Manure contains many organic substances of biological origin which can be easily degraded and absorbed by plants. It helps in recycling of biological waste. Manures increase the fertility of soil for long duration without causing any harm. However, the chemical fertilizers (e.g., urea) improve soilRead more
Manure contains many organic substances of biological origin which can be easily degraded and absorbed by plants. It helps in recycling of biological waste. Manures increase the fertility of soil for long duration without causing any harm. However, the chemical fertilizers (e.g., urea) improve soil fertility for short duration but cause environmental hazard. Continuous use of fertilizers in a particular area/crop field causes destruction of soil fertility.
There are three different sources from where a plant gets the 16 essential nutrients: air, water and soil (see Table 1.2). The nutrients taken from air and water are carbon, oxygen and hydrogen and these are taken by stomata (of leaf), lenticel (of stem) and root-hairs (of roots). Rest 13 nutrientsRead more
There are three different sources from where a plant gets the 16 essential nutrients: air, water and soil (see Table 1.2). The nutrients taken from air and water are carbon, oxygen and hydrogen and these are taken by stomata (of leaf), lenticel (of stem) and root-hairs (of roots). Rest 13 nutrients are obtained from soil. These 13 nutrients remain dissolved in water in the soil and are absorbed by the plant roots.
The macronutrients are nitrogen, phosphorus, potassium, calcium, magnesium and sulphur. They are called macronutrients because they are required by crop plants in large amounts.
The macronutrients are nitrogen, phosphorus, potassium, calcium, magnesium and sulphur. They are called macronutrients because they are required by crop plants in large amounts.
If we develop those varieties of- crops which contain desired agronomic traits (e.g., high yield, dwarfness, early maturing, etc.) then it will help in setting higher production, Thus, tallness and profuse branching are desirable characters for fodder crops. Dwarfness is desired in cereals, so thatRead more
If we develop those varieties of- crops which contain desired agronomic traits (e.g., high yield, dwarfness, early maturing, etc.) then it will help in setting higher production, Thus, tallness and profuse branching are desirable characters for fodder crops. Dwarfness is desired in cereals, so that less nutrient, are consumed by these crops. Dwarf varieties of cereals also provide protection from lodging.
Crop production can go down due to biotic (diseases due to infection by viruses or fungi, insects and nematodes) and abiotic (drought, salinity, water logging, heat, cold and frost) stresses under different situations.
Crop production can go down due to biotic (diseases due to infection by viruses or fungi, insects and nematodes) and abiotic (drought, salinity, water logging, heat, cold and frost) stresses under different situations.
Compare the use of manure and fertilizers in maintaining soil fertility.
Manure contains many organic substances of biological origin which can be easily degraded and absorbed by plants. It helps in recycling of biological waste. Manures increase the fertility of soil for long duration without causing any harm. However, the chemical fertilizers (e.g., urea) improve soilRead more
Manure contains many organic substances of biological origin which can be easily degraded and absorbed by plants. It helps in recycling of biological waste. Manures increase the fertility of soil for long duration without causing any harm. However, the chemical fertilizers (e.g., urea) improve soil fertility for short duration but cause environmental hazard. Continuous use of fertilizers in a particular area/crop field causes destruction of soil fertility.
See lessHow do plants get nutrients?
There are three different sources from where a plant gets the 16 essential nutrients: air, water and soil (see Table 1.2). The nutrients taken from air and water are carbon, oxygen and hydrogen and these are taken by stomata (of leaf), lenticel (of stem) and root-hairs (of roots). Rest 13 nutrientsRead more
There are three different sources from where a plant gets the 16 essential nutrients: air, water and soil (see Table 1.2). The nutrients taken from air and water are carbon, oxygen and hydrogen and these are taken by stomata (of leaf), lenticel (of stem) and root-hairs (of roots). Rest 13 nutrients are obtained from soil. These 13 nutrients remain dissolved in water in the soil and are absorbed by the plant roots.
See lessWhat are macro-nutrients and why are they called macronutrients?
The macronutrients are nitrogen, phosphorus, potassium, calcium, magnesium and sulphur. They are called macronutrients because they are required by crop plants in large amounts.
The macronutrients are nitrogen, phosphorus, potassium, calcium, magnesium and sulphur. They are called macronutrients because they are required by crop plants in large amounts.
See lessWhat are the desirable agronomic characteristics for crop improvements?
If we develop those varieties of- crops which contain desired agronomic traits (e.g., high yield, dwarfness, early maturing, etc.) then it will help in setting higher production, Thus, tallness and profuse branching are desirable characters for fodder crops. Dwarfness is desired in cereals, so thatRead more
If we develop those varieties of- crops which contain desired agronomic traits (e.g., high yield, dwarfness, early maturing, etc.) then it will help in setting higher production, Thus, tallness and profuse branching are desirable characters for fodder crops. Dwarfness is desired in cereals, so that less nutrient, are consumed by these crops. Dwarf varieties of cereals also provide protection from lodging.
See lessHow do biotic and abiotic factors affect crop production?
Crop production can go down due to biotic (diseases due to infection by viruses or fungi, insects and nematodes) and abiotic (drought, salinity, water logging, heat, cold and frost) stresses under different situations.
Crop production can go down due to biotic (diseases due to infection by viruses or fungi, insects and nematodes) and abiotic (drought, salinity, water logging, heat, cold and frost) stresses under different situations.
See less