Volume 27 No. 2 July – December 2005

Janice P. Susaya1 and Victor B. Asio1,2 ABSTRACT Phosphorus (P) is generally considered to be the most limiting mineral nutrient in tropical soils. This study was conducted to determine the amounts of P in various components of the rainforest ecosystem. Composite samples of rocks, soil, stream sediments, stream water. Rainwater, leaves of dominant vegetation, forest …

Status of phosphorus in the rain forest ecosystem of Mt. Pangasugan, Leyte, Philippines Read More »

Nadia P. Alfante and Teofanes A. Patindol ABSTRACT The study was conducted to characterize the wetlands located at Sitio Quinto Limbo and Tasakan in Lake Danao Natural Park, Ormoc City based on some physico-chemical parameters. The two wetlands are generally shallow. Salinity ranged from 0.3 to 0.5 ppt which is characteristic of an oligohaline wetland. …

Physical and chemical characteristics of two wetlands in Lake Danao Natural Park, Ormoc City Read More »

Brenda C. Balabarino and Ma. Juliet C. Ceniza ABSTRACT The biology of Coccinella transversalis reared on black bean aphid, Aphis craccivora was studied in the laboratory. The beetle passed through the egg, 4 larval instars, pupa and adult stages. The eggs were spindle-shaped and had an incubation of 2-3 days with an average of 2.85 …

Biology of Coccinella transversalis Muls. (Coloeptera: Coccinellidae) Read More »

M. Nedunchezhiyan and R. C. Ray ABSTRACT Climatic factors like temperature, relative humidity, rainfall, day length, and soil edaphic factors influence the growth and yield of a crop. The rate of dry matter accumulation remains faster at higher than lower temperature. However, high temperatures decrease the proportion of dry matter translocated to the tuber. Hence …

Effect of dates of sowing on dry matter production and partitioning in yam bean (Pachyrrhizus erosus (L) Urban) Read More »

Misael T. Diputado, Jr.1, Manolo B. Loreto, Jr.2 and Jonathan I. Mangmang2 ABSTRACT This study assessed the growth, yield and profitability of sweet pepper and pechay grown in a simple, locally designed re-circulating hydroponics system (RHS) provided with coarse river sand and coco-coir dust as aggregates at different ratios. The system consisted of 6 pans …

Evaluation of a simple re-circulating hydroponic system for sweet pepper (Capsicum annum L.) and pechay (Brassica napus L.) Read More »

Fe M. Gabunada1 and Agnes C. Rola2 ABSTRACT This study compared the knowledge levels between adoptors and non-adoptors of sustainable land-use management systems in Matalom, Leyte, investigate the influence of farmers knowledge and other factors on the extend of adoption of technologies, and identify implications that may enhance technology adoption. The sustainable land-use management systems …

Farmers’ knowledge and adoption of sustainable land-use management systems in Matalom, Leyte, Philippines Read More »