Zinc fertilization in rice-wheat cropping system under upland calcareous soil |
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| Authors: | Ranjan Laik Santosh Kumar Singh Vipin Kumar S P Singh Arvind Shukla Nidhi |
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| Institution: | 1. Department of Soil Science, Dr. Rajendra Prasad Central Agricultural University, Samastipur, Bihar, India;2. Division of PCM, Indian Institute of Soil Science, Bhopal, India;3. Department of SMCA, Dr. Rajendra Prasad Central Agricultural University, Pusa, Samastipur, Bihar, India |
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| Abstract: | Zinc (Zn) fertilization is important for Zn crop biofortification as well as increasing yields, thus proper Zn recommendations for soil application is needed for Zn deficient soils. The effectiveness of Zn applications was evaluated in different combinations of rates (2.5, 5.0, 7.5, and 10.0?kg?ha?1 per year) and frequencies (initial, alternate, and every year) in rice (Oriza sativa L.) – wheat (Triticum aestivum L.) cropping system in a Zn-deficient upland calcareous soil in the fourth year. Zn applications to rice at 7.5 and 10?kg?ha?1 of alternate year and 5.0 to 10?kg?ha?1 of every year had the highest rice equivalent yield as compared to no-Zn treatment. Hence, Zn application to rice at 7.5?kg?ha?1 at alternate years is the lowest rate at which highest rice equivalent yield of rice-wheat cropping system can be obtained. |
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| Keywords: | Zn fertilization rice-wheat rotation Zn concentration Zn fractions DTPA-Zn |
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