SOIL FERTILITY TEST — Agri Master Mind
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
Precursor of indole acetic acid is:
- Tryptophan
- ehtylene
- methionine
- cysteine
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
most widely used feedstock of hydrogen in india used for nitrogen fertilizer is:
- naptha
- coal
- water
- lignite
the only pulse crop does not fix atmospheric nitrogen is:
- rajma
- arhar
- soyabean
- groundnut
main function of nitrification inhibitor is:
- Block oxidation of ammonia to nitrite
- Block oxidation of nitrite to nitrate
- Block amminization
- Block function of both bacteria
slow release nitrogen fertilizer is:
- N-serve
- AM
- Oxamide
- ST
white muscle disease in livestock is caused by:
- Se toxicity
- Se deficiency
- Mn toxicity
- Mg deficiency
Catalyst in haber-bosch process:
- Al
- Cu
- Fe
- Zn
theory of contact exchange was given by:
- Jenny and Overstreet
- Russell
- Troug
- Marshall
the movement of ions to plant roots through:
- diffusion
- Mass flow
- Root interception
- All of these
Aqua regia is the mixture of:
- HNO3+ HCl
- HNO3+ H2SO4
- HNO3+ KCl
- HNO3+K2SO4
In universal soil loss equation K denotes:
- Soil erodibility factor
- Slope-length factor
- Slope gradient
- Rainfall factor
Enrichment of surface water bodies with nutrients is called:
- mineralization
- immobilization
- eutrophication
- denitrification
The first product of hydrolysis of urea is:
- Ammonium carbonate
- Ammonium carbamate
- Ammonium hydroxide
- None of these
The first stable product of hydrolysis of urea is:
- Ammonium carbonate
- Ammonium carbamte
- Ammonium hydroxide
- None of these
Nutrient important for Nodule formation:
- B
- Zn
- Fe
- Cu
Excess of following compound leads akiochi disease in rice:
- S
- H2S
- H2SO4
- SO2
Area of milli watershed is:
- 1-100 ha
- 100- 1,000 ha
- 1000- 10,000 ha
- None of these
Area of mini watershed is:
- 1-100 ha
- 100- 1,000 ha
- 1000- 10,000 ha
- None of these
the nano meter scale is expressed as :
- Feynman scale
- Nano scale
- Nano meter Scale
- No scale designed yet
Father of nanotechnology:
- Richard Feynman
- langmuir
- winogradsky
- None of these
total acidity ( cmol (p+) kg-1) of humic acid is:
- 660
- 1240
- 1400
- 250
E4/E6 ratio of fulvic acid is:
- 3.4
- 7.2
- 4.3
- 4.7
Humic acid is soluble in:
- water
- acid
- Alkaline medium
- None of these
Polyphenol theory of humus formation is given by:
- stevenson
- kononova
- flaig
- All of these
Most lignin decomposing fungi belong to the class:
- deuteromycetes
- basidiomycetes
- both
- actinomycetes
The mean C/N/P/S ratio in soil humus is about :
- 140:10:1.3:1.3
- 140:10:1.3:13
- 140:10:13:1.3
- 140:1.0:1.3:1.3
Quantity factor represents:
- Soil solution quantity
- Measure of soil capacity
- both
- None of these
Most hygroscopic fertilizer is:
- Urea
- Ammonium nitrate
- Ammonium sulfate
- None of these
First industrially made fertilizer:
- SSP
- urea
- MOP
- Ammonium sulfate
Chelated zinc (Zinc-EDTA) contains zinc:
- 5%
- 10%
- 12%
- 15%
The Functional or metabolic nutrients was given by:
- Arnon and stout 1939
- Arnon and stout 1954
- Nicholas 1961
- Nicholas 1964
The equation , log(A-y) = logA -Cx is called as:
- Spillman's equation
- Mitcherlich's equation
- Liebig equation
- Gapon's equation
Whiptail’ in cauliflower is caused by deficiency of which of the following nutrients?
- B
- Mo
- Co
- Na
Necrosis means what ?
- Yellowing of leaves
- Leaf tissue between veins turns yellow while the veins remain green
- Complete drying and death of plant tissue
- Shortened internodes
Interveinal chlorosis - striping is
- Yellowing of leaves
- Leaf tissue between veins turns yellow while the veins remain green
- Complete drying and death of plant tissue
- Shortened internodes
Which of the following is/are the most common symptom(s) of K deficiency?
- Chlorotic mottling between the veins and the marginal scorching of the older leaves
- Leaf tips and margins scorched and necrotic
- Both a and b
- None of the above
Usually deficiency of which nutrients is more in soil if pH increases?
- Fe
- Mn
- Cu
- Zn
- All the above
Compost improves the soil condition
- Physical
- Biological
- Chemical
- All the above
Saline soils are managed by:
- addition of lime
- addition of organic matter
- addition of calcium carbonated
- leaching of soluble salts
Continuous heavy rainfall leads to the formation of:
- saline soil
- acid soil
- sodic soil
- saline alkaline soil
Ammonium sulphate contain:
- 20.6 % N
- 25-28 % N
- 33-38 % N
- 24 % N
Which of the following crop is high salt tolerant:
- Oats
- beans
- sesame
- wheat
[ 1] Lithosequence → a. Soil differ due to PM [ 2] Climo sequence → b. Soil differ due to Climate. [ 3] Clinosequences → c. Soil differ due to variation in degree of slope [ 4 ] Chrono sequence → d. Soil differ due to variation in time.
- a,b,c,d
- a,d,b,c
- a,c,b,d
- d,c,b,a
[ 1 ] Phosphate potential → a. schofield [ 2 ] Eqm Phosphate potential →b. Rammamurthy [ 3 ] critical nutrient concept of available nutrient →c. Catex Nelson [ 4 ] Law of minimum → d. Liebig [ 5 ] A-value → e. Fried & Dean
- a,c,d,e,b
- a,b,c,d,e
- a,b,c,e,d
- a,e,b,c,d
Assertion: Use of fertilizers greatly enhances crop productivity. Reason: Irrigation is very important in increasing crop productivity.
- Both assertion and reason are true and the reason is the correct explanation for the assertion.
- Both the reason and assertion are true but the assertion is not the correct explanation for reason.
- Assertion is true but reason is false.
- Both the reason and assertion are false
Assertion:To replenish the lost nutrients in the soil, quick acting, handy nutrients are applied in the form of fertilizers. Reason : Chemical fertilizer contains the necessary plants nutrients.
- Both assertion and reason are true and the reason is the correct explanation for the assertion.
- Both the reason and assertion are true but the assertion is not the correct explanation for reason.
- Assertion is true but reason is false.
- Both the reason and assertion are false
A- Symbiotic nitrogen fixation occurs in the nodules of leguminous plants. R- Nitrate reductase activity occurs in noduls
- Both A and R are true and the R is the correct explanation for the A.
- Both A and R are true but the R is not the correct explanation for A.
- A is true but R is false.
- A is false but R is true
A- In sandy soil, the nutrient availability is low R- The water holding capacity of sandy soil is poor
- Both A and R are true and the R is the correct explanation for the A.
- Both A and R are true but the R is not the correct explanation for A.
- A is true but R is false.
- A is false but R is true
- Both the R and A are false
A- Low availability of P is a problem in both acidic and alkaline soils R- Soil pH regulates the availabilty of different soil nutrients
- Both A and R are true and the R is the correct explanation for the A.
- Both A and R are true but the R is not the correct explanation for A.
- A is true but R is false.
- A is false but R is true
A-FYM is beneficial in sandy soil as well as clay soil R- FYM contains all the three major nutrients namely on as average 0.5, 0.25 and 0.5% of NPK respectively.
- Both A and R are true and the R is the correct explanation for the A.
- Both A and R are true but the R is not the correct explanation for A.
- A is true but R is false.
- A is false but R is true
A- The complex and mixed fertilizers with the same nutrient contents are equally effective in crop production. R- The complex fertilizers are granular, free flowing and easy to apply whereas fertilizer mixture are physical blend of two or more straight fertilizers mechanically mixed.
- Both A and R are true and the R is the correct explanation for the A.
- Both A and R are true but the R is not the correct explanation for A
- A is true but R is false.
- A is false but R is true
Statements I- Ammonical Nitrogen is more subjected to leaching loss than Nitrate nitrogen Statements II- Nitrate Nitrogen is more subjected to leaching loss than Ammonical nitrogen
- Both statements I and II are true
- Both statements I and II are false
- Statement I is correct but statement II is false
- Statement I is incorrect but statement II is true
A- KCL fertilizers is not used in Rice and Solanaceous crops like Potato and Tobacco. R- Chloride act as an osmolyte interferes with starch and sugar synthensis and reduce the burning quality of tobacco crop.
- Both A and R are true and the R is the correct explanation for the A. 1
- Both A and R are true but the R is not the correct explanation for A.
- A is true but R is false.
- A is false but R is true
A- urea is an organic fertilizer but urea is not used in organic farming R- Urea is a synthetic compound produced in factories.
- Both A and R are true and the R is the correct explanation for the A.
- Both A and R are true but the R is not the correct explanation for A.
- A is true but R is false.
- A is false but R is true
A- During the green revolution both the yield per hectare and area under wheat increased sharply R- India is following the former soviet pattern of agricultural development.
- Both A and R are true and the R is the correct explanation for the A.
- Both A and R are true but the R is not the correct explanation for A.
- A is true but R is false.
- A is false but R is true
A- Granular structure is a characterisitic of grassland soils R- Granular soils are rich in organic matter content
- Both A and R are true and the R is the correct explanation for the A.
- Both A and R are true but the R is not the correct explanation for A.
- A is true but R is false.
- A is false but R is true
A- Organic mannures with wider C/N ratio when added to the soil, decompose rapidly in soil and increase the plant available nitrogen. R- Organic acids are produced during decomposition of organic manures.
- Both A and R are true and the R is the correct explanation for the A.
- Both A and R are true but the R is not the correct explanation for A.
- A is true but R is false.
- A is false but R is true
- Both the R and A are false
A- Green Manuring in soil results in better utilisation of Phosphorus by subsequent crops R- Decomposition of green manure release CO2 which dissolve in water to form carbonic acid which in turn helps dissolution of Phosphorus.
- Both A and R are true and the R is the correct explanation for the A.
- Both A and R are true but the R is not the correct explanation for A.
- A is true but R is false.
- A is false but R is true
- Both the R and A are false
The core metal in chlorophyll is
- Fe
- Mg
- Mn
- Zn
Near the canal banks soils become
- Alkaline
- acidic
- Neutral
- Well Drained