Tiêu đề Soil Science Part-7.pdf ✅

www.iaritoppers.in Whatsapp : +91-9694095242 Page | 1 Soil Science 5 th Edition 2024
www.iaritoppers.in Whatsapp : +91-9694095242 Page | 2 Manures & Fertilizers 1. Manure: Can be grouped into two: (A) Bulky Organic manure (B) Concentrated Organic manure (A) Bulky organic manure:  Contain small percentage of nutrients and they are applied in large quantities.  Example- FYM, Compost, Green Manure, Night soil, vermi-compost. 1. Farm Yard manure ( FYM ):  Generally applied: 10-20 t/ha.  For vegetables/fodder grasses: More than 20 t/ha. 2. Compost:  Rotting or decomposition of organic matter by micro organism under controlled conditions. Methods of compost preparation:  Indore method:  Known as heap or Aerobic method  Developed at Institute of Plant industry Indore by Sir Albert Howard.  In this method, animal dung is used as the catalytic agent along with different types of organic wastes available on the farm. N - 0.5 - 0.75 % P - 0.25 % K - 0.5 %

www.iaritoppers.in Whatsapp : +91-9694095242 Page | 4 4. Sheep and Goat manure: 5. Poultry manure: N - 3.03 % P - 2.63 % K - 1.4 % 6. Green Manure:  Improves soil structure.  Supplies organic matter and nutrients, (Particularly Nitrogen). Two types:  In Situ green Manuring:  Growing of green manure crops and decomposed in the same field e.g.: Sunhemp, dhaicha, cluster beans and Sesbania rostrata.  Sesbania rostrata is a stem nodulating green manure crop.  Ex-Situ or green leaf manuring:  Collecting green leaf along with twigs of trees e.g.- Glyricidia, Pongamia, Neem, Mahua, Subabul. N - 3 % P - 1 % K - 2 %