文章基本信息

标题：Effect of varied soil matric potentials on the zinc use efficiency of soybean genotypes (Glycine Max L.) under the calcareous soil
本地全文：下载
作者：M. Ruuml ; ştuuml ; Karaman 等
期刊名称：Scientific Research and Essays
印刷版ISSN：1992-2248
出版年度：2013
卷号：8
期号：7
页码：304-308
DOI：10.5897/SRE12.705
语种：English
出版社：Academic Journals
摘要：Lime content of soils is one of the most important factors limiting zinc (Zn) availability to crops. It is also known that there may be a close relationship between soil moisture levels and Zn use efficiency of plant species. Thus, further studies would be needed concerning these relationships under the varied soils. In this study, a pot experiment was conducted using calcareous soil by growing different soybean genotypes of A-3735, A-3127, SA-88, S-4340 and Ilisulu-20. Zinc fertilizer at the levels of 0, 5, 10 µg Zn g-1 as ZnSO4.7H2O was applied to the soil. Pots were irrigated based on increasing soil matric potentials of -65 kPa (I1), -45 kPa (I2) and -25 kPa (I3), respectively. After harvest, plant dry matter yield was recorded, and Zn concentrations in tops of soybean plants were determined. Dry matter yield, Zn content and accumulations significantly (P<0.01) differed among soybean genotypes under the Zn treatments. Soil moisture stress significantly decreased physiological responses of soybean genotypes to Zn treatments. Significant differences also existed among the soybean genotypes in their ability to accumulate Zn in leaves. The results have also clearly revealed that detailed georeferenced maps would be useful to manage the relationship between site specific soil moisture levels and Zn use efficiency of crops, especially on calcareous soils.
关键词：Soybean genotypes; soil matric potential; zinc sulphate