Agronomy - Study Mode

[#926] Number of Soil Climatic Zones in India is
Correct Answer

(D) 64

Explanation

Solution: The agricultural land of India is divided into 15 major agro-climatic zones, which on dividing it into sub-divisions, there are 64 zones in India. These are divided based on different agricultural parameters like climate, type of soil, optimum rainfall and temperature, etc. The main objectives of the division of these zones are to optimize agricultural production and to increase agriculture based income.

[#927] Inherent capacity of soil to supply nutrients in balanced amount is called
Correct Answer

(A) Soil Fertility

Explanation

Solution: Soil fertility is the inherent capacity of the soil to supply nutrients in a balanced amount to the crops. As per the agronomist, there are 17 essential nutrients required by the plants for optimum growth and development. And if any nutrient is missing or lacking, it can be provided by the application of fertilizers to the soil to achieve optimum productivity.

[#928] When a litre of solution has one gram molecular weight of a substance dissolve in it, is called
Correct Answer

(D) Normal solution

Explanation

Solution: A normal Solution is a solution in which one litre of a solution has one gram molecular weight of a substance dissolved in it. A molar solution is an aqueous solution in which 1 mole of a solute is dissolved in 1 litre of a solution. A molal solution that contains 1 mole of a solute in one KG of the solvent.

[#929] Stevenson screen is related to
Correct Answer

(C) Agrometeorology

Explanation

Solution: A Stevenson screen is an instrument shelter or an enclosure for meteorological instruments against precipitation and direct heat radiation from the outside environment. It is an important instrument of Agrometereology. Its main use is to provide a standardized environment in which to measure temperature, humidity, dew point and atmospheric pressure.

[#930] Soil Erodibility factor highest in
Correct Answer

(C) Silt

Explanation

Solution: The soil erodibility factor also known as the K factor is a quantitative measure of the susceptibility of soil particles to detachment and transport by rainfall and runoff. This factor is found to be highly influenced by the particle size distribution and clay mineralogy of the soil. Soil erodibility factor is highest in soils having a high content of silt as they easily get withered and produce high rates of runoff.