Agronomy - Study Mode

[#686] In salinity affected areas, sowing in ridges
Correct Answer

(A) Northern slope planting

Explanation

Solution: The salinity affected area has its unique method of plantation. They follow a furrow irrigation system and maximum salts accumulate in ridges of soil between the furrows. Some follow ridge cultivation with drip irrigation which can decrease soil salinity and produce ecological benefits. Northern areas are salinity affected areas thus ridge cultivation occurs in northern slope areas.

[#687] The effect of LGLL (Laser Guided Land Levelling) lasts for
Correct Answer

(B) 2 - 3 years

Explanation

Solution: LGLL stands for Laser Guided Land Levelling. As per the studies it is believed to reduce greenhouse gas emissions by saving energy, reducing cultivation time, and increasing input efficiency. It works through a laser transmitter which transmits a laser beam, which is intercepted by the laser receiver mounted on the leveling bucket. The control panel mounted on the tractor interprets the signal from the receiver and opens or closes the hydraulic control valve, which further raises or lowers the bucket. Its effect lasts for 2 - 3 years.

[#688] Residual Sodium Carbonate (RSC) value of good water should be
Correct Answer

(B) < 1.25

[#689] Which of the following two crops are responsible for almost 75% of pulse production in India?
Correct Answer

(D) Gram and pigeon pea

Explanation

Solution: Gram and pigeon pea are the two crops that are responsible for almost 75% of pulse production in India. In the financial year 2021, India's production volume of grams including both horse gram as well as Kabuli chana for the rabi season was nearly 12 million metric tons. And the production of red gram or arhar was 4.43 million tonnes.

[#690] Which one is the American cotton?
Correct Answer

(C) Gossypium hirsutum

Explanation

Solution: Gossypium hirsutum is also known as upland cotton or American cotton. The United States, the world’s largest exporter of cotton, constitutes nearly 95% of all cotton production. It is native to America which is why also called American or Mexican cotton.