Crop rotation is being adopted – (1) to increase the productivity of the land (2) to increase the crop yield (3) to increase the soil water (4) to increase the crop resistance to pests.

Crop rotation is being adopted – (1) to increase the productivity of the land (2) to increase the crop yield (3) to increase the soil water (4) to increase the crop resistance to pests.
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(1) to increase the productivity of the land Explanation: Crop rotation is the practice of growing a series of dissimilar types of crops in the same area in sequential seasons for various benefits such as to avoid the buildup of pathogens and pests that often occurs when one species is continuously cropped. Crop rotation also seeks to balance the fertility demands of various crops to avoid excessive depletion of soil nutrients. A traditional element of crop rotation is the replenishment of nitrogen through the use of green manure in sequence with cereals and other crops.
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Rotation of crops means (a) Same crop is grown again and again (b) Two crops are grown simultaneously to increase productivity of the soil (c) Different crops are grown in succession to maintain the soil fertility (d) None of the above

Description : Rotation of crops means (a) Same crop is grown again and again (b) Two crops are grown simultaneously to increase productivity of the soil (c) Different crops are grown in succession to maintain the soil fertility (d) None of the above

Last Answer : Ans: (c)

Rotation of crops means – (1) growing of different crops in succession to maintain soil fertility (2) some crops are grown again and again (3) two or more crops are grown simultaneously to increase productivity (4) None of the above

Description : Rotation of crops means – (1) growing of different crops in succession to maintain soil fertility (2) some crops are grown again and again (3) two or more crops are grown simultaneously to increase productivity (4) None of the above

Last Answer : (1) growing of different crops in succession to maintain soil fertility Explanation: Crop rotation is the practice of growing a series of dissimilar/different types of crops in the same area ... and can also improve soil structure and fertility by alternating deep-rooted and shallow-rooted plants.

Crop rotation helps to – (1) lessen use of pesticides (2) eliminate parasites which have selective hosts (3) yield more crops (4) produce a greater choice of plant products

Description : Crop rotation helps to – (1) lessen use of pesticides (2) eliminate parasites which have selective hosts (3) yield more crops (4) produce a greater choice of plant products

Last Answer : (2) eliminate parasites which have selective hosts Explanation: The growing of different kinds of crops on a piece of land in a preplanned succession is known as crop rotation. In the rotation of ... This is because weeds and pests are very choosy about the host crop plant, which they attack.

Crop plants grown in monoculture are (a) highly prone to pests (b) low in yield (c) free from intraspecific competition (d) characterised by poor root system.

Description : Crop plants grown in monoculture are (a) highly prone to pests (b) low in yield (c) free from intraspecific competition (d) characterised by poor root system.

Last Answer : a) highly prone to pests

Crop rotation refers to : (a) method of farming without irrigation in an area of limited rainfall (b) farming done on the same land by different people turn-wise (c) growing same crop in alternate years (d) growing different crops in succession

Description : Crop rotation refers to : (a) method of farming without irrigation in an area of limited rainfall (b) farming done on the same land by different people turn-wise (c) growing same crop in alternate years (d) growing different crops in succession

Last Answer : Ans: (d)

Some of the characteristics of Bt cotton are (a) long fibre and resistance to aphids (b) medium yield, long fibre and resistance to beetle pests (c) high yield and production of toxic protein crystals which kill dipteran pests (d) high yield and resistance to bollworms.

Description : Some of the characteristics of Bt cotton are (a) long fibre and resistance to aphids (b) medium yield, long fibre and resistance to beetle pests (c) high yield and production of toxic protein crystals which kill dipteran pests (d) high yield and resistance to bollworms.

Last Answer : (d) high yield and resistance to bollworms.

Which one of the following is the correct sequence of crop rotation with a view to increasing soil fertility? (a) Wheat, Potato, Barley, Pea (b) Potato, Wheat, Pea, Barley (c) Barley, Pea, Wheat, Potato (d) Pea, Barley, Wheat, Potato

Description : Which one of the following is the correct sequence of crop rotation with a view to increasing soil fertility? (a) Wheat, Potato, Barley, Pea (b) Potato, Wheat, Pea, Barley (c) Barley, Pea, Wheat, Potato (d) Pea, Barley, Wheat, Potato

Last Answer : Ans: (c)

In which of the following ways can soil be conserved? 1. Contour ploughing 2. Terracing 3. Shifting cultivation 4. Crop rotation (a) I, II and IV (b) II, III and IV (c) II and IV (d) I and III shop.ssbcrack.com

Description : In which of the following ways can soil be conserved? 1. Contour ploughing 2. Terracing 3. Shifting cultivation 4. Crop rotation (a) I, II and IV (b) II, III and IV (c) II and IV (d) I and III shop.ssbcrack.com

Last Answer : Ans: (a)

Soil can best be conserved on the hills by which of the cultivating methods? (a) Strip cropping (b) Crop rotation (c) Contour ploughing (d) Terracing

Description : Soil can best be conserved on the hills by which of the cultivating methods? (a) Strip cropping (b) Crop rotation (c) Contour ploughing (d) Terracing

Last Answer : Ans: (c)

In a desert region, soil erosion can be checked by – (1) Tree plantation/afforestation (2) Crop rotation (3) Contour ploughing (4) Using farm manure

Description : In a desert region, soil erosion can be checked by – (1) Tree plantation/afforestation (2) Crop rotation (3) Contour ploughing (4) Using farm manure

Last Answer : (1) Tree plantation/afforestation Explanation: Soil erosion in a desert region can be checked by tree plantation and afforestation.

In a desert region, soil erosion can be checked by – (1) Contour ploughing (2) Using farm manure (3) Tree plantation/Afforestaion (4) Crop rotation

Description : In a desert region, soil erosion can be checked by – (1) Contour ploughing (2) Using farm manure (3) Tree plantation/Afforestaion (4) Crop rotation

Last Answer : (3) Tree plantation/Afforestaion Explanation: Afforestation holds the key for preventing soil erosion in desert regions and further desertification. Trees or even small plants bind soil to ... introduction of improved dry farming practices and animal husbandry and plantations for fuel and fodder.

Salination of soil is caused by – (1) pesticides (2) soil erosion (3) excess irrigation (4) crop rotation

Description : Salination of soil is caused by – (1) pesticides (2) soil erosion (3) excess irrigation (4) crop rotation

Last Answer : (3) excess irrigation Explanation: Soil salinity is the salt content in the soil: the process of increasing the salt content is known as salinization. Excess irrigation leads to increase in ... is also greatly increased by poor drainage and use of saline water for irrigating agricultural crops.

Which one of the following is an example of carrying out biological control of pests/diseases using microbes? (a) Trichoderma sp. against certain plant pathogens. (b) Nucleopolyhedrovirus against white rust in Brassica. (c) Bt-cotton to increase cotton yield. (d) Lady bird beetle against aphids in mustard.

Description : Which one of the following is an example of carrying out biological control of pests/diseases using microbes? (a) Trichoderma sp. against certain plant pathogens. (b) Nucleopolyhedrovirus against white rust ... c) Bt-cotton to increase cotton yield. (d) Lady bird beetle against aphids in mustard.

Last Answer : (a) Trichoderma sp. against certain plant pathogens.

Which one of the following is an example of carrying out biological control of pests/diseases using microbes ? (1) Lady bird beetle against aphids in mustard (2) Trichoderma sp. against certain plant pathgens (3) Nucleopolyhedrovirus against white rust in Brassica (4) Bt-cotton to increase cotton yield

Description : Which one of the following is an example of carrying out biological control of pests/diseases using microbes ? (1) Lady bird beetle against aphids in mustard (2) Trichoderma sp. against ... pathgens (3) Nucleopolyhedrovirus against white rust in Brassica (4) Bt-cotton to increase cotton yield

Last Answer : (2) Trichoderma sp. against certain plant pathgens

How would you increase the yield of maize crop? (a) Evolve high yielding varieties of seeds to suit different agroclimatic regions (b) Develop high yielding varieties (c) Develop disease-resistant varieties (d) Develop early and very early maturing varieties suitable for rainfall areas

Description : How would you increase the yield of maize crop? (a) Evolve high yielding varieties of seeds to suit different agroclimatic regions (b) Develop high yielding varieties (c) Develop disease-resistant varieties (d) Develop early and very early maturing varieties suitable for rainfall areas

Last Answer : Ans: (a)

Salinization occurs when the irrigation water accumulated in the soil evaporates, leaving behind salts and minerals. What are the effects of salinization on the irrigated land? a. It greatly increases the crop production b. It may lead to crop yield loss c. It raises the water table d. It fills the air spaces in the soil with water

Description : Salinization occurs when the irrigation water accumulated in the soil evaporates, leaving behind salts and minerals. What are the effects of salinization on the irrigated land? a. It greatly increases the crop ... c. It raises the water table d. It fills the air spaces in the soil with water

Last Answer : b. It may lead to crop yield loss

Crop rotation helps to a) lessen use of pesticides b) yield more crops c) produce a greater choice of plant products d) eliminate parasites which have selective hosts

Description : Crop rotation helps to a) lessen use of pesticides b) yield more crops c) produce a greater choice of plant products d) eliminate parasites which have selective hosts

Last Answer : d) eliminate parasites which have selective hosts

Which is not an adverse effect of irrigation? (a) Irrigation changes cropping pattern. (b) Water intensive crops are grown in dry areas. (c) Salinization of soil (d) Increase in crop yield.

Description : Which is not an adverse effect of irrigation? (a) Irrigation changes cropping pattern. (b) Water intensive crops are grown in dry areas. (c) Salinization of soil (d) Increase in crop yield.

Last Answer : (c) Salinization of soil

Salinization occurs when the irrigation water accumulated in the soil evaporates, leaving behind salts and minerals. What are the effects of salinization on the irrigated land? [CSAT 2011] (a) It greatly increases the crop production (b) It makes some soils impermeable (c) It raises the water table (d) It fills the air spaces in the soil with water

Description : Salinization occurs when the irrigation water accumulated in the soil evaporates, leaving behind salts and minerals. What are the effects of salinization on the irrigated land? [CSAT 2011] (a) It greatly increases ... c) It raises the water table (d) It fills the air spaces in the soil with water

Last Answer : Ans: (b)

Which of the following is not a cause of low productivity in In-dian agriculture? (1) Co-operative farming (2) Inadequate inputs availability (3) Sub-division and fragmentation of land holdings (4) Poor finance and marketing facilities.

Description : Which of the following is not a cause of low productivity in In-dian agriculture? (1) Co-operative farming (2) Inadequate inputs availability (3) Sub-division and fragmentation of land holdings (4) Poor finance and marketing facilities.

Last Answer : (1) Co-operative farming Explanation: Productivity is actually a function of efficiency and effectiveness. These two are essential for a productive industry. The agricultural sector in India has ... of population on land is an important demographic factor responsible for low yield in agriculture.

An improved variety of transgenic basmati rice (a) does not require chemical fertilizers and growth hormones (b) gives high yield and is rich in vitamin A (c) is completely resistant to all insect pests and diseases of paddy (d) gives high yield but has no characteristic aroma.

Description : An improved variety of transgenic basmati rice (a) does not require chemical fertilizers and growth hormones (b) gives high yield and is rich in vitamin A (c) is completely resistant to all insect pests and diseases of paddy (d) gives high yield but has no characteristic aroma.

Last Answer : (b) gives high yield and is rich in vitamin A

Which of the following is/are correct about shifting cultivation ? 1. It involves no ploughing 2. It is slash and burn agriculture 3. It involves crop rotation 4. It is combined with transhumance (a) I, II, III and IV (b) II, III and IV (c) II and III (d) I and II

Description : Which of the following is/are correct about shifting cultivation ? 1. It involves no ploughing 2. It is slash and burn agriculture 3. It involves crop rotation 4. It is combined with transhumance (a) I, II, III and IV (b) II, III and IV (c) II and III (d) I and II

Last Answer : Ans: (d)

High yielding plants can be produced by (1) Crop Rotation (2) Hybridisation (3) Inter-cropping (4) Mixed - cropping

Description : High yielding plants can be produced by (1) Crop Rotation (2) Hybridisation (3) Inter-cropping (4) Mixed - cropping

Last Answer : (2) Hybridisation Explanation: Operation Flood in India, a project of the National Dairy Development Board (NDDB) was the world's biggest dairy development programme which made India, a milk-deficient nation, ... world, surpassing the USA in 1998, with about 17 percent of global output in 2010-11.

If it rains only for two months which of the following will yield maximum crop per hectare? (a) Short term crops (b) Long term crops (c) Pulses (d) Millets

Description : If it rains only for two months which of the following will yield maximum crop per hectare? (a) Short term crops (b) Long term crops (c) Pulses (d) Millets

Last Answer : Ans: (d)

Biofortifieation is a - (1) method of breeding crops to increase their nutritional value (2) strategy to combat unwanted nutrients in plants (3) method of developing resis-tance to insect pests (4) method of plant breeding for disease resistance

Description : Biofortifieation is a - (1) method of breeding crops to increase their nutritional value (2) strategy to combat unwanted nutrients in plants (3) method of developing resis-tance to insect pests (4) method of plant breeding for disease resistance

Last Answer : (1) method of breeding crops to increase their nutritional value Explanation: Biofortification is the breeding crops to increase their nutritional value. This can be done either through conventional ... are growing, rather than having nutrients added to the foods when they are being processed.

Biofortification is a (1) method of breeding crops to increase their nutritional value (2) strategy to combat unwanted nutrients in plants (3) method of developing resistance to insect pests (4) method of plant breeding for disease resistance

Description : Biofortification is a (1) method of breeding crops to increase their nutritional value (2) strategy to combat unwanted nutrients in plants (3) method of developing resistance to insect pests (4) method of plant breeding for disease resistance

Last Answer : method of breeding crops to increase their nutritional value

In which type of cropping different crops are planted in proximity for any of a number of different reasons, including pest control, pollination, providing habitat for beneficial creatures, maximizing use of space, and to otherwise increase crop productivity? a. Companion Cropping b. Mixed Croppingc. Overlapped croppingd. Intercropping

Description : In which type of cropping different crops are planted in proximity for any of a number of different reasons, including pest control, pollination, providing habitat for beneficial creatures, ... crop productivity? a. Companion Cropping b. Mixed Cropping c. Overlapped cropping d. Intercropping

Last Answer : a. Companion Cropping

What is the main advantage of transplantation method in rice cultivation? (a) This method ensures maximum utilization of land (b) It is helpful in achieving an economical use of water and a higher yield of grain (c) It helps in early harvesting (d) The draining of water from the field before harvesting is made easy

Description : What is the main advantage of transplantation method in rice cultivation? (a) This method ensures maximum utilization of land (b) It is helpful in achieving an economical use of water and a higher ... helps in early harvesting (d) The draining of water from the field before harvesting is made easy

Last Answer : Ans: (b)

Which one of the following terms describes the practice of growing two or more crops simultaneously on the same piece of land? a. Crop rotation b. Mixed cropping c. Intercropping d. Mixed farming

Description : Which one of the following terms describes the practice of growing two or more crops simultaneously on the same piece of land? a. Crop rotation b. Mixed cropping c. Intercropping d. Mixed farming

Last Answer : b. Mixed cropping

“Relative land area under sole crop required to produce the same yield as obtained under a mixed or intercropping system at the same level of management is termed as

Description : “Relative land area under sole crop required to produce the same yield as obtained under a mixed or intercropping system at the same level of management is termed as

Last Answer : Ans.Land equivalent ratio (LER)

Crops, those are grown to protect the main cash crop from a certain pest or several pests?

Description : Crops, those are grown to protect the main cash crop from a certain pest or several pests?

Last Answer : Ans.Trap Crops

Agronomy is a branch of Agriculture that deals with – a) Breeding of crop plants b) Principles of field management c) Principles and practice of crop production d) Protection of crops from Diseases and Pests

Description : Agronomy is a branch of Agriculture that deals with – a) Breeding of crop plants b) Principles of field management c) Principles and practice of crop production d) Protection of crops from Diseases and Pests

Last Answer : c) Principles and practice of crop production

Which one of the following practices is adopted for restoring the fertility of soil? (1) Weeding (2) Levelling (3) (2) sweet jowar (4) (4) Harrowing

Description : Which one of the following practices is adopted for restoring the fertility of soil? (1) Weeding (2) Levelling (3) (2) sweet jowar (4) (4) Harrowing

Last Answer : (2) sweet jowar Explanation: Fallowing, in agriculture, is the mode of preparing land, by ploughing it a considerable time before it is ploughed for seed. As a result of fallowing, parts ... and thus reciprocally ameliorated; so that they may afford more uniform nourishment to the roots of plants

$ Crop rotation decreasess the soil fertility. ! High concentration of minerals is required as fertilizers.

Description : $ Crop rotation decreasess the soil fertility. ! High concentration of minerals is required as fertilizers.

Last Answer : $ Crop rotation decreasess the soil fertility. ! High concentration of minerals is required as fertilizers. A. ... D. If both As and R are wrong.

The growing of grass or legumes in rotation with grain or tilled crops as a soil conservation measure is termed as? a. Crop rotation b. Ley farming c. Shifting cultivation d. Dairy farming e. Mixed farming

Description : The growing of grass or legumes in rotation with grain or tilled crops as a soil conservation measure is termed as? a. Crop rotation b. Ley farming c. Shifting cultivation d. Dairy farming e. Mixed farming

Last Answer : b. Ley farming

Salination of soil is caused by (1) pesticides (2) soil erosion (3) excess irrigation (4) crop rotation

Description : Salination of soil is caused by (1) pesticides (2) soil erosion (3) excess irrigation (4) crop rotation

Last Answer : excess irrigation

In a desert region, soil erosion can be checked by (1) Contour ploughing (2) Using farm manure (3) Tree plantation/Afforestaion (4) Crop rotation

Description : In a desert region, soil erosion can be checked by (1) Contour ploughing (2) Using farm manure (3) Tree plantation/Afforestaion (4) Crop rotation

Last Answer : Tree plantation/Afforestaion

In a desert region, soil erosion can be checked by (1) Tree plantation/afforestation (2) Crop rotation (3) Contour ploughing (4) Using farm manure

Description : In a desert region, soil erosion can be checked by (1) Tree plantation/afforestation (2) Crop rotation (3) Contour ploughing (4) Using farm manure

Last Answer : Tree plantation/afforestation

Scientists has genetically modified photosynthesis process to increase crop yield by - (1) 11 Percent (2) 12 Percent (3) 15 Percent (4) 17 Percent

Description : Scientists has genetically modified photosynthesis process to increase crop yield by - (1) 11 Percent (2) 12 Percent (3) 15 Percent (4) 17 Percent

Last Answer : (3) 15 Percent Explanation: Photosynthesis, they convert water and carbon dioxide (CO2) to sugar and oxygen with the help of sunlight.

Which aquatic fern is used to increase the yield in paddy crop? (a) Azolla (b) Salvinia (c) Marsilea (d) Isoetes

Description : Which aquatic fern is used to increase the yield in paddy crop? (a) Azolla (b) Salvinia (c) Marsilea (d) Isoetes

Last Answer : (a) Azolla

If speed of rotation of the earth increases, the weight of the body – (1) decreases (2) increases (3) remains the same (4) may increase or decrease

Description : If speed of rotation of the earth increases, the weight of the body – (1) decreases (2) increases (3) remains the same (4) may increase or decrease

Last Answer : (1) decreases Explanation: The weight of a body on the earth is the amount of gravitational pull on it exerted by the earth. Similarly there is another force exerted on a body on earth, that ... under the influence of the centrifugal force and the weight of the body will seem to have decreased.

What is multiple cropping? (a) When seeds are sown on a piece of land and then seedings are transplanted in different fields (b) Dividing a field in two or more parts and then sowing different crops in each part (c) Raising in succession only one type of crop in the same piece of land (d) Raising two or more crops in succession in a year on the same land

Description : What is multiple cropping? (a) When seeds are sown on a piece of land and then seedings are transplanted in different fields (b) Dividing a field in two or more parts and then sowing different crops in ... same piece of land (d) Raising two or more crops in succession in a year on the same land

Last Answer : Ans: (b)

Creating resistance in pests and producing new pests

Description : Creating resistance in pests and producing new pests

Last Answer : Some individuals of the pest species usually survive even after pesticide spray The survivors give rise to highly resistant generations About 20 species of pests are now known which have become immune to all types of pesticides an are known as ―super pests‖

For the cultivation of which crop is black soil moat suitable? (a) Cotton (b) Rice (c) Jute (d) Wheat

Description : For the cultivation of which crop is black soil moat suitable? (a) Cotton (b) Rice (c) Jute (d) Wheat

Last Answer : Ans: (a)

Black soil is mainly related with the crop of – (1) cotton (2) sugarcane (3) tea (4) coffee

Description : Black soil is mainly related with the crop of – (1) cotton (2) sugarcane (3) tea (4) coffee

Last Answer : (1) cotton Explanation: Black soils, locally called regard or black cotton soils, and internationally known as 'tropical black earths' or 'tropical chernozems' have been developed by the weathering ... cracks on drying and self-ploughing and are credited with high fertility of crops like cotton.

Alluvial soils are rich soil for crop cultivation but are poor in– (1) humus (2) nitrogen and humus (3) organic material (4) inorganic material

Description : Alluvial soils are rich soil for crop cultivation but are poor in– (1) humus (2) nitrogen and humus (3) organic material (4) inorganic material

Last Answer : (2) nitrogen and humus Explanation: Alluvial soils are fertile soils composed of sediments deposited by rivers and the waves. However, they are usually deficient in nitrogen and ... With suitable irrigation, fertilizers and proper agricultural practices, alluvial soils are generally very fertile.

Assertion : Use of fertilizers greatly enhaces crop productivity. Reason : Irrigation is very important in increasing crop productivity.

Description : Assertion : Use of fertilizers greatly enhaces crop productivity. Reason : Irrigation is very important in increasing crop productivity.

Last Answer : Assertion : Use of fertilizers greatly enhaces crop productivity. Reason : Irrigation is very important ... D. If both assertion and reason are false

A very efficient converter of solar energy with net productivity of 204 kg/m2 or more is the crop (a) wheat (b) sugarcane (c) rice (d) bajra.

Description : A very efficient converter of solar energy with net productivity of 204 kg/m2 or more is the crop (a) wheat (b) sugarcane (c) rice (d) bajra.

Last Answer : (b) sugarcane

The biomass available for consumption by the herbivores and the decomposers is called (a) net primary productivity (b) secondary productivity (c) standing crop (d) gross primary productivity.

Description : The biomass available for consumption by the herbivores and the decomposers is called (a) net primary productivity (b) secondary productivity (c) standing crop (d) gross primary productivity.

Last Answer : (a) net primary productivity

The mass of living material at a trophic level at a particular time is called (a) net primary productivity (b) standing crop (c) gross primary productivity (d) standing state.

Description : The mass of living material at a trophic level at a particular time is called (a) net primary productivity (b) standing crop (c) gross primary productivity (d) standing state.

Last Answer : (b) standing crop