EFFECTS OF VERMICOMPOST COMBINED WITH CHEMICAL FERTILIZER APPLICATION ON GROWTH AND YIELD OF SWEET WAXY CORN
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Vermicompost is rich in organic matter and nutrient elements which are essential for plant growth. Therefore, using vermicompost combined with reducing the rate of chemical fertilizer may promote plant growth as a result improve yield of sweet waxy corn. This study aimed to investigate the effect of vermicompost combined with chemical fertilizer application on growth and yield of waxy corn. The study was performed in a randomized complete block design (RCBD) with four replications. Six treatments consist of 1) chemical fertilizer at the rate 25 kg/Rai-1 (control) 2) Vermicompost at the rate 3 t/Rai-1 3) Vermicompost at the rate 1 t/Rai-1 + chemical fertilizer at the rate 12.5 kg/Rai-1 4) Vermicompost at the rate 2 t/Rai-1 + chemical fertilizer at the rate 12.5 kg/Rai-1 5) Vermicompost at the rate 3 t/Rai-1 + chemical fertilizer at the rate 12.5 kg/Rai-1 and 6) Vermicompost at the rate 4 t/Rai-1 + chemical fertilizer at the rate 12.5 kg/Rai-1. The result revealed that the application of vermicompost combined with reduced chemical fertilizer (T3-T6) showed it was not significantly different between chemical fertilizer for SPAD chlorophyll meter reading and plant height. Furthermore, there was no significant difference between vermicompost integrated with chemical fertilizer and chemical fertilizer for fresh ear yield, excepting T4. The results indicated that application of vermicompost at the rate 1 t/Rai-1 + chemical fertilizer at the rate 12.5 kg/Rai-1 could be recommended for farmer due to contributed growth and yield of waxy corn and resulted in yield potential equal to chemical fertilizer application at the rate of 25 kg/Rai-1 (recommended rate)
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References
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