Description : The weed producing smallest seed a). Cuscuta sp b). Xanthium sp c). Amaranthus sp d). Commelina sp
Last Answer : a). Cuscuta sp
Description : In which weed seeds mature after uproot ing the plant? a). Stellaria media (Chick weed) b). Portulaca oleracea c). Both a and b d). None of these
Last Answer : c). Both a and b
Description : A diocious weed a). Canada thistle b). Eel grass c). Amaranthus sp d). Both a and b
Last Answer : d). Both a and b
Description : . October sowing of berseem/lucerne pro motes the growth of a). Amaranthus sp b). Trianthema sp c). Both a and b d). None of these
Description : . Digging reduces population of a). Cynodon sp b). Amaranthus sp c). Convolvulus sp d). None of these
Last Answer : a). Cynodon sp
Description : Established at Hisar in 1968, who was the founder President/Secretary of ISWS a). Amaranthus sp b). Chenopodium c). Circium sp d). All of these
Last Answer : d). All of these
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 : 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
Description : Which of the weed act as alternate host on gram caterpillar of redgram? a). Amaranthus b). Datura c). Both a and b d). None of these
Description : Weed responsible for forest fire is a). Aligator weed b). Sorghum halepense c). Lantana d). Amaranthus
Last Answer : c). Lantana
Description : Which of the weed accumulates more phosphrous content of over 3%. a). Digitaria b). Amaranthus c). Chenopodium d). Portuluca
Last Answer : a). Digitaria
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 : 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 : Which weed induces asthama in humans due to pollen spread? a). Ambrosia artemissifolia b). Franseria sp c). Both a and b d). None of these
Description : . A ceremonial weed a). Cynodon dactylon b). Datura stramonium c). Tagetus sp d). All of these
Description : Weed eradication is rare but practiced in a). Lantana b). Saccharum sp c). Striga sp 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 : . Submerged weed a). Hydrilla verticillata b). Nagar sp c). Utricularia stellaris d). All of these
Description : A biennial weed a). Alternanthera sp b). Cichorium intybus c). Circium vulgare d). All of these
Description : November sown berseem crop induces the weed a). Chenopodium sp b). Anagallis sp c). Vicia sp d). All of these
Description : A dominant weed of puddle paddy soil a). Echinochloa b). Caesulina c). Eclipta sp d). All of these
Description : . A weed selective under irrigated conditions a). Commelina benghalensis b). Trianthema sp c). Brachiaria ramosa d). All of these
Description : . A weed acting as a satellite weed a). Avena fatua b). Cuscuta sp c). Cichorium sp d). All of these
Description : Weed species which has nematicidal prop erty a). Crotolaria b). Parthenium c). Eichhornia sp d). All of these
Description : A troublesome weed of water body a). Water lilly b). Lotus (Nelumbo sp) c). Water hyacinth d). All the above
Last Answer : d). All the above
Description : Having higher phosphorus conten a). Amaranthus b). Setaria c). Chenopodium d). Digitaria
Last Answer : d). Digitaria
Description : A potassium lover a). Chenopodium b). Digitaria c). Amaranthus d). Setaria
Last Answer : a). Chenopodium
Description : A nitrophyll a). Amaranthus b). Setaria lutescens c). Digitaria d). Chenopodium
Last Answer : a). Amaranthus
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 : Surface germinating weed seeds are at depth a). 1cm b). 2.5cm c). 7.5cm d).15cm
Last Answer : a). 1cm
Description : Shallow germinating weed seeds are at depth a). Upto 5cm b).10 cm c).15cm d).7.5cm
Last Answer : a). Upto 5cm
Description : Deep germinating weed seeds are at depth of a). Upto 5cm b). 2.5 cm c). 15cm d). 1cm
Last Answer : c). 15cm
Description : To devitalize weed seeds in manure, the composting temperature must be in which of the following range a). 35-50 °C b). 50-65 °C c). 65-90 °C d). 90-105 °C
Last Answer : c). 65-90 °C
Description : Trap crop for Cuscuta sp a). Small grains b). Chickpea c). Mustard d). All
Last Answer : d). All
Description : Insect to control Lantana a). Ophimoyia sp (seed fly) b). Teleonania sp (Lace bug) c). Theola sp (Butterfly) d). All of these
Description : A parasite in lucerne a). Cuscuta sp b). Orobanche sp c). Striga sp d). All of these
Description : Besides isoproturon resistance in P. minor, other cases of herbicide resis tance reported in India are a). Poa annua b). Brachiaria ramosa c). Commelina sp d). None of the above
Last Answer : d). None of the above
Description : Weed killer to use in portulaca beds?
Last Answer : can you move creeping jenny to a rock garden area............
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 : 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
Description : Weed Biology and Management Q.313. Weed Science of America is publish ing which of the Journals a). Weed Science b). Weed Technology c). Invasive Plant Science and Manage ment d). All the above
Description : Factors affecting weed-crop interference are a). Period of weed growth b). Soil and climate influence c). Plant species effects d). All
Description : A ceremonial weed a). Asparagus racemosus (Shatawari) b). Cynodon dactylon (Dhoob ghaas) c). Both a and b d). Digitaria sanguinalis
Description : The weed less responsive to nitrogen a). Cyperus b). Cynodon c). Both a and b d). None of these
Description : A simple perennial weed a). Ipomoea carnea b). Lantana camara c). Both a and b d). None of these
Description : . Common weed in pasture land a). Tephrosia procumbens b). Boerhaavia diffusa c). Both a and b d). None of these
Description : . Mimicry weed in wheat field a). Phalaris minor (Canary grass) b). Wild oat c). Both a and b d). None of these
Description : An associated weed in lucerne and potato a). Chicory b). Swine grass (Coronopus didymus) c). Striga d). Both a and b
Description : A weed brought as ornamental a). Water hyacinth b). Lantana c). Both a and b d). None of these