______ are organism which attack and destroy the crops. a) weed b)pest c)logging d)chaff

______ are organism which attack and destroy the crops.
a) weed b)pest c)logging d)chaff
by

1 Answer

Answer :

b)pest
by

Related questions

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The falling down of crop due to untimely rain and strong winds is known as _______. a) sowing b)lodging c)weeding d)logging

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134 Given below are the statements about the harmful effects of weeds on crop plants. i. They interfere in harvesting ii. They help crops to grow healthy. iii. They compete with crop plants for water, nutrients , space and light . iv. They affect plant growth . Choose the correct combination of statements a) i, iii, iv b)iii only c) iii , iv d) i, ii , iii, iv

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Does running spandex chaff the skin?

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The average working speed of a hand operated chaff fitted with two knives is _________ rev/min.

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Last Answer : 35

.The number of knives on powered chaff cutter a) 2-6 b) 1-2 c) 5-10 d) 10-20

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Adjustment needed when thresher blows grains with chaff a.) Decreasing cylinder peripheral speed. b.) Increasing cylinder speed. c.) Decreasing feed rate. d.) Increasing cylinder

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Thresher blows broken grains with chaff due to a) Higher cylinder speed. b) More feed Rate c) More cylinder concave clearance d) Moisture content of the crop is more

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Differential lock offers advantage of E. Threshing efficiency of thresher (power operated) F. Capacity of chaff cutters G. Cleaning capacity of straw walkers H. None of the above

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Speed of power operated machine chaff cutter is E. 35 rpm F. 50 rpm G. 600-1000 rpm H. None of the above

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Speed of band operated machines chaff cutter having two knives F. 35 rpm G. 50 rpm H. 600 rpm I. 1000 rpm

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Last Answer : F. 35 rpm

Capacity of field choppers (chaff cutter) is affected by.... (a) Capacity of the feed mechanism (cross-sectional area) (b) Rate of advance of material through throat considered as to be same linear speed of feed mechanism (c) Density of forage material (d) All of the above

Description : Capacity of field choppers (chaff cutter) is affected by.... (a) Capacity of the feed mechanism (cross-sectional area) (b) Rate of advance of material through throat considered as to be same linear speed of feed mechanism (c) Density of forage material (d) All of the above

Last Answer : (d) All of the above

Capacity of field choppers (chaff cutter) is affected by (a)capacity of the feed mechanism (cross sectional area) (b)Rate of advance of material through throat considered as to be the same linear speed of feed mechanism (c) density of forage material (d) all of the above

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Last Answer : (d) all of the above

Competitive crops such as corn or soybean require weed-free period of a). 2 months b). 3-4 weeks c). 3 months d). None of the above

Description : Competitive crops such as corn or soybean require weed-free period of a). 2 months b). 3-4 weeks c). 3 months d). None of the above

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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

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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 : 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

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Three crops that contribute maximum to global food grain production are ______. (1) wheat, rice, barley (2) rice, maize, sorghum (3) wheat, maize, sorghum. (4) wheat, rice, maize

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Spraying of DDT on crops causes pollution of ______. (1) Air & Soil (2) Crops & Air (3) Soil & Water (4) Air & Water

Description : Spraying of DDT on crops causes pollution of ______. (1) Air & Soil (2) Crops & Air (3) Soil & Water (4) Air & Water

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______ is the practice of growing crops and raising livestock sufficient only for one’s own use, without any surplus for trade a. Private Farmingb. Extensive Farmingc. Subsistence Farmingd. Meagre Farming

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Oxygen is utilised by the organism to (a)_____ breakdown nutrietns molecules the (b)_____ and to derive (c)______ for performing various activities

Description : Oxygen is utilised by the organism to (a)_____ breakdown nutrietns molecules the (b)_____ and to derive (c)______ for performing various activities

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Oxygen is utilised by the organism to (a)_____ breakdown nutrietns molecules the (b)_____ and to derive (c)______ for performing various activities

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