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 : Prohexadione calcium a plant growth regu lator affect efficacy of which of the following herbicides in peanut a). acifluorfen b). bentazon c). imazethapyr d). None
Last Answer : d). None
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
Last Answer : d). All
Description : efficacy of an activator adjuvant is a function of a). Adjuvant only b). Herbicide only c). Both a&b d). Antagonism
Last Answer : c). Both a&b
Description : . In india herbicides are registered un der which of the following Act a). Herbicide Registration Act b). Insecticide Act, 1968 c). Environment Policy, 2005 d). Indian Agrochemicals Registration Act
Last Answer : b). Insecticide Act, 1968
Description : High levels of Adoption of herbicide resistant crops have dramatically ____________ the use of herbicides a).I ncreased b). Decreased c). No effect d). None of the above
Last Answer : a).I ncreased
Description : Herbicide Resistance can be managed through a). Stop to Use of herbicides with the same mechanism of action b). Use proactive weed control c). Use of post emergence herbicides with at least one mechanism of action d). All of the above
Last Answer : d). All of the above
Description : Which herbicide is pre - plant applied herbicides ? a). Dalapon b). 2,4-D c). Alachlor d). All
Last Answer : a). Dalapon
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 : Application of organophosphorus group of pesticides along with which herbicides cause injury to crops a). Triazines b). Ureas c). Both d). None
Last Answer : c). Both
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 : 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 : . Herbicide spray drift can be reduced by a). Increasing the droplet size b). Forming a foam c). Making invert emulsion d). All of these
Last Answer : d). All of these
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 : Direct contact herbicide application can be achieved by a). Re-circulating sprayer b). Weed wick wiper c). Roller applicator d). All
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 : Which of the plants will show more susceptibility to herbicide application? a). Stressed b). Healthy c). Old d). all
Last Answer : a). Stressed
Description : Production practices that influence weed shift are a). Effectiveness of weed management program b). Speed of weed shift occurrence c). Interface areas d). All
Description : Foundation for phenomenal achievement in modern chemical weed management a). Safeners b). Adjuvants c). Selectivity d). Herbicide combinations e). None
Last Answer : c). Selectivity
Description : Use of catalyst is a must in the ammonia manufacture, because the reaction is reversible as well as the heat of dissociation of N2 & H2 is high. The presence of promoter along with the catalyst helps in ... B) Increasing the effectiveness (C) Improving the strength & heat resistance (D) All a, b & c
Last Answer : (D) All a, b & c
Description : To manage grassy weed flora in barley which of the herbicides is to be applied a). Pendimethalin b). Isoproturon c). a and b d). Metsulfuron
Last Answer : c). a and b
Description : Which of the herbicides can be used in gram crop? a). Pendimethalin b). Metolachlor c). Fluchloralin d). All
Description : To manage mixed weed flora in barley which of the herbicides is to be applied a).2,4-D b). Isoproturon c). a and b as tank mix d). None of these
Last Answer : c). a and b as tank mix
Description : Herbicides inhibiting amino acid synthesis a). Imadazolinone b). Sulfonamide c). aminoacid derivatives d). all
Last Answer : d). all
Description : Growth regulating herbicides that act simi lar to that of endogenous auxin (IAA) a). Benzoic acid b). pyridine carboxylic acid c). quinoline carboxylic acid d). All
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 : Herbicides disrupting cell membranes a). Bipyridilliums b). diphenylethers c). Both d). Ureas
Description : Which type of herbicides act as growth pro moter under sub-lethal dose a). Phenoxys b). Triazines c). Ureas and uracils d). All
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 : At sub lethal dose which of the herbicides improves colour of the apple a). 2,4-D b). 2,4,5-T c). MCPA d). All of these
Last Answer : b). 2,4,5-T
Description : Herbicides of which group are generally incorporated in soil? a). Carbamate b). Dinitroaniline c). Triazine d). Both a and b
Description : Which of the herbicides are classified as highly toxic a). Paraquat and diquat b). DNBP and DNOC c). 2,4,5-T and PCP 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 : 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 : . An approach where bio-herbicides are used to control indigenous weed spe cies a). Inundative approach b). Inoculative approach c). Classical approach d). None of the above
Last Answer : a). Inundative approach
Description : Multiple resistance is the phenomenon in which a weed is resistant to two or more herbicides having a). same mechanisms of action b). different mechanisms of action c). same chemistry d). different chemistry
Last Answer : b). different mechanisms of action
Description : Sulfonylurea herbicides inhibits a). ALS b). EPSP synthase c). PSI d). PSII
Last Answer : a). ALS
Description : Herbicides which avoids photodecomposition by being rapidly absorbed a.)Dinitroanilines b).Pinoxaden c).Sethoxydim d).quizalofop-p-ethyl
Last Answer : c).Sethoxydim
Description : A farmer, in order to save one spraying operations mix herbicides, insecticide, fungicide etc. at the time of spray, to achieve this feature add a). Compatibility agents b). Spreaders c). Activators d). Adhesive
Last Answer : a). Compatibility agents
Description : Microbial breakdown of phenoxy herbicides such as 2,4-D and MCPA is enhanced by addition of a). Nitrate b). Sulphate c). Phosphate d). Chlorate
Last Answer : c). Phosphate
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 : Which of the following herbicides will be tightly bound to the soil? a). Trifluralin KOC(mL/g)= 7000 b). Paraquat KOC(mL/g)= 10,00,000 c). Glyphosate KOC(mL/g)= 24,000 d). Alachlor KOC(mL/g)= 124
Last Answer : b). Paraquat KOC(mL/g)= 10,00,000
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 : Herbicides are more tightly bound to soils under which of the condition a). Field capacity b). Saturated c). Both a and b d). Dry
Description : Herbicides prone to photodecomposition such as Trifluralin, monuron, chloramben and PCP should be applied in a). Morning b). Evening c). Afternoon d). all
Last Answer : b). Evening
Description : Highly soluble herbicides like 2,4-D salt, Dalapon and TCA have to be avoided in which of the soil type a). Peat b). Red c). Clay d). Sandy
Last Answer : d). Sandy
Description : The type of soils which require higher dose of herbicides to be effective is a). Inceptisols b). Histosols c). Oxisols d). Ultisols
Last Answer : b). Histosols