Journal Title
Title of Journal: Nutr Cycl Agroecosyst
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Abbravation: Nutrient Cycling in Agroecosystems
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Publisher
Springer Netherlands
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Authors: John T Spargo Michel A Cavigelli Steven B Mirsky Jude E Maul John J Meisinger
Publish Date: 2011/02/20
Volume: 90, Issue: 2, Pages: 253-266
Abstract
Sustainable soil fertility management depends on longterm integrated strategies that build and maintain soil organic matter and mineralizable soil N levels These strategies increase the portion of crop N needs met by soil N and reduce dependence on external N inputs required for crop production To better understand the impact of management on soil N dynamics we conducted field and laboratory research on five diverse management systems at a longterm study in Maryland the USDA Agricultural Research Service Beltsville Farming Systems Project FSP The FSP is comprised of a conventional notill corn Zea mays L–soybean Glycine max L–wheat Triticum aestivum L/doublecrop soybean rotation NT a conventional chiseltill corn–soybean–wheat/soybean rotation CT a 2 year organic corn–soybean rotation Org2 a 3 year organic corn–soybean–wheat rotation Org3 and a 6 year organic corn–soybean–wheat–alfalfa Medicago sativa L 3 years rotation Org6 We found that total potentially mineralizable N in organic systems average 315 kg N ha−1 was significantly greater than the conventional systems average 235 kg N ha−1 Particulate organic matter POM–C and –N also tended to be greater in organic than conventional cropping systems Average corn yield and N uptake from unamended minus N field microplots were 40 and 48 respectively greater in organic than conventional grain cropping systems Among the three organic systems all measures of N availability tended to increase with increasing frequency of manure application and crop rotation length Org2 Org3 ≤ Org6 while most measures were similar between NT and CT Our results demonstrate that organic soil fertility management increases soil N availability by increasing labile soil organic matter Relatively high levels of mineralizable soil N must be considered when developing soil fertility management plans for organic systems
Keywords:
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Other Papers In This Journal:
- Amending soil with used cooking oil to reduce nitrogen losses after cole crop harvest: a 15 N study
- Effects of fertiliser type and the presence or absence of plants on nitrous oxide emissions from irrigated soils
- Relative contribution of trees and crops to soil carbon content in a parkland system in Burkina Faso using variations in natural 13 C abundance
- Shrubs affect soil nutrients availability with contrasting consequences for pasture understory and tree overstory production and nutrient status in Mediterranean grazed open woodlands
- Forecasting long-term global fertilizer demand
- 15 N tracer technique analysis of the absorption and utilisation of nitrogen fertiliser by potatoes
- Nitrogen, phosphorus, and potassium budgets in Indian agriculture
- Effects of different manuring systems with and without biogas digestion on nitrogen cycle and crop yield in mixed organic dairy farming systems
- Crop response of aerobic rice and winter wheat to nitrogen, phosphorus and potassium in a double cropping system
- Net N immobilisation during the biodegradation of mucilage in soil as affected by repeated mineral and organic fertilisation
- Phosphorus and potassium cycling in a long-term no-till integrated soybean-beef cattle production system under different grazing intensities insubtropics
- Contribution of relay intercropping with legume cover crops on nitrogen dynamics in organic grain systems
- Method and timing of grassland renovation affects herbage yield, nitrate leaching, and nitrous oxide emission in intensively managed grasslands
- Accumulation of phosphorus fractions in typic Hapludalf soil after long-term application of pig slurry and deep pig litter in a no-tillage system
- Soil N 2 O fluxes in integrated production systems, continuous pasture and Cerrado
- Comparative short-term effects of different quality organic resources on maize productivity under two different environments in Zimbabwe
- Gross nitrogen mineralization in pulse-crop rotations on the Northern Great Plains
- Management strategies for reducing soil degradation through modeling in a GIS environment in northern Ethiopia catchment
- Millet nutrient use efficiency as affected by natural soil fertility, mineral fertilizer use and rainfall in the West African Sahel
- Nitrogen fertilization and critical nitrogen concentration for contemporary high yielding cotton under no-tillage
- Effects of catch crops on silage maize ( Zea mays L.): yield, nitrogen uptake efficiency and losses
- Nitrogen input, 15 N balance and mineral N dynamics in a rice–wheat rotation in southwest China
- Nutrient cycling in an agroforestry alley cropping system receiving poultry litter or nitrogen fertilizer
- How much nitrogen is fixed by biological symbiosis in tropical dry forests? 2. Herbs
- Nitrogen fertilizer placement and timing affects bread wheat ( Triticum aestivum) quality and yield in an irrigated bed planting system
- Nitrogen fixation of red clover interseeded with winter cereals across a management-induced fertility gradient
- Response of bulk chemical composition, lignin and carbohydrate signature to grassland conversion in a ley-arable cropping system
- Nitrogen recovery and downslope translocation in maize hillside cropping as affected by soil conservation
- Effect of seasonal rainfall, N fertilizer and tillage on N utilization by dryland wheat in a semi-arid environment
- Long-term effects of fertilization and manuring on groundnut yield and nutrient balance of Alfisols under rainfed farming in India
- Response of intensively grazed ryegrass dairy pastures to fertiliser phosphorus and potassium
- Effect of seasonal rainfall, N fertilizer and tillage on N utilization by dryland wheat in a semi-arid environment
- Above- and belowground litter stocks and decay at a multi-species afforestation site on arid, saline soil
- Productivity of yam-based systems with herbaceous legumes and short fallows in the Guinea-Sudan transition zone of Benin
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