Volume 15, Issue 55 (spring 2011)
jwss 2011, 15(55): 209-218 |
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F. Salehi, M. J. Bahrani, S. A. Kazemaini, H. Pakniyat, N. A. Karimian. Effects of Wheat Residue and Nitrogen Fertilizer Rate on Some Soil Properties in Common Bean Cultivation. jwss 2011; 15 (55) :209-218
URL: http://jstnar.iut.ac.ir/article-1-1557-en.html
URL: http://jstnar.iut.ac.ir/article-1-1557-en.html
, foroud_salehi@yahoo.com
Abstract: (39821 Views)
Crop residues are beneficial substances that can bring about important changes in soil biological, chemical and physical properties and can also increase or stabilize crops yield. A field experiment was carried out at Research Station of College of Agriculture, Shiraz University, Shiraz, Iran, to determine the effects of wheat (Triticum aestivum L.) residue rates in combination with N levels on some soil properties in common bean (Phaseolus vulgaris L.) cultivation for two years (2008-2009). The experiment was conducted as split split-plot arranged in a completely randomized blocks design with three replications. Treatments were two red bean cultivars as main plots, N levels (0, 34.5, 69, and 103.5 kg ha-1) as sub-plots and residue rates (0, 25, 50 and 75%) as sub sub-plots. The results showed that application of crop residues significantly increased soil organic carbon, N, K, and P contents. Heavy crop residue (75%) application had no effects on these soil properties. Thus, retaining 50% crop residue was optimum for proper soil quality. Increased N application increased soil N, decreased P and K contents, and had no effects on organic carbon.
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