Description : Weed eradication is rare but practiced in a). Lantana b). Saccharum sp c). Striga sp d). All of these
Last Answer : d). All of these
Description : A simple perennial weed a). Ipomoea carnea b). Lantana camara c). Both a and b d). None of these
Last Answer : c). Both a and b
Description : A recent noxious weed of Tamil Nadu a). Wild brinjal b). Striga c). Lantana d). Cuscutta
Last Answer : a). Wild brinjal
Description : A weed brought as ornamental a). Water hyacinth b). Lantana c). Both a and b d). None of these
Description : Which of the following weed is used in cot tage industry for making rope and thatch material? a). Typha b). Saccharum sp c). Both a and b d). Lantana
Description : Each year an awareness week is or ganized by DWR Jabalpur, an ICAR In stitute in reference to which of the weed a). Lantana camara b). Chromolaena adenophorum c). Parthenium hysterophorus d). Imperata cylindrica
Last Answer : c). Parthenium hysterophorus
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 : Weed responsible for forest fire is a). Aligator weed b). Sorghum halepense c). Lantana d). Amaranthus
Last Answer : c). Lantana
Description : Insect to control Lantana a). Ophimoyia sp (seed fly) b). Teleonania sp (Lace bug) c). Theola sp (Butterfly) d). All of these
Description : he bird which disperses Lantana camara a). Indian Myha b). Chinese turtle dove c). Parrot d). Both a and b
Last Answer : d). Both a and b
Description : Three-phased integrated technology including cutting, spray of glyphosate and land utilization as per its capability for the management of Lantana camara was developed at a). Jabalpur, MP b). Palampur, HP c). Jaipur, Rajesthan d). Hisar, Haryana
Last Answer : b). Palampur, HP
Description : Herbicidal control for Lantana a). Glyphosate b). Atrazine c). Pendimethalin d). Alachlor
Last Answer : a). Glyphosate
Description : If Echinochloa falls in frequency class āEā, the weed community is said to be a). Contiguous b). Heterogenous c). Homogenous d). Random
Last Answer : c). Homogenous
Description : If weed population is 70/m2 and the crop 140/ m2, weed intensity would be a). 33.3% b). 66.6% c). 50% d). 73.4%
Last Answer : a). 33.3%
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 : If the yield from weed free is 3500 kg and that from weedy 1500 kg/ha, weed index would be a). 57.1% b). 133.3% c). 45.0% d). 25.6%
Last Answer : a). 57.1%
Description : . A ceremonial weed a). Cynodon dactylon b). Datura stramonium c). Tagetus sp d). All of these
Description : A ceremonial weed a). Asparagus racemosus (Shatawari) b). Cynodon dactylon (Dhoob ghaas) c). Nelumbo nucifera (Lotus flower) d). All of these
Description : A ceremonial weed a). Asparagus racemosus (Shatawari) b). Cynodon dactylon (Dhoob ghaas) c). Both a and b d). Digitaria sanguinalis
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 : 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 : 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 : A curvilinear relationship between weed density and crop yield was reported by a). Zimdahl 1980 b). Roberts and Bonds (1975) c). Cousens et al (1985) d). None of these
Last Answer : b). Roberts and Bonds (1975)
Description : The sigmoidal relationship between weed density and crop yield was proposed by a).Zimdahl 1980 b). Roberts and Bonds (1975) c). Cousens et al (1985) d). None of these
Last Answer : a).Zimdahl 1980
Description : A weed accumulate over 550 ppm of Zn in its dry matter a). Digitaria b). Setaria lutescens c). Portulaca d). Chenopodium
Last Answer : b). Setaria lutescens
Description : A natural pre-emergence weed control in turf grass a). Corn gluten meal b). Bialaphos c). Sulcotrione d). Cinmethylin
Last Answer : a). Corn gluten meal
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 : . 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 : 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 : The effective solution to manage weed shifts a). Herbicide combinations b). Herbicide rotations c). Crop rotations d). All
Last Answer : d). All
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 : A noxious weed of South India a). Cynodon b). Cyperus c). Wild brinjal d). All
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 : 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 : 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 : Effective rate (kg/ha) of 2,4-D for weed control a). 0.2-0.5 b). 0.5-1.0 c). 2 d). 5
Last Answer : b). 0.5-1.0
Description : Direct contact herbicide application can be achieved by a). Re-circulating sprayer b). Weed wick wiper c). Roller applicator d). All
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 : Important quality of bioagents a). Attack only host plant b). Free from predators/parasites and quick adoption to new environment c). Able to kill reproductive parts of weed 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 : 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 preventive method of weed control a). Using weed free seeds b). Using clean machineries c). Following quarantine measures d). All of these
Description : The weed less responsive to nitrogen a). Cyperus b). Cynodon c). Both a and b d). None of these
Description : Cultural practice reducing weed population a). Arresting flowering b). Deep ploughing c). Puddling d). All of these
Description : A multi-season annual weed a). Echinochloa colona b). Eclipta alba c). Phyllanthus nirurii d). All of these
Description : Kharif annual weed a). Ammannia bacifera b). Cyperus difformis c). Ludwigia parviflora d). All of these
Description : The weed having more dormancy a). Dactyloctenium sp b). Lathyrus sp c). Field bind weed d). All 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