Interactive Effects of Nitrogen and Potassium Fertilization on Oxalate Content in Napiergrass (Pennisetum Purpureum) (Report)
Asian - Australasian Journal of Animal Sciences 2010, June, 23, 6
Asian - Australasian Journal of Animal Sciences
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INTRODUCTION In Asian countries, intensive animal production systems are developing fast due to shortage of grazing land (Sheen and Hong, 1999). Concentrated animal operations generate substantial amounts of manure that are rich in plant nutrients including nitrogen (N) and potassium (K) (Harada, 1992). Excessive manure is often applied on limited areas of forage crop fields resulting in high to excessively high applications of N and K. Forage crops take up N and K easily, and accumulate them abundantly in the aboveground parts (Harada, 1992). Experiments carried out with tropical grasses showed that soluble oxalate content increased with increasing levels of N fertilizer (Jones and Ford, 1972; Mani and Kothandaraman, 1980). It was also shown that soluble oxalate content correlates highly with K concentration in napiergrass (Pennisetum purpureum) (Rahman et al., 2008b). These findings suggest that high application rates of animal manure may enhance the soluble oxalate content that can cause oxalate toxicity in animals (Dhillon et al., 1971; Sidhu et al., 1996).
- Category: Industries & Professions
- Published: Jun 01, 2010
- Publisher: Asian - Australasian Association of Animal Production Societies
- Seller: The Gale Group, Inc.
- Print Length: 13 Pages
- Language: English