Agronomy MCQ Question and Answer | Agriculture MCQ Question

Norman Borlaug is the father of the Green revolution in the world. He was an American agronomist who led initiatives worldwide that contributed to the extensive increases in agricultural production.
The green revolution is the set of research technologies that led to increased agricultural production in the world.

Humus is the dark organic matter in the soil formed by the decomposition of plant and animal matter, rich in nutrients and retaining moisture in the soil. It is very much important for healthy plants and proper yield of the crop.

Humin is carbon based macromolecular substance and consists of both mineral and organic components. It is a non-biodegradable product of humus formation. It is the insoluble component of soil organic matter that remains after the extraction of the other components from soil organic matter in an aqueous base.

2,4,5-tricholorophenoxyacetic acid (2, 4, 5-T), is a chlorophenoxy acetic acid herbicide used to defoliate broad-leafed plants.

Isoproturan is a member of the class of phenyl ureas that is 1,1-dimethylurea substituted by a p-cumenyl group at position 3. A selective, systemic, herbicide used to control annual grasses and broadleaf weeds in cereals.

Butachlor is an aromatic amide that is acetamide in which the amide nitrogen has been replaced by a butoxymethyl group.

Dinoseb is a common industry name for 6-sec-butyl-2, 4-dinitrophenol, a herbicide in the dinitrophenol family. It is now here related to carbamates.

Ricinus communis L. is the scientific name of Castor. It is a species of perennial flowering plant in the spurge family, Euphorbiaceae.
It reproduces with a mixed pollination system which favours selfing by geitonogamy. castor seed is the source of castor oil and oil is rich in triglycerides, mainly ricinolein.

India’s position is 4^th in tractor production. India holds the pole position with an annual production of about a million tractors in the financial year 2021. Mahindra Tractors is the largest manufacturer of tractors in India and also the highest selling tractor brand by volume.
Messey ferguson is the largest tractor manufacturer and produces powerful tractors. It is an American producing company of farm equipment established in 1953. The United States tops the list of tractor production in the world.

Soil sickness is the rise of negative conditions for plant vegetative and reproductive performances induced into the soil by the plant itself.
The two main crops responsible for soil sickness are Jowar and linseed. It builds up soil-borne pathogens, deterioration of soil physiochemical properties, an imbalance of nutrient availability and accumulation of autotoxic substances.

Soil aggregation refers to the binding together of soil particles into clusters or aggregates.

Cations play a major role in soil aggregation by neutralizing the negative charges on clay particles and helping them to bind.

Al³⁺ (aluminum ion) has a higher charge density compared to divalent (Ca²⁺, Mg²⁺) and monovalent (K⁺) cations.

Because of its higher valency (3+), Al³⁺ can more effectively neutralize the negative charges on clay surfaces, leading to better aggregation.

Therefore, Al³⁺ has the highest aggregation capacity in soil.

Correct answer: Option A: Al³⁺

Intercropping of Mustard with potato is recommended in Replacement Series.
In this type of intercropping, both crops are called component crops. Neither is the base crop nor the intercrop. It means the plant population of both component crops is less than their recommended population in pure stand.

Rice is the Kharif season crop. The traditional method of cultivating rice is flooding the fields with water, it thus requires a sound water supply, maybe through high rainfall and canal irrigated lands. Moreover, rice cultivation requires bright sunny days during and after anthesis along with a humid climate.

According to the report, about 292 districts of our country account for the consumption of 85% of all the country's fertilizers. The crop-wise usage pattern of fertilizers is highly uneven. But the highest share of fertilizer consumption in India is by Potato followed by sugarcane, cotton, wheat and paddy.