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 : . 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 : 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 : 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 : Competitive ability of the crops in decreas ing order a). barley>rye>wheat >oats b). oats>wheat> rye> barley c). rye>barley>oats> wheat d).wheat>oats>barley >rye
Last Answer : a). barley>rye>wheat >oats
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 : 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 : Competitive crops such as corn or soybean require weed-free period of a). 2 months b). 3-4 weeks c). 3 months d). None of the above
Last Answer : b). 3-4 weeks
Description : The cost of any activity measured in terms of the value of the next best alternative forgone a). Economic cost b). Variable cost c). Opportunity cost d). Marginal cost
Last Answer : c). Opportunity cost
Description : Economic cost is the sum of________ a). Variable and fixed costs b). Variable, fixed and opportunity costs c). Fixed and opportunity costs d). Variable, fixed and marginal costs
Last Answer : b). Variable, fixed and opportunity costs
Description : Reputation' in the context of an organization's resources can provide competitive advantage because: a) It is difficult to copy b) It is based on word-of-mouth c) It is a threshold resource d) It is explicit
Last Answer : It is difficult to copy
Description : 'Reputation' in the context of an organization's resources can provide competitive advantage because: A. It is difficult to copy B. It is based on word-of-mouth C. It is a threshold resource D. It is explicit
Description : Corporate strategy planners are concerned with many different issues as they attempt to match the organisation's __________ with the opportunities and risks in the environment. A)strengths B)mission statement C)strategic business units D)resources E)competitive advantages
Last Answer : D)resources
Description : A ceremonial weed a). Asparagus racemosus (Shatawari) b). Cynodon dactylon (Dhoob ghaas) c). Both a and b d). Digitaria sanguinalis
Last Answer : c). Both a and b
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 : The ecological phenomenon of plant-plant interference a). Competition b). Allelopathy c). Both d). None
Last Answer : c). Both
Description : Herbicides disrupting cell membranes a). Bipyridilliums b). diphenylethers c). Both d). Ureas
Description : From site of uptake to site of action, fluazi fop-butyl move in a). water conducting stream b). sap conducting stream c). Both d). None
Description : In India, Striga is a problem of a). Sorghum b). Pearlmillet c). Both d). None
Description : The most commonly used herbicide in rub ber plantation a). Amitrole T b). Paraquat c). Both d). None
Description : Application of which herbicide at 5-10% of emergence in potato is more common in India? a). Paraquat b). Diquat c). EPTC d). Both a and b
Description : Alachlor is an effective pre-emergence her bicide in ______ a). Maize b). Soybean c). Both d). None
Description : Which of the weeds are rapidly controlled by MCPA than 2,4-D a). Nutsedge b). Canada thistle c). Both d). None
Description : Application of organophosphorus group of pesticides along with which herbicides cause injury to crops a). Triazines b). Ureas c). Both d). None
Description : Inhibition of electron transfer in photosys tem II is the reason for herbicide action in a). Nitriles b). Ureas c). Both a and b d). None
Description : Which altra low volume sprayer is used for controlled droplet application a). Herbi sprayer b). Micron herbi sprayer c). Both a and b d). None of these
Description : Herbicides of which group are generally incorporated in soil? a). Carbamate b). Dinitroaniline c). Triazine d). Both a and b
Description : MCPA was developed during 1945 in Eng land by a). W.G. Templeman b). W.A. Sexton c). Both of them d). None of these
Last Answer : c). Both of them
Description : 2,4-D was developed during 1945 in USA by a). P.W. Zimmerman b). A.E. Hitchkock c). Both a and b d). None of these
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
Description : . Herbicide deactivation of selectivity in plants is achieved by a). Herbicide metabolism b). Herbicide conjugation c). Both a and b d). None of these
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 : . Herbicide effectively controls Saccharum and Sorghum halepense only at pre flowering stage a). Diuron b). Atrazine c). Amitrole d). Both a and c
Last Answer : d). Both a and c
Description : . In which herbicide, micro-capsulation for mula is commercially available a). Alachlor b). Metachlor c). Both a and b d). Atrazine
Description : . Commonly used post-emergence herbicide in wheat a). 2,4-D b). Isoproturon c). Atrazine d). Both a and b
Description : Early post-emergence treatment is followed in a). Potato b). Sugarcane c). Both a and b d). Rice
Description : A herbicide both soil and foliage active a). 2,4-D b). Isoproturon c). Diuron d). All of these
Last Answer : d). All of these
Description : Which is foliage acting herbicide? a). Glyphosate b). Paraquat c). EPTC d). Both a and b
Description : Which is soil acting herbicide? a). Fluchloralin b). EPTC c). Both a and b d). Glyphosate
Description : The weed less responsive to nitrogen a). Cyperus b). Cynodon c). Both a and b d). None of these
Description : Implements commonly used in dry farming areas a). Sweep b). Blade harrow c). Spike tooth harrow d). Both a and b
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
Description : A simple perennial weed a). Ipomoea carnea b). Lantana camara c). Both a and b d). None of these
Description : . Acidophile weed a). Digitaria sanguinalis b). Borreria sp c). Both a and b d). None of these
Description : . A basophile weed a). Alkali grass (Puccinallia sp) b). Quack grass c). Amaranth sp d). Both a and b
Description : Growth of the weed is reduced due to root exudates of maize a). Chenopodium album b). Amaranthus retroflexus c). Both a and b d). None of these
Description : . Common weed in pasture land a). Tephrosia procumbens b). Boerhaavia diffusa c). Both a and b d). None 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
Description : . Mimicry weed in wheat field a). Phalaris minor (Canary grass) b). Wild oat c). Both a and b d). None of these