Source and rates of starter fertilizer for irrigation lowland rice on Aluvial soil
2000
Burbey | Ramainas | Sahar, A. (Balai Pengkajian Teknologi Pertanian, Sukarami (Indonesia))
Field experiment were conducted at farmers field Koto Panjang, Padang (West Sumatra) in wet season (WS) 1997/1998. Ten treatments were arranged in Randomized Completely Bock Design with four replications. The treatments consist of: 1. without starter fertilizers, 2. starter with 1 percent of ANP (Ammonium nitrate phosphate), 3. starter with 2 percent ANP, 4. starter with 4 percent ANP, 5. starter with 1 percent NPK (Nitrophoska), 6. starter with 2 percent NPK, 7. starter with 4 percent NPK, 8. starter with 1 percent NPK plus (Nitrophoska Plus), 9. starter with 2 percent NPK Plus, and 10. starter with 4 percent NPK PLus. NP, NPK, and NPK Plus fertilizers were dissolved in water and mud was added and stirred were dissolved in water and mud was added and stirred until a sticky paste was formed (approximately 100, 200, and 400 g of fertilizers in 9.9, 9.8, and 9.6 kg of paste for treatments). Seedlings were dipped until the roots were coated with the paste and then transplanted. For treatment without starter fertilizer, 200 kg Urea + 100 kg SP-36 + 50 kg KCl per hectare were applied, and for treatment with starter fertilizer, we applied Urea at 150 kg/ha. Soil pH was 5.7, organic matter 3.4 percent, N-total 0.31 percent, and available P 143.6 ppm. Result showed that source and rates of starter fertilizer significantly affected yield components and grain yield. The highest grain yield was found with application of 2 percent NPK Plus, but was not significantly different to that of 2 percent ANP, and NPK fertilizer treatments
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