Agronomy - Study Mode

[#621] Seed plot technique of potato is use to produce
Correct Answer

(A) Virus free seeds

Explanation

Solution: The seed plot technique of potatoes is the technique to produce multiplied number of virus free seeds in the Northern Plains of the country. This technique was developed by CPRI in 1959 to grow healthy seeds during the low aphid period from October to the first week of January coupled with integrated pest management, roughing and dehaulming of the seed crop.

[#622] N, P 2 O 5 and K 2 O contents of DAP are
Correct Answer

(B) 18 - 46 - 0

Explanation

Solution: DAP is Di-ammonium Phosphate and it is a preferred fertilizer as it contains 18% of Nitrogen and 46% of phosphorus. It does not contain muriate of potash. Thus the ratio will be 18 - 46 - 0 for nitrogen, phosphorus and potash respectively.

[#623] India is divided into following agroclimatic zone
Correct Answer

(A) 15

Explanation

Solution: The agricultural land area of India is divided into 15 agroclimatic 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

[#624] Relay cropping' means
Correct Answer

(C) Growing of four crops on the same land in a year in such a manner that the following crop is sown before the harvest of preceding crop,

Explanation

Solution: Relay cropping means growing four crops on the same land in a year in such a manner that one crop is sown before the harvest of the preceding crop. It solves the various problems of farming like an inefficient use of available resources, controversies in sowing time, fertilizer application and soil degradation.

[#625] Chromosome number of peanut is
Correct Answer

(B) 2n = 40

Explanation

Solution: Peanut is a legume crop grown mainly for its edible seeds and oil. Cultivated peanut is of hybrid origin and has a polyploid genome. It is a self-pollinating allotetraploid (AABB genome), Chromosome number of peanut is 2n = 4x = 40