Management strategies for rice under lowland rainfed condition
| dc.contributor.author | Alejandre M. Bernarte | |
| dc.date.accessioned | 2025-10-22T08:02:07Z | |
| dc.date.available | 2025-10-22T08:02:07Z | |
| dc.date.issued | 1993 | |
| dc.description.abstract | The agronomic response of rice to various fertilizer levels, seedling ages and seedling rates was investigated during the dry season of 1992 at the lowland rainfed area of the Itawes National Agricultural and Technical School, Tuao, Cagayan. The area is clay loan with a pH of 6.0. The soil contains 1.5% organic matter, 6 ppm, available phosphorus and 60 ppm, available potassium. The treatment were composed of five levels of fertilizer (0-0-0, 50-40-40, 100-40-40, 150-4040 and 200-4040 kg NPK/ha), three seedling ages (30, 40 and 50 days old) and two seedling rates (4 and 6 seedlings per hill). The experiment was laid out in split-split plot arranged in Randomized Complete Block Design. Most of the agronomic characteristics of rice were favored by the application of 150-40-40 kg NPK/ha. Plants fertilized with 150-40-40 kg NPK/ha produced the highest grain yield considerably due to heavier grains and lesser unproductive tillers. Plants transplanted at 50 days old produced the highest grain yield due to more productive tillers and lesser unfilled grains. Moreover, grain yield was significantly higher in plants transplanted at six seedlings/hill due to more productive tillers and lesser unfilled grains. The combination of fertilizer level, 150-40-40 kg NPK/ha, seedling age of 50 days old and six seedlings per hill indicated better effect in grain yield although most of the yield components were not significantly affected by their combined effects. The nitrogen content of the straw increased considerably with the application of 200-40-40 kg NPK/ha. However, the level of phosphorus in the soil decreased significantly with this level of fertilizer application. Plots planted with 50 days old seedlings had higher concentration of nitrogen but lower concentration of phosphorus. | |
| dc.identifier.uri | http://granarium.clsu.edu.ph/handle/123456789/804 | |
| dc.language.iso | en | |
| dc.relation.supervisor | LUN G. MATEO | |
| dc.title | Management strategies for rice under lowland rainfed condition | |
| dc.type | Thesis |