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| Tarkalson, D.D.; Brown, B.; Kok, H.; Bjorneberg, D.L.. |
| Impact of wheat (Triticum aestivum L.) and barley (Hordeum vulgare L.) straw removal from fields on soil organic C (SOC) is a concern. Increased animal populations and potential development of cellulosic ethanol production could increase the removal of straw from fields. This paper focuses on the effects of wheat and barley straw removal on SOC in irrigated production systems, and related the results to estimates of the minimum straw C inputs required to maintain SOC (MSC) from rain-fed systems. Six studies compared SOC changes with time in irrigated systems in which wheat straw was removed or retained. These studies indicated that SOC did not decline when residues were removed. Apparently belowground biomass is supplying C to irrigated soils at a rate... |
| Tipo: Article |
Palavras-chave: Fertility; Soil quality. |
| Ano: 2010 |
URL: http://eprints.nwisrl.ars.usda.gov/1413/1/1383.pdf |
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| Tarkalson, D.D.; Brown, B.; Kok, H.; Bjorneberg, D.L.. |
| The sustainability of straw removal from wheat and barley fields from the standpoint of its effects on soil properties and nutrient cycling is a concern. A recent literature review reveals that there is no negative effect of small grain straw removal on soil organic carbon (SOC) content with irrigated conditions. With rainfed conditions, the results could be more variable and depend on site productivity. Large amounts of nutrients are removed when straw is removed, accelerating the rate of nutrient depletion and cost of replacing these nutrients. |
| Tipo: Article |
Palavras-chave: Soil; Water. |
| Ano: 2009 |
URL: http://eprints.nwisrl.ars.usda.gov/1335/1/1312.pdf |
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| Tarkalson, D.D.; Brown, B.; Kok, H.; Bjorneberg, D.L.. |
| The effects of straw removal from irrigated wheat and barley fields cropped to wheat and barley on soil properties and nutrient cycling is a concern due to its potential impact on the sustainability of agricultural production. Increasing demand of straw for animal bedding and the potential development of cellulosic ethanol production will likely increase the demand in the future. Previous reviews addressing changes in soil properties when crop residues are removed focused primarily on rain-fed systems. This paper reviews published research assessing the effects of wheat and barley straw removal on soil organic carbon (SOC), and analyzes changes in nutrient cycling within irrigated wheat and barley production systems. The effects of straw removal on bulk... |
| Tipo: Article |
Palavras-chave: Dryland crops; Small grain; Soil. |
| Ano: 2009 |
URL: http://eprints.nwisrl.ars.usda.gov/1569/1/1525.pdf |
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