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Q.Repetitive growing Of sole crop in same field is known as
- Relay cropping
- Mono cropping
- Multiple cropping
- Mix cropping
Mono cropping
Monocropping is the agricultural practice of growing a single crop year after year on the same land, in the absence of rotation through other crops or growing multiple crops on the same land polyculture. Corn, soybeans, and wheat are three common crops often grown using monocropping techniques.
Q. Under dry land condition most preferred herbicide for maize is ?
- Propanil
- Fluchloralin
- Butachlor
- Atrazine
Atrazine
Atrazine is a herbicide of the triazine class. It is used to prevent pre- and postemergence broadleaf weeds in crops such as maize (corn) and sugarcane
Q.Soils having 200 kg available K20/ha will be — fertile soil for K
- High
- Low
- Medium
- None Of these
Medium
Q. Field trials Of GM Mustard are complete. If approved, it become the ………….. genetically modified food crop to be grown commercially in the country?
- First
- Second
- Third
- Fourth
First
Q. Rocks formed from molten magma solidification at earth surface is rock
- Sedimentary
- Metamorphic
- Igneous
- None of these
Igneous
Igneous rocks (from the Greek word for fire) form when hot, molten rock crystallizes and solidifies. The melt originates deep within the Earth near active plate boundaries or hot spots, then rises toward the surface
Q. Apatite is rich source of
- N
- P
- K
- B
P
Apatite is the name of a group of phosphate minerals with similar chemical compositions and physical properties.
Q.Nitrification in the soil take place by?
- Reduction process
- Oxidation process
- Biological oxidation
- Both a & b
Biological oxidation
Nitrification is the biological oxidation of ammonia to nitrite followed by the oxidation of the nitrite to nitrate. The transformation of ammonia to nitrite is usually the rate limiting step of nitrification. Nitrification is an important step in the nitrogen cycle in soil.
Q. Bio-fortified variety Of Cauliflower is
- Pusa Sharda
- Pusa Betakeshari
- Pusa Kekti
- Pusa Kiran
Pusa Betakeshari
Biofortification can be defined as a process to increase the bioavailability and the concentration of nutrients in crops through both conventional plant breeding (White and Broadley, 2005) and recombinant DNA technology (genetic engineering) (Zimmermann and Hurrell, 2002).
Q. Which sugarcane hybrid clone variety was launched for the sub-tropical climate?
- 205
- 206
- 207
- 208
205
Q. Pedoturbation is the process of
- Mixing Of the soil
- Mixing of FYM in soil
- Mixing Of fertilizer in soil
- Mixing of pesticide
Mixing Of the soil
Pedoturbation involves mixing between soil horizons, and is an important factor in soil formation. Pedoturbation includes churning clays, cryoturbation, and bioturbation.
Q. Which GM Mustard variety is developed by DU ?
- DMH-12 or Dhara Mustard Hybrid-12
- DMH 13 or Dhara Mustard Hybrid- 13
- DMH-14 or Dhara Mustard Hybrid-14
- DMH-11 or Dhara Mustard Hybrid-11
DMH-11 or Dhara Mustard Hybrid-11
Dhara Mustard Hybrid-11, otherwise known as DMH – 11, is a genetically modified hybrid variety of the mustard species Brassica juncea. It was developed by Professor Deepak Pental from the University of Delhi, with the aim of reducing India’s demand for edible oil imports.
Q.Soil order having largest area in India is
- Alfisols
- Vertisols
- Inceptisols
- Entisols
Inceptisols
Inceptisols are a soil order in USDA soil taxonomy. They form quickly through alteration of parent material. They are more developed than Entisols. They have no accumulation of clays, iron oxide, aluminium oxide or organic matter.
Q. Which of the following rock is volcanic in native ?
- Basalt
- Diorite
- Monzonite
- Gabbro
Basalt
Basalt is a dark-colored, fine-grained, igneous rock composed mainly of plagioclase and pyroxene minerals.
Q.Mycorrhiza-infectad plants show better ability of absorption of the nutreients, especially ?
- Iron
- Maaganese
- Phosphorus
- Potassium
Phosphorus
mycorrhizas is a symbiotic association between a fungus and a plant. The term mycorrhiza refers to the role of the fungus in the plant’s rhizosphere, its root system. Mycorrhizae play important roles in plant nutrition, soil biology and soil chemistry.
Q.Nutrient index between 1.5 and 2.5 is categorized as ?
- High
- Low
- Medium
- None Of these
Medium
Detail
Soil nutrient index (NI)
Nutrient index value of <1.5 is taken as low, values between 1.5 –2.5 indicates medium and >2.5 as higher fertility status of the given area.
Q.Nitrogen is absorbed by the plants in the from ?
- only as NO3−
- Only as NH4+
- Both a & b
- None Of the above
Both a & b
Plants absorb nitrogen from the soil in the form of nitrate (NO3−) and ammonium (NH4+). In aerobic soils where nitrification can occur, nitrate is usually the predominant form of available nitrogen that is absorbed. … Ammonium ions are absorbed by the plant via ammonia transporters.
Q. The B horizon is generally absent in soils.
- Black soils
- Red soils
- Desert soils
- Brown hill soils
Black soils
The B horizon contains weathered, rough mineral soil with small deposits of humus.
Q.Most salt tolerant grass is
- Kamal grass
- Rhodes grass
- Para grass
- Bermuda grass
Kamal grass
Q. Most resistant mineral present in soil is ?
- Mica
- Quartz
- Hornblende
- None of above
Quartz
Quartz is a chemical compound consisting of one part silicon and two parts oxygen. It is silicon dioxide (SiO2). It is the most abundant mineral found at Earth’s surface, and its unique properties make it one of the most useful natural substances. Rock crystal quartz: Transparent “rock crystal” quartz.
Q. For the first time, scientists have developed Which fabric from the flax plant?
- Cotton
- Nylon
- Linen
- Rayon
Linen
Detail
Linen is a textile made from the fibers of the flax plant. Linen is laborious to manufacture, but the fiber is very strong,
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