Effect of IBA and fertilizer rates on the development of sweet corn's ear
1999
Somchai Glahan(King Mongkut's Institute of Technology Ladkrabang, Bangkok (Thailand). Faculty of Agricultural Technology. Dept. of Horticulture)
Study on effect of IBA and fertilizer rates on the development of sweet corn ear, statistical model was 5*4 factorial in completely randomized design consist of 20 treatment combination, factor A was IBA concentration 5 levels as 0, 100, 200, 300 and 500 ppm Factor B was fertilizer rate (15-15-15) 4 levels as 0, 30, 40, 50 gm/tree applied 3 times at the age of 20, 35 and 45 days after planting. The result showed that sweet corn's ear treat with IBA 200 ppm+fertilizer 50 grams gave the highest stem height at the mean of 283.33 centimeter and the lowest was IBA 100 ppm+fertilizer 0 grams with the mean of 233.67 centimeter. IBA 300 ppm+fertilizer 40 grams had the most ear fresh weight the second and the least were IBA 200 ppm+fertilizer 50 grams and IBA 0 ppm+fertilizer 0 grams at the mean of 281.01, 267.59 and 157.54 grams respectively. IBA 300 ppm+fertilizer 50 grams gave the longest ear circumference the second and the least were IBA 200 ppm+fertilizer 40 grams and IBA 0 ppm+fertilizer 0 grams with the mean of 17.57, 17.47 and 13.73 centimeter respectively, the statistical analysis showed that IBA 300 ppm+fertilizer 50 grams. Showed significantly with IBA 0 ppm+fertilizer 0 grams. The sweetness, IBA 100 ppm+fertilizer 30 grams had the highest TSS, the second was IBA 300 ppm+fertilizer 50 grams and the least were IBA 300 ppm+fertilizer 0 grams with the mean of 12.67, 12.33 and 10.33 brix respectively.
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