Agronomy - Study Mode
[#801] The optimum temperature for retting of sunhemp is
Correct Answer
(B) 21° - 27°C
Explanation
Solution: Retting is the process of employing the action of bacteria and moisture on plants to dissolve or rot away much of the cellular tissues and gummy substances surrounding bast-fiber bundles, thus separating the fibre from the stem. The optimum temperature for retting of sun hemp is 21° - 27°C.
[#802] General dose of Bio fertilizer for seed treatment
Correct Answer
(C) 20 g/kg
Explanation
Solution: Biofertilizers are living microbes to enhance nutrition in plants by either mobilizing or increasing nutrient availability in soil. And treating seeds with biofertilizers are done before sowing to make seeds viable, and resistant to pest and pathogens. The general dose of Biofertilizer for seed treatment is approximately 20 g/Kg.
[#803] The main aim of organic farming is
Correct Answer
(A) To reduce the dependance on chemical fertilizers
Explanation
Solution: Organic farming is the need of this era. It is the farming practice of growing crops without using synthetically compounded fertilizers, pesticides, growth regulators, GMOs and livestock food additives. The main aim of organic farming is to reduce the dependence on chemical fertilizers to conserve the environment and natural resources.
[#804] Non traditional areas of rice cultivation include
Correct Answer
(A) Punjab and Haryana
Explanation
Solution: India is the world's second largest producer of rice and the largest exporter of rice in the world.
It is a Kharif crop and is mainly grown in areas that receive heavy rainfall. Traditional rice growing areas are West Bengal, Bihar, eastern Uttar Pradesh, Odhisa, etc. But because irrigation process made it feasible to grow Rice in a nontraditional areas like Punjab and Haryana also.
[#805] The force of attraction binds the molecules of the same kind is
Correct Answer
(C) Cohesion
Explanation
Solution: Cohesion is the force of attraction to bind molecules of the same kind. Adhesion is the force between two surfaces inside the body that causes them to stick together. Matrix force is the action between water and soil, the attraction that holds water to soil particles.