
The enzyme secreted by the embryo of seeds which induces the germination process is? (JRF AGRO-2019)
- Auxin
- Cytokinin
- Gibberellin
- Ethylene
Alternate host weed for gram caterpillar in red gram is? (JRF AGRO-2019)
- Agropyron repens
- Chenopodium album
- Amaranthus viridis
- Echinochloa sp.
Cell theory (1838) was proposed by? (JRF AGRO-2019)
- Lamark
- August Weismann
- Schleiden and Schwann
- Maupertuis
Cyperus rotundus is a? (JRF AGRO-2019)
- Annual weed
- Biennial weed
- Perennial weed
- Economical weed
Muriate of potash is the name of? (JRF AGRO-2019)
- HCl
- NaCl
- KCl
- NH₄Cl
Saline-Alkali soils have? (JRF AGRO-2019)
- EC > 4, pH > 8.5 & ESP > 15
- EC > 4, pH < 8.5 & ESP < 15
- EC > 4, pH > 8.5 & ESP < 15
- EC < 4, pH > 8.5 & ESP < 15
Wilt-resistant variety of chickpea is? (JRF AGRO-2019)
- K 850
- Pusa 375
- Pusa 362
- Pant 114
Pistia stratiotes is? (JRF AGRO-2019)
- Submerged weeds
- Emerged weed
- Marginal weed
- Floating weed
For Rabi sunflower, irrigation has been found to be optimum at IW:CPE ratio of? (JRF AGRO-2019)
- 0.65
- 0.75
- 0.85
- 0.95
Integrated farming system means? (JRF AGRO-2019)
- Integration of two cropping systems
- Integration of the same enterprises
- Integration of two crops
- Integration of two or more than two enterprises
Shade-loving plants are referred to as? (JRF AGRO-2019)
- Heterophytes
- Sciophytes
- Mesophytes
- Short-day plants
Iron deficiency is common in? (JRF AGRO-2019)
- High pH calcareous soils
- Acidic soils
- Neutral soils
- Strongly acidic soils
Nitrogen content in ammonium sulphate is? (JRF AGRO-2019)
- 0.46
- 0.206
- 0.25
- 0.26
The test between two populations' variances is done by? (JRF AGRO-2019)
- Arithmetic mean
- F-test
- T-test
- Z-test
The decrease in air temperature with increasing height is known as? (JRF AGRO-2019)
- Adiabatic lapse rate
- Lapse rate
- Height lapse rate
- Ionization rate
Cyperus iria is propagated through? (JRF AGRO-2019)
- Stem
- Rhizome
- Seed
- Root
'Dapog' method of nursery is related to? (JRF AGRO-2019)
- Tobacco
- Paddy
- Maize
- Sorghum
Root rot disease in cotton is caused due to? (JRF AGRO-2019)
- Rhizoctonia bataticola
- Fusarium udum
- Xanthomonas campestris
- Colletotrichum falcatum
Ammonium sulfate is? (JRF AGRO-2019)
- An acid-forming fertilizer
- Not an acid-forming fertilizer
- A neutral fertilizer
- A pH-raising fertilizer
Planck's law is related to? (JRF AGRO-2019)
- Radiation
- Gravity
- Infiltration rate
- Crop response
Type of soil which has low permeability? (JRF AGRO-2019)
- Saline
- Alkali
- Acidic
- Laterite
Crop designated as "Queen of cereals" is? (JRF AGRO-2019)
- Paddy
- Maize
- Pearl millet
- Oats
Fertilizer news is published by? (JRF AGRO-2019)
- Soil Science Society of India
- Agronomy Society of India
- ICAR
- Fertilizer Association of India
Moisture content at which paddy yield is reported? (JRF AGRO-2019)
- 10
- 14
- 16
- 18
Safflower needs growing degree days (GDD) for successful production? (JRF AGRO-2019)
- 1500
- 2000
- 2500
- 3000
Chlorophyll absorbs maximum light in? (JRF AGRO-2019)
- UV range
- Red spectrum
- Green spectrum
- IR spectrum
Polarimeter is used for? (JRF AGRO-2019)
- Sucrose estimation
- Nitrogen estimation
- Oil estimation
- Plant/Tree height measurement
Rock Phosphate is suitable for? (JRF AGRO-2019)
- Acidic soils
- Alkali soils
- Saline soils
- All types of soils
Plants appear green because they? (JRF AGRO-2019)
- Reflect green radiation
- Absorb green radiation
- Absorb all radiation
- Reflect all radiation
Variance is the square of? (JRF AGRO-2019)
- Range
- Standard deviation
- Quartile deviation
- Mean deviation
Crop that has nodules both in stem and root? (JRF AGRO-2019)
- Sesbania rostrata
- Viga mungo
- Cajanus cajan
- Glycine max
A cotton plant is considered to be suffering from N stress if petiole nitrate-N of a mature leaf falls below? (JRF AGRO-2019)
- 200 ppm
- 2500 ppm
- 300 ppm
- 3500 ppm
Synthetic auxins are? (JRF AGRO-2019)
- IBA, NAA and 2, 4 D
- 2, 4 D, MCPA and MH
- 2, 4 D, MCPA and PMA
- IAA, IBA and NAA
Apparently, the first inbreeding experiments with maize were those reported by? (JRF AGRO-2019)
- Darwin (1876)
- Shull (1874)
- East (1914)
- Hull (1876)
The 17th nutrient added to the list of essential elements is? (JRF AGRO-2019)
- Boron
- Molybdenum
- Chlorine
- Nickel
The value of r (correlation coefficient) ranges between? (JRF AGRO-2019)
- -1 and 0
- +1 and 0
- +1 and -1
- +0.9 and -0.9
Pusa 209 is a variety of? (JRF AGRO-2019)
- Gram
- Mustard
- Redgram
- Lentil
Availability of which form of P is the highest at pH 6-7? (JRF AGRO-2019)
- H2PO4-
- HPO4^2-
- PO4^3-
- H3PO4
Safe limit of NO₃⁻ (nitrate) content in groundwater is? (JRF AGRO-2019)
- 45-50 mg/litre
- 60-70 mg/litre
- 75-80 mg/litre
- 85-95 mg/litre
Winter rainfall is restricted more to? (JRF AGRO-2019)
- North India
- South India
- Kerala
- Andhra Pradesh
Sunflower is an indicator plant for the deficiency of? (JRF AGRO-2019)
- N (Nitrogen)
- K (Potassium)
- B (Boron)
- ZN (Zinc)
Rice is grown maximum in which season? (JRF AGRO-2019)
- Monsoon (Kharif)
- Autumn
- Rabi
- Summer
Enforced dormancy of weed seeds can be broken by? (JRF AGRO-2019)
- Tillage
- Pre-emergence application of herbicide
- Post-emergence application of herbicide
- Irrigation
Jointing stage in wheat starts how many days after sowing? (JRF AGRO-2019)
- 30-45
- 45-60
- 60-75
- 70-90
Plant micronutrients are? (JRF AGRO-2019)
- Fe, Zn, Mn, Cu & B
- Ca, Zn, Ni & Cl
- Mg, Mn, Cu & Fe
- N, P, K & S
Minor irrigation project area is confined to? (JRF AGRO-2019)
- <2000 ha
- 2500-3000 ha
- 400-5000 ha
- 5500-7500 ha
Boron deficiency first appears on? (JRF AGRO-2019)
- Old leaves only
- Young leaves only
- Both old and young leaves
- Terminus buds
N fixation in root nodules of soybean? (JRF AGRO-2019)
- Begins with the appearance of leghemoglobin
- Begins with the initiation of bacterial division
- Begins after the 7th week of nodule age
- Begins with the partial dissolution of the root cell wall by pectic enzymes
An early maturing variety of sugarcane is? (JRF AGRO-2019)
- CoS 767
- Co 0238
- Co Part 90223
- CoS 88216
Mukta is a variety of? (JRF AGRO-2019)
- Mustard
- Sesame
- Linseed
- Castor
The maximum area and production of chickpea is in? (JRF AGRO-2019)
- U.P.
- Bihar
- M.P.
- Rajasthan
The shell of a groundnut pod is morphologically known as? (JRF AGRO-2019)
- Pericarp
- Kernel
- Testa
- Nut
Optimum temperature for tuberization in potato is? (JRF AGRO-2019)
- <20°C
- 20-25°C
- 25-30°C
- 30-35°C
Insecticide is always to be applied at? (JRF AGRO-2019)
- EIL stage
- ETL stage
- Equilibrium position
- Damage boundary
Mn deficiency occurs in rice grown in? (JRF AGRO-2019)
- Upland soil
- Sandy soil
- Low land soil
- Sandy loam soil
Under conservation tillage, soil aggregate stability (%) increases because of? (JRF AGRO-2019)
- High glomalin production
- Lower glomalin production
- Higher urease production
- Lower urease production
In degraded paddy soil ammonium chloride is? (JRF AGRO-2019)
- Inferior to ammonium sulphate
- Same as that of ammonium sulphate
- Superior to ammonium sulphate
- Not recommended at all
Kind of protein mainly responsible for baking is? (JRF AGRO-2019)
- Albumin
- Globulin
- Prolamin
- Glutamine-gluten
Ammoniacal fertilizer efficiency is maximum when it is applied in? (JRF AGRO-2019)
- Split doses
- Oxidised doses
- All at a time
- Reduced Zone
National Academy of Agricultural Research Management is located at? (JRF AGRO-2019)
- Nagpur
- Hyderabad
- New Delhi
- Karnal
Rice blast is caused by? (JRF AGRO-2019)
- Helminthosporium oryzae
- Rhizoctonia solanai
- Sclerotium oryzae
- Pyricularia oryzae
Moist and Hot Air Treatment (MHAT) is done to check? (JRF AGRO-2019)
- Grassy shoot disease in sugarcane
- Ergot in Bajra
- Downy mildew of maize
- Powdery mildew in pea
Reddening of leaves in cotton is observed due to deficiency of? (JRF AGRO-2019)
- Iron
- Boron
- Magnesium
- Sulphur
Two sister chromatids of each chromosome separate from each other in? (JRF AGRO-2019)
- Anaphase II
- Telophase I
- Diakinesis
- Pachytene
Mechanism of nutrient mobility was given by? (JRF AGRO-2019)
- Patrick
- Bray
- Arnon
- Russel
Water requirement for nursery preparation in rice is? (JRF AGRO-2019)
- 50-200 mm
- 200-300 mm
- 200-350 mm
- 300-400 mm
Day neutral plants are? (JRF AGRO-2019)
- Tomato, Cotton, and Sunflower
- Cucumber, Wheat, and Spinach
- Tobacco, Safflower, and Wheat
- Wheat, Barley, and Berseem
El-Nino refers to? (JRF AGRO-2019)
- Abnormal warming of the ocean and resulting effect on weather
- Reflection of radiation
- Cooling of the ocean
- Southern oscillation
Eichornia crassipes is a? (JRF AGRO-2019)
- Aquatic weed
- Semi-aquatic weed
- Mesophytic weed
- Absolute weed
Agri-silviculture involves? (JRF AGRO-2019)
- Cereals and pulses
- Cereals and oil seeds
- Crops and trees
- Crops and pasture
Isoproturon kills Phalaris minor but does not affect wheat because of the presence of? (JRF AGRO-2019)
- Cytochrome P-450 enzyme
- Cytochrome A-370 enzyme
- Cytochrome enzyme based on processing
- Cytokinin enzyme
Synthesis of proteins based on code in RNA outside the nucleus is? (JRF AGRO-2019)
- Processing
- Transcription
- Translation
- Replication
The cropping system which has the maximum area in India is? (JRF AGRO-2019)
- Rice-Rice
- Rice-Wheat
- Maize-Potato
- Maize-Wheat