Agronomy ICAR JRF Test - 20 — Agri Master Mind
A 24 litre capacity bucket is filled in 10 seconds by the discharage from a Persian wheel. What is the rate of flow ?
- 0.24.l/sec.
- 2.4 l/sec.
- 144 l/sec.
- Both b and c
The activities of most of the nitrogen fixing organisms is inhibited due to the application of
- Nitrogenous fertilizer
- Phosphatic fertilizer
- Organic manure
- Potassic fertilizer
The nutrient which enhances the biological nitrogen fixation by the microorganism is
- N
- K
- P
- Mg
In compost pit the first stage of decomposition is
- Thermophilic
- Hyper thermophilic
- Mesophilic
- Psychrophilic
Organism most tolerant to soil moisture stress is
- Fungi
- Protozoa
- Bacteria
- Actinomycetes
In leguminous crops, Rhizobium enters root hair dissolving cell wall by
- Cellulase
- Lignolytic enzyme
- Chitinase
- Pectinase
Which of the following is P solubilizing bacteria?
- Pseudomonas striata
- Fusariumoxysporum
- Nitrosomonas
- Thiobacillusferroxidanse
The microorganism predominant in flooded rice soils is
- Bacteria
- Protozoa
- Fungi
- Actinomycetes
The actual seat of nitrogen fixation in symbiotic systems is
- Nodules surface
- Cytochrome
- Membrane envelop
- Bacteroids
The main factors responsible for soil erosion in India are :
- Excessive deforestation
- Overgrazing
- Faulty agricultural practices
- All of these
The natural or normal erosion is also known as :
- Geological erosion
- Accelerated erosion
- Abnormal erosion
- All of these
The water use efficiency of intercropping is----than sole crops :
- Higher
- Lower
- Equal
- None of these
The highest crude protein (%) content is in seed of :
- Prosopisjuliflora
- Albizialebeck
- Accacianilotica
- Prosopis cineraria
When agricultural crops are grown in combination with tree species, the system is known as :
- Silvipasture
- Agrisilviculture
- Agri-silvipasture
- Agrisilvi-aquaculture
In India, shifting cultivation is practiced in :
- NEH region
- Jharkhand
- Andhra Pradesh
- All og the above
The taungya is a ------ word, consisting of taung means hill and ya means cultivation i.e. cultivation in the hills :
- Assamese
- Arabic
- Burmese
- English
The taungya system was introduce to India in 1856 by :
- Blanford
- Brandis
- Kang and Wilson
- King
The instrument dendrometer is used to measure :
- Tree height
- Trunk diameter
- Bole diameter
- None of these
Hypsometer is used to measure :
- Trunk diameter
- Bole diameter
- Tree height
- All of the above
The business of cutting or getting timber or logs from the forest for lumber is called :
- Lumbering
- Logging
- Loding
- Looping
The proportion of area under various crops at a point of time in a unit area is described as :
- Cropping pattern
- Cropping system
- Crop rotation
- Crop diversfication
At present, the main objective of intercropping is :
- Insurance against crop failure
- Higher productivity per unit area
- Stability in production
- Efficient utilization of resources
The intensive cropping is possible with the introduction of :
- Short duration, photo-sensitive varieties
- Short duration, photo-insensitive varieties
- Long duration, photo- insensitive varieties
- Long duration, photo-sensitive varieties
The most efficient crop for N and P utilization is :
- Jute
- Summer rice
- Potato
- Maize
The most efficient crop for K utilization is :
- Groundnut
- Maize
- Jute
- Potato
Which one of the following is the most intensive grazing system :
- Continuous grazing
- Rotational grazing
- Rational grazing
- None of these
The separation of grain or seed from chaff is known as :
- Threshing
- Harvesting
- Drying
- Winnowing
The growing of which crop reduces the population of Pratylenchus eel worms :
- Tomato
- Caster
- Marigold
- Gingelly
The farmers practice monocropping and monoculture due to :
- Climatic conditions
- Socio-economic conditions
- Specialization of a farmer
- All of the above
Fine soils are ---- susceptible to erosion than coarse soils :
- More
- Less
- Equal
- None of these
There are number of fundamental assumptions upon which the validity of stokes law is based. Which one of the assumption given below is not correct?
- The particles must be large in comparison to liquid molecules.
- Particles must not be rigid and smooth
- The velocity of the fall must not exceed a certain critical value so that the viscosity of the liquid remains the only resistance to the fall of the particles
- There must be no slipping between the particle and the liquid
Water potential of pure water is
- 0 bar
- 15 bar
- 1 bar
- 100 bar
If bulk density and particle density of a soil is 1.5 and 3.0 g/cc, what will be its percent porosity?
- 30
- 40
- 50
- 60
Soil moisture characteristic curve depicts relationship between
- soil moisture and tension
- Soil texture and moisture
- Soil temperature and moisture
- Soil moisture and bulk density
Darcy’s law is valid for
- Only saturated
- Only unsaturated flow
- Both saturated and unsaturated flow
- None
Which type of water is readily available to plants?
- Gravitational water
- Capillary water
- Hydroscopic water
- All of the above
The major source of negative charge on humus colloids is due to
- Carboxylic (-COOH) groups
- Enolic (-OH) groups
- Phenolic groups
- All of these
Equivalent acidity of anhydrous ammonia is
- 148
- 128
- 110
- 93
Which of the following competes with micronutrients for binding sites in chelating agent?
- Ca++
- Mg++
- H+
- K+
The critical C: S ratio in carbonaceous material along which immobilization takes place is
- 30:1
- 60:1
- 40 :1
- 50 :1
Atomizer works on the principle of
- Bernoulli’s equation
- Surface tension
- Poisson’s law
- Stokes law
Bray has modified the Mitscherlich’s equation to
- G = f(x1,x2,x3…….xn)
- log (A- y) = log A – C1 b – cx
- dy/dx = (A – y ) C
- Y = A (1-10 – cx)
Which of the following is correct relative order of anion exchange capacity?
- OH->SO42->NO3->H2PO4
- SO42->NO3->H3PO4->OH
- OH ->H2PO4->SO42->NO3-
- SO42-> H2PO4->NO3->CH-
The shallow-rooted crops will require ---- irrigation than deep-rooted crops :
- More frequent
- Less frequent
- Deep
- All of these
Plants with restricted root system show symptoms of :
- Low fertility
- Drought
- Deformed tap roots
- All of these
The water conveyance efficiency (Ec) can be stated as :
- (Wf/Wd) x 100
- (Ws/Wf) x 100
- (Ws/Wn)
- 1- ) x 100
Which efficiency will provide the measure for comparison betweensystems, whether be sprinkler compared to sprinkler, surface compared to surface or sprinkler compare surface irrigation :
- Ea
- Ed
- Ec
- Es
The method of sprinkler irrigation was started in about ----- AD:
- 1800
- 1900
- 1700
- 1950
The method of applying water to the surface of the soil in the form of a spray. Somewhat as ordinary rain, is known as :
- Drip irrigation
- Bubbler irrigation
- Sprinkler irrigation
- Surface irrigation
Which method of irrigation can provide protection against frost :
- Flooding
- Cheek basin
- Drip irrigation
- Sprinkler irrigation
The venefits of trickle irrigation include :
- Minimization of insect, disease and fungus problems
- Less soil crusting
- Water saving (30-50%) compared to other methods
- All of the above
The method of irrigation suitable for row crops is :
- Flooding
- Check basin
- Furrow
- Drip
The implements used for land levelling include :
- Scrapers
- Soil movers
- Both a and b
- None of these
I hectare metre is equal to :
- 10 m3
- 100 m3
- 1,000 m3
- 10,000 m3
The discharge (Q) in l/second of a submerged orifice can be expressed (A =Area, cm2, H = head, cm L = length, cm) :
- 0.027 A
- 0.0184 LH3/2
- 0.0186LH3/2
- 0.0138 H5/2
The contribution of south-west monsoon in total preciptitation of the country is around :
- 400 mham
- 100 mham
- 300 mham
- 200 mham
The water movement in soil comprises of :
- Infiltration
- Redistribution
- Withdrawl
- All of the above
Which type of water movement in the soil is more important from crop production point of view :
- Saturated flow
- Unsaturated flow
- Vapour movement
- All of the above
The volume of water movement in the soil is the highest in :
- Saturated flow
- Unsaturated flow
- Vapour movement
- All of these
Term pH has been coined by…….in ……year
- Schollenberger, 1909
- Lindsay and Norwell, 1809
- Sorenson, 1809
- Sorenson, 1909
Acidity in the soil solution is caused by:
- Free H+ ions in the soil solution
- Free and bound H+ ions
- Free Al3+ ions
- Free Al3+ and H+ ions in the soil solution
Activity =
- Concentration
- Concentration * activity coefficient
- Activity coefficient
- Concentration/ activity coefficient
Unit of pH is:
- Moles/ Litre
- Moles/ kilogram
- millivolt
- None of these
Slope of the pH at 25 ºC is:
- 60 mV/ unit pH
- 59 mV/ unit pH
- 58mV/unit pH
- None of these
Standard buffers for pH calibrations have pH:
- 4.0, 7.2, 9.0
- 9.2, 4.8, 7.0
- 4.0, 7.0, 9.2
- Any of these
Calculate concentration of OH‑ ions at pH=0:
- 1*10-0
- 1*10-1
- 1*10-14
- None of these
NUE of micronutrients, generally under field conditions is:
- 1-2%
- 3-5%
- 10-15%
- 18-20%
Which element is/ are not established as essential for all higher plants?
- Na
- Si
- Co
- All of these
Nutrient mobility concept given by:
- Arnon
- J. V. Liebig
- R. Bray
- N.A Cob
Inherent capacity of soil to supply plant nutrient in adequate amounts in suitable proportions is called:
- Soil fertility
- Soil productivity
- Soil capacity
- None of these
Nitrate reduction takes place in:
- mitochondria
- chloroplast
- cytoplasm
- bacteroid
Conversion of ammonical nitrogen to nitrite in nitrification is done by
- nitrosomonas
- nitrobacter
- bacillus
- pseudomonas
Volatilization is more in which of the following condition of soil:
- Acidic
- Alkaline
- Neutral
- Slightly acidic
The forms of phosphorus, H2PO4- and HPO42- both are equal at pH:
- 6.2
- 6.5
- 7.2
- 7.0
The element which is strongly bound to organic Matter is
- Cu
- Mn
- Fe
- Zn
High specificity of potassium occurs at
- Planar postion
- Interlayer position
- Edges position
- None of these
The fertilizer association of india (FAI) set up in the year
- 1955
- 1957
- 1985
- 1944
Run off and soil loss can be calculated by:
- Ramser formula
- Chepil and woodruff equation
- Stokes formula
- Darcy’s formula
SSP supplies how many primary nutrients:
- 3
- 1
- 2
- 4
A typical compost earthworm is:
- Eisenia foetida
- Allolobophora chlorotica
- Bacillus megatherium
- Eisenia tetradra
Soils formed from which rock are more fertile?
- Acid rocks
- Neutral rocks
- Quartzite rocks
- Basic rocks
Crinkle leaf of cotton occur due to toxicity of
- Mn
- Fe
- B
- Cu
The following element is unique in nature:
- K
- P
- N
- Mg
Non metal among all micronutrients is:
- B
- Cu
- Zn
- None of these
Synthesis and maintenance of chlorophyll is the main function of following nutrient:
- Fe
- Mn
- Zn
- Cu
The following element is called as “energy currency”
- K
- P
- N
- Mg
Fe is applied as foliar spray because:
- Not economical
- More economical
- Plant prefer more
- Easy movement in plant
most deficient micronutrient in Indian soils is
- Mn
- Fe
- Zn
- Mo
Fe is an important component of enzyme:
- nitrogenase
- Nitrate reductase
- Nitrite reductase
- All of the above
Target of liming is usually:
- 5.5-6.5
- 5.0-5.5
- 4.5-5.5
- 4.5-5.0
the only nutrient which is transferred to plant roots in equal amounts by mass flow, diffusion and root interception is:
- Fe
- Mn
- Zn
- Cu
Nomadic element is:
- K
- P
- Ca
- Mg
Bone meal is well suitable for following soils:
- Acid soils
- Neutral soils
- Alkaline soils
- Calcareous soils
lime potential is :
- ½ pCa+ pH2PO4
- pCa + pH2PO4
- Ca + HPO4
- pH- ½ pCa
phosphate potential is :
- ½ pCa+ pH2PO4
- pCa + pH2PO4
- Ca + HPO4
- pH- ½ pCa
The correct order of phosphorus forms taken up by plant is:
- H2PO4- > HPO4-2 > PO4-3
- H2PO4- < HPO4-2 < PO4-3
- both
- None of these
Largest reserve of phosphate is in:
- jhamarkotra
- akola
- malthummeda
- punjab
the anaerobic breakdown of protein rich material is:
- putrefaction
- denitrification
- ammonification
- aminization
Nitrate fertilizer should be applied at:
- Oxidized zone
- Reduced zone
- Both a and b
- No specification
Zero tillage system was first used during 1950 pasture renovation in
- India
- USA
- France
- Japan
National saffron mission launched during
- 2010
- 2011
- 2012
- 2013
GVA share of agriculture and allied sector is
- 18.3%
- 19%
- 20%
- 21%
PM KUSUM launched in the year
- 2019
- 2020
- 2021
- 2022
National food security act was enacted in the year
- 2013
- 2014
- 2015
- 2016
Nareguli paddy is a flood resistance variety of paddy that is grown by farmer of which state
- Karnataka
- Kerela
- MP
- UP
Harit dhara has the potential to reduce cattle methane emission by approximately
- 17-20
- 20-25
- 25-30
- 35-40
APMC full form is
- Agriculture produce market committee
- Agriculture product market committee
- Agriculture produce marketing committee
- Agriculture produce market commission
Environment protection act was enacted in the year
- 1986
- 1976
- 1980
- 1999
MACS 1407 is a variety of
- Soyabean
- Tomato
- Brinjal
- Potato
One nation one ration card launched in year
- 2019
- 2017
- 2018
- 2016
Indian Agriculture Research Institute has demanded legal action against which country for cultivating basmati varieties protected in India
- Afghanistan
- Pakistan
- Myanmar
- Bangladesh
Recently, where was the ‘Agriculture Integrated Command and Control Centre’ inaugurated
- New Delhi
- Chennai
- Chandigarh
- Bhopal
Recently, which country has been elected as the first vice chair of the Food and Agriculture Organization’s (FAO) Committee on Fisheries (COFI) Sub-Committee on Fisheries Management
- Argentina
- India
- Myanmar
- Bhutan
Which institution released the report titled ‘Sand and Dust Storms: A Guide to Mitigation, Adaptation, Policy, and Risk Management Measures in Agriculture
- FAO
- UNEP
- World Bank
- UNESCO
Tag line of Soil Health Card is
- Swasth Dharaa Khet Haraa.
- Swasth Mrida
- Upjao Mrida
- Soil Testing
Full form of ARYA is
- Agriculture Rural Youth Agency
- Applying Rural Youth in Agriculture
- Attracting and Retaining Youths in Agriculture
- Attracting and Recruiting Youth in Agriculture
As per the scheme “Formation & Promotion of Farmer Producer Organisations (FPOs)” how many FPOs are envisaged to be created in the period from 2019-20 to 2023-24
- 10000
- 1000
- 2200
- 22000
What’s the target of Pradhan Mantri Formalisation of Micro food processing Enterprises (PMFME) Scheme
- The scheme aims to set up / upgrade 2 lakh micro food processing units from 2020-21 to 2024-25
- The scheme aims to set up / upgrade 4 lakh micro food processing units from 2020-21 to 2024-25
- The scheme aims to set up / upgrade 6 lakh micro food processing units from 2020-21 to 2024-25
- The scheme aims to set up / upgrade 8 lakh micro food processing units from 2020-21 to 2024-25
Prime Minister Employment Generation Program (PMEGP) is under
- Ministry of Rural development
- Ministry of Jal shakti
- Ministry of MSME
- Ministry of Labour and Employment
NPOP stands for
- National Policy for Organic Production
- National Programme for Organic Production
- National Patent for Organic Production
- None of the above