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
Last Answer : d). All of these
Description : A practice that does not necessarily involve tillage a). Summer ploughing/hot weather cultivation b). Stale seed bed c). Soil solarization d). None
Last Answer : c). Soil solarization
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 : Weed intensity if number of weeds is 110/m2 and wheat plants are 90/m2. a). 55% b). 110% c). 22.5% d). 77.5%
Last Answer : a). 55%
Description : Herbicides are less effective on weeds under which of the soil condition a). Field capacity b). Saturated c). Both a and b d). Dry
Last Answer : d). Dry
Description : The weather condition is optimum for herbicidal weed control? a). High temperature low humidity b). High temperature high humidity c). warm temperature high humidity d). cold temperature low humidity
Last Answer : c). warm temperature high humidity
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 : 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 : 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 : 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
Last Answer : d). Both a and b
Description : When the weeds are under pressure, the herbicides enter the leaf a). less readily b). more readily c). do not enter d). entry not affected
Last Answer : a). less readily
Description : Which of the following pre-emergence her bicides can be applied with herbicides that have efficacy with emerged weeds a). Chloracitamide b). Thiocarbamates c). Dinitroanilines d). All
Last Answer : d). All
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 : Which of the weeds are rapidly controlled by MCPA than 2,4-D a). Nutsedge b). Canada thistle c). Both d). None
Last Answer : c). Both
Description : 4. Reverse metabolism induce the suscepti bility to weeds by a). 2,4-D b). MCPA c). Both a and b d). None of these
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 : 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 : Blind hoeing with bullock/tractor drawn spike-tooth harrow successfully controls weeds in a). Potato b). Sugarcane c). Maize d). Both a and b
Description : Industrial weeds can be controlled by using a). Non selective herbicides b). Selective herbicides c). Soil sterilants d). Both a and c
Last Answer : d). Both a and c
Description : In paddy field which of the following con trols weeds effectively? a). Puddling b). Transplanting c). Manuring d). Both a and b
Description : Which of the weeds make harvesting diffi cult a). Canada thistle b). Cocklebur c). Wild safflower d). All of these
Description : he earliest attempt to control weeds by herbicides was made in 1937 in Pun jab to control Carthamus oxyacantha by using a). Sulfosulfuron b). Atrazine c). Sodium arsenate d). 2,4-D
Last Answer : c). Sodium arsenate
Description : A herbicide for controlling weeds in grassland and pastures a). 2,4-D b). Carfentrazone c). Metsulfuron-methyl d). All
Description : Herbicide Antidotes a). protect crop plants b). harm crop plants c). Protect weeds d). Harm weeds
Last Answer : a). protect crop plants
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 : One to two flushes of weeds are destroyed before planting of crop is called a). Stale seed bed b). Blind hoeing c). Weeding d). Summer ploughing
Last Answer : a). Stale seed bed
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 : 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 : Striga densiflora and Orobanche aegyptica are the weeds of a). Rice and Wheat b). Sugarcane and Mustard c). Wheat and Sugarcane d). Oats and Rice
Last Answer : b). Sugarcane and Mustard
Description : A practice where one or two flushes of weeds are destroyed before seeding a crop a). Cheeling b). Stale seed bed c). Searing d). None
Last Answer : b). Stale seed bed
Description : Integrated weed management practices that a). Enhance crop competitive ability b). Decrease weeds ability to reduce yield c). Practices that eliminate weeds from an area d). Both a and b e). Both a and c
Description : The tillage that is done immediately after crop harvesting to remove the weeds and to restore soil structure is? A. strip B. sub-soil C. fallow D. stubble
Last Answer : D. stubble
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 : 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 : Harrow is a tillage implement that cuts the soil to shallow depth for smoothening and pulverizing the soil as well as to cut weeds and to mix the materials with the soil. a. Primary. c. Tertiary b. Secondary. d. None
Last Answer : Secondary
Description : Objectives of Tillage a. To destroy the prevent weeds. c) both A & B b. To reduce soil and erosion d) increase the output of work per unit time
Last Answer : both A & B
Description : Post-plant tillage helps in a). Mixing of manures b). Control of weeds c). Soil and water conservation d). None e). All
Last Answer : e). All
Description : For Ordinary Portland cement concrete exposed to dry and hot weather conditions, good moist curing period is [ A ] 7 days [ B ] 10 days [ C ] 14 days [ D ] None of the above
Last Answer : [ B ] 10 days
Description : Herbicide application is mainly influenced by a). Application rate, timing and methods b). Application rate, weather conditions and soil types c). weather conditions, soil types and water chemistry d). All
Last Answer : a). Application rate, timing and methods
Description : The most important element of weather affecting agriculture in India is: (1) Temperature (2) Humidity (3) Wind (4) Rainfall
Last Answer : (4) Rainfall Explanation: Though temperature and humidity are one of the key elements of weather crucial for a good harvest, agriculture in India is said to be the handmaid of monsoon. This ... lack of irrigational facilities across the country. A good monsoonal year often means a bumper harvest.
Description : $ Those parts of the plants which help in vegetative reproduction are called propagules. ! Vegetative propagation is a type of Asexual reproduction
Last Answer : $ Those parts of the plants which help in vegetative reproduction are called propagules. ! Vegetative propagation ... D. If both As and R are wrong.
Description : Environmental factors which increases the allelopathic effects are a).low soil fertility b). Warm wet condition c). Cold wet conditions d). a and b
Last Answer : d). a and b
Description : Herbicides are more tightly bound to soils under which of the condition a). Field capacity b). Saturated c). Both a and b d). Dry
Description : Volatilisation losses are more in which of the following condition a). Cold b). Warm c). Humid d). Dry
Last Answer : b). Warm
Description : How do the Central Asian highlands affect the Indian climate? (a) The low pressure in these areas intensifies the cold during the winter (b) The atmospheric pressure in this region has an effect on ... (d) The atmospheric pressure in this region has an impact on the onset of monsoon in India
Last Answer : Ans: (d)
Description : In connection with corrosion of metals, passivation is the process that (A) Intensifies deterioration (B) Changes the composition of the metal (C) Inhibits further deterioration (D) None of these
Last Answer : (C) Inhibits further deterioration
Description : Depolarizing neuromuscular blockers differ from competitive blockers in the following attributes except: A. They induce contraction of isolated frog rectus abdominis muscle B. Ether anaesthesia ... produces well sustained contraction D. Neostigmine does not reverse block produced by them
Last Answer : B. Ether anaesthesia intensifies block produced by them
Description : The good physical condition of soil after tillage is
Last Answer : Ans.Tilth
Description : Secondary tillage consists of conditioning the to meet the different tillage objectives of the farm A) Weather. C) Atmosphere B) Soil. D)All of the above
Last Answer : Soil
Description : A channel which is designed to irrigate all the year round is called a. All weather channel b. Green channel c. Permanent channel d. Perennial channel
Last Answer : d. Perennial channel