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HAP (98.84 and 143.02 %) > HAS (98.04 and 84.31 %) respectively. While, thesis order with different added Fe rates were HAC (114.35 and 217.88 %) > HAP (108.82 and 148.23 %) > HAS (101.06 and 76.99 %) for shoots and roots dry matter yields, respectively. In addition, increasing application rates of HA and Ca or Fe were associated by an increases of Ca and Fe uptake by both shoots and roots. The found order of the used HA on the increase of Ca and Fe uptake by shoots and roots of sorghum plants was: HAC > HAP > HAS. Moreover, the uptake of Ca and Fe by shoots was higher than that uptake by roots. On the other hand, increasing application rates of Ca and Fe decreased their utilization rate by sorghum plants. While, increasing application rates of HA were associated by an increase in the utilization rate of Ca and Fe by sorghum plants. Based on the obtained data, may be concluded that the fertilization program of sorghum plants must be include applications of HA especially HAC with Ca and Fe to obtained high quantity and quality of sorghum plants. Also, organic amendments must be used to increase Ca and Fe fertilizers efficiency.]]>
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p. 325−335
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p. 337−357
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p. 359−372
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p. 373−382
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