Response of corn to nitrogen fertilizer and green manure management.
1995
Balisi A.A.
Results of the study revealed that Sesbania rostrata L. as intercrop of corn whether inoculated or uninoculated was inadequate to supply the N needs of corn for maximum yield. Inorganic N application at 75 percent of the recommended rate of N + 20 kilograms S. rostrata L. per hectare was necessary to produce high LAI [leaf area index], CGR [ crop growth rate], HI [harvest index] percent big seeds, vigor index, yield per hectare and net income. Incorporating S. rostrata L. as green manure intercrop of corn by uprooting and spreading at the base of the plant then plowed under by hilling-up showed superior performance over slicing the S. rostrata L. then plowed under hilling-up and directly plowing under S. rostrata L. by hilling up in terms of yield per hectare but not net income. Although S. rostrata L. as green manure intercrop of corn reduced weeds at the early stage of growth, weeding the corn plant exhibited higher corn yield and net income by 11.88 percent and 18.67 percent, respectively, than unweeded treatment. N yield of S. rostrata L. was not affected by population density. However, it was observed that seed inoculation and stem inoculation, 14 DAS of Sesbania rostrata L. increased the N yield of the green manure.
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