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41
Which one of the following states in India has the highest percentage of tank irrigation?
Discuss
Answer & Solution
Answer: Option A
Solution:
Tank irrigation is practiced by constructing mud across small streams to make a small reservoir that collects excess water during the rainy season.
This practice is popular in the peninsular plateau areas like Tamil Nadu and Andhra Pradesh.
42
Which of the following ratios between nursery area and transplantation is correct when rice seedling is raised by "Dapog method"?
Discuss
Answer & Solution
Answer: Option D
Solution:
The Dapog method is a method of raising a dense stand of seedlings with no contact with soil. It is very common in the Philippines.
The ratio between nursery area and transplantation area when rice seedling is raised by this method is 1 : 250.
43
The most suitable temperature for maize growth is
Discuss
Answer & Solution
Answer: Option D
Solution:
Maize is the third most important food crop after rice and wheat. it is a Kharif crop.
The maize crop is sensitive to both moisture stress and excessive moisture also high and low temperatures. The most suitable temperature for maize growth is 32 degrees Celcius.
44
One bar pressure is equal to . . . . . . . . dynes/cm2
Discuss
Answer & Solution
Answer: Option C
Solution:
The bar is a metric unit of pressure but is not part of an international system of units.
Dyne is the unit of force in the centimeter-gram-second system of physical units.
1 Bar = 1000000 dynes/cm2
          = 106 dynes/cm2
45
International Research Institution dealing with tuber crops is
Discuss
Answer & Solution
Answer: Option B
Solution:
International Research Institution dealing with tuber crops is CTCRI.
CTCRI stands for Central Tuber Crops Research Institute. It is a constituent institute under ICAR and is the only research organization in the world dedicated to research on tropical tuber crops. It is located at Sreekaryam, Thiruvanthapuram, Kerala and was established in 1963.
46
Highest protein content is found in
Discuss
Answer & Solution
Answer: Option A
Solution:
Soybean is a legume crop highly rich in nutrients and contains a maximum amount of protein. It is widely used as an edible seed as well as an oil seed.
Soybean seeds contain about 37% of protein, 18% of fat, 8.46% of Linoleic acid and 5.5% of crude fiber.
47
The upper limit of the soil moisture available for the plant growth is
Discuss
Answer & Solution
Answer: Option B
Solution:
Field capacity is the amount of soil moisture or water content held in soil after excess water has drained away and the rate of downward movement has materially decreased, usually after 2 - 3 days after rain or irrigation.
The upper limit of the soil moisture available for plant growth is $$\frac{1}{3}$$ bars of field capacity.
48
In furrow method of irrigation
Discuss
Answer & Solution
Answer: Option D
Solution:
Furrow irrigation is a method where furrows are made and water is applied using a small discharge to favour water infiltration while advancing down the field. In this gravity plays the role of providing just enough water for suitable plants to grow.
In the furrow method of irrigation, only $${\frac{3}{4}^{{\text{th}}}}$$ of the furrow is wetted.
49
Origin of Corchorus capsularis (White jute) is believed to be in the
Discuss
Answer & Solution
Answer: Option B
Solution:
Corchorus capsularis, white jute is a shrub species belonging to the family Malvaceae. It is the finer quality of jute fibres. Its leaves are used as a foodstuff and the leaves. Unripe fruits and roots are used in traditional medicine.
It is believed to be originated in the Indo-Myanmar region.
50
Impect of greenhouse effect is
Discuss
Answer & Solution
Answer: Option C
Solution:
The greenhouse effect is the phenomenon of warming of the earth's atmosphere because of the emission of greenhouse gases, which trap harmful U.V and infrared Solar Radiation.
The main consequences of Green house effect increase in the temperature of the earth i.e. Global Warming which further leads to the melting of glaciers, a rise in Sea level, floods and famine, etc.