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Effect of using Azolla (Azolla microphylla) in Combination with Nitrogen Fertilizer on Growth and Nutrient Content in Leaf of Oil Palm. |
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| รหัสดีโอไอ | |
| Creator | 1. Montree Pantu 2. Sirilak Kaewsuralikhit 3. Sarattana Sanoh 4. Krirkchai Dhanaraks 5. Praphan Prasertsak 6. Chitrlada Thongsodsaeng 7. Chayana Duangwichian 8. Kanyarat Champathong |
| Title | Effect of using Azolla (Azolla microphylla) in Combination with Nitrogen Fertilizer on Growth and Nutrient Content in Leaf of Oil Palm. |
| Publisher | Department of Agriculture |
| Publication Year | 2559 |
| Journal Title | THAI AGRICULTURAL RESEARCH JOURNAL |
| Journal Vol. | 34 |
| Journal No. | 3 |
| Page no. | 286 |
| Keyword | chemical fertilizer, azolla, Azolla microphylla, oil palm, ปุ๋ยเคมี, แหนแดง, ปาล์มน้ำมัน |
| ISSN | 1258389 |
| Abstract | The use of azolla as green manure corporated with chemical fertilizer was studiedin new oil palm in October 2011 to September 2013 at Nongsuea district, Pathumthaniprovince. Experimental design was Randomized Completely Block design with 4replications and 5 treatments 1) nitrogen fertilizer application rate recommendation (1N) 2)nitrogen fertilizer (recommendation rate) with azolla (1N + A) 3) nitrogen fertilizer 0.75time of recommendation rate with azolla (0.75N + A) 4) nitrogen fertilizer 0.50 time ofrecommendation rate with azolla (0.50N + A) 5) nitrogen fertilizer 0.25 time ofrecommendation rate with azolla (0.25N + A). At 28 months old of oil palm, resultsshowed that the combination of nitrogen fertilizer at recommendation rate with azollacaused the fastest growth in oil palm. The number of frond was 18.17 per 6 months, leafarea was 5.78 m2/plant, frond length was 327 cm2/plant and nitrogen content in leaf ata level sufficient for the growth of plant was 2.68 %. However, the growth of plants was not significantly different from application of nitrogen fertilizer at recommendation rate treatment. The number of frond was 17.41 per 6 months, leaf area was 5.54 m2/plant, frond lengthwas 316 cm2/plant and nitrogen content in leaf was 2.68 %. The combination ofnitrogen fertilizer 0.50 and 0.25 of recommendation rate with azolla caused the oil palm grow slower than other treatments and was not different from the control group. The number of frond was 16.10 and 15.25 per 6 months and nitrogen content in leaf was not enough for the growth of plant was 2.50 and 2.29 %. |
