| Split-split plot design in randomize complete block (RCB) was conducted including 3 main plots as the types of fertilizer (chicken and cow manures and chemical fertilizer), 3 sub-plots as the rates of fertilizer (by 0, 500, 1000 kg/rai for organic manure and by 0, 25 and 50 kg/rai for chemical fertilizer), 3 sub-sub plot as sweet corn varieties (Insee 2, Sugar 75, and KSSC 604) The experiments were conducted 4 planting dates (2 planting dates by 2 seasons). The results showed that four planting dates were significant differences for both yield and quality of sweet corn. On the other hand, there were not significant differences between the application of organic manures and chemical fertilizer. But, rates of fertilizer application were significant for... |
