SOIL ORGANIC MATTER IN SUSTAINABLE AGRICULTURE - CHAPTER 11 (END) ppt

... organic- waste-degrading earthworms can increase rapidly, fragmenting organic wastes and increasing microbial activity in them dramatically. The main difference between com- posting and vermicomposting ... on the soil nutrient cycling processes in many ecosystems. By ingesting and turning over large amounts of soil and organic matter, they increase the rates of mineralization of...

Ngày tải lên: 12/08/2014, 05:21

... relatively organic- matter- free sand and organic- matter- rich clays. Methodological details no doubt in uence findings. In a study of fresh residue recovery, Rovira et al. (1998) found that density-based ... LLC 100 Soil Organic Matter in Sustainable Agriculture Rovira, P., and V.R. Vallejo (2003). Physical protection and biochemical quality of organic matter in Medi...

Ngày tải lên: 12/08/2014, 05:21

... PM © 2004 by CRC Press LLC 132 Soil Organic Matter in Sustainable Agriculture Low-Rate Organic Amendment 143 Organic Soil Management, or Long-Term Soil- Building 143 OM-Mediated Specific Suppression ... LLC 172 Soil Organic Matter in Sustainable Agriculture McKellar, M.E., and E.B. Nelson. 2003. Compost-induced suppression of Pythium damping-off is mediated by fa...

Ngày tải lên: 12/08/2014, 05:21

... LLC 182 Soil Organic Matter in Sustainable Agriculture other fungi) or microbial competitors]; or (5) growing crops with multiple-gene pathogen resistance or limiting the number of gene-for-gene-resistant ... 190 Glomalin and Aggregate Stability 191 Glomalin under Elevated CO 2 194 Contribution of Soil Fungi to Organic Matter 194 Managing Soil Fungi to Increase Soil Or...

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... Press LLC 260 Soil Organic Matter in Sustainable Agriculture al., 1996). In wheat–fallow, no tillage can keep the surface soil moister during the fallow phase such that organic matter decomposition ... long-term studies, relative changes in soil organic C and N between tillage systems can provide useful information on the fate of organic matter. Soil organic C...

Ngày tải lên: 12/08/2014, 05:21

... Modeling soil organic matter in organic- amended and nitrogen fertilized long-term plots. Soil Sci. Soc. Am. J. 56:476–488. Pia, J. F. 1998. CIESA Project: Biointensive mini-farming in Patagonia. In ... 68:253–268. With permission.) organic conventional low-input Depth (cm) 0-1 5 1 5-3 0 3 0-6 0 no winter cover crop 6 0-9 0 9 0-1 20 winter cover crop 12 0-1 50 1...

Ngày tải lên: 12/08/2014, 05:21

... long-term (1 2- to 15-year) no-till continuous wheat farming system compared with a system using conventional tillage wheat–fallow © 2004 by CRC Press LLC 312 Soil Organic Matter in Sustainable Agriculture Conservation ... in © 2004 by CRC Press LLC 296 Soil Organic Matter in Sustainable Agriculture Soil Quality Soil quality is defined as the capacity of a so...

Ngày tải lên: 12/08/2014, 05:21

... cultivation. In Belarus, however, thick organic soils are often used as arable land, and shallow soils as grassland. A soil profiling technique called “land crowning” was developed in Sweden for draining ... organic soils include large water supply and low-energy requirement for tillage. In western Europe, arable farming on organic soils is facilitated by sand cover, which increa...

Ngày tải lên: 11/08/2014, 15:20

... mechanism in place in Bangladesh for drought forecasting. Drought occurs for three main reasons: low residual soil moisture as a result of inadequate rainfall in the monsoon; low or no rainfall in summer ... remaining 16% could not recover at all. 11. 4.4 DROUGHTS IN INDIA: CASE STUDY OF GUJARAT High drought prone areas in India are located mainly in the Western part of the c...

Ngày tải lên: 18/06/2014, 19:20

... Certain organochlorine and organobromine contami- nants in Swedish human milk in perspective of past 20–30 years. Chemosphere 40, 111 1 112 3. Norstrom, R.J. (1988). Bioaccumulation of polychlorinated ... term in- depth studies of pollution of the natural environment continue. The use of biotic indices in environmental monitoring is one way of identifying existing/developing polluti...

Ngày tải lên: 18/06/2014, 22:20