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 : A very potent herbicide for the control of perennial, broad-leaved weed and brushes a). Atrazine b). 2,4-D c). Picloram d). Amitrole
Last Answer : c). Picloram
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 : Which is foliage acting herbicide? a). Glyphosate b). Paraquat c). EPTC d). Both a and b
Description : A herbicide move through water conducting tissue a).Paraquat b). DSMA c). Glyphosate d). Atrazine
Last Answer : d). Atrazine
Description : A herbicide move through sap conducting tissue a).Paraquat b). Diquat c). MSMA d). Glyphosate
Last Answer : d). Glyphosate
Description : A herbicide requiring good spray coverage of all foliage for effective control of a weed population a).Paraquat b). Glyphosate c). Atrazine d). Isoproturon
Last Answer : a).Paraquat
Description : Which is the contact, non-selective and zero persistent herbicide in soils? a). Paraquat b). Atrazine c). 2,4-D d). Bromacil
Last Answer : a). Paraquat
Description : . Classic example for success of breeding herbicide resistant variety is a). Canola-rape variety resistant to triazine 22 b). Secale cereal resistant to paraquat c). Tracy-M soybean variety resistant to metribuzin d). All of these
Last Answer : d). All of these
Description : The herbicide perform better in sunny days a). 2,4-D b). Paraquat c). Simazine d). All of these
Description : . Which of these is not a broad spec trum herbicide a). Atrazine b). Paraquat c). Bromoxynil d). Glyphosate
Last Answer : c). Bromoxynil
Description : Paraquat herbicide belong to which group a). Bipyridylium b). Benzoic c). Carboxalic d). Uraciles
Last Answer : a). Bipyridylium
Description : Which herbicide is photosynthesis inhibitor ? a). Bromacil b). Glyphosate c). Paraquat d). 2,4-D
Last Answer : a). Bromacil
Description : Which herbicide is systemic and translocated type ? a). Atrazine b). Diuron c). Paraquat d). Glyphosate
Description : A pre plant incorporated herbicide a). Paraquat b). Delapon c). Uracils d). Fluchloralin
Last Answer : d). Fluchloralin
Description : A soil applied herbicide a). Glyphosate b). Paraquat c). 2,4-DB d). Fluchloralin
Description : A non-selective contact herbicide a). Glyphosate b). Paraquat c). 2,4-D d). None
Last Answer : b). Paraquat
Description : Selective post-emergence herbicide a). 2,4-D b). Glyphosate c). Paraquat d). All
Last Answer : a). 2,4-D
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 : . Commonly used post-emergence herbicide in wheat a). 2,4-D b). Isoproturon c). Atrazine d). Both a and b
Description : Herbicide commonly available as fumigant is a). Methyl bromide b). Metham c). Allyl alcohol d). All of these
Description : Commonly used wetting agent for herbicide spray in India a). Soap solution b). Teepol c). Uphar d). All of these
Description : Interaction between the herbicide 2,4- D and the herbicide 2,4,5-T is a). antagonistic b). synergetic c). additive d). Enhancement
Last Answer : a). antagonistic
Description : A cell membrane disrupter a).Paraquat b). Acifluorfen c). Difenzoquat d). All
Last Answer : d). All
Description : A amino acid derivative a).Paraquat b). Glyphosate c). 2,4-D d). None of these
Last Answer : b). Glyphosate
Description : . Through wetting of all foliage is unneces sary with which of the following a).glyphosate b). paraquat c). diquat d). None of these
Last Answer : a).glyphosate
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 : Herbicidal control of pre-established thatch grass (Imperata cylindrical) con trol in tea orchard a). Glyphosate + 2,4-D b). Oxyflourfen + 2,4-D c). Diuron + 2,4-D d). Paraquat + 2,4-D
Last Answer : a). Glyphosate + 2,4-D
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 : The mode of action of paraquat is a). Amino acid synthesis inhibition b). Pigment inhibition c). Cell membrane disruption d). Shoot inhibition
Last Answer : c). Cell membrane disruption
Description : Paraquat is associated with inhibition of which of the following a). PSI b). PSII c). PPO d). HPPD
Last Answer : a). PSI
Description : Which element on adding to natural rub- ber makes it less sticky in hot weather and less hard in cold weather?
Last Answer : Sulphur
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 : 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 : . Herbicide deactivation of selectivity in plants is achieved by a). Herbicide metabolism b). Herbicide conjugation 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 : . In which herbicide, micro-capsulation for mula is commercially available a). Alachlor b). Metachlor c). Both a and b d). Atrazine
Description : A herbicide both soil and foliage active a). 2,4-D b). Isoproturon c). Diuron d). All of these
Description : Which is soil acting herbicide? a). Fluchloralin b). EPTC c). Both a and b d). Glyphosate
Description : Herbicide currently being used with herbicide resistant crops a). Glyphosate b). Glufosinate c). Both d). None
Last Answer : c). Both
Description : Transgenic herbicide resistant crops were developed using a).Conventional breeding b).Genetic engenering c).None d).Both
Last Answer : d).Both
Description : Non transgenic herbicide resistant crops were developed using a).Conventional breeding b).Genetic engineering c).None of the above d).Both
Last Answer : a).Conventional breeding
Description : Herbicide resistant crops are called as a).Transgenic b). Non transgenic c). Both transgenic and non trans genic d). None of the above
Last Answer : c). Both transgenic and non trans genic
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 : An important benzoic acid herbicide a).Dicamba b). 2,4-D c). Atrazine d). None of these
Last Answer : a).Dicamba
Description : Herbicide antidote interactions are a). synergistic b). antagonistic c). Enhancement d). None of these
Last Answer : b). antagonistic
Description : A concentrated band of a herbicide about 7 -10 cm below the soil surface is required to control a). Cyperus rotundus b). Convolvulus arvensis c). Oxalis d). All
Description : Herbicide loss by volatilization increases as which of the following increases a). Vapour pressure b). Soil moisture content c). Soil temperature d). all
Last Answer : d). all
Description : Coupling of intact herbicide molecules with sugars in living plants a). Metabolism b). reverse metabolism c). Conjugation d). None of these
Last Answer : c). Conjugation
Description : A synergistic herbicide combination a). 2,4-D + Docamba b). 2,4-D + atrazine c). Atrazine + alachlor d). All