List of top Questions asked in ICAR AIEEA (PG)- 2021

Assertion A: In a typical watershed project, development is started at the top of drainage basin and proceeds down the slopes to lowlands.
Reason R: Upper reaches in the watershed are occupied mostly by forests which are often degraded and most in need of repair; also treating upper parts of basin reduce runoff and thus protects lower lands.
In light of the above statements, choose the correct answer from the options given below:

The period of crop growing season in terms of weeks under rainfed condition is:

Which one of the following is radiation reflecting anti-transparent?

According to De Martonne's classification, match the following:
A. < 30
B. 20-30
C. 10-20
D. > 5
Match with the following vegetation conditions:
I. True desert
II. Dry steppe
III. Prairies
IV. Forest vegetation
Choose the correct answer from the options given below:

Under inter-row water harvesting, the furrows of about 30-40 cm with depth of are alternated by ridges of 60-70 cm.
A. 10 cm
B. 15 cm
C. 20 cm
D. 25 cm
Choose the correct answer from the options given below:

Assertion A: Break of monsoon at critical stages for soil moisture stress leads to reduction in yield.
Reason R: Only when the break of monsoon exceeds 15 days duration or more.
In light of the above statements, choose the correct answer from the options given below:

Match the following events with their years:
A. 1920
B. 1942
C. 1953
D. 1972
Match with the following events:
I. Royal Commission on Agriculture
II. Central Soil Conservation Board
III. ICRISAT
IV. Bombay Land Development Act
Choose the correct answer from the options given below:

Statement I: Plants can tolerate drought either by mitigating the actual stress or by showing a high degree of tolerance to stress.
Statement II: Plants tolerate the stress by showing resistance to dehydration and by preventing leaf collapse, permit the plants to maintain a high internal water potential in spite of drought conditions.
In light of the above statements, choose the correct answer from the options given below:

The following are the types of drought:
A. Invisible drought
B. Contingent drought
C. Meteorological drought
D. Permanent drought
Choose the correct answer from the options given below:

Statement I: Plants absorb nitrogen from the soil solution as nitrate (NO\(_3^-\)) and as ammonium (NH\(_4^+\)) ions.
Statement II: The content of N in healthy plants ranges between 1 and 5% depending upon the species or variety.
In light of the above statements, choose the most appropriate answer from the options given below:

The pH range of normal soils is:

Statements:
A. Magnesium deficiency symptom shows the first appearance of chlorosis mainly between veins (which remain green).
B. Iron deficiency causes interveinal chlorosis which first appears in older leaves with distinct green veins.
C. Manganese deficiency causes brownish black spots in pea and grey speck of oat.
D. Boron deficiency shows brownish or reddish young leaves and growing points of shoot and roots die.
Choose the correct answer from the options given below:

Match List I with List II:
A. Bray
B. Mitscherlich
C. O.W. Wilcox
D. Parker
Match with the following:
I. Law of diminishing return
II. Per cent yield concept
III. Nutrient Index
IV. Inverse Nitrogen-Yield concept
Choose the correct answer from the options given below:

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:

A wheat crop grown on two hectare area produced 10 ton grain and required 5 irrigations of 6 cm each, find out its field water use efficiency: