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Comparison of soil water content and corn yield in furrow and conventional ridge sown systems in a semiarid region of China |
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| Authors: | YH Jin DW Zhou SC Jiang |
| Institution: | a Key Laboratory of Vegetation Ecology, Ministry of Education, Institute of Grassland Science, Northeast Normal University, 5268 Renmin Street, Changchun 130024, China b College of Urban and Environmental Science, Northeast Normal University, Changchun 130024, China c Northeast Institute of Geography and Agroecology, Chinese Academy of Sciences, Changchun 130012, China |
| Abstract: | Water deficits and unusually warm soil temperatures can adversely affect conventional ridge sown systems. Increasingly serious water and temperature issues associated with global climate change may be problematic in the future, particularly in semiarid regions. This study explored the soil water and crop yield benefits of switching the sowing location of corn from ridges to furrows. Experiments were conducted over three years. Corn was grown in shallow furrow (SF) and deep furrow (DF) sown treatments until the V8 stage (eight visible leaf collars). New ridges were then built over the existing furrows. Grain yield was found to be higher in the SF and DF sown treatments than in a conventional ridge sown treatment (CR), especially in drought years. Switching sowing position from ridge to furrow could increase corn yield, directly, by improving soil moisture early in the growing season and, indirectly, by stimulating the growth of resource-capturing organs (e.g., leaves and roots). This simple and efficient approach to crop production in semiarid climates may be practical for the management of numerous agricultural systems, particularly those that are resource-limited, with greater vulnerability to the effects of global climate change. |
| Keywords: | Ridge sown system Shallow furrow sown system Deep furrow sown system Corn yield parameters Soil water Semiarid Northeast China |
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