Description : A parasite in lucerne a). Cuscuta sp b). Orobanche sp c). Striga sp d). All of these
Last Answer : a). Cuscuta sp
Description : Striga densiflora and Orobanche aegyptica are the weeds of a). Rice and Wheat b). Sugarcane and Mustard c). Wheat and Sugarcane d). Oats and Rice
Last Answer : b). Sugarcane and Mustard
Description : Trap crop for Cuscuta sp a). Small grains b). Chickpea c). Mustard d). All
Last Answer : d). All
Description : . Trap crop for striga is a). Sunflower b). Cotton c). Cowpea d). All of these
Last Answer : d). All of these
Description : Pendimethalin is an effective treat ment for weed control in a). Brinjal, tomato, chillies etc b). Cabbage and cauliflower c). Onion and garlic d). All
Description : Food crops comprise. (1) Cotton, Tobacco, Sugarcane (2) Linseed, Castor, Turmeric (3) Foodgrains, Pulses, Edible oilseeds (4) Jute, Cotton, Chillies
Last Answer : Foodgrains, Pulses, Edible oilseeds
Description : Which of the following is a tropical monsoon crop? (a) Jowar (b) Chillies (c) Rice (d) Ragi
Last Answer : Ans: (c)
Description : Which crop propagated by asexual means: a. Sweet potato b. Chillies c. Cauliflower d. None of above
Last Answer : Sweet potato
Description : If weed population is 70/m2 and the crop 140/ m2, weed intensity would be a). 33.3% b). 66.6% c). 50% d). 73.4%
Last Answer : a). 33.3%
Description : Which of the herbicides can be used in gram crop? a). Pendimethalin b). Metolachlor c). Fluchloralin d). All
Description : A curvilinear relationship between weed density and crop yield was reported by a). Zimdahl 1980 b). Roberts and Bonds (1975) c). Cousens et al (1985) d). None of these
Last Answer : b). Roberts and Bonds (1975)
Description : The sigmoidal relationship between weed density and crop yield was proposed by a).Zimdahl 1980 b). Roberts and Bonds (1975) c). Cousens et al (1985) d). None of these
Last Answer : a).Zimdahl 1980
Description : . A non-competitive crop requiring weed free period of three or more months a). Maize b). Rice c). Soybean d). Onion
Last Answer : d). Onion
Description : A period in the ontogeny of crop at which maximum crop weed competition occurs is called a). Economic threshold b). Gain threshold c). Competitive threshold d). None
Last Answer : d). None
Description : The effective solution to manage weed shifts a). Herbicide combinations b). Herbicide rotations c). Crop rotations d). All
Description : The competitive crop requiring weed free period of about 3-4 weeks a). Soybean b). Carrot c). Garlic d). Onion
Last Answer : a). Soybean
Description : . A shortest time span in the life cycle of a crop when weeding results in highest eco nomic returns a). Economic threshold b). Critical period c). Competitive threshold d). None of these
Last Answer : b). Critical period
Description : Propanil has to be applied to rice crop at a). One leaf stage b). 2-3 leaf stage c). 4 leaf stage d). None of these
Last Answer : b). 2-3 leaf stage
Description : Which formulation of 2,4-D has fastest ab sorption by crop plants? a). Ethyl ester b). Dimethylamine c). Na salt d). All
Last Answer : a). Ethyl ester
Description : Persistence herbicides pose hazard in soil when a). High persistence herbicides are used b). Crop failure necessitate re-planting c). Susceptible crop follows a short crop d). All
Description : November sown berseem crop induces the weed a). Chenopodium sp b). Anagallis sp c). Vicia sp d). All of these
Description : Complete crop failure is caused in which of the following crops a). Vegetables b). Upland rice c). both a and b d). Wheat
Last Answer : c). both a and b
Description : The official peer-reviewed Journal of the EWRS (European Weed Research Society) is a). Journal of Crop and Weed b). Weed Research c). Weed Science
Last Answer : b). Weed Research
Description : .Which crop is an indicator plant for the bio assay of Triazines and Aliphatics? a). Sugarbeet b). Sorghum c). Cotton d). Mustard
Last Answer : a). Sugarbeet
Description : Which crop exhibit direct allelopathy? a). Sorghum b). Maize c). Lentil d). Alfalfa
Last Answer : a). Sorghum
Description : . A crop has residual allelopathy on wheat a). Rice b). Lentil c). Maize d). Sorghum
Last Answer : b). Lentil
Description : .Phenolic acid as root exudates of which crop has detrimental effects on wild mustard? a). Wheat b). Oats c). Chickpea d). a & b
Last Answer : d). a & b
Description : Continuous cropping of which legume crop cause auto allelopathy? a). Chickpea b). Alfa-alfa c). Cowpea d). Pigeonpea
Last Answer : b). Alfa-alfa
Description : Root exudates of which crop has allelo pathic effect on Chenopodium album? a). Wheat b). Oat c). Pea d). All
Description : Glufosinate (pat) resistant trait for maize crop first sale in which year ? a).2000 b).1992 c).1995 d).1997
Last Answer : d).1997
Description : Glyphosate (Cp4 epsps) resistant trait for sugarbeet crop first sale in which year ? a).1998 b).1986 c).2007 d).2003
Last Answer : c).2007
Description : Gluphosate + Glufosinate (Double Stack) is resistant trait of which crop a).Canola b). Sugarbeet c). Soybean d).Maize
Last Answer : d).Maize
Description : Glufosinate (Bar) is resistant trait of which crop a).Soybean b).Sugarbeet c).Maize d).Cotton
Last Answer : d).Cotton
Description : Among the herbicide resistant crops, which crop was the most dominant transgenic crops in 2010 a).Soybean b). Cotton c). Maize d).Sugarbeet
Last Answer : a).Soybean
Description : Bromoxynil (Bxn) is resistant trait of which crop a).Soybean b).Sugarbeet c).Maize d).Cotton
Description : A herbicide applied to the soil before planting a crop is called a a). pre-emergence b). Post-emergence c). Pre-plant d). None
Last Answer : c). Pre-plant
Description : Herbicide Antidotes a). protect crop plants b). harm crop plants c). Protect weeds d). Harm weeds
Last Answer : a). protect crop plants
Description : Critical period of crop weed competition in sugarcane is a). 30-40 days b). 30-120 days c). 10-40 days d). 15-30 days
Last Answer : b). 30-120 days
Description : The period at which maximum crop weed competition occurs is a). Critical period b). Dormancy c). Flaming d).Threshold
Last Answer : a). Critical period
Description : One to two flushes of weeds are destroyed before planting of crop is called a). Stale seed bed b). Blind hoeing c). Weeding d). Summer ploughing
Last Answer : a). Stale seed bed
Description : Factors affecting weed-crop interference are a). Period of weed growth b). Soil and climate influence c). Plant species effects d). All
Description : Wheat and bajra have critical period of crop-weed competition a).10-20 days b).15-30 days c). 30-45 days d). 20-40 days
Last Answer : c). 30-45 days
Description : A practice where one or two flushes of weeds are destroyed before seeding a crop a). Cheeling b). Stale seed bed c). Searing d). None
Last Answer : b). Stale seed bed
Description : Integrated weed management practices that a). Enhance crop competitive ability b). Decrease weeds ability to reduce yield c). Practices that eliminate weeds from an area d). Both a and b e). Both a and c
Last Answer : d). Both a and b
Description : State whether linseed is a Kharif or a Rabi crop and name the state where it is grown extensively. -SST 10th
Last Answer : Linseed is a Rabi crop. It is extensively grown in Madhya Pradesh.
Description : Which of the following is not primarily a rabi crop in India? (a) Wheat (b) Gram (c) Jute (d) Linseed
Description : Linseed crop require NPK dose of
Last Answer : Ans.60:40:20 kg ha
Description : Linseed crop is also known as
Last Answer : Ans.Flex
Description : The crop which occupies maxi-mum cultivated area in India is – (1) Rice (2) Wheat (3) Gram (4) Linseed
Last Answer : (1) Rice Explanation: India has the biggest area under rice cultivation, as it is one of the principal food crops. India is also one of the world's largest producers of white rice, accounting for 20% of all world rice production.
Description : The principle oil seed crop of India is (a) Sesame (b) Mustard (c) Linseed (d) Groundnu
Last Answer : (d) Groundnut