Yield and composition of soybeans as influenced by soil pH, phosphorus, zinc, and copper
Autor: | Malcolm E. Sumner, G. G. Payne, C. O. Plank |
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Rok vydání: | 1986 |
Předmět: | |
Zdroj: | Communications in Soil Science and Plant Analysis. 17:257-273 |
ISSN: | 1532-2416 0010-3624 |
Popis: | The absorption and utilization of most elements by plants are strongly influenced by factors other than elemental concentration in the soil solution such as soil pH, organic matter, CEC and interactions with other nutrients. This field study was conducted to determine the response of soybean cultivars with different tolerance to P induced growth disorders to applied P, Zn, and Cu at different soil pH levels. Both Wright (tolerant) and Hutton (sensitive) soybean cultivars showed a significant response to applied Zn. The greatest response was observed for Hutton although Wright had seed yields as great or greater than those for Hutton. Yield of both cultivars was significantly correlated with leaf Zn concentration and the P/Zn ratio. The highest yields for both cultivars were associated with leaf Zn concentrations of approximately 26 μg/g and P/Zn ratios of 115. Applied P did not affect yield or P absorption of either cultivar. Copper fertilization increased Cu concentration in plant tissue by 38% ... |
Databáze: | OpenAIRE |
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