Nutrient management

Johnson, D. E., Ward, B. M., and Ramsay, J. J. (1996). Chapter 15. Livestock methane Current emissions and mitigation potential. In "Nutrient Management of Food Animals to Enhance and Protect the Environment", (E. T. Kornegay, Ed.). CRC Press, Boca Raton, FL. 

In organic systems the number of hours of hand weeding needs to be reduced, as labour, particularly in the developed countries, is expensive. This can be achieved by competition, the timing of cultivations, adaptation of the rotation nutrient management system and by crop density (Kropff, et al., 2000). Barberi, et al. (2002) experimented with a system of soil disinfection using hot steam to sterilise weed seeds. 

Application of animal manures to soil serves as an important element of nutrient management. In addition to nutrients and the organic carbon recycled to maintain or increase soil organic matter content, which is a key element... 

Maturity is an important parameter for the nutrient management of compost N availability in compost is closely related to the maturity reached during composting (Bemal et al. 1998 Griffin and Hutchinson 2007). Larsen et al. (2007) found that anaerobically digested and composted municipal solid waste immobilized N in the initial stage of decomposition. The N immobilization in the composted municipal... 

Nutraceuticals, 12 61 17 643-683 efficacy of, 17 647-649 future trends in, 17 674 health benefits of, 17 645-649 identification of, 17 646-647 market for, 17 673-674 product classes of, 17 649-673 safety of, 17 647 vitamins as, 17 649-655 NutraSweet, 24 226, 229 Nutrient feeding, for fermentation, 11 39 Nutrient Management Plans, 11 126-127 Nutrient Profiles (AAFCO), 10 857, 858-859t Nutrients... 

Soil injection of farm slurries and sewage sludges eliminates the odour and visual problem associated with surface spreading, it can control surface run-off and help prevent watercourse pollution. It can avoid crop taint and pathogen transfer on pastures and can provide soil loosening with better nutrient management. 

Dobermann A, Fairhurst T. 2000. Rice Nutrient Disorders and Nutrient Management. Manila Institute and International Rice Research Institute. 

United States Department of Agriculture (USDA). (2005). 7 CFR 205.203—Soil fertility and crop nutrient management practice standard. http //vlex.com/vid/19902699Accessed Dec. 08. 

Oborn, I., Edwards, A.C., Witter, E., Oenema, O., Ivarsson, K., Withers, P.J.A., Nilsson, S.I. and Richer Stinzing, A. 2003. Element balances as a tool for sustainable nutrient management a critical appraisal of their merits and limitations within an agronomic and environmental context. European Journal of Agronomy 20 211-225. 

Oenema, O., Kros, H. and de Vries, W. 2003. Approaches and uncertainties in nutrient budgets implications for nutrient management and environmental policies. European Journal of Agronomy 20 3-16. 

Weed-, disease-, nutrient management Lower abundances of predaceous beetles, lower diversity of non-predaceous beetles Pearsall and Walde(1995)... 

The main problems in organic seed production are nutrient management, disease and pest management, and weed control. Among the seedborne diseases in particular require special attention. To reduce the risk of disease infestation, optimal climatic conditions and thus the location for seed production can be important (Dornbusch et al. 1992 Velema 2004). In some cases seed production should be located in warmer and drier climates, away from the areas of origin and destination. 

Anac, D.. P. Martin-Prevel Improved Crop Quality by Nutrient Management. Kluwer Academic Publishers, Norwetl, MA, 1999. 

Havlin, J.L., S.T. Tisdale, and W. Helson Soil Fertility and Fertilizers An Introduction to Nutrient Management, Prentice-Hall, Inc., Upper Saddle River, NJ, 1998. 

Additional reasons to manage weeds in ornamental plants and conifer trees include fire protection, frost protection, rodent and disease mitigation, nutrient management, and aesthetics. Uncontrolled weeds and brush become serious fire hazards in the fall or early spring when herbaceous weeds are dry. Plantations of conifers have been lost because weeds were not controlled and fires started. Fires are less destructive when herbaceous vegetation is controlled. 

In addition to the above federal programs, states have appropriated about 1 billion for conservation initiatives. These cost-share and incentive programs are resulting in increasing adoption of BMPs. The most important of these for soil, water, and wildlife quality are conservation tillage, field and vegetative buffers (conservation buffers), wetland restoration, nutrient management, and IPM. 

The impact of soil management on water quality and the greater use of vegetative buffers is only a part of the picture. Efficient management of inputs is both profitable and environmentally beneficial. Several states require livestock farms to have comprehensive nutrient management plans that account for all sources of nutrients and match nutrient application and availability to crop needs (USDA-ERS, 1997). 

Table 32.4 Percent of acres or hectares containing various nutrient management planning components in the United States during 1998...

CTIC (1999). Brochure What is a Crop Nutrient Management Plan ... 

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