Irrigation intervals and potassium fertilization in relation to sorghum production in Fayoum calcareous soil
2009
El-Basioni, S.M. | Hassan, H.M. | Drar, R.A.
A field experiment was conducted during the summer season 2008 in the calcareous soil of Kom Oshim Farm, Fayoum Governorate to investigate the effect of irrigation intervals (2- or 3week) and applied K levels (0, 24, 48 and 72 kg K2O/fed) in a split plot design on sorghum grain yield (cv. Dorado), 100 grain weight and grain content of N, P and K. Also, available K in soil was determined after harvest. The obtained results could be summarized as follows: The 2-week irrigation interval had a significant positive effect on grain yield than that of 3-week one. For K application treatments, there was a significant difference in grain yield compared with control treatment. The irrigation intervals or applied K levels had no significant effect on 100 grain weight. The interaction between irrigation intervals and applied K levels has no significant effect on grain yield and 100 grain weight. Increasing applied K increased K content of sorghum grains and available K in soil after harvest while the irrigation intervals being with no effect. The values of N and P % in grains were almost the same for both studied variables.
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