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51
Which of the following variety is a dwarf mutant
Discuss
Answer & Solution
Answer: Option D
Solution:
Jagannath is a mutant dwarf variety of rice released in the year 1971 by Rice Research Station, Bhubaneswar. It is developed by the method of mutation which is why called as mutant variety.
It is fairly resistant to stem borer and broad spectrum of field resistance to major pests and diseases.
52
Application of organic materials with C : N ratio wider than 20 to 30 : 1 leads to . . . . . . . . of soil N
Discuss
Answer & Solution
Answer: Option D
Solution:
The ideal carbon: nitrogen ratio generally should be around 30 : 1.
A C : N ratio of 20 : 1 leads to net nitrogen mobilization, and it causes a very fast decomposition process resulting in ammonia and soil carbon losses.
Thus the application of organic materials with a C : N ratio wider than 20 to 30 : 1 leads to the Immobilization of soil Nitrogen.
53
Most widely grown and edible species of wheat is
Discuss
Answer & Solution
Answer: Option C
Solution:
Triticum aestivum is a hexaploid species that is a widely grown and edible species of wheat. It has a hexaploid genome arrangement, with six copies of each chromosome.
Wheat is an important source of carbohydrates, source of multiple nutrients, and dietary fiber.
54
Which one of the following is a green house gas
Discuss
Answer & Solution
Answer: Option C
Solution:
Methane is the greenhouse gas out of the following given options. The presence of methane in the atmosphere affects the earth's temperature and climate system. It is emitted from fossil fuel consumption, agriculture, and landfills.
The other gases which are responsible for the greenhouse effect are carbon dioxide, nitrous oxide, hydrochlorofluorocarbons and ozone in the lower atmosphere.
55
Dapog method is associated with
Discuss
Answer & Solution
Answer: Option B
Solution:
Dapog method is the technique of raising paddy seedlings in the nursery and this technique was brought to our country from the Philippines.
In this technique, seedlings are raised on a thick stand without any soil. Seedlings are ready to be transplanted in 12 to 14 days.
56
International Institute of Tropical Agriculture is situated at
Discuss
Answer & Solution
Answer: Option B
Solution:
The International Institute of Tropical Agriculture is situated in Ibadan, Nigeria and was established in 1967.
The present Director General of this Institute is Ntetanya Sanginga.
It is a non-profit organization that works with partners to enhance crop quality and productivity, reduce producer and consumer risks and generate wealth from agriculture, with the ultimate goals of reducing hunger, malnutrition and poverty.
57
Ultimate irrigation potential of India is
Discuss
Answer & Solution
Answer: Option A
Solution:
The sustainable irrigation potential of India has been estimated to be 139.5 million hectares i.e. 140 million hectares approximately.
Out of which 58.5 mha comes from major and medium river-fed irrigation canal schemes, 15 mha from minor irrigation canal schemes and 66 mha from groundwater well-fed irrigation.
58
The colour of certification tag in foundation seed is
Discuss
Answer & Solution
Answer: Option A
Solution:
The colour of the certification tag in the foundation seed is white. Certification of a tag is issued by seed certification agencies. It is to maintain the genetic identity and purity of the seeds and crop ultimately.
The breeder seeds have golden yellow tags, registered seeds have opal blue tags and certified seeds have the green tag.
59
One ton is equal to (kg)
Discuss
Answer & Solution
Answer: Option C
Solution:
One ton is equal to 1000 kgs.
One ton = 9.07 quintal
One ton = 2204.62 pounds.
It is a unit to measure weight. Originally it was used as a measurement of volume.
60
The weed that causes Asthma is-
Discuss
Answer & Solution
Answer: Option C
Solution:
Parthenium hysterophorous is an invasive species belonging to the family Asteraceae.
It invades disturbed land, including roadsides. It infests pastures and farmland also known as famine weed.
This plant produces allelopathic chemicals that suppress crop and pasture plants and allergens that affect humans and livestock. This weed causes respiratory problems and can trigger asthmatic allergies.