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

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

1 Answer

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 soli salinity since water is absorbed by plants and salts are left behind in the soil and eventually begin to accumulate. Salination from irrigation water is also greatly increased by poor drainage and use of saline water for irrigating agricultural crops.
by
selected by

Related questions

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

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.

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.

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)

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 of the following is/are methods of checking soil erosion? 1. Strip cropping 2. Contour ploughing 3. Use of irrigation and fertilisers 4. Terrace farming (a) 1 and 2 (b) 3 and 4 (c) 2, 3 and 4 (d) 1, 2, 3 and 4

Description : Which of the following is/are methods of checking soil erosion? 1. Strip cropping 2. Contour ploughing 3. Use of irrigation and fertilisers 4. Terrace farming (a) 1 and 2 (b) 3 and 4 (c) 2, 3 and 4 (d) 1, 2, 3 and 4

Last Answer : Ans: (d)

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

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)

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)

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)

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.

Description : 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.

Last Answer : (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 ... the replenishment of nitrogen through the use of green manure in sequence with cereals and other crops.

Which of the following indicates the types of soil erosion in decreasing order of damage caused In India (a) Ravine erosion .and gullies, alkalinity and salinity weeds and water-logging (b) Alkalinity and water-logging, ravine erosion and weeds (c) Water-logging, weeds, salinity and ravine erosion (d) All are equally damaging

Description : Which of the following indicates the types of soil erosion in decreasing order of damage caused In India (a) Ravine erosion .and gullies, alkalinity and salinity weeds and water-logging (b) Alkalinity ... and weeds (c) Water-logging, weeds, salinity and ravine erosion (d) All are equally damaging

Last Answer : Ans: (a)

What is common to all of them? Select the most appropriate name. A. Soil erosion controlling methods. B. Traditional water harvesting methods. C. Modern methods of irrigation. D. All of them.

Description : What is common to all of them? Select the most appropriate name. A. Soil erosion controlling methods. B. Traditional water harvesting methods. C. Modern methods of irrigation. D. All of them.

Last Answer : B. Traditional water harvesting methods.

The following are the advantages of the modern methods of irrigation a. Large quantity of water is properly utilized b. No Soil erosion. c. Can be used in arid and semi-arid regions. d. All of the above

Description : The following are the advantages of the modern methods of irrigation a. Large quantity of water is properly utilized b. No Soil erosion. c. Can be used in arid and semi-arid regions. d. All of the above

Last Answer : d. All of the above

Which of the following is not an advantage of weeds? a. A Controls Soil Erosion b. B Expedites water flow in irrigation canals c. C Maintain Soil Fertility d. D Used as fodder

Description : Which of the following is not an advantage of weeds? a. A Controls Soil Erosion b. B Expedites water flow in irrigation canals c. C Maintain Soil Fertility d. D Used as fodder

Last Answer : b. B Expedites water flow in irrigation canals

The package technology which brought about Green Revolution comprised manily of (1) man-power, mechanical cultivators and electricity (2) changes in crop pattern, industrialization and chemical fertilizers (3) irrigations, bio-chemical fertilizers and highyield varieties of seeds (4) electricity, irrigation and introduction of dry farming

Description : The package technology which brought about Green Revolution comprised manily of (1) man-power, mechanical cultivators and electricity (2) changes in crop pattern, industrialization and chemical ... and highyield varieties of seeds (4) electricity, irrigation and introduction of dry farming

Last Answer : (3) irrigations, biochemical fertilizers and high-yield varieties of seeds Explanation: Using seeds with superior genetics was the scientific aspect of the Green Revolution. The Green ... water supply and improved moisture utilization, fertilizers, and pesticides, and associated management skills.

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.

Hydraulic Action is a type of erosion caused by – (1) Running water (2) Wind (3) Glacier (4) None of these

Description : Hydraulic Action is a type of erosion caused by – (1) Running water (2) Wind (3) Glacier (4) None of these

Last Answer : (1) Running water Explanation: Hydraulic action is one of the main forms of river erosion (example, of erosion due to running water) in which the force of the river against the banks can cause air to be trapped in cracks and crevices. The pressure weakens the banks and gradually wears it away.

Man can maintain an ecological balance in the biosphere by- (1) deforestation (2) developing new breeds of cultivated plants and domesticated animals (3) using insecticides and pesticides (4) understanding the delicate balance in the relative number of organisms

Description : Man can maintain an ecological balance in the biosphere by- (1) deforestation (2) developing new breeds of cultivated plants and domesticated animals (3) using insecticides and pesticides (4) understanding the delicate balance in the relative number of organisms

Last Answer : (4) understanding the delicate balance in the relative number of organisms Explanation: Ecological balance is a state of dynamic equilibrium within a community of organisms in which genetic ... this balance, the delicate balance between the organisms constituting and ecosystem should be understood.

The deflection of the winds to the right in the northern hemisphere is caused by : (1) revolution of the earth (2) rotation of the earth (3) uneven heating of the earth (4) All the above

Description : The deflection of the winds to the right in the northern hemisphere is caused by : (1) revolution of the earth (2) rotation of the earth (3) uneven heating of the earth (4) All the above

Last Answer : (2) rotation of the earth Explanation: If the Earth didn't rotate, winds would travel either north or south due to differences in temperature and pressure at different latitudes. But since the Earth does ... of time, such as large-scale movement of air in the atmosphere or water in the ocean.

Earthquakes are caused by – (1) Denudation (2) Tectonism (3) Earth revolution (4) Earth rotation

Description : Earthquakes are caused by – (1) Denudation (2) Tectonism (3) Earth revolution (4) Earth rotation

Last Answer : (2) Tectonism Explanation: Earthquakes result from the sudden release of energy in the Earth's crust that creates seismic waves. Most occur along plate boundaries. Tectonic earth-quakes occur ... there is sufficient stored elastic strain energy to drive fracture propagation along a fault plane.

A close-growing crop, grown primarily to improve and protect the soil from erosion through their ground covering foliage and/or rootmats between periods of regular crop production?

Description : A close-growing crop, grown primarily to improve and protect the soil from erosion through their ground covering foliage and/or rootmats between periods of regular crop production?

Last Answer : Ans.Cover Crops

The principal cause of soil damage in Punjab and Haryana is (a) Deforestation (b) Soil erosion (c) Excessive cultivation (d) Salinity and water logging

Description : The principal cause of soil damage in Punjab and Haryana is (a) Deforestation (b) Soil erosion (c) Excessive cultivation (d) Salinity and water logging

Last Answer : Ans: (d)

"Mulching" is the term used for the process of (a) Covering the roots of plants with loose material, dung, etc. in order to protect them from soil erosion etc. (b) Breaking down big pieces of soil into small ones (c) Transplanting of paddy seedlings (d) Nitrogen fixation of soil by use of fertilizers

Description : "Mulching" is the term used for the process of (a) Covering the roots of plants with loose material, dung, etc. in order to protect them from soil erosion etc. (b) Breaking down big pieces ... into small ones (c) Transplanting of paddy seedlings (d) Nitrogen fixation of soil by use of fertilizers

Last Answer : Ans: (a)

Which of the following functions performed by a forest help most in controlling drought? (a) forests act as water sheds (b) forests bring rainfall in monsoon (c) forests lower the temperature of the environment (d) forests prevent soil erosion

Description : Which of the following functions performed by a forest help most in controlling drought? (a) forests act as water sheds (b) forests bring rainfall in monsoon (c) forests lower the temperature of the environment (d) forests prevent soil erosion

Last Answer : Ans: (b)

The formation of laterite soil is mainly due to: (a) weathering (b) erosion (c) leaching (d) deposition

Description : The formation of laterite soil is mainly due to: (a) weathering (b) erosion (c) leaching (d) deposition

Last Answer : Ans: (c)

River Damodar is called 'Sorrow of Bengal' because it : [CPO SI 2003] (a) gets flooded often causing havoc (b) causes maximum soil erosion (c) forms number of dangerous waterfalls (d) is not a perennial river

Description : River Damodar is called 'Sorrow of Bengal' because it : [CPO SI 2003] (a) gets flooded often causing havoc (b) causes maximum soil erosion (c) forms number of dangerous waterfalls (d) is not a perennial river

Last Answer : Ans: (a)

The main reason for deforestation in Asia is - (1) excessive fuel wood collection (2) excessive soil erosion (3) floods (4) construction of roads

Description : The main reason for deforestation in Asia is - (1) excessive fuel wood collection (2) excessive soil erosion (3) floods (4) construction of roads

Last Answer : (1) excessive fuel wood collection Explanation: The main causes of total clearance are agriculture and in drier areas, fuelwood collection. The main cause of forest degradation is logging. Mining, ... and heating are overcutting forests'. This problem is worst in drier regions of the tropics.

Soil erosion on hill slopes can be checked by – (1) Afforestation (2) Terrace cultivation (3) Strip cropping (4) Contour ploughing

Description : Soil erosion on hill slopes can be checked by – (1) Afforestation (2) Terrace cultivation (3) Strip cropping (4) Contour ploughing

Last Answer : (2) Terrace cultivation Explanation: Terrace farming is a type of farming that was developed first by the Inca people. This method of farming uses "steps", called andenes that are built into the side of ... of water that would take plants with it and destroy the all of the crops on the hillside.

Soil erosion can be prevented by – (1) Increasing bird population (2) Afforestation (3) Removal of vegetation (4) Overgrazing

Description : Soil erosion can be prevented by – (1) Increasing bird population (2) Afforestation (3) Removal of vegetation (4) Overgrazing

Last Answer : (2) Afforestation Explanation: Soil erosion takes place when the soil is blown away by the wind or washed away by the rain. Afforestation or planting trees can check soil erosion as roots of trees/ ... planted their roots don't allow the soil to be blown or washed away and prevent soil erosion.

Which one of the following does not cause soil erosion? (1) Deflation (2) Deforestation (3) Weathering (4) Overcropping

Description : Which one of the following does not cause soil erosion? (1) Deflation (2) Deforestation (3) Weathering (4) Overcropping

Last Answer : (1) Deflation Explanation: Deflation is a decline in general price-levels, often caused by a reduction in the supply of money or credit. Deflation can also be brought about by direct contractions in ... in an economy, since the process often leads to a lower level of demand in the economy.

Which one of the following is the indirect use of forests? (1) Medicinal plants (2) Checking soil erosion (3) Building material (4) Grazing

Description : Which one of the following is the indirect use of forests? (1) Medicinal plants (2) Checking soil erosion (3) Building material (4) Grazing

Last Answer : (2) Checking soil erosion Explanation: Some of the indirect uses of forests include: prevention and control of soil erosion, flood control, checks on spread of deserts, increase of soil fertility ... of forest cover leads to increased runoff of rain water and its diminished seepage in soil.

Plantation of trees on a large scale to check soil erosion are called: (1) Shelter belts (2) Contour ploughing (3) Strip cropping (4) Afforestation

Description : Plantation of trees on a large scale to check soil erosion are called: (1) Shelter belts (2) Contour ploughing (3) Strip cropping (4) Afforestation

Last Answer : (4) Afforestation Explanation: Afforestation is the establishment of a forest or stand of trees in an area where there was no forest. As plant roots hold the soil. Afforestation prevents soil erosion and enables better retention of water.

The main advantage of Rain? Water Harvesting (RWH) is – (1) Recharge ground water (2) Avoid floods (3) Reduce the loss of water (4) Avoid soil erosion

Description : The main advantage of Rain? Water Harvesting (RWH) is – (1) Recharge ground water (2) Avoid floods (3) Reduce the loss of water (4) Avoid soil erosion

Last Answer : (1) Recharge ground water Explanation: Rainwater harvesting is the simple collection or storing of water through scientific techniques from the areas where the rain falls. It is a technique ... and storing rainwater by constructing structures such as dug wells, percolating pit, check dams.

The main cause of recurring flood is – (1) Soil erosion (2) Deforestation (3) Silting of river beds (4) All of the above

Description : The main cause of recurring flood is – (1) Soil erosion (2) Deforestation (3) Silting of river beds (4) All of the above

Last Answer : (4) All of the above Explanation: Floods are caused by a variety of factors, both natural and man-made. Apart from soil erosion and silting of river beds which force the water of rivers ... against water flow and in turn protect the underlying soil from getting eroded and then getting washed away.

River Damodar is called 'Sorrow of Bengal' because it – (1) gets flooded often causing havoc (2) causes maximum soil erosion (3) forms number of dangerous waterfalls (4) is not a perennial river

Description : River Damodar is called 'Sorrow of Bengal' because it – (1) gets flooded often causing havoc (2) causes maximum soil erosion (3) forms number of dangerous waterfalls (4) is not a perennial river

Last Answer : (1) gets flooded often causing havoc Explanation: Damodar River is a river flowing across the Indian states of Jharkhand and West Bengal. Rich in mineral resources, the valley is home to ... Bengal, the Damodar and its tributaries have somewhat been tamed with the construction of several dams.

Generally, the soil of the northern plains of India has been formed by – (1) degradation (2) aggradation (3) weathering in situ (4) erosion

Description : Generally, the soil of the northern plains of India has been formed by – (1) degradation (2) aggradation (3) weathering in situ (4) erosion

Last Answer : (2) aggradation Explanation: The Northern Fertile Plain lies to the south of Himalayan Region, It is also called the Gangetic Plain. It is a vast plain and level land between the Himalayas in the North ... and is very fertile. This plain is one of the largest and most fertile plains of the World.

Algal bloom results from – (1) Global warming (2) Salination (3) Eutrophication (4) Biomagnification

Description : Algal bloom results from – (1) Global warming (2) Salination (3) Eutrophication (4) Biomagnification

Last Answer : (3) Eutrophication Explanation: An algal bloom is a rapid increase or accumulation in the population of algae in freshwater or marine water systems, and are recognized by the discoloration in the ... body with nutrients, usually with an excess amount of nutrients. This is known as eutrophication.

Algal bloom results in a) Global warming b) Salination c) Eutrophication d) Biomagnification

Description : Algal bloom results in a) Global warming b) Salination c) Eutrophication d) Biomagnification

Last Answer : c) Eutrophication

Algal bloom results from (1) Global warming (2) Salination (3) Eutrophication (4) Biomagnification

Description : Algal bloom results from (1) Global warming (2) Salination (3) Eutrophication (4) Biomagnification

Last Answer : Eutrophication 

The percentage of applied irrigation water stored in the soil and made available for consumptive use by the crop

Description : The percentage of applied irrigation water stored in the soil and made available for consumptive use by the crop

Last Answer : Ans.Irrigation Efficiency

Which is not the importance of irrigation? A. Soil conservation. B. Assured crop production. C. Fulfilling food demand of India. D. Uncertain rain

Description : Which is not the importance of irrigation? A. Soil conservation. B. Assured crop production. C. Fulfilling food demand of India. D. Uncertain rain

Last Answer : C. Fulfilling food demand of India.

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

Select the correct statement . a. Tensiometer is used in frequently irrigated crop for irrigation scheduling b. Tensiometer is sensitive upto 0.85 bars of soil moisture c. Tensiometer is not suitable in Clay soil d. All of these

Description : Select the correct statement . a. Tensiometer is used in frequently irrigated crop for irrigation scheduling b. Tensiometer is sensitive upto 0.85 bars of soil moisture c. Tensiometer is not suitable in Clay soil d. All of these

Last Answer : d. All of these

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