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


  • Punjab


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


  • Chemoauto-trophic organism


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


• indica


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



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


 Nov — Dec


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


Both A and B


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


 15 to 20


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


To maintain the fertility of the soil


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


 Coleoptile length


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


Low fertility soils


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


Rhizobium japonicum


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


The following crop is sown before the harvesting Of preceding crop


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


 Weight of cotton lint / weight Of seed cotton x 100


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




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




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




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


All of these

Q. Chipsona is variety of 

  • Sweet potato
  • Potato
  • Wheat
  • Sorghum



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


Ratan, Prateek, Mahateora


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




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

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