To reduce the crop-weed com-petition, at what stage are the herbicides used? (a) At germination (b) At tillering (c) At ear emergence

To reduce the crop-weed com-petition, at what stage are the
herbicides used?
(a) At germination
(b) At tillering
(c) At ear emergence
(d) After first irrigation
by

1 Answer

Answer :

(d) After first irrigation
by

Related questions

Among the critical stages, the most critical stage of wheat crop for irrigation is—(A) CRI–Crown Root Initiation stage (B) Tillering stage (C) Jointing stage (D) Flowering stage

Description : Among the critical stages, the most critical stage of wheat crop for irrigation is—(A) CRI–Crown Root Initiation stage (B) Tillering stage (C) Jointing stage (D) Flowering stage

Last Answer : (A) CRI–Crown Root Initiation stage

Herbicide Resistance can be managed through a). Stop to Use of herbicides with the same mechanism of action b). Use proactive weed control c). Use of post emergence herbicides with at least one mechanism of action d). All of the above

Description : Herbicide Resistance can be managed through a). Stop to Use of herbicides with the same mechanism of action b). Use proactive weed control c). Use of post emergence herbicides with at least one mechanism of action d). All of the above

Last Answer : d). All of the above

Which one of the following is used in organic farming to prevent weed Germination & growth? A. Cow pea B. chick pea C. linseed D. Mulching

Description : Which one of the following is used in organic farming to prevent weed Germination & growth? A. Cow pea B. chick pea C. linseed D. Mulching

Last Answer : D. Mulching

Which type of Tillage is done at a depth of 4–5 cm by tractor cultivators, generally done at Pre-emergence stage? [a] Blind Tillage [b] Green Tillage [c] Clean Tillage [d] Mulch Tillage [e] None of the above

Description : Which type of Tillage is done at a depth of 4–5 cm by tractor cultivators, generally done at Pre-emergence stage? [a] Blind Tillage [b] Green Tillage [c] Clean Tillage [d] Mulch Tillage [e] None of the above

Last Answer : [c] Clean Tillage

Herbicides are less use in Horse gram cultivation... a Crop is renumerative b Crop is less renumerative c Sturdy crop d None of these

Description : Herbicides are less use in Horse gram cultivation... a Crop is renumerative b Crop is less renumerative c Sturdy crop d None of these

Last Answer : b Crop is less renumerative

When water is available for three irrigation in wheat , than it should apply to. a. CRT, Late tillering, flowering b. CRI, Boot stage, Milk Stage c. CRT, Boot stage, Dought Stage d. CRT, Milk Stage, Dought Stage

Description : When water is available for three irrigation in wheat , than it should apply to. a. CRT, Late tillering, flowering b. CRI, Boot stage, Milk Stage c. CRT, Boot stage, Dought Stage d. CRT, Milk Stage, Dought Stage

Last Answer : b. CRI, Boot stage, Milk Stage

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

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

What is the function of germ pore? (a) Emergence of radicle (b) Absorption of water for seed germination (c) Initiation of pollen tube (d) Release of male gametes

Description : What is the function of germ pore? (a) Emergence of radicle (b) Absorption of water for seed germination (c) Initiation of pollen tube (d) Release of male gametes

Last Answer : (c) Initiation of pollen tube

3What is the function of germ pore?a)Initiation of pollen tubeb)Release of male gametesc)Emergence of radicled)Absorption of water for seed germination

Description : 3What is the function of germ pore?a)Initiation of pollen tubeb)Release of male gametesc)Emergence of radicled)Absorption of water for seed germination

Last Answer : a)Initiation of pollen tube

Which of the following is an example of a weed of rabi season that infest wheat crop? (a) Chenopodium (b) Motha (c) Jangali jowar (d) None of the above

Description : Which of the following is an example of a weed of rabi season that infest wheat crop? (a) Chenopodium (b) Motha (c) Jangali jowar (d) None of the above

Last Answer : (a) Chenopodium

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

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

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

Last Answer : b). Metham

A weed escape/resist pre-emergence atrazine application in maize under mid hill conditions of Himachal Pradesh a). Ageratum conuzoides b). Commelina banghalensis c). Brachiaria ramosa d). All of the above

Description : A weed escape/resist pre-emergence atrazine application in maize under mid hill conditions of Himachal Pradesh a). Ageratum conuzoides b). Commelina banghalensis c). Brachiaria ramosa d). All of the above

Last Answer : d). All of the above

.____________ is a selective post – emergence herbicide used for weed control in rice a). Bispyribac-sodium b). Butachlor c). Pretilachlor d). Atrazine

Description : .____________ is a selective post – emergence herbicide used for weed control in rice a). Bispyribac-sodium b). Butachlor c). Pretilachlor d). Atrazine

Last Answer : a). Bispyribac-sodium

What is the moisture content of seeds when germination starts ?

Description : What is the moisture content of seeds when germination starts ?

Last Answer : Germination starts when seed moisture is 35-60 %.

Germination is inhibited by— (A) Red light (B) Blue light (C) U.V. light (D) I.R. light

Description : Germination is inhibited by— (A) Red light (B) Blue light (C) U.V. light (D) I.R. light

Last Answer : (C) U.V. light

Seed work board is ‘required for? A. Viability test of seed B. Germination test of seed C. Purity test of seed D. Blending of seed

Description : Seed work board is ‘required for? A. Viability test of seed B. Germination test of seed C. Purity test of seed D. Blending of seed

Last Answer : D. Blending of seed

The optimum cardinal temparature point for germination of rice seeds is– 1) 20°C – 25°C 2) 18°C – 22°C 3) 30°C – 32°C 4) 37°C – 39°C

Description : The optimum cardinal temparature point for germination of rice seeds is– 1) 20°C – 25°C 2) 18°C – 22°C 3) 30°C – 32°C 4) 37°C – 39°C

Last Answer : 1) 20°C – 25°C

The optimum temperature for the germination of soybean is: (a) 11 OC (b) 20 OC(c) 15 OC (d) 22 OC

Description : The optimum temperature for the germination of soybean is: (a) 11 OC (b) 20 OC(c) 15 OC (d) 22 OC

Last Answer : (d) 22 OC

In seed drill, the depth of seed placement for better germination should be: a 3 cm b 5 cm c 7 cm d 10 cm

Description : In seed drill, the depth of seed placement for better germination should be: a 3 cm b 5 cm c 7 cm d 10 cm

Last Answer : b 5 cm

Can yard trimmings treated with pesticides and herbicides like “Weed & Feed” be put in the compost? What happens to them in the compost pile?

Description : Can yard trimmings treated with pesticides and herbicides like “Weed & Feed” be put in the compost? What happens to them in the compost pile?

Last Answer : Most of these chemicals break down fairly well when fully composted (one year). But to be safe, don’t use the finished compost on food crops. The best plan is to avoid using these toxic products in the first place.

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

Description : 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

Last Answer : c). a and b as tank mix

. An approach where bio-herbicides are used to control indigenous weed spe cies a). Inundative approach b). Inoculative approach c). Classical approach d). None of the above

Description : . An approach where bio-herbicides are used to control indigenous weed spe cies a). Inundative approach b). Inoculative approach c). Classical approach d). None of the above

Last Answer : a). Inundative approach

Multiple resistance is the phenomenon in which a weed is resistant to two or more herbicides having a). same mechanisms of action b). different mechanisms of action c). same chemistry d). different chemistry

Description : Multiple resistance is the phenomenon in which a weed is resistant to two or more herbicides having a). same mechanisms of action b). different mechanisms of action c). same chemistry d). different chemistry

Last Answer : b). different mechanisms of action

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 : 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

Last Answer : d). Both a and b

Tillage operation carried out after sowing but before emergence of crop is called as — a. Minimum tillage b. Blind tillage c. Zero tillage d. None of these

Description : Tillage operation carried out after sowing but before emergence of crop is called as — a. Minimum tillage b. Blind tillage c. Zero tillage d. None of these

Last Answer : b. Blind tillage

A herbicide applied to the soil before planting a crop is called a a). pre-emergence b). Post-emergence c). Pre-plant d). None

Description : A herbicide applied to the soil before planting a crop is called a a). pre-emergence b). Post-emergence c). Pre-plant d). None

Last Answer : c). Pre-plant

Which of the herbicides can be used in gram crop? a). Pendimethalin b). Metolachlor c). Fluchloralin d). All

Description : Which of the herbicides can be used in gram crop? a). Pendimethalin b). Metolachlor c). Fluchloralin d). All

Last Answer : d). All

Persistence herbicides pose hazard in soil when a). High persistence herbicides are used b). Crop failure necessitate re-planting c). Susceptible crop follows a short crop d). All

Description : Persistence herbicides pose hazard in soil when a). High persistence herbicides are used b). Crop failure necessitate re-planting c). Susceptible crop follows a short crop d). All

Last Answer : d). All

Main objective of production/use of herbicide resistant GM crops is to (a) encourage eco-friendly herbicides (b) reduce herbicide accumulation in food articles for health safety (c) eliminate weeds from the field without the use of manual labour (d) eliminate weeds from the field without the use of herbicides

Description : Main objective of production/use of herbicide resistant GM crops is to (a) encourage eco-friendly herbicides (b) reduce herbicide accumulation in food articles for health safety (c) eliminate weeds from ... the use of manual labour (d) eliminate weeds from the field without the use of herbicides

Last Answer : (c) eliminate weeds from the field without the use of manual labour

Read the statement given below (i ) Seeds require moisture for germination . (ii) Plant can absorb nutrients in dissolved form. (iii) Irrigation protects crop from both frost and hot air currents . (iv) Irrigation improves soil texture . a) i and ii b) i ,ii, iii c) i , ii , iii , iv . d) i and iii

Description : Read the statement given below (i ) Seeds require moisture for germination . (ii) Plant can absorb nutrients in dissolved form. (iii) Irrigation protects crop from both frost and hot air currents . (iv) Irrigation improves soil texture . a) i and ii b) i ,ii, iii c) i , ii , iii , iv . d) i and iii

Last Answer : a) i and ii

Stage at which seed achieves it maximum dry weight and has maximum germination potential and vigor is: a. Physiological maturity b. Edible maturity c. Harvest maturity d. None of above

Description : Stage at which seed achieves it maximum dry weight and has maximum germination potential and vigor is: a. Physiological maturity b. Edible maturity c. Harvest maturity d. None of above

Last Answer : Physiological maturity

The weed that causes Asthma is— (A) Hirankhuri (B) Bathua (C) Parthenium (D) Krishna Neel

Description : The weed that causes Asthma is— (A) Hirankhuri (B) Bathua (C) Parthenium (D) Krishna Neel

Last Answer : (C) Parthenium

Name the winter annual weed from the following? A. Commelina benghalensis B. Boerhavia erecta C. Chenopodium album D. Aternanthera echinata

Description : Name the winter annual weed from the following? A. Commelina benghalensis B. Boerhavia erecta C. Chenopodium album D. Aternanthera echinata

Last Answer : C. Chenopodium album

Total Stem Parasite Weed of onion is? A. Orabanche cernua B. Striga lutea C. Cuscuta chinensis D. None

Description : Total Stem Parasite Weed of onion is? A. Orabanche cernua B. Striga lutea C. Cuscuta chinensis D. None

Last Answer : C. Cuscuta chinensis

Which of the following family does the weed Grass belongs to? A. Poaceae B. Cyperaceae C. Crotalaria verrucose D. Indigofera viscose

Description : Which of the following family does the weed Grass belongs to? A. Poaceae B. Cyperaceae C. Crotalaria verrucose D. Indigofera viscose

Last Answer : A. Poaceae

Weed problems is more severe in a wet land rice b Deep water rice c Rainfed rice d Semi wet rice.

Description : Weed problems is more severe in a wet land rice b Deep water rice c Rainfed rice d Semi wet rice.

Last Answer : d Semi wet rice.

The most important weed against which eradication measures would be taken on war footings is (a) Eichhornia (b) Dactylis (c) Parthenium (d) Ageratum

Description : The most important weed against which eradication measures would be taken on war footings is (a) Eichhornia (b) Dactylis (c) Parthenium (d) Ageratum

Last Answer : (c) Parthenium

Rotary tillers art used for: a Shallow cultivation and weed control b Deep cultivation and weed control c Both (a) & (b) d None of these

Description : Rotary tillers art used for: a Shallow cultivation and weed control b Deep cultivation and weed control c Both (a) & (b) d None of these

Last Answer : a Shallow cultivation and weed control

The tillage aims to reduce tillage to the minimum necessary for ensuring a good seed-bed, rapid germination, satisfactory stands and favourable growing condition?

Description : The tillage aims to reduce tillage to the minimum necessary for ensuring a good seed-bed, rapid germination, satisfactory stands and favourable growing condition?

Last Answer : Ans.Minimum tillage

Inflorescence in rice is known as A) Ear (B) Raceme (C) Spike (D) Panicle

Description : Inflorescence in rice is known as A) Ear (B) Raceme (C) Spike (D) Panicle

Last Answer : (D) Panicle

The law of tolerance was introduced by (A) Milvert (B) Shelford (C) Hilaire (D) Ear- net Haeckel

Description : The law of tolerance was introduced by (A) Milvert (B) Shelford (C) Hilaire (D) Ear- net Haeckel

Last Answer : (D) Ear- net Haeckel

The main reason of Irish Famine in Potato was—(A) Late Blight disease (B) Bacterial Blight disease (C) Blast disease (D) Ear Cockle disease

Description : The main reason of Irish Famine in Potato was—(A) Late Blight disease (B) Bacterial Blight disease (C) Blast disease (D) Ear Cockle disease

Last Answer : (A) Late Blight disease

Tundu disease (yellow ear rot) of wheat caused by Clavibacter tritici is usually associated with (a) Heterodera evenae (b) Anguina tritici (c) Meloidogyne incognita (d) Pratylenchulus sp

Description : Tundu disease (yellow ear rot) of wheat caused by Clavibacter tritici is usually associated with (a) Heterodera evenae (b) Anguina tritici (c) Meloidogyne incognita (d) Pratylenchulus sp

Last Answer : (b) Anguina tritici

To produce which crop you have to cultivate 16 crops ?

Description : To produce which crop you have to cultivate 16 crops ?

Last Answer : To cultivate radish, 16 cultivars are required.

Which crop can be produced without cultivation ?

Description : Which crop can be produced without cultivation ?

Last Answer : Drink is the crop produced without cultivation.

How long does it usually take for the roots of the crop to rot well in the soil ?

Description : How long does it usually take for the roots of the crop to rot well in the soil ?

Last Answer : It usually takes 10 to 15 days for the roots of the crop to mix well with the decomposed soil .

Which is the rainfed crop of Rabi season in coastal region ?

Description : Which is the rainfed crop of Rabi season in coastal region ?

Last Answer : Mustard is a rainfed crop in Rabi season in coastal areas.

What is one of the means of crop production ?

Description : What is one of the means of crop production ?

Last Answer : Soil is one of the means of crop production.