The yield parameters and cost economics of Withania somnifera were studied using Integrated Nutrient Management (INM) treatments. Withania somnifera is cultivated in around 10,780 ha with a production of 8429 tones in India. The annual demand of this herb increased from 7028 tones (2001-2002) to 9127 tones (2004-2005). The field experiment was conducted at the research farm of Department of Pla...

Swine manure contains considerable amounts of total (P) and soluble phosphorus (PO(4)-P) which may increase the soil P content when applied in excess to crop requirements and, consequently, risk water eutrophication. The feasibility of using magnesium (Mg) from the by-product of electrolysis and foundries (BPEF) for the removal of P from liquid swine manure was studied by adding up to 3 g of Mg...

Phosphorous (P) is a non-renewable resource and an important non-substitutable macronutrient, which exists in nature as phosphates in various inorganic or organic forms. Agriculture, through its reliance on inorganic fertilizers, is the primary user of commercially-produced P, and there is concern that current exploitation is unsustainable. Total annual global production is currently 20 million...

Most of the cultural trials and experiments with cinchona prior to 1900 were recorded as observations. AWith the possible exception of the work by COWGILL (1) the published information with reference to the effects of fertilizer applications onl growth and alkaloid content of cinchona deal mainly with established trees (3, 4, 8, 9, 11). Although it is generally conceded that the first few month...

Application of litter and other organic by-products to agricultural land off site of animal production facilities has created both environmental concerns and agro-economic opportunities, but limited long-term, field-scale data are available to guide management decisions. Thus, the objective of this study was to determine the water quality effects of repeated annual poultry litter application as...

Two contemporary effects of humans on aquatic ecosystems are increasing temperatures and increasing nutrient concentrations from fertilizers. The response of organisms to these perturbations has important implications for ecosystem processes. We examined the effects of phosphorus (P) supply and temperature on organismal carbon, nitrogen and phosphorus (C, N, and P) content, cell size and alloca...

Tiarks, A.E. and Haywood, J.D., 1986. Pinw taeda L. response to fertilization, herbaceous plant control, and woody plant control. For. Ecol. Manage., 14 : 103-1 12. On an intensively prepared site, a complete fertilizer applied at planting, and control of herbaceous and woody plants for the first 4 years, increased Pinus taeda L. volume at age 5 to 25.9 m3/ha compared t o 11.8 m3/ha without the...

Few studies have examined the use of poultry litter as an alternative to inorganic P and K fertilizers for flood-irrigated rice. The objective of this study was to compare fresh and pelletized poultry litter to inorganic P and K fertilizers to document the availability of P and K in poultry litter. Inorganic P and K fertilizers, fresh broiler litter, and pelletized litter were preplant-incorpor...

Grassland introduction into intensively managed agricultural landscapes may enhance soil organic matter (SOM) content and ecosystem services. However, the magnitude of this effect depends on grassland management practices, and their influence on the soil system. The aim of this paper is to highlight these impacts and their consequences for SOM dynamics and element cycling. We focused in particu...