https://hdl.handle.net/20.500.14353/15 2026-04-23T13:38:43Z 2026-04-23T13:38:43Z Gabinete, Greta Peñaranda, Hector Gutierrrez, Benjamin Buresh, Roland https://hdl.handle.net/20.500.14353/160 2023-03-04T08:23:57Z 2012-06-01T00:00:00Z

Development of site-specific nutrient management (SSNM) recommendations for irrigated rice in Region VI (Capiz, Aklan, and Antique) Gabinete, Greta; Peñaranda, Hector; Gutierrrez, Benjamin; Buresh, Roland Site-specific nutrient management (SSNM) is a plant-need-based approach for optimized application of nitrogen, phosphorus, and potassium fertilizers. This study developed and evaluated SSNM recommendations for irrigated rice in Aklan, Antique, and Capiz. Field trials using the nutrient omission plot technique provided information to calibrate Nutrient Manager for Rice, a computer-based decision tool. Additional field trials compared SSNM-based fertilizer recommendations of Nutrient Manager with farmer’s fertilizer practices. Measured soil properties were not well related to rice yields measured in nutrient omission plots suggesting soil properties are not good predictors of nutrient supply in rice soils. Relationships of yield in nutrient omission plots with yield in full fertilized plots were comparable to relationships from other regions of the Philippines already used in Nutrient Manager. This provides confidence that Nutrient Manager is well adapted for Region 6. Fertilizer management based on Nutrient Manager increased yield by 370 kg per hectare per season. Results suggest an increased income of PhP 4500 per hectare per season is a realistic target with Nutrient Manager. When factors other than nutrients – such as pests, diseases, or poor crop management – limit rice yield, improved nutrient management should be combined with practices to overcome these constraints.

2012-06-01T00:00:00Z Jusayan, Shirley R. Mandadero, Lorna A. Magno, Ricky M. Arellano, Elvira https://hdl.handle.net/20.500.14353/221 2023-06-26T02:15:39Z 2012-06-01T00:00:00Z

Initial impact of certificate program for non-specialists teachers in Chemistry: Implications to reforms in teachers’ continuing professional development Jusayan, Shirley R.; Mandadero, Lorna A.; Magno, Ricky M.; Arellano, Elvira This study examined the competencies and capabilities of teachers who are non-majors in Chemistry after attending the Certificate Program of two terms which. ran for 6 weeks for each term. The course content covered among others the least learned content topics and processes based on the results of the 2005 National Achievement Test. The delivery of the course was an integration of content, strategies, and assessment. The use, care, and improvisation of equipment and learning support materials were included. Specifically, this study explored the capabilities of teacher participants in terms of increased content knowledge, enhanced competence in teaching, and assessment of learning, and continued professional enhancement. The participants-respondents of the study were trained chemistry teachers, their immediate supervisors, and their students. Findings of the study showed that teachers gained significantly in terms of content knowledge from the training. The content knowledge was, to a great extent, retained by the teacher¬ participants as they actually conduct research investigatory projects, and hands-on laboratory activities in their classes. Further, the participants showed improved classroom management skills, teaching, and assessment skills. Results also revealed that trained teachers enhanced their ability in conducting laboratory activities using improvised materials and equipment. They were also able to assess student learning by using a variety of ways and were able to evaluate students ‘performance through authentic means. Implications of this study are discussed with respect to areas or competencies that need to be developed further among chemistry teachers in the local and national contexts of educational reforms.

2012-06-01T00:00:00Z