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The Different Viewpoint of Fertilizer Usage for Rice Production |
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| รหัสดีโอไอ | |
| Creator | Pisit Promnart |
| Title | The Different Viewpoint of Fertilizer Usage for Rice Production |
| Publisher | Department of Agriculture |
| Publication Year | 2544 |
| Journal Title | Thai Agricultural Research Journal |
| Journal Vol. | 19 |
| Journal No. | 3 |
| Page no. | 236-245 |
| Keyword | nutrient function, nitrogen, phosphorus, potassium, rice, increasing yield |
| URL Website | https://at.doa.go.th/journal |
| Website title | Thai Agricultural Research Journal |
| ISSN | 0125-8389 |
| Abstract | Rice seed contains 1.1% N, 0.20% P and 0.29 K. Rice straw contains 0.65% N, 0.10% P and 1.4% K. Traditional rice variety yields comparatively low 160-320 kg/rai. Natural supply of N are microorganism activities, rain water, river silt and decomposition of orranic matter. P enhances tillering and development of roots. Natural supply of K are from the weathering of soil parent materials and irrigation water. Potassium involves starch and sugar translocation, enhances amount of chlorophyll. The expected yield of 800-1,200 kg/rai need 12.8-24.0 kg N/rai and 8.0-10.0 kg K/rai. Recommendation of fertilizer application in sandy soil (16-16-8 + 46-0-0) may be worng since the amount of K may be lower than it is needed. Recommendation of application time as basal may also be worng because rice need K mostly for starch and sugar translocation to seeds. |
