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 : A practice that does not necessarily involve tillage a). Summer ploughing/hot weather cultivation b). Stale seed bed c). Soil solarization d). None
Last Answer : c). Soil solarization
Description : Blind hoeing with bullock/tractor drawn spike-tooth harrow successfully controls weeds in a). Potato b). Sugarcane c). Maize d). Both a and b
Last Answer : d). Both a and b
Description : The practice that directly hit soil weed seed bank in minimizing future weed infestation a). Microwave irradiation b). Soil solarization c). Stale seed bed d). All e). None
Last Answer : d). All
Description : Removal of off type plants from a seed field is termed as: a. Weeding b. Rouging c. Hoeing d. All of abov
Last Answer : Rouging
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 : 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 : Spudding involving hand weeding/ hoeing added by a sharp edged sickle is most common in a). Wheat b). Sugarcane c). Sesame d). Rice
Last Answer : d). Rice
Description : Paddy cono weeder is useful for. a) Weeding between rows of crops like cotton for sugarcane. b) For uprooting and burying weeds in between standing rows of rice crops in in wetland. c) For weeding in raw crops in rain fed. d) For placing seed in continuous flow.
Last Answer : For uprooting and burying weeds in between standing rows of rice crops in in wetland.
Description : Herbicide Antidotes a). protect crop plants b). harm crop plants c). Protect weeds d). Harm weeds
Last Answer : a). protect crop plants
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
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 : Which of the following gives effective control of Phalaris minor in wheat a). Hand weeding b). Inter-cultivation c). Flaming d). Clodinafop-proparygyl
Last Answer : d). Clodinafop-proparygyl
Description : Cultural practice reducing weed population a). Arresting flowering b). Deep ploughing c). Puddling d). All of these
Last Answer : d). All of these
Description : Blind hoeing is recommended for – 1) Wheat 2) Maize 3) Groundnut 4) Sugarcane
Last Answer : 4) Sugarcane
Description : Stale seed bed technique of weed control is a
Last Answer : Ans.Cultural method
Description : To control broad-leaved weeds in barley, which of the herbicide is most suitable a). 2,4-D b). Metsulfuron c). Alachlor d). Both a and b
Description : When the weeds are under pressure, the herbicides enter the leaf a). less readily b). more readily c). do not enter d). entry not affected
Last Answer : a). less readily
Description : Which of the following pre-emergence her bicides can be applied with herbicides that have efficacy with emerged weeds a). Chloracitamide b). Thiocarbamates c). Dinitroanilines d). All
Description : Commonly used chemical fertilizer to con trol submerged weeds and water bloom non -selectively a). Anhydrous ammonia b). Ammonium sulphate c). Ammonium nitrate d). Urea
Last Answer : d). Urea
Description : Present day versatile herbicide to control difficult, perennial, broadleaved weeds and brushes in grasslands a). Alachlor b). Atrazine c). Picloram d). All
Last Answer : c). Picloram
Description : Butachlor has to be applied to control weeds in upland rice at a). Immediately after sowing b). 2 DAS c). 6-8 DAS d). 15 DAS
Last Answer : d). 15 DAS
Description : Which of the weeds are rapidly controlled by MCPA than 2,4-D a). Nutsedge b). Canada thistle c). Both d). None
Last Answer : c). Both
Description : 4. Reverse metabolism induce the suscepti bility to weeds by a). 2,4-D b). MCPA c). Both a and b d). None of these
Last Answer : c). Both a and b
Description : . Which is the widely used herbicide to con trol broadleaved weeds in winter grains? a). 2,4-D b). MCPA c). Both a and b d). Atrazine
Description : Biological weed control is not successful because a). Not possible to eradicate weed b). Bioagents are weed specific c). Controlled only introduced weeds d). All of these
Description : An eradication method of weed control a). Killing underground parts of weeds by tillage b). Using soil sterilants c). Repeated foliar application on perennial weeds d). All of these
Description : Industrial weeds can be controlled by using a). Non selective herbicides b). Selective herbicides c). Soil sterilants d). Both a and c
Last Answer : d). Both a and c
Description : In paddy field which of the following con trols weeds effectively? a). Puddling b). Transplanting c). Manuring d). Both a and b
Description : Which of the weeds make harvesting diffi cult a). Canada thistle b). Cocklebur c). Wild safflower d). All of these
Description : he earliest attempt to control weeds by herbicides was made in 1937 in Pun jab to control Carthamus oxyacantha by using a). Sulfosulfuron b). Atrazine c). Sodium arsenate d). 2,4-D
Last Answer : c). Sodium arsenate
Description : A herbicide for controlling weeds in grassland and pastures a). 2,4-D b). Carfentrazone c). Metsulfuron-methyl d). All
Description : Weed intensity if number of weeds is 110/m2 and wheat plants are 90/m2. a). 55% b). 110% c). 22.5% d). 77.5%
Last Answer : a). 55%
Description : Herbicides are less effective on weeds under which of the soil condition a). Field capacity b). Saturated c). Both a and b d). Dry
Last Answer : d). Dry
Description : Generally weeds seeds are abundant at a depth of a). 1.0-1.5cm b). 5 cm c).10cm d).15cm
Last Answer : a). 1.0-1.5cm
Description : Percent reduction in yield in case of onion due to weeds is a). 20-30 b). 30-35 c). 60-70 d).15-20
Last Answer : c). 60-70
Description : Percent reduction in grain yield of transplanted rice due to weeds is a). 20-40 b).10-30 c).15-20 d).15-45
Last Answer : d).15-45
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 : The condition intensifies the spread of perennial propagules of weeds after being exposed by tillage a). Hot weather b). Rainfall c). High light intensity d). High wind
Last Answer : b). Rainfall
Description : Ploughing is done to : A. Improve soil aeration C. Increase water holding capacity B. Destroy weeds D. All are correct
Last Answer : All are correct
Description : The soil conservation method in which mountain slope is cut into step is – (1) Contour ploughing (2) Cover planting (3) Strip cropping (4) Terracing
Last Answer : (4) Terracing Explanation: In agriculture, a terist is a piece of sloped plane that has been landscaped into a series of successively receding flat surfaces or platforms, which resemble steps, for ... and surface run off and are effective for growing crops requiring much water, such as rice.
Description : The soil conservation method in which mountain slope is cut into step is (1) Contour ploughing (2) Cover planting (3) Strip cropping (4) Terracing
Last Answer : Terracing
Description : The falling down of crop due to untimely rain and strong winds is known as _______. a) sowing b)lodging c)weeding d)logging
Last Answer : b)lodging
Description : True potato seed (TPS) enough for planting one ha. crop.
Last Answer : Ans.40-45 gm
Description : Which equipment is used for weeding in Row crops in rain fed. a) Puddy cono weeder b) Engine operated weeder c) Dry land weeder d) Seed drill
Last Answer : Dry land weeder
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 : 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