Agronomy - Study Mode

[#1016] Critical stage of irrigation for sugarcane is
Correct Answer

(D) Formative stage

Explanation

Solution: Irrigation is the main source of water in the semi-arid areas, hence it is not irrigated at scheduled stages it may lead to great loss.
The critical stages for irrigation of sugarcane are the formative or vegetative stages.
The formative stage is 60 - 130 days after planting and a heavy quantity of water is required at this stage in the northern part of India.

[#1017] National Research Centre on rape seed and mustared is located at
Correct Answer

(C) Bharatpur

Explanation

Solution: The National Research Centre on Rapeseed and Mustard (NRCRM) is located at Sewar Bharatpur, Rajasthan. It was established on 20 th October 1993, under ICAR to carry out basic, strategic, and applied research on rapeseed and mustard. It also engages in developing ecologically sound and economically viable agro-production and protection technologies.

[#1018] Which one of the following varieties of barley is nematode resistant
Correct Answer

(D) Raj Kiran (RD-387)

Explanation

Solution: Cereal cyst nematodes (CCNs) are the most commonly available nematode pests that limit the yield of small grain pests like wheat and barley. Nematode-resistant varieties are in high demand. Raj Kiran (RD-387) is one of the nematode resistant varieties of barley.

[#1019] Wheat is the King of cereals because of
Correct Answer

(B) Highest area coverage

Explanation

Solution: Wheat is known as the king of cereals for many reasons, like: • It is the main part of the diet of humans. • It is the main ingredient for making bread. • It can be grown in almost all types of soil, under any climatic conditions and can withstand any parameters for cultivation. • It is cultivated in its highest area of coverage.

[#1020] The % pore space in a soil having a bulk density of 1.16 mg m -3 and particle density of 2.62 mg m -3 is
Correct Answer

(C) 55.7%

Explanation

Solution: The space between the soil particles in the pore space. The formulas for calculating the pore space percentage $${ ext{PS}} = left( {1 - frac{{{ ext{BD}}}}{{{ ext{PD}}}}}
ight) imes 100$$ where PS is Pore Space, BD is Bulk Density and PD is Particle Density. Putting all the values in the above formula $${ ext{PS}} = left( {1 - frac{{1.16}}{{2.62}}}
ight) imes 100 = 0.557 imes 100 = 55.7\% $$