Description : est weight (g) of Phalaris minor is a). 2 b). 10 c). 15 d). 20
Last Answer : a). 2
Description : Test weight of Phalaris minor is a).10 g b).15 g c). 7g d). 2 g
Last Answer : d). 2 g
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 : Percent reduction in grain yield of transplanted rice due to weeds is a). 20-40 b).10-30 c).15-20 d).15-45
Last Answer : d).15-45
Description : Wheat and bajra have critical period of crop-weed competition a).10-20 days b).15-30 days c). 30-45 days d). 20-40 days
Last Answer : c). 30-45 days
Description : A broad-leaf herbicide in wheat a). Carfentrazone – ethyl 20 g/ha b). Metsulfuron – methyl 4 g/ha c). 2,4-D 500 g/ha d). All
Last Answer : d). All
Description : Weed control index if weed dry weight of a treatment is 200 g/m2 and that of weed check was 600 g/m2 a). 33.3% b). 66.7% c). 25% d). None of these
Last Answer : b). 66.7%
Description : What are the units of LD50? a). mg/kg body weight b). g/g body weight c). kg/g of body weight d). mg/g body weight
Last Answer : a). mg/kg body weight
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 : . A basophile weed a). Alkali grass (Puccinallia sp) b). Quack grass c). Amaranth sp d). Both a and b
Last Answer : d). Both a and b
Description : . Mimicry weed in wheat field a). Phalaris minor (Canary grass) b). Wild oat c). Both a and b d). None of these
Last Answer : c). Both a and b
Description : An associated weed in lucerne and potato a). Chicory b). Swine grass (Coronopus didymus) c). Striga d). Both a and b
Description : A diocious weed a). Canada thistle b). Eel grass c). Amaranthus sp d). Both a and b
Description : Weed responsible for dermal allergies on human is a). Carrot grass b). Common rag weed c). Sneeze weed d). All of these
Last Answer : d). All of these
Description : The weed used as a fence a). Bermuda grass b). Quack grass c). Prickly pear d). Digitaria
Last Answer : c). Prickly pear
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 is the ‘odd one’ based on mimicry a). Wild rice in rice b). Wild sorghum in sorghum c). Wild sugarcane in sugarcane d). Itch grass in upland rice
Last Answer : d). Itch grass in upland rice
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 : 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
Description : A weed producing > 1 lakh seeds/plant a). Amaranthus sp b). Portulaca sp c). Both a and b d). Cascutta sp
Description : Generally weeds seeds are abundant at a depth of a). 1.0-1.5cm b). 5 cm c).10cm d).15cm
Last Answer : a). 1.0-1.5cm
Description : Surface germinating weed seeds are at depth a). 1cm b). 2.5cm c). 7.5cm d).15cm
Last Answer : a). 1cm
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 : 2,4-d to wheat is effective when it is ap plied at a). 15 DAS b). 20-25 DAS c). 25-30 DAS d). 45 DAS
Last Answer : c). 25-30 DAS
Description : How many years a patent take for fi nite lifespan a). 20 b). 15 c). 12 d). 17
Last Answer : a). 20
Description : Percent reduction in yield in case of onion due to weeds is a). 20-30 b). 30-35 c). 60-70 d).15-20
Last Answer : c). 60-70
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 : Under no circumstances compute the number of your barnyard fowl previous to their incubation. What is the proverb? -Riddles
Last Answer : Do not count your chickens before they hatch.
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 : Critical period of crop weed competition in sugarcane is a). 30-40 days b). 30-120 days c). 10-40 days d). 15-30 days
Last Answer : b). 30-120 days
Description : Sugarcane takes about how much time to complete its germination phase a).10 days b).15 days c). One month d). 60 days
Last Answer : c). One month
Description : MCPA was developed during 1945 in Eng land by a). W.G. Templeman b). W.A. Sexton c). Both of them d). None of these
Last Answer : c). Both of them
Description : A post-emergence herbicide in Soy bean a). Pendimethalin 1.2 kg/ha b). Quazalofop – ethyl 60 g/ha c). Fluchloralin 0.9 kg/ha d). Thiobencarb 1.50 kg/ha
Last Answer : b). Quazalofop – ethyl 60 g/ha
Description : Herbicidal control for isoproturon resis tance Phalaris minor in wheat a). Sulfosulfuron 25 g/ha b). Clodinafop-propargyl 60 g/ha c). Penoxaden 50 g/ha d). All
Description : Amount of Topic 10% for 4000 m2 if rate of clodinafop is 60 g/ha. a). 600 g b). 480 g c). 300 g d). 240 g
Last Answer : d). 240 g
Description : To prepare soils for the bioassay, her bicides get inactivated by a). Darco G-60 b). Activated charcoal c). a & b d). None
Last Answer : c). a & b
Description : Isoproturon to wheat is effective at a). 15 DAS b). 25-30 DAS c). 45- DAS d). 5 DAS
Last Answer : b). 25-30 DAS
Description : Butachlor has to be applied to control weeds in upland rice at a). Immediately after sowing b). 2 DAS c). 6-8 DAS d). 15 DAS
Last Answer : d). 15 DAS
Description : If relative frequency, abundance and density values are 6, 5 and 4, respec tively, then summed dominance ratio is a). 15 b). 5 c). 7.5 d). 3
Last Answer : b). 5
Description : What do you like on your bagel? (9-20-08, 10:37 pm EST)
Last Answer : answer:Rye or potato bagel, toasted, with a small amount of regular cream cheese. Lox and capers sometimes. Los Angeles, CA
Description : The weight of a pycnometer containing 400 g sand and water full to the top is 2150 g. The weight of pycnometer full of clean water is 1950 g. If specific gravity of the soil is 2.5, the water content is (A) 5 % (B) 10 % (C) 15 % (D) 20 %
Last Answer : (D) 20 %
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 : . Amount of 2,4-D amine salt at 10 ppm for a pond measuring 40mx20mx5m a). 0.4 kg b). 400 kg c). 40 kg d). 4 kg
Last Answer : c). 40 kg
Description : Intermediate rate of benchmark dose a).1/10 b).1/8 c).1/5 d).1/7
Last Answer : a).1/10
Description : How many modes of action commer cialized between 1970 and 1985 a).6 b).9 c).10 d).12
Last Answer : d).12
Description : Noncompetitive crops such as onion or garlic require a weed-free period of a). 3 months or more b). One month c).10 days d). None of the above
Last Answer : a). 3 months or more
Description : For determining the moisture content of a soil sample, the following data is available Weight of container = 260 g, Weight of soil sample and = 320 g container, Weight of soil sample (dried) and = 310 g container. The moisture content of the soil sample, is (A) 15 % (B) 18 % (C) 20 % (D) 25 %
Last Answer : (C) 20 %
Description : In a 100 quadrat study of 1 sqm each Cyperus rotundus was found in 80 quadrats with overall of 5640 individuals. The frequency (%), abun dance and density (m2) would be a). 70.5, 80.0 and 56.4 b). 56.4, 70.5 and 80.0 c). 80.0, 70.5 and 56.4 d). 80.0, 56.4 and 70.5
Last Answer : c). 80.0, 70.5 and 56.4
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