Tillage and cropping system effects on selected conditions of a soil cropped to grain sorghum for twelve years
| Autor: | Paul W. Unger, Ordie R. Jones, Getachew Alemu |
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| Rok vydání: | 1997 |
| Předmět: | |
| Zdroj: | Communications in Soil Science and Plant Analysis. 28:63-71 |
| ISSN: | 1532-2416 0010-3624 |
| DOI: | 10.1080/00103629709369772 |
| Popis: | Soil and water conserving practices must be used to sustain dryland crop production in semiarid regions. In this 1994 study, we evaluated the effects of different cropping system and tillage method treatments on surface residue cover, organic matter content, aggregation, and water infiltration for a soil used for grain sorghum [Sorghum bicolor (L.) Moench] production in the United States Southern Great Plains from 1982 to 1994. Cropping systems were continuous sorghum (CS) and winter wheat (Triticum aestivum L.)— fallow—grain sorghum—fallow (designated WSF) and tillage methods were no‐tillage (NT) and stubble mulch tillage (SMT). Treatments were CS‐NT, CS‐SMT, WSF‐NT, and WSF‐SMT. Surface residue cover before planting sorghum was >70% with CS‐NT and WSF‐NT, 29% with CS‐SMT, and 12% with WSF‐SMT. Surface cover after planting was =50% with both NT treatments, whereas amounts with other treatments were similar to those before planting. Soil organic matter contents (0‐ to 10‐cm depth) were greater on... |
| Databáze: | OpenAIRE |
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