Description : Ultra low volume sprayer consist of high spinning disc which makes droplet size a. 50 -100mm. b 40-100mm. c.35-100mm. d. None of above
Last Answer : Ans- c. 35-100mm.
Description : Besides NA and R 25788, other safeners to counteract the effect of carbamate herbi cide is a). CGA 43089 b). CGA 92194 c). Mon 4606 d). All of these
Last Answer : d). All of these
Description : Typically pre-plant soil incorporated herbi cide a). Fluchloralin b). Trifluralin c). EPTC d). All of these
Description : is the application of sprayer. a) To break the liquid droplet of effective size b) To distribute them uniformly event plants c) To regulate amount of liquid to avoid excessive application. d) All above them
Last Answer : All above them
Description : Direct contact herbicide application can be achieved by a). Re-circulating sprayer b). Weed wick wiper c). Roller applicator d). All
Last Answer : d). All
Description : . Herbicide spray drift can be reduced by a). Increasing the droplet size b). Forming a foam c). Making invert emulsion d). All of these
Description : Drift susceptible size of droplets in micron diameter is a). 150-200 b). 200-250 c). 250
Last Answer : c).
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 : 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 : Volume of spray fluid in ultra low vol ume spraying a).300-500 l/ha b).2-5 l/ha c).25-50 l/ha d).100-150 l/ha
Last Answer : b).2-5 l/ha
Description : Volume of spray fluid in ultra low vol- ume spraying a).300-500 l/ha b).2-5 l/ha c).25-50 l/ha d).100-150 l/ha
Description : With poor weed management, a field could shift to a). Predominant weed species b). Species not effectively controlled c). Species not responded to control meas ures d). All the above
Last Answer : d). All the above
Description : . Klamath weed (Hypericum perforatum) is controlled by an insect a). Chrysolina hyperici (Beetle) b). Chrysolina gamellata (Beetle) c). Agrilus hyperici (Root borer) d). All of these
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 : A weed not controlled by clodinafop propargyl in wheat a). Poa annua b). Phalaris minor c). Avena ludoviciana d). Lolium temulentum
Last Answer : a). Poa annua
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
Last Answer : d). Both a and b
Description : Application of organophosphorus group of pesticides along with which herbicides cause injury to crops a). Triazines b). Ureas c). Both d). None
Description : For a given application rate the number of droplet is inversely proportional to............of the diameter of droplets. A) Square b) cube C) one fifth d) none of the above
Last Answer : b) cube
Description : A selectivity achieved due to manipulation of time of application is called a).Biochemical b). Chronological c). Chemical d). Physical
Last Answer : b). Chronological
Description : Mid morning application of which of the herbicides is better than its evening applica tion a). Butachlor b). Alachlor c). Glyphosate d). Paraquat
Last Answer : d). Paraquat
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 : A weed escape/resist pre-emergence atrazine application in maize under mid hill conditions of Himachal Pradesh a). Ageratum conuzoides b). Commelina banghalensis c). Brachiaria ramosa d). All of the above
Last Answer : d). All of the above
Description : If cost of the herbicide is INR 1000 and application cost is INR 500 and net return over weedy is INR 15000, MBCR will be a). 35 b). 25 c). 15 d). 10
Last Answer : d). 10
Description : A application method to avoid herbicide drift a).Misting b).Wick wiping c).Foliar spray d).Basal barking
Last Answer : b).Wick wiping
Description : The most imprecise way of herbicide application a).Misting b).Aerial spraying c).Foliar spray d).Basal barking
Last Answer : a).Misting
Description : Herbicide application is mainly influenced by a). Application rate, timing and methods b). Application rate, weather conditions and soil types c). weather conditions, soil types and water chemistry d). All
Last Answer : a). Application rate, timing and methods
Description : Processes that break down the herbicides after application includes............................ a). Photo and microbial degradation b). adsorption and uptake c). leaching and runoff d). volatilization and run off
Last Answer : a). Photo and microbial degradation
Description : factors to consider in improving the effectiveness of herbicides application a). Increasing management diversity b). application timing c). inherent efficacy of herbicide d). All
Description : Chemigation is the process of application through a). Irrigation water b). Foliar spray c). Soil application d). Basal application
Last Answer : a). Irrigation water
Description : Which of the plants will show more susceptibility to herbicide application? a). Stressed b). Healthy c). Old d). all
Last Answer : a). Stressed
Description : In case of combined application of herbicides, application rate can be reduced in which of the following interaction a). Antagonistic b). Synergistic c). Additive d). None
Last Answer : b). Synergistic
Description : Application of bio-herbicides a). Aerial sprays b). Cut and paste c). Soil application d). All
Description : Environmental factors which increases the allelopathic effects are a).low soil fertility b). Warm wet condition c). Cold wet conditions d). a and b
Last Answer : d). a and b
Description : In soils with low fertility, the degradation of herbicides is a). Slow b). Constant c). Fast d). no effect
Last Answer : a). Slow
Description : The weather condition is optimum for herbicidal weed control? a). High temperature low humidity b). High temperature high humidity c). warm temperature high humidity d). cold temperature low humidity
Last Answer : c). warm temperature high humidity
Description : Which of the formulations has low leach ability in soils a). EC b). WP c). Granules d). WSC
Last Answer : c). Granules
Description : are the application of pedal sprayer a) Row crops b) Vegetables c) Nursery stocks d) Tall crops
Last Answer : Tall crops
Description : Application rate of sprayer is affected by a. forward of speed b. number of nozzle c. rate of discharge d. all of the above
Last Answer : d. all of the above
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
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 : Alachlor is an effective pre-emergence her bicide in ______ a). Maize b). Soybean 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
Last Answer : d). None
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