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Agronomy MCQ Question and Answer | Agriculture MCQ Question

Agronomy MCQ Question and Answer with easy explanations in Agriculture mcq. Agronomy MCQ section is suitable for aspirants preparing for IBPS- AFO (Agriculture Field Officer) Iffco, Kribhco, NFL, NSC, ICAR-JRF/SRF/ ARS, IARI, SADO, DDA,ADA,FCI,ASRB,B.Sc Agriculture and M.SC Agriculture. Page-1 section-6

Each section contains 100 MCQs on Agronomy .
1
The fat content in bajra is around
Discuss
Answer & Solution
Answer: Option D
Solution:
Bajra is an excellent source of fiber which is very healthy and nutritious for human consumption.
100 gms of Bajra contains 360 calories of energy, 12 g of moisture, 12 g of protein, 5 g of fats, 2 g of minerals, 1 g of fiber, 67 g of carbohydrates, 42 mg of Calcium, 242 mg of phosphorus and 8 mg of iron. Thus fat content in bajra is 5%.
2
Mineralization of soil phosphorus from organic matter of crop residues is dependent on soil . . . . . . . . activity.
Discuss
Answer & Solution
Answer: Option D
Solution:
Mineralization of soil phosphorus from organic matter of crop residues is dependent on soil biological activity as it is done in the presence of soil microorganisms like bacteria, fungus and earthworms.
Mineralization is the process of oxidation and decomposition of chemical substances present in organic matter into soluble forms.
3
Which one of the following is the best example of catch crop
Discuss
Answer & Solution
Answer: Option C
Solution:
Catch crop is the crop grown in the space between two main crops or at a time no main crops can be grown.
The main purpose of catch crops is to increase annual dry matter production, to take up soil mineral and urine nitrogen, and to reduce the risk of leaching or runoff.
Toria is one of the best examples of a catch crop.
4
Kalyan Sona is a
Discuss
Answer & Solution
Answer: Option C
Solution:
Kalyan sona is the high yielding, triple gene dwarf variety of wheat. It is a disease resistant and fertilizer responsive crop variety.
It is widely recommended to be cultivated all over India.
5
. . . . . . . . portion of sugarcane stalk is preferred for sowing purposes.
Discuss
Answer & Solution
Answer: Option A
Solution:
Healthy seed material, free from pests and diseases is selected for plantation.
The top one-third to half portion of the sugarcane stalk is preferred for sowing purposes as has immature buds of high viability. The bottom portion of the stalk is rich in sugar and takes a long time to germinate thus that can be used in sugar and jaggery production.
6
The word 'Agros' means
Discuss
Answer & Solution
Answer: Option B
Solution:
Agronomy is derived from two Greek words, “agros” which means field, and "nomos” to manage.
It is a branch of agriculture that deals with field crop production and soil management.
Pietro de'Crescenzi is the father of agronomy.
7
The ratio between gross and net cropped area is called an index of
Discuss
Answer & Solution
Answer: Option A
Solution:
The ratio between gross and net cropped area is called an index of cropping intensity. It can also be termed the intensity of crop rotation.
Gross cropped area is the total area sown once or more than once in a year whereas Net sown area is the area sown with crops but is counted only once.
8
The optimum temperature for sugarcane ripening is
Discuss
Answer & Solution
Answer: Option B
Solution:
The optimum temperature for sugarcane ripening is 60°F. It thrives best in hot sunny tropical areas. The ideal climate for sugarcane is a long, warm growing season with long daylight along with adequate moisture in the soil.
9
At permanent wilting point (PWP) the pF value is
Discuss
Answer & Solution
Answer: Option C
Solution:
PWP is a Permanent wilting point the point when there is no water available to the plant. Whereas the pF value of a soil is a quantity that indicates the quality of water contained in the soil.
At PWF the value of pF is 4.2 pF.
10
Single super phosphate is mainly
Discuss
Answer & Solution
Answer: Option B
Solution:
Single Super Phosphate is SSP and is mainly water soluble plant fertilizer. The material is slightly hygroscopic and it needs moisture proof packing to avoid lump formation during storage.
Its main components are monocalcium phosphate (Ca(H2PO4)2·H2O) and calcium sulphate (CaSO4·0,5H2O) in almost equal proportions.