Merits. 1. Economically important desired fishes are made available. 2. A large number of fishes are raised in a small area. 3. Fishes are made to breed in different seasons. 4. There is a little mortality in the younger stages of the fishes. 5. Through selective hybridisation, yield and quality ofRead more
Merits. 1. Economically important desired fishes are made available.
2. A large number of fishes are raised in a small area.
3. Fishes are made to breed in different seasons.
4. There is a little mortality in the younger stages of the fishes.
5. Through selective hybridisation, yield and quality of fishes are improved.
demerits1. Only some selected high yielding and economically important breeds are reared.
2′ Fish culture is a threat.to biodiversity, since other forms of aquatic organisms are being ignored. Even natural waters are-being seeded with economically important fishes; this too is affecting the natural biodiversity of the water bodies.
In agriculture, higher yield can be obtained only by applying higher yielding varieties, improved farming practices modern technology, latest agricultural machines and implements, nutrient supply, etc. All these require high cost and knowledge of new techniques and improvements. Therefore, a farmer'Read more
In agriculture, higher yield can be obtained only by applying higher yielding varieties, improved farming practices modern technology, latest agricultural machines and implements, nutrient supply, etc. All these require high cost and knowledge of new techniques and improvements. Therefore, a farmer’s purchasing capacity for inputs determines the cropping system and production exercises.
Compost:- 1. it is prepared from all types of organic remains garbage, sewage, sludge, animal refuse, farm waste, straw, uprooted weeds, etc. 2. Organic remains are decomposed by released enzymes of the microorganisms. 3. It takes 3 to 6 months to prepare. Vermicompost:- 1. It is prepared from domesRead more
Compost:-
1. it is prepared from all types of organic remains garbage, sewage, sludge, animal refuse, farm
waste, straw, uprooted weeds, etc.
2. Organic remains are decomposed by released enzymes of the microorganisms.
3. It takes 3 to 6 months to prepare.
Vermicompost:-
1. It is prepared from domestic waste, vegetable waste, uprooted weeds and farm refuse.
2. Organic remains are fed by earthworms and in pulverized state.
3. It takes 1 to 2 months to preare
All crops do not grow under similar conditions. Some require high temperature, some low temperature, longer duration of sunlight, shorter duration of sunlight, more humidity, low humidity, moderate humidity, loam soil, sandy soil, etc. Apple cannot be gror.tn in plains because it requires several daRead more
All crops do not grow under similar conditions. Some require high temperature, some low temperature, longer duration of sunlight, shorter duration of sunlight, more humidity, low humidity, moderate humidity, loam soil, sandy soil, etc. Apple cannot be gror.tn in plains because it requires several days of low temperature. In plains, there are two major seasons of crop plants: kharif (rainy season) and rabi (winter season).
Hybridisation. It is crossing of two (or more) types of individuals with different useful traits in order to bring them together in the progeny. Photoperiod. light is duration of day light that influences plants and other organisms in their growth, reproduction and maturation
Hybridisation. It is crossing of two (or more) types of individuals with different useful traits in order to bring them together in the progeny.
Photoperiod. light is duration of day light that influences plants and other organisms in their growth, reproduction and maturation
Give merits and demerits of fish culture.
Merits. 1. Economically important desired fishes are made available. 2. A large number of fishes are raised in a small area. 3. Fishes are made to breed in different seasons. 4. There is a little mortality in the younger stages of the fishes. 5. Through selective hybridisation, yield and quality ofRead more
Merits. 1. Economically important desired fishes are made available.
See less2. A large number of fishes are raised in a small area.
3. Fishes are made to breed in different seasons.
4. There is a little mortality in the younger stages of the fishes.
5. Through selective hybridisation, yield and quality of fishes are improved.
demerits1. Only some selected high yielding and economically important breeds are reared.
2′ Fish culture is a threat.to biodiversity, since other forms of aquatic organisms are being ignored. Even natural waters are-being seeded with economically important fishes; this too is affecting the natural biodiversity of the water bodies.
In agriculture practices, higher input gives higher yield. Discuss how?
In agriculture, higher yield can be obtained only by applying higher yielding varieties, improved farming practices modern technology, latest agricultural machines and implements, nutrient supply, etc. All these require high cost and knowledge of new techniques and improvements. Therefore, a farmer'Read more
In agriculture, higher yield can be obtained only by applying higher yielding varieties, improved farming practices modern technology, latest agricultural machines and implements, nutrient supply, etc. All these require high cost and knowledge of new techniques and improvements. Therefore, a farmer’s purchasing capacity for inputs determines the cropping system and production exercises.
See lessDifferentiate between compost and Vermicompost.
Compost:- 1. it is prepared from all types of organic remains garbage, sewage, sludge, animal refuse, farm waste, straw, uprooted weeds, etc. 2. Organic remains are decomposed by released enzymes of the microorganisms. 3. It takes 3 to 6 months to prepare. Vermicompost:- 1. It is prepared from domesRead more
Compost:-
See less1. it is prepared from all types of organic remains garbage, sewage, sludge, animal refuse, farm
waste, straw, uprooted weeds, etc.
2. Organic remains are decomposed by released enzymes of the microorganisms.
3. It takes 3 to 6 months to prepare.
Vermicompost:-
1. It is prepared from domestic waste, vegetable waste, uprooted weeds and farm refuse.
2. Organic remains are fed by earthworms and in pulverized state.
3. It takes 1 to 2 months to preare
Cultivation practices and crop yield are related to environmental conditions. Explain.
All crops do not grow under similar conditions. Some require high temperature, some low temperature, longer duration of sunlight, shorter duration of sunlight, more humidity, low humidity, moderate humidity, loam soil, sandy soil, etc. Apple cannot be gror.tn in plains because it requires several daRead more
All crops do not grow under similar conditions. Some require high temperature, some low temperature, longer duration of sunlight, shorter duration of sunlight, more humidity, low humidity, moderate humidity, loam soil, sandy soil, etc. Apple cannot be gror.tn in plains because it requires several days of low temperature. In plains, there are two major seasons of crop plants: kharif (rainy season) and rabi (winter season).
See lessDefine the terms hybridization and photoperiod.
Hybridisation. It is crossing of two (or more) types of individuals with different useful traits in order to bring them together in the progeny. Photoperiod. light is duration of day light that influences plants and other organisms in their growth, reproduction and maturation
Hybridisation. It is crossing of two (or more) types of individuals with different useful traits in order to bring them together in the progeny.
See lessPhotoperiod. light is duration of day light that influences plants and other organisms in their growth, reproduction and maturation