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
Last Answer : c). Both a and b
Description : VELGO is a bioherbicide used against a). Echinochloa b). Parthenium c). Cenchrus d). Abutilon
Last Answer : d). Abutilon
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 : 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 : A widely used pre-plant herbicide in con servation agricultural systems a). Pendimethalin b). Trifluralin c). Glyphosate d). Fluchloralin
Last Answer : c). Glyphosate
Description : Which among the following bioherbi cide has control efficiency more than 90 per cent? a). Collego b). Devine c). CASST d). Biomal
Last Answer : a). Collego
Description : A bio-herbicide to control Poa annua a). Smolder (Alternaria destruens) b). Woad Warrior (Puccinia thaspeos) c). Sarritor (Sclerotinia minor) d). Camperico (Xanthomonas campestris)
Last Answer : d). Camperico (Xanthomonas campestris)
Description : .A test method using organism to deter mine the presence of herbicide effect is a). Herbicide analysis b). Bio assay c). Bio control d). None of these
Last Answer : b). Bio assay
Description : Which of the following is a monocot weed but broad-leaved plant? a). Eichhornia crasipus b). Commelina banghalensis c). Cynnotis axillaris d). All of these
Last Answer : d). All of these
Description : Weed species which has nematicidal prop erty a). Crotolaria b). Parthenium c). Eichhornia sp d). All of these
Description : .Collego was developed to control a). Aeschynomene indica b). Eichhornia c). Cuscuta d). Morrenia odorata
Last Answer : a). Aeschynomene indica
Description : If Echinochloa falls in frequency class ‘E’, the weed community is said to be a). Contiguous b). Heterogenous c). Homogenous d). Random
Last Answer : c). Homogenous
Description : Out of 50 quadrats studied, if Echinochloa is found in 26 quadrats, its frequency of occurrence would be a). 13% b). 26% c). 52% d). 68%
Last Answer : c). 52%
Description : If the count of Echinochloa in weedy check is 70 and that in a treatment 25/m2, weed control efficiency will be a). 54.3% b). 64.3% c). 73.4% d). 79.6%
Last Answer : b). 64.3%
Description : Ammonium nitrate acts as chemical stimu lant to control a). Wild oats b). Eleusine indica c). Echinochloa colona d). All of these
Description : A multi-season annual weed a). Echinochloa colona b). Eclipta alba c). Phyllanthus nirurii d). All of these
Description : . Mimicry weed in rice field is a). Wild rice (Oryza sativa var fatua) b). Echinochloa colona c). Echinochloa crusgalli d). All of these
Description : A dominant weed of puddle paddy soil a). Echinochloa b). Caesulina c). Eclipta sp d). All of these
Description : The most common weed in wheat a). Avena ludoviciana b). Echinochloa colona c). Panicum dichotomiflorum d). Eleusine indica
Last Answer : a). Avena ludoviciana
Description : .Which weed is considered as biopesti cide and severely inhibit the growth of water hyacinth? a). Parthenium b). Echinochloa c). Cuscuta d). Lantana
Last Answer : c). Cuscuta
Description : A separately excited generator as compared to a self-excited generator (a) is amenable to better voltage con-trol (b) is more stable (c) has exciting current independent of load current (d) has all above features
Last Answer : Ans: d
Description : Root exudates of wheat and oats which has detrimental effects on wild mustard con tain a). Phenolic acid b). Alkaloids c). Sulphides d). Lactones
Last Answer : a). Phenolic acid
Description : In paddy field which of the following con trols weeds effectively? a). Puddling b). Transplanting c). Manuring d). Both a and b
Last Answer : d). Both a and b
Description : .Which group of allelochemicals con tains Quinones and Coumarines? a). Flavinoids b). Cinnamic acid derivatives c). Tannins d). None
Last Answer : b). Cinnamic acid derivatives
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 : An important benzoic acid herbicide a).Dicamba b). 2,4-D c). Atrazine d). None of these
Last Answer : a).Dicamba
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 : 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
Last Answer : 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
Description : The most common mechanism of herbicide resistance is a). Enhanced metabolism b). Altered target site c). Sequestration d). All
Last Answer : b). Altered target site
Description : The herbicide susceptible to photodecom position a). Trifluralin b). Ethalfluralin c). Fluchloralin d). All
Description : The effective solution to manage weed shifts a). Herbicide combinations b). Herbicide rotations c). Crop rotations d). All
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 : The most commonly used herbicide in rub ber plantation a). Amitrole T b). Paraquat c). Both d). None
Last Answer : c). Both
Description : a very successful pre-emergence herbicide in banana in India a). Atrazine b). Alachlor c). Glyphosate d). Dalapon
Last Answer : b). Alachlor
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 : Herbicide which increase tuber size be sides weed control in potato a). EPTC b). Fluchloralin c). Pendimethalin d). Atrazine
Last Answer : a). EPTC
Description : A herbicide tolerant to lucerne and can be applied mixed with seed is a). EPTC b). Benefix c). Pendimethalin d). None of these
Description : Selective herbicide under cotton + black gram intercropping system a). Diuron b). Oxadiazon c). Fluchloralin d). All
Last Answer : b). Oxadiazon
Description : A broad-spectrum herbicide in groundnut a). Fluchloralin b). Atrazine c). Alachlor d). 2,4-D
Last Answer : a). Fluchloralin
Description : Largest pre-emergence herbicide for weed control in citrus and pineapple orchards a). Atrazine b). Metham c). Allyl d). All
Last Answer : b). Metham
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 : A very potent herbicide for the control of perennial, broad-leaved weed and brushes a). Atrazine b). 2,4-D c). Picloram d). Amitrole
Description : Herbicide residue in soil are undesirable because of a). Injury to sensitive crops b). Accumulate in the produce c). Inhibit soil micro-organisma d). All
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