The practice that directly hit soil weed seed bank in minimizing future weed infestation a). Microwave irradiation b). Soil solarization c). Stale seed bed d). All e). None

The practice that directly hit soil weed seed bank in minimizing future weed infestation a). Microwave irradiation b). Soil solarization c). Stale seed bed d). All e). None
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1 Answer

Answer :

d). All
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Related questions

A practice that does not necessarily involve tillage a). Summer ploughing/hot weather cultivation b). Stale seed bed c). Soil solarization d). None

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Last Answer : c). Soil solarization

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

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

Dab system is successful practical strategy in limiting future weed infestation in a). Xerophytic environments b). Rainfed areas c). Water-logged areas d). Irrigated areas

Description : Dab system is successful practical strategy in limiting future weed infestation in a). Xerophytic environments b). Rainfed areas c). Water-logged areas d). Irrigated areas

Last Answer : d). Irrigated areas

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

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

Stale seed bed technique of weed control is a

Description : Stale seed bed technique of weed control is a

Last Answer : Ans.Cultural method

Cultural practice reducing weed population a). Arresting flowering b). Deep ploughing c). Puddling d). All of these

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Last Answer : d). All of these

The weed producing smallest seed a). Cuscuta sp b). Xanthium sp c). Amaranthus sp d). Commelina sp

Description : The weed producing smallest seed a). Cuscuta sp b). Xanthium sp c). Amaranthus sp d). Commelina sp

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Weed control aims to putting down weed infestation a). Already present b). a + future infestations c). b + introduction from the adjacent fields d). Combining the available techniques in the optimum level

Description : Weed control aims to putting down weed infestation a). Already present b). a + future infestations c). b + introduction from the adjacent fields d). Combining the available techniques in the optimum level

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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 : 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

Most dominant factor influencing weed composition in a field is a). Soil moisture b). Soil type c). Soil texture d). Soil temperature

Description : Most dominant factor influencing weed composition in a field is a). Soil moisture b). Soil type c). Soil texture d). Soil temperature

Last Answer : a). Soil moisture

A dominant weed of puddle paddy soil a). Echinochloa b). Caesulina c). Eclipta sp d). All of these

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Factors affecting weed-crop interference are a). Period of weed growth b). Soil and climate influence c). Plant species effects d). All

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With reference to agriculture, what are “Smother Crops”? a Crops that are grown for grazing of harvesting for immediate or future feeding of livestock. b Crops grown to conserve the soil moisture through their ground covering foliage. c Crops grown to suppress weeds by providing dense foliage and quick growing ability. d Crops cultivated to catch the forthcoming season when main crop fails. e Crops whose culture practices allow the infestation of weeds intensively.

Description : With reference to agriculture, what are Smother Crops ? a Crops that are grown for grazing of harvesting for immediate or future feeding of livestock. b Crops grown to conserve the soil ... season when main crop fails. e Crops whose culture practices allow the infestation of weeds intensively.

Last Answer : e Crops whose culture practices allow the infestation of weeds intensively.

If Echinochloa falls in frequency class ‘E’, the weed community is said to be a). Contiguous b). Heterogenous c). Homogenous d). Random

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

Foundation for phenomenal achievement in modern chemical weed management a). Safeners b). Adjuvants c). Selectivity d). Herbicide combinations e). None

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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

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Last Answer : d). Both a and b

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%

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Last Answer : a). 33.3%

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%

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%

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%

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%

. A ceremonial weed a). Cynodon dactylon b). Datura stramonium c). Tagetus sp d). All of these

Description : . A ceremonial weed a). Cynodon dactylon b). Datura stramonium c). Tagetus sp d). All of these

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A ceremonial weed a). Asparagus racemosus (Shatawari) b). Cynodon dactylon (Dhoob ghaas) c). Nelumbo nucifera (Lotus flower) d). All of these

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A ceremonial weed a). Asparagus racemosus (Shatawari) b). Cynodon dactylon (Dhoob ghaas) c). Both a and b d). Digitaria sanguinalis

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Last Answer : c). Both a and b

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

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

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

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A herbicide requiring good spray coverage of all foliage for effective control of a weed population a).Paraquat b). Glyphosate c). Atrazine d). Isoproturon

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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

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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

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A weed accumulate over 550 ppm of Zn in its dry matter a). Digitaria b). Setaria lutescens c). Portulaca d). Chenopodium

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A natural pre-emergence weed control in turf grass a). Corn gluten meal b). Bialaphos c). Sulcotrione d). Cinmethylin

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

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

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. A non-competitive crop requiring weed free period of three or more months a). Maize b). Rice c). Soybean d). Onion

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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

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The effective solution to manage weed shifts a). Herbicide combinations b). Herbicide rotations c). Crop rotations d). All

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The competitive crop requiring weed free period of about 3-4 weeks a). Soybean b). Carrot c). Garlic d). Onion

Description : The competitive crop requiring weed free period of about 3-4 weeks a). Soybean b). Carrot c). Garlic d). Onion

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A noxious weed of South India a). Cynodon b). Cyperus c). Wild brinjal d). All

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Herbicide which increase tuber size be sides weed control in potato a). EPTC b). Fluchloralin c). Pendimethalin d). Atrazine

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Largest pre-emergence herbicide for weed control in citrus and pineapple orchards a). Atrazine b). Metham c). Allyl d). All

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A very potent herbicide for the control of perennial, broad-leaved weed and brushes a). Atrazine b). 2,4-D c). Picloram d). Amitrole

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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

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Direct contact herbicide application can be achieved by a). Re-circulating sprayer b). Weed wick wiper c). Roller applicator d). All

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. 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

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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

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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

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The weed less responsive to nitrogen a). Cyperus b). Cynodon c). Both a and b d). None of these

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Weed eradication is rare but practiced in a). Lantana b). Saccharum sp c). Striga sp d). All of these

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A simple perennial weed a). Ipomoea carnea b). Lantana camara 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

Last Answer : c). Both a and b

A multi-season annual weed a). Echinochloa colona b). Eclipta alba c). Phyllanthus nirurii d). All of these

Description : A multi-season annual weed a). Echinochloa colona b). Eclipta alba c). Phyllanthus nirurii d). All of these

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Kharif annual weed a). Ammannia bacifera b). Cyperus difformis c). Ludwigia parviflora d). All of these

Description : Kharif annual weed a). Ammannia bacifera b). Cyperus difformis c). Ludwigia parviflora d). All of these

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The weed having more dormancy a). Dactyloctenium sp b). Lathyrus sp c). Field bind weed d). All of these

Description : The weed having more dormancy a). Dactyloctenium sp b). Lathyrus sp c). Field bind weed d). All of these

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