Volume 1 No. 1 July – Septermber 1979

Ecology of Mosquitos in a Philippine Community

Paciencia P. Milan ABSTRACT The mosquito fauna of the Visayas State College of Agriculture, Baybay, Leyte was assessed in nine survey stations. In the eight-month survey, 25 species belonging to eight genera were identified. A total of 1,539 mosquitoes were collected; Aedes albopictus was the most abundant and prevalent species. Armigeres and Toxorhynchites were abundant …

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Biology and Feeding Preference of Tobacco Budworm, Helicoverpa assulta (Guenee)

L.B. de Pedro and B. Morallo-Rejesus ABSTRACT The mean life cycle of tobacco budwom, Helicoverpa assulta (Guenee), reared in the laboratory on artificial diet is 48 days. Copulation started three to four days after emergence. Oviposition started one day after mating with peaks on the fifth to seventh day. A female can lay an average …

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Survey and Identification of Plant Parasitic Nematodes Associated with Sweet Potato and Cassava

Ruben M. Gapasin ABSTRACT A survey of plant parasitic nematodes associated with sweet potato and cassava was conducted during the dry and rainy seasons of 1977 in 30 municipalities in two provinces of Leyte, Philippines. A total of 430 and 275 soil samples were gathered from sweet potato and cassava fields, respectively. Thirteen genera and …

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Effect of Defoliation, Runner Removal, and Fertilization on Tuber Yield of Taro

Sergio E. Abit and Arturo C. Alferez ABSTRACT Three degrees of defoliation (light, medium, and heavy), removal and non-removal of runners and three levels of complete fertilizers were studied on taro cv. Kalpao under lowland conditions. Light defoliation treatment did not affect the leaf area index but increased plant height at maturity, size of tubers, …

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Mass Media Habits of Rural People in a Philippine Municipality

G.T Sadsad ABSTRACT Two-hundred-fifty rural household members from Lucban, Quezon, Philippines were interviewed to determine their mass media habits, the relationship between selected demographic characteristics and their mass media habits, their attitudes towards the mass media and, on the basis of the findings, draw out guidelines for reaching rural people through the mass media more …

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Behavior and Growth of Pigs in Group Pens Under Different Feeding Systems

Teodulo O. Milleza and Teodoro A. Abilay ABSTRACT Five different feeding systems were tested on growing-finishing pigs. Behavior patterns on lying down, nibbling, drinking, urinating, defecating, walking, and eating were observed. Production traits such as weight gain and feed efficiency were recorded up to 18 weeks. Only two behavioral patterns were significantly affected by the …

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Deep-Bin Drying Characteristics of Unshelled Peanuts

Nonilon T. Bulilan and Ernesto P. Lozada ABSTRACT Unshelled peanuts were loaded in a deep-bin dryer at a maximum depth of 182.9 cm. The variations in the temperature and moisture content (M.C.) of unshelled peanuts dried at three drying air temperatures and two air flow rates were studied. Large temperature and M.C. gradients were observed …

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Copra Drying. I. Comparison Between the Recommended Practice and Farmer’s Practice of Splitted-Nut Arrangement Before Dying

Ly, Tung and Edilberto A. Hinay ABSTRACT Experiment was conducted to compare the recommended practice (RP) of arranging splitted nuts on drying platform before drying with farmers’ practice (FP) in terms of rate and uniformity in moisture reduction of copra. Results indicate that FP is better than RP. Follow-up studies are underway./p> Annals of Tropical …

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Sweet Potato as a Culture Medium Ingredient for Sclerotium rolfsii Sacc.

Dionisia M. Trigo and M.K. Palomar ABSTRACT Suitability of sweet potato as a culture medium ingredient for Sclerotium rolfsii Sacc. was studied. S. rolfsii grew in the culture media where sweet potato was used as a substitute for white potato in the preparation of potato-dextrose agar (PDA). The fungus on PDA produced profuse, aerial, and …

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