Response of aromatic and non-aromatic rice on organic and inorganic fertilization
2017
Baradi, M .A.U. | Magno, M.F.A. | Solero, J.M. | Ancheta, R.G. | Romero, M.V. | Cruz, R.T. | Regalado, M.J.C.
Field experiments were conducted to study the effects of different fertilizers (control or no fertilizer, indigenous nitrogen supply (INS), indigenous phosphorus supply (IPS), indigenous potassium supply (IKS), LCC-based 1, LCC-based 2, rice straw, and chicken manure) on the agronomic characters of three rice varieties (Burdagol-Laguna type, a modern aromatic variety; Gal-ong, a pigmented aromatic traditional variety; and PSB Rc 82, a modern non-aromatic variety). The study was conducted during the dry and wet seasons of 2014 and 2015 in irrigated lowland ecosystem. The application of higher N levels using inorganic fertilizers (INS, IKS, LCC-based 1, LCC-based 2) gave the highest yields in both Burdagol (4.63-5.44 t/ha) and PSB Rc 82 (4.58-5.16 t/ha). This can be attributed to the high number of productive tillers and number of filled grains per panicle. Gal-ong gave the lowest yield (2.40 t/ha) due to its poor tillering ability although it produced the highest number of filled grains per panicle. The yield and number of filled grains per panicle of all the three varieties were significantly higher during the wet season (WS) than during dry season (DS). This may be due to the availability of rainfall or more water during the wet season. Gal-ong, which is traditional aromatic variety from Kibungan, Benguet in the Cordillera Administrative Region, Philippines can be planted in the irrigated lowland rice ecosystem.
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