Manures, Fertilizers and Soil Fertility Management 3(2+1)
Content
Theory - Introduction and importance of organic manures, properties and methods of preparation of bulky and concentrated manures.
- Green/leaf manuring.
- Fertilizer recommendation approaches.
- Integrated nutrient management.
- Chemical fertilizers: classification, composition and properties of major nitrogenous, phosphatic, potassic fertilizers, secondary & micronutrient fertilizers, Complex fertilizers, nano fertilizers
- Soil amendments,
- Fertilizer Storage, Fertilizer Control Order.
- History of soil fertility and plant nutrition. criteria of essentiality. role, deficiency and toxicity symptoms of essential plant nutrients,
- Mechanisms of nutrient transport to plants, factors affecting nutrient availability to plants.
- Chemistry of soil nitrogen, phosphorus, potassium, calcium, magnesium, sulphur and micronutrients.
- Soil fertility evaluation,
- Soil testing.
- Critical levels of different nutrients in soil.
- Forms of nutrients in soil, plant analysis, rapid plant tissue tests.
- Indicator plants.
- Methods of fertilizer recommendations to crops.
- Factor influencing nutrient use efficiency (NUE), methods of application under rainfed and irrigated conditions.
Practical
- Introduction of analytical instruments and their principles, calibration and applications,
- Colorimetry and flame photometry.
- Estimation of soil organic carbon,
- Estimation of alkaline hydrolysable N in soils.
- Estimation of soil extractable P in soils.
- Estimation of exchangeable K; Ca and Mg in soils .
- Estimation of soil extractable S in soils.
- Estimation of DTPA extractable Zn in soils.
- Estimation of N in plants.
- Estimation of P in plants.
- Estimation of K in plants.
- Estimation of S in plants.
