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Most Important Question For Jrf, Bhu, Pre-Pg All Agriexams MCQ

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Q. Productivity Of Rice is highest in Which state

  • Maharashtra
  • Tamil nadu
  • Punjab
  • Gujarat

Ans

  • Punjab

Detail

Entire rice cultivation is concentrated in high productivity zone of the StatePunjab ranks second in the country in productivity of rice after Tamil Nadu. Triennium average productivity of Punjab (3,337 kg/ha) is higher by 71% than triennium average productivity (1,947 kg/ha) of the country.

Q. Nitrification is mainly carried out by? 

  • Hetero-trophic organism
  • Photoauto trophic organism
  • Chemoauto-trophic organism
  • None Of the above

Ans

  • Chemoauto-trophic organism

Detail

Chemotrophs are organisms that obtain energy by the oxidation of electron donors in their environment. Chemoautotrophs use inorganic energy sources to synthesize organic compounds from carbon dioxide.

Q. The rice variety grown in India belongs to …….. species

  • indica

  • Japomca

  • asiatica

  • javanica

Ans

• indica

Detail

Rice (Oryza sativa) varieties are commonly grouped into following 3 sub-species. indica: Rice grown in India belongs to this sub-species. They are awnless or possess short and smooth awns.

Q. India is the Largest ……….Produtecr,Consumer and exporter in the world 

  • Rice
  • Wheat
  • Pearlmillet
  • Cotton

Ans

Cotton

Detail
IndiaCurrent estimates for world production are about 25 million tonnes or 110 million bales annually, accounting for 2.5% of the world’s arable land. India is the world’s largest producer of cotton. The United States has been the largest exporter for many years.

Q. The sowing time of boro or dalua rice is

  • Nov — Dec

  • June — July

  • May — June

  • March — April

Ans

 Nov — Dec

Detail

Summer rice is called as Rabi rice. It is known as ‘Boro’ in Assam and West Bengal, ‘Dalua’in Orissa, ‘Dalwa’ in Andhra Pradesh, ‘Punja’ in Kerala and ‘Navarai’ in Tamil Nadu and ‘Garma’ in Bihar. The sowing time of summer rice is November to February and harvesting time is March to June.

Q. ICRISAT researchers have developed strategies to keep groundnut free of which toxins? 

  • Aflatoxin
  • Fungal toxin
  • Both A and B
  • None

Ans

Both A and B

Detail

Researchers at the International Crops Research Institute for the Semi-Arid Tropics (ICRISAT) in Hyderabad have developed dual strategies to keep groundnuts almost free of aflatoxin — a toxin produced by the fungi Aspergillus flavus and Aspergillus parasiticus — contamination

Q. In Wet bed rice nursery, seedling is ready for transplanting in days

  • 10 to 15

  • 15 to 20

  • 20 to 25

  • 25 to 30

Ans

 15 to 20

Detail

Seedlings are ready for planting within 14 20 days after seeding (DAS).


Q.The basic principal of taking crop rotation is ?

  • To get higher crop production
  • To maintain the fertility of the soil
  • To get higher returns per unit area of the Soil
  • To keep the weed under control

Ans

To maintain the fertility of the soil

Detail

A basic principle of crop rotation is not to grow the same thing in the same place two years running. In fact, the larger the gap between a crop occupying the same piece of ground the better.

Q.In dwarf wheat sowing depth is related to

  • Temperature

  • Coleoptile length

  • Rainfall

  • Radicle length

Ans

 Coleoptile length

Detail

The dwarf wheat should be sown only at 5-6 cm depth as they have shorter coleoptiles.

Q. Mycorrihiza-infected plants show better growth than uninfected plants especially on ?

  • Low fertility soils
  • High fertility soils
  • Marshy soils
  • Desert soils

Ans

Low fertility soils

Detail

Mycorrhizal fungi live in symbiosis with the roots of a large variety of plants, including trees, shrubs, annuals and perennials

Q. The Bacteria responsible for nitrogen fixation in soyabean is ? 

  • Rhizobium japonicum
  • Rhizobium Phaseoli
  • Rhizobium Leguminosarum
  • Rhizobium Glycicum

Ans

Rhizobium japonicum

Detail

Soybeans are legumes, plants that can have a symbiotic relationship with nitrogenfixing bacteriaRizobium japonicum

Q. What is Relay cropping?

  • The following crop is sown before the harvesting Of preceding crop

  • Repeated sowing Of crop in same field

  • Growing Of two crops simultaneously

  • None Of these

Ans

The following crop is sown before the harvesting Of preceding crop

Detail

Relay cropping is essentially a special version of double cropping, where the second crop is planted into the first crop before harvest, rather than waiting until after harvest as in true double-cropping.

Q. Formula for calculating cotton ginning percentage is

  • Weight of cotton seed / weight Of cotton lint x 100
  • Weight of cotton lint / weight Of seed cotton x 100
  • Weight Of cotton lint x weight Of seed cotton
  • Weight Of cotton lint x weight Of seed cotton/ 100

Ans

 Weight of cotton lint / weight Of seed cotton x 100

Detail

120 cm x 45 cm plant geometry recorded maximum ginning per cent (35.74%)

Q. Black cotton soil is rich in

  • Montmorillonite

  • Chlorite

  • Illite

  • Kaolnite

Ans

Montmorillonite

Detail

Black soils are poor in nitrogen, phosphorus and organic matter. The soils are generally rich in montmorillonitic and beidellitic group of clay minerals.


Q. Which mango received the GI tag in May 2017 ?

  • Amrapali
  • Alphonso
  • Beganpalli
  • Neelam

Ans

Beganpalli

Detail

The Banganapalle mango in the first week of May 2017 received a Geographical Indication (GItag. This makes Andhra Pradesh the proprietor of the variety known for its sweetness

Q. IARI has developed early maturing genotype(mature in 1 20 days) of which dal?

  • Black gram
  • Arhar
  • Green gram
  • Masoor

Ans

Arhar

Detail

Indian Agricultural Research Institute has developed early maturing (120 days) arhar genotype.

Q. Tilth is related to

  • Soil aggregates shape
  • Soil aggregates size distribution
  • Soil aggregates arrangement
  • All of these

Ans

All of these

Q. Chipsona is variety of 

  • Sweet potato
  • Potato
  • Wheat
  • Sorghum

Ans

Potato

Q.Three improved varieties of Khesari dal have been released for general cultivation, Which are they?

  • Ratan, Prateek, Beejak
  • Ratan, Prateek, Shyam
  • Ratan, Prateek, Mahateora
  • None

Ans

Ratan, Prateek, Mahateora

Detail

Three new varieties of kesari dal – Ratan, Prateek and Mahateora – have been released for general cultivation, Agriculture Minister Radha Mohan Singh

Q.Herbicide used in Zero tillage is 

  • paraquat

  • Alachlor

  • Fluchloralin

  • Pendimethalin

Ans

 paraquat

Detail

Paraquat is a toxic chemical that is widely used as an herbicide (plant killer), primarily for weed and grass control.


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