Agronomy - Study Mode
[#471] Agronomic measures of soil conservation are applicable up to a slope of
Correct Answer
(A) < 2%
Explanation
Solution: Agronomic measures reduce the impact of raindrops through the covering of the soil surface and increase the infiltration rate and water absorption capacity of the soil which results in reduced runoff and soil loss through erosion. Agronomic measures of soil conservation are applicable up to a slope of ≤ 2%.
[#472] LER value of 1.30 indicate . . . . . . . . effect.
Correct Answer
(A) Complementary
Explanation
Solution: LER stands for Land Equivalent Ratio and it is defined as 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. It can be used whenever more than one type of yield can be obtained from the same area. When the LER value is 1.30, it indicates a complementary effect.
[#473] Dry land farming means
Correct Answer
(C) Cultivation of drought resistant, short duration and high yielding varieties of crops with package of soil and water management including water harvesting
Explanation
Solution: Dry Land farming means the cultivation of drought resistant, short duration, and high yielding varieties of crops with a package of soil and water management including water harvesting. It is a method of farming practice in semi-arid areas and non-irrigated cultivation of crops. It involves the constant assessing of the amount of moisture present or lacking for any given crop cycle and planning accordingly.
[#474] The number of Agro-climatic zones of India is
Correct Answer
(C) 15
Explanation
Solution: The agricultural land area of India is divided into 15 agro-climatic zones and further divided into 72 more sub-divisions. It is based on soil type, climates, rainfall, etc. These are: 1. Western Himalayan division 2. Eastern Himalayan division 3. Lower Gangetic plain region 4. Middle Gangetic plain region 5. Upper Gangetic plain region 6. Trans-Gangetic plain region 7. Eastern plateau and hill region 8. Central plateau and hill region 9. Western plateau and hill region 10. Southern plateau and hill region 11. East coast plain and hill region 12. West coast plain and hill region 13. Gujarat plain and hill region 14. Western plain and hill region 15. Island region
[#475] The optimum seed rate for pigeonpea crop is
Correct Answer
(B) 12 - 15 kg/ha
Explanation
Solution: The pigeon pea is a perennial legume belonging to the family Fabaceae. It is widely cultivated in tropical and semitropical regions of the world. It contains high levels of protein and the important amino acids methionine, lysine and tryptophan. World production of pigeon pea is estimated at 4.49 million tons, and about 63% of this production comes from India. The optimum seed rate for pigeon pea crops is 12 - 15 kg/ha.