Agronomy - Study Mode

[#231] Crop lodging time conducted in Hawai
Correct Answer

(A) Sugarcane

Explanation

Solution: Lodging is defined as the permanent displacement of crops that stems from their vertical position to the ground level, which ultimately reduces the yield as it becomes difficult to harvest. The timing of lodging can control its effect on yield, disease, grain moisture, quality and evenness of ripening. Crop lodging time in Sugarcane was conducted in Hawai.

[#232] Deficiency symptoms of nitrogen occurs first on
Correct Answer

(B) Lower surface

Explanation

Solution: Deficiency symptoms of nitrogen occur in plants and can be first observed on lower leaves that are older. The overall growth of plants becomes poor and leaves become pale green to yellow because the plant become deficient in chlorophyll in the absence of nitrogen.

[#233] Which of the following is not a short day plant?
Correct Answer

(D) Wheat

Explanation

Solution: Maize, Moong and Jowar are Short day plant means they require a maximum of 8 hours of daylight. But wheat is not a short day plant, it is a long day plant as it requires a maximum of 12 - 16 hours of day light for proper growth and development of the plant.

[#234] Match the following columns: Column I Column II a. International Board for Plant Genetic Resources 1. lbadan (Nigeria) b.International institute of Tropical Agriculture 2. Rome (Italy) c. International Laboratory for Research on Animal Disease 3. Hyderabad (India) d. International Crops Research Institute for the Semi-Arid Tropics 4. Nairobi (Kenya)
Correct Answer

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

Explanation

Solution: IBPGR is International Board for Plant Genetic Resources located in Rome, Italy. IITA is the International Institute of Agricultural was founded in 1967 and is located in Ibadan, Nigeria. ILRAD is International Laboratory for Research on Animal Disease and is headquartered in Nairobi, Kenya. ICRISAT is International Crops Research Institute for Semi-Arid Tropics and is headquartered in Hyderabad, Telangana, India.

[#235] Productivity of an intercrop per unit area of ground compared with that expected from sole crop sown in the same proportions is termed as
Correct Answer

(A) Land equivalent ratio

Explanation

Solution: Productivity of an intercrop per unit area of ground compared with that expected from sole crop sown in the same proportions is termed as Land Equivalent Ratio. The Land Equivalent Ratio (LER) is the ratio of the area under sole cropping to the area under intercropped needed to give equal amounts of yield at the same management level. It is the sum of the fractions of the intercropped yields divided by the sole crop yields.