List of top Questions asked in ICAR AIEEA (PG)- 2020

Nutrient index approach of soil fertility evaluation was proposed by
Given below are two statements:
Statement I: Organic manures contain a low amount of nutrients and are applied in large quantities.
Statement II: Nutrient fractions in organic manures are in organic nature only.
In light of the above statements, choose the most appropriate answer from the options given below:
A solution contains 1/10000 moles/l of H⁺ ions. What is the concentration of hydroxyl ions in this solution?
Given below are two statements:
Statement I: Single superphosphate, double superphosphate, and triple superphosphate are monocalcium phosphates.
Statement II: Monocalcium phosphates are water-soluble and thus have high leaching losses.
In light of the above statements, choose the most appropriate answer from the options given below:
A wheat crop growing in a 40-hectare area was irrigated with 10 cumecs of water for 6 hours. Water stored in the root zone was 30 cm. What is the field application efficiency?
Benzoquinones and quinones are
Identify the correct order of the following methods of irrigation as per their water-use efficiency from maximum to minimum efficiency.
Match List I with List II
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Choose the correct answer from the options given below:
Match List I with List II
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Choose the correct answer from the options given below:
Match List I with List II
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Choose the correct answer from the options given below:
Given below are two statements:
Statement I: Waterlogging causes injury to crops due to low oxygen content and accumulation of hydrocarbon gases, hydrogen sulphide, and carbon dioxide.
Statement II: Ethanol production and activity of dehydrogenase decreases in roots of waterlogged plants.
In light of the above statements, choose the most appropriate answer from the options given below:
Match List I with List II
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Choose the correct answer from the options given below:
Calculate the water conveyance efficiency if water delivered to the farm is 84 mm and water diverted from the source is 140 mm.
The irrigation method with the highest water use efficiency is
Which amongst the following is a commonly used method for determining soil moisture constant under laboratory conditions?
Which of the following weeds is a holo root-parasite?
The amount of atrazine required to prepare 2.4 litres of 0.25% spray solution is
A weed with short-lived blue coloured flowers is
Electron transport inhibition in PS-II (Photosystem II) for herbicidal action is observed in
The herbicide 2,4-D is formulated as
The mode of herbicide action wherein the weed plants are bleached white, is caused by which of the following herbicides?
Which of the following herbicides is a contact herbicide?
The effective post-emergence control of Ageratum houstonianum can be achieved with
The headquarter of ICAR-Directorate of Weed Research (DWR) is at
The important biological control insect for Parthenium hysterophorus in India is