Author name: admin

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

Volume 27 No. 2 July - December 2005 / By

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 »

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

Volume 27 No. 2 July - December 2005 / By

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 »

Biology of Coccinella transversalis Muls. (Coloeptera: Coccinellidae)

Volume 27 No. 2 July - December 2005 / By

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 »

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

Volume 27 No. 2 July - December 2005 / By

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 »

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

Volume 27 No. 2 July - December 2005 / By

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 »

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

Volume 27 No. 2 July - December 2005 / By

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 »

Production of acidophilus milk enriched with purees from colored sweetpotato (Ipomoea batatas L.) varieties

Volume 28 No. 1 January - June 2006 / By

Rodney H. Perez and Julie D. Tan a ABSTRACT Probiotics foods and drinks are becoming more popular nowadays. Probiotic foods are foods that contain health-promoting microorganisms. The beneficial effects of probiotics may be mediated by a direct antagonistic effect against specific groups of organisms, resulting in a decrease in their metabolism or by stimulation of …

Production of acidophilus milk enriched with purees from colored sweetpotato (Ipomoea batatas L.) varieties Read More »

Filipino consumer preferences for peanut butter

Volume 28 No. 1 January - June 2006 / By

F. C. F. Galvez1, L. S. Palomar2, M. L. Dl. Francisco1, A. O. Lustre3 and A. V. A. Resurrection4 ABSTRACT One-on-one interviews were conducted nationwide in different regions in the Philippines. A total of 387 households participated in the survey. Most households bought peanut butter at least once a month. Results indicated that sweetness, brand, …

Filipino consumer preferences for peanut butter Read More »

Biochemistry of postharvest spoilage of sweetpotato (Ipomoea batatas L.) 2. Comparison of cellulolytic enzyme production in cultures and fungi-infected sweetpotato tubers

Volume 28 No. 1 January - June 2006 / By

R. C. Ray ABSTRACT The study was conducted to determine the production in vitro and in vivo of cellulases by Botrydiplodia theobromae and Rhizopus oryzae. Isolates of these organisms were obtained from the postharvest decay of sweetpotato tubers. Results revealed that B. theobromae and R. oryzae which were isolated from postharvest spoilage of sweetpotato tubers …

Biochemistry of postharvest spoilage of sweetpotato (Ipomoea batatas L.) 2. Comparison of cellulolytic enzyme production in cultures and fungi-infected sweetpotato tubers Read More »

Community structure of arthropods in Agusan del Norte lowland ricefields

Volume 28 No. 1 January - June 2006 / By

Rowena P. Varela1, Lina T. Villacarlos2 ABSTRACT The structure of insect pests and natural enemies associated with white stem borer (Scirpophaga innota Walker) in the irrigated and rainfed lowland ricefields in Agusan del Norte was studied for two cropping seasons. Sweep net method was used to sample in the populations of the various arthropods. More …

Community structure of arthropods in Agusan del Norte lowland ricefields Read More »

Scroll to Top