Agronomy - Study Mode

[#491] Which one of the following food grains is most coarse
Correct Answer

(D) Paspalum scrobiculatum

Explanation

Solution: Paspalum scrobiculatum , commonly called Kodo millet, is an annual grain that is grown primarily in Nepal. Millets fall in the category of coarse millet, hence it is also a very hard and coarse crop that is drought tolerant and can survive on marginal soils also. Kodo millet has a large potential to provide nourishing food to subsistence farmers.

[#492] In problem areas red rot incidence in sugarcane can be minismised by
Correct Answer

(D) Following crop rotation with non-hosts

Explanation

Solution: Red rot of sugarcane is a disease first reported in Java in 1893 caused by fungus. It can be controlled and minimized by following crop rotation with non-hosts and application of appropriate foliar fungicides. Now resistant sugarcane varieties are also available which is the best method to stop infection.

[#493] The total cultivated area in India is close to.
Correct Answer

(A) 100 - 150 million hectares

Explanation

Solution: India is an agricultural country. 70% of the population relies on agriculture for their livelihood. As per the survey done at the end of the fiscal year 2021, in India, the total area covered under the cultivation of crops is between 100 - 150 million hectares. The total production of food grains in India is about 316 million tons, as recorded from 2020 to 2021.

[#494] Among the following the set of essential nutrient elements, which are absorbed as anions by plants is
Correct Answer

(D) Boron, chloride, molybdenum, phosphorus, sulphur

Explanation

Solution: Anions are negatively charged ions while cations are positively charged ions. Anions are the type of ions that have gained electrons. Boron, chloride, molybdenum, phosphorus and sulphur are the essential nutrients that are absorbed as anions by plants for normal growth and development of the plant.

[#495] Which of the following control the root initiation, cell elongation and apical dominance?
Correct Answer

(A) Auxin

Explanation

Solution: Auxin and cytokinin are the phytohormones that control root initiation, cell elongation and apical dominance. Auxins play a cardinal role in the coordination of many growths and behavioral processes in plant life cycles and are essential for plant body development. The Dutch biologist Frits Warmolt Went described the role of auxins in plant growth for the first time in 1920.