List of top Agronomy Questions

A mustard crop is irrigated in 30 hours, with a discharge rate of 200 litres per minute, workout the average depth of irrigation

Herbicidal control for Lantana camara

Tembotrione is registered for use in _______.

If a soil has 10% less moisture than its field capacity, what will be depth of irrigation required to bring soil moisture level to field capacity for a soil having depth 0.4 m and bulk density 1.2 mega gram/\(\text{m}^3\)

Given below are two statements, one is labelled as Assertion (A) and other one labelled as Reason (R).
Assertion (A) : In the initial phase of flooding (phase 1), there is decrease in hydraulic conductivity.
Reason (R) : In the initial phase of submergence, the rate of reduction of hydraulic conductivity due to microbial sealing exceeds the rate of increase of hydraulic conductivity caused by the removal of entrapped air.
In light of the above statements, choose the correct answer from the options given below.

Given below are two statements, one is labelled as Assertion (A) and other one labelled as Reason (R).
Assertion (A) : At sea-level, where the atmospheric pressure is at 1 bar a tensiometer can be used to indicate soil suction values upto 1 bar
Reason (R) : Beyond this value, because of low pressure, the water column in the tensiometer would break into vapour or boil away and leave the tensiometer system making it inoperative
In light of the above statements, choose the correct answer from the options given below.

The first case of confirmed herbicide resistance in weed was reported by ______.

Given below are two statements:
Statement (I): A foot operated sprayer is basically used for orchard and tree spraying.
Statement (II): Hydraulic pressure of \(10 \text{ kg/cm}^2\) can be achieved with a foot sprayer which is necessary to project the jet of spray to tall trees.
In light of the above statements, choose the most appropriate answer from the options given below.

Inhibitors of photosynthesis at photosystem II

Arrange herbicides in ascending order with respect to their first synthesis:
(A). Paraquat
(B). Pretilachlor
(C). Pendimethalin
(D). Simazine
(E). Sulfosulfuron
Choose the correct answer from the options given below:

Given below are two statements:
Statement (I): An herbicide label is a legal contract between manufacturer, user and regulatory body.
Statement (II): Flowable formulation is an example of liquid formulation.
In light of the above statements, choose the most appropriate answer from the options given below.

Argemone mexicana is an objectionable weed of _____

Given below are two statements:
Statement (I): Increasing fertilizer rates to maintain yields in weedy fields can be a waste of resources.
Statement (II): Increasing fertilizer rates to give competitive advantage on already weeded plots may sustain the effect of weeding.
In light of the above statements, choose the most appropriate answer from the options given below:

Given below are two statements:
Statement (I): Chicorium intybus is an objectionable weed species in Egyptian clover.
Statement (II): Egyptian clover on the ground of their smaller seeds are more vulnerable to have admixture with chicory seeds.
In light of the above statements, choose the most appropriate answer from the options given below:

Which of the following groups of herbicides, oxyfluorfen belongs to

Main dispersal agent of Dandelion is _____.

Which of the following does not apply to SRI method of paddy cultivation

Cotton fibre is made up of:

Rhizobium japonicum fixes N in symbiotic relationship with:

The specificity between legume host and Rhizobium spp. is governed by:

Dehydrogenase activity is a good index of biological activity of soil because it plays a role in:

Cotton belongs to the family: