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Alternaria blight in mustard is caused by the fungus alternaria brassicae.
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Alternaria blight or leaf spot of sunflower is caused by alternaria helianthi.
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Alternate versions of the same gene are known as alleles.
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In india, the alternate host for black stem rust of wheat is berberis species.
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Rhizoctonia bataticola commonly infects soybean.
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The american scientist who received the 1970 nobel peace prize for contributions to the green revolution is norman e. borlaug.
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Upland or american cotton belongs to gossypium hirsutum.
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Urea is the fertilizer that supplies nitrogen in amide form.
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Ammonium-based fertilizers are unsuitable for alkaline soils.
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The water vapour present in a given volume of air refers to absolute humidity.
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The amount of water vapour present per kilogram of air is called specific humidity.
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The mango hybrid amrapalli is derived from dashehari × neelam.
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Alkaline soils are also known as solonetz or black alkali soils.
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Alkaline soils contain more hydroxyl ions (oh⁻) and fewer hydrogen ions (h⁺).
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Sorghum leaves contain the poisonous compound hcn, formed from the dhurin alkaloid.
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All cash and material costs incurred directly by the farmer are grouped as cost-a.
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The all india soil and land use survey headquarters is at iari, new delhi.
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All insecticides fall under the broader category of pesticides, but not all pesticides are insecticides.
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A community refers to all interacting populations of different species within an ecosystem.
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Weather events such as rain, fog, frost, and clouds occur in the troposphere.
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Allahabad safeda and lucknow-49 are popular guava varieties.
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Alleppey is a known variety of turmeric.
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Assigning treatments to experimental units in a random way is called randomization.
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Alphonso is a famous mango variety.
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Major insect threats to wheat include termites and white grubs.
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The ear cockle nematode of wheat is anguina tritici.
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Tundu or yellow ear rot of wheat results from infection by anguina tritici along with corynebacterium tritici.
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Hot water treatment at 50°c for 2 hours helps manage tundu disease.
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The wheat stem borer (sesamia inferens) is mostly active during night.
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The yellow stem borer of rice is scirpophaga incertulas.
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Cotton accounts for more than half of india’s pesticide consumption because of the large number of pests.
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Hopper burn in cotton is caused by feeding of the leafhopper amrasca biguttula.
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The cotton whitefly belongs to the family aleyrodidae.
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Whitefly (bemisia tabaci) spreads the cotton leaf curl virus.
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Shedding or drying of squares in cotton is the result of attack by the spotted bollworm (earias vitella).
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Rosetting of cotton flowers is caused by the pink bollworm (pectinophora gossypiella).
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Double-seeded cotton bolls are also due to pink bollworm damage.
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Contact insecticides are mainly used to control bugs.
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Lepidopteran pests are effectively controlled by stomach poisons.
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The term ecosystem was introduced by a.g. tansley.
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“Tilt” is the trade name of the fungicide propiconazole.
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Tipping, centering, and plucking are routine operations in tea gardens.
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Tissue culture is an asexual or vegetative method of multiplying plants.
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Dormancy in tubers can be broken by soaking them in 1% thiourea plus 1 ppm ga₃ for one hour.
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Under waterlogged conditions, crops often show deficiency of zinc and copper.
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Weeds that are persistent and highly difficult to eliminate are termed noxious weeds.
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The 2009 united nations climate summit was held at copenhagen, denmark.
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Pressure is measured in units such as dynes/cm², newtons/m², or pascal.
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Forming roots on a plant part before detaching it from the parent plant is known as layering.
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The separation of sister chromatids during cell division is called disjunction.
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