Agronomy - Study Mode

[#791] Humic acid is a fraction of humus, which is
Correct Answer

(B) Soluble in alkali and insoluble in acid

Explanation

Solution: Humic acid is a fraction of humus that is soluble in alkali and insoluble in acid. Humus is the organic and nutrient-providing material of soil, it is formed by the decomposition of leaves and other plant material by soil microorganisms. Humic acid is the group of molecules that bind to and help plant roots receive, water and nutrients.

[#792] Which one of the following crops has the highest consumption of pesticide
Correct Answer

(B) Cotton

Explanation

Solution: Cotton is the crop that has the highest consumption of pesticides approximately 50%. Cotton cultivation covers 5% of agricultural land but it accounts for the consumption of 50% of pesticides.

[#793] Para Wilt associated with
Correct Answer

(B) Cotton

Explanation

Solution: Parawilt is also known as Sudden Wilt. In wilted plants, the root system degenerates. Damage to the roots affects their ability to take up and move water to the rest of the plant. This lead to higher transpiration in wilted plants due to their insensitive stomata, which ultimately causes parawilt in cotton.

[#794] The formula $$left( {frac{{{ ext{LER - 1}}}}{{{ ext{LER}}}} imes { ext{Value}},{ ext{of}},{ ext{Combined}},{ ext{Intercrop}}}
ight)$$ xa0 xa0 xa0 xa0 represents
Correct Answer

(A) MAI

Explanation

Solution: The above formula represents MAI which is Moisture Adequacy Index. It is the standardized measure used for assessing the degree of adequacy of rainfall and soil moisture to meet the potential water requirement of crops. LER is Land Equivalent Ratio, which means the ratio of the area under sole cropping to the area under intercropping needed to give equal amounts of yield at the same management level.

[#795] Match the column I (food gain product in sop) with column II (during 2003) and select correct answer: Column I Column II a. Rice 1. 68.9 m. tonnes b. Wheat 2. 77.7 m. tonnes c. Coarse grain 3. 25.1 m. tonnes d. Pulses 4. 11.5 m. tonnes
Correct Answer

(A) a-2, b-1, c-3, d-4

Explanation

Solution: SOP is the Standard operating procedure for use of Drone application, with pesticides for Crop Protection and for Spraying in soil and crop nutrients in Agricultural, Forestry, and Non-cropped areas. As per the table, food grain production in SOP during 2003 is Rice - 77.7 m. tonnes, wheat - 68.9 m. tonnes, coarse grain - 25.1 m. tonnes and pulses - 11.5 m. tonnes.