Long term Effect of Organic manures and Fertilizers on Periodical changes of Inorganic Potassium fractions in Soils after 19 cycles of Pearl millet–Wheat cropping system

Autor:	K.S. Grewal, Sonam Binjola, R.S. Antil
Rok vydání:	2017
Předmět:	business.industry Nutrient management Potassium chemistry.chemical_element Plant Science engineering.material Biology Nutrient chemistry Agronomy Agriculture Soil water engineering Fertilizer Soil fertility Cropping system business
Zdroj:	Vegetos- An International Journal of Plant Research. 30:243
ISSN:	2229-4473 0970-4078
DOI:	10.5958/2229-4473.2017.00074.x
Popis:	Potassium is the major nutrient in soils but it varies from place to place based on physico-chemical properties of soil. Potassium exists in different inorganic forms in soil viz. water soluble, exchangeable and non-exchangeable (fixed). These fractions exist in dynamic equilibrium among them which govern the K nutrition in crops and are important for the growth of higher plants and microbes. Continuous use of organic and inorganic fertilizers largely affects the status and distribution of potassium fractions which are equally important contributors to soil fertility and crop productivity. Ongoing long-term fertilizer experiment was started in the year 1995. Amongst the different K fractions, non exchangeable K was found dominant in soil. For sustainability, organic manures like FYM are important in maintaining the nutrient management under intensive cropping system.
Databáze:	OpenAIRE
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