List of top Agronomy Questions on Soil Nutrient asked in ICAR AIEEA (PG)

Match the nutrient deficiency symptoms:
A. Sulphur
B. Phosphorus
C. Nitrogen
D. Boron
Match with the following symptoms:
I. Reddish colour on green leaves or stem appearing on older leaves
II. Chlorosis starting from leaf tips appearing on older leaves
III. Youngest leaf is brownish or dead (e.g. on beet)
IV. Mottled yellow-green leaves with yellowish veins appearing on younger leaves
Choose the correct answer from the options given below:

Statement I: Use efficiency of fertilizer NPK can be improved by following integrated nutrient management (INM).
Statement II: Integrated nutrient management (INM) utilizes the use of organic manure, inorganic fertilizers and biofertilizers.
In light of the above statements, choose the most appropriate answer from the options given below:

Statement I: Acid sulphate soil is formed due to formation of Jarosite.
Statement II: Acid sulphate soil is found in Himachal Pradesh.
In light of the above statements, choose the most appropriate answer from the options given below:

Assertion A: Integrated use of phosphatic fertilizers and organic manure/crop residues increases P use efficiency by reducing P-fixation in soils.
Reason R: Decrease in P-fixation in presence of organic matter in soils may be ascribed by formation of phosphohumic complexes that are easily assimilated by plants and formation of coating on the surface of sesquioxide particles.
In light of the above statements, choose the most appropriate answer from the options given below:

Assertion A: Prolonged use of ammonium fertilizers may cause acidification of soils.
Reason R: Application of ammonium fertilizers leads to accumulation of nitrate ions in soils.
In light of the above statements, choose the most appropriate answer from the options given below:

Assertion A: Nickel is essential for the function of urease enzyme.
Reason R: Nickel helps in breaking down urea into NH\(_3\) and CO\(_2\).
In light of the above statements, choose the most appropriate answer from the options given below:

Which of the following is a slow release nitrogenous fertilizer?

Mitscherlich's equation is expressed by the equation:

The primary raw material used for commercial manufacturing of Muriate of Potash fertilizer is:

Bray's No. 1 reagent consists of mixture of:

Essentiality of zinc in plant was discovered in 1926 by:

The amount of mixed fertilizers grade (12:32:16), urea and MOP required to supply 100 kg N, 50 kg P\(_2\)O\(_5\) and 50 kg K\(_2\)O ha in rice:

Recently developed mineral soils with no diagnostic horizon, low degree of soil development due to less time, occurs in all states of India is called:

A. Clay content of black soils ranges from 30-80%.
B. Black soils are developed on basalt or alluvium derived basaltic rock.
C. Black soils exhibit eluviation and/or illuviation process.
D. Black soils have high bulk density.
Choose the correct answer from the options given below:

Dominant clay mineral present in red soil is:

Magnesium is a component of:

Which of the following statements is NOT correct about shifting cultivation?

A soil has pH 9.8, ESP 12% and electrical conductivity 5.2 dS m$^{-1}$. What type of soil is it?

Water analysis of a bore well reports as under:
CO$_3MATH_852484344e2542d9b72097b6ce225e92^-$: 4.0 me/L, Ca$^{2+}$: 2.6 me/L, Mg$^{2+}$: 1.5 me/L.
Calculate the RSC (residual sodium carbonate) in the bore well water.

In irrigated salt-affected soils, under raised bed planting system where should the seedlings be planted?