|
Influence of N, P, K and Mg on Yield of Oil Palm Grown on Kohong Soil Series |
|---|---|
| รหัสดีโอไอ | |
| Creator | Sunee Nithedpattarapong |
| Title | Influence of N, P, K and Mg on Yield of Oil Palm Grown on Kohong Soil Series |
| Contributor | Surakitti Srikul, Chai Korawis, Jumpen Onthong |
| Publisher | Department of Agriculture |
| Publication Year | 2538 |
| Journal Title | Thai Agricultural Research Journal |
| Journal Vol. | 13 |
| Journal No. | 3 |
| Page no. | 164-174 |
| Keyword | oil palm, yield, nitrogen, phosphorus, potassium, magnesium |
| URL Website | https://at.doa.go.th/journal |
| Website title | Thai Agricultural Research Journal |
| ISSN | 0125-8389 |
| Abstract | A study on the relationship between N,P, K and Mg as fertilizers with yield was conducted in oil palm (6-10 year old) planted under Kohong soil series at Surat Thani Horticulture Research Centre. The palms were transplanted in 1985. The design of the experiment was RCB with 5 replications and 10 treatments which tested each 4 levels of ammonium sulfate (N), triple superphosphate (P) and potassium chloride (K) fertilizer application and 3 levels of kiesertie (Mg). The investigation revealed that yield was increased 66% compared with no fertilizer plot. Moreover, fertilizer at the rate of 3-1-3 and 1.5-1-3-0.5 kg/plam/year of ammonium sulfate, triple superphosphate and potassium chloride gave the highest yield (2.80 and 2.72 tons/rai/year), respectively among all treatments.rnThe investigation also found a significant relationship between leaf N and K nutrient concentrations and yield of oil palm. The coefficients of determination values (R2) were 0.7627 and 0.7253 for N and K, respectively. In addition, from the calculation the optimum concentrations of N and K in leaf were 2.66 and 0.975%, respectively. These values will be recommended for oil palm growing in sandy loam soils under east coast of southern enviromental conditions. |
