Agronomy MCQ Question and Answer | Agriculture MCQ Question

Cropping intensity is the number of times a crop is planted per year in a given agricultural area. It is the ratio of effective crop area harvested to the physical area.
At present, the cropping intensity in India is 140%. It has risen 25% approximately since independence. The strategies should be implemented to increase the cropping intensity in developing countries like India because of its rising population.

The chemical nature of lime is basic and adding a basic substance to the acidic soil will neutralize the acid present and ultimately increase the pH value of the soil.
The most common neutralizing material used in agriculture is agricultural limestone as it is very economical and easily available.

Melilotus indica is a common weed with typical weedy attributes and belongs to the family Fabaceae. It reproduces in large numbers and exhibits dormancy to prolong persistence in fields.
It is an annual or biennial herb from 10 - 50 cms in height with yellow flowers and is most commonly named sweet clover. It is used as a source of nectar for bees, forage and as a soil improver.

Chipsona is one of the best varieties of potatoes and is most commonly used in making chips and French fries. It is further subdivided into two categories Kufri chipsona-1 and Kufri chipsona-3.
This variety is for growing in north Indian Plains. It shows medium maturity with high dry matter and a low level of reducing sugars and phenols. Most importantly it is resistant to late blight.

Water use efficiency (WUE) is a measure of the amount of biomass produced per unit of water used by a plant. It is based on the concept introduced 100 years ago by Briggs and Shantz in 1913 showing a relationship between plant productivity and water use.
WUE is highest for the finger millet as it adapted to hot and semi-arid conditions. It can withstand cultivation at altitudes over 2000 m above sea level, because of its high drought tolerance and the long storage time of the grains.

Cusec is the measure of the rate of flow of water. This unit is most commonly used by the irrigation department.
1 cusec = 1 cubic foot of water flow per second
1 cusec = 28.32 litres of water flow per second
1 cusec = 1780 lpm.

Non-nuclear DNA is the extrachromosomal DNA present in mitochondria or chloroplast of some cell, i.e. any DNA that is found off the chromosomes.
Most of the DNA in an individual genome is found in chromosomes contained in the nucleus, but the amount of non-nuclear DNA present in a cell is around $${\frac{1}{3}^{{\text{rd}}}}$$ of the nuclear DNA.

Atrazine is the most commonly used herbicide with the greatest use on corn, sorghum, and sugarcane that can be applied before and after planting to control broadleaf and grassy weeds.
It can effectively control grasses in the maize field without harm to the main crop, as degradation of the chemical in the maize plant occurs due to the presence of the GSH enzyme.
GSH is a Glutathione S-transferase and is capable of preventing damage to important cellular components caused by reactive oxygen species such as free radicals, peroxides, heavy metals, etc.

Echinochloa frumentacea is the scientific name of sawa millet or shyamak.
It is also known as vrat ke chawal in Hindi, oodalu in kanadda, shyamak or shyama chal in Bangla, Jhangora in Garhwal, Bhagar in Marathi, samo or morio in Gujarati, kuthiraivaali in Tamil.
This millet is widely grown as a cereal in India, Pakistan and Nepal.

Dr. Yashwant Singh Parmar University of Solan, Himachal Pradesh is mainly working on Horticulture and Forestry.
The mission of this institute is to make strategies to fulfill the need and requirements of the farmers in Himachal Pradesh through incorporating excellence in education and research in horticulture and forestry.