Rehabilitation of problem soils through environmental friendly technologies - II: role of sesbania (Sesbania aculeata) and gypsum
2006
Mirza, B. | Baig, M. | Sharif Zia, M.
The effect of sesbania green manure and gypsum application (0, 50, 75 and 100% of gypsum requirement) on rice Basmati 385 was investigated in a field study on a sodic soil at Sadhuke, Lahore, Pakistan. Sesbania was grown for two months and then incorporated into the soil as green manure. Gypsum was applied before the sowing of sesbania. Sesbania green manuring significantly increased the number of productive rice tillers and nonsignificantly paddy and straw yields (by 13.1 and 14.2%, respectively). Productive tillers, paddy and straw yields were significantly increased by gypsum application. Differences in paddy yield when 75 or 100% gypsum rates were applied were not significant, indicating thus that gypsum applied at low rates was just as effective as high rates. Green manuring significantly increased N utilization by both grain and straw but did not impact on P uptake. The application of gypsum significantly increased the N and P uptake; the differences between 100 and 75% gypsum requirement treatments were not significant, but were significantly higher than the 50% gypsum requirement rate.
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