Volume 10 No. 2 April – June 1988

Note: Effect of Sett Size on the Growth, Development and Yield of Taro

Selvano S. Dalion, Jose R. Pardales, Jr. and Mario E. Baliad ABSTRACT Size of planting material greatly affected the growth and development of taro. Most of the vegetative characters and man corm yield increased in values as sett size increased. A very strong positive correlation was observed between sett size, and fresh and dry weights …

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Note: A Comparison of the Pressure Chamber Apparatus and Shardakov Method in Determining Leaf Water Potential of Cassava and Soybean

Valerio C. Tanguilig ABSTRACT The efficiency of the Shardakov or dye mothod in measuring the leaf water potentials of cassava (Manihot esculent Crantz var. Hawaiian 4) and soybean (Glycine max [L.] Merr. var. Clark 63) was evaluated and compared with that of the pressure chamber measurements were made on whole leaves while Shardakov method measurements …

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Social and Economic Factor Associated with Farm Level Technology in Carabao Raising

Alicia S. Agarcio, Nerelito P. Pascual, Edgardo A. Pañares and Leonora M. Densing ABSTRACT The study dealt with the general characteristics of the respondents, existing management practices employed, some socio-economic factors associated with carabao raising, and the gap between the recommended and existing management practices in carabao raising in Iloilo, Bohol and Leyte. Generally, the …

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Designing a Participatory Media-Assisted Learning System for Small Lowland Rice Farmers

Monina M. Escalada ABSTRACT With the results of the baseline study as the basis for designing a learning system, a user-oriented media-assisted learning system was evolved. It consisted of a staggered farmers’ class with a lecture by an agronomist, dramatized audio tapes and discussion, informal talks between the agronomist and farmers, and periodic farm visits. …

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Effect of Azolla as Source of Nitrogen on the Growth and Yield of Pechay (Brassica napus L. var. chinensis)

Zenaida M. Cuevas, Rebecco M. Santiago and Elizabeth D. Briones ABSTRACT Plants applied with either azolla or inorganic fertilizer performed better than the unfertilized ones. Increasing the rate of azolla application from 120 to 210 kg N/ha correspondingly increased all the parameters measured and the net income during the first cropping. However in the second …

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Genetic Variation in a Wide Gene Base Population of Sweet Potato [Ipomoea batatas (L) Lam ]

Algerico M. Mariscal and Azucena L. Carpena ABSTRACT Design I mating system was used to estimate the components of genetic variation of sweet potato base population. Characters studied were total root yield, weight and number of marketable roots, total number of roots, fresh weight of wines, harvest index, scab rating and dry matter content of …

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Phenolics Involvement in Sweet Potato Resistance to Meloidogyne incognita and M. javanica

Ruben M. Gapasin, Rodrigo B. Valdez and Evelyn Mae T. Mendoza ABSTRACT The possible involvement of phenols in sweet potato resistance to root-knot nematode was shown by the reduced number of eggs hatched and high larval mortality of Meloidogyne incognita and M. javanica exposed to root extracts of the resistant cultivars even as low as …

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Host Influences on Epidemic Development of Peanut Leaf Spot Caused by Cercosporidium personatum (Berk. And Curt) Deighton

Rodolfo A. Paningbatan and Linda B. Mabesa ABSTRACT Based on one cycle of pathogenesis due to peanut leaf spot fungus, Cercosporidium personatum (Berk. and Curt) Deighton, resistant cultivars PI 259747 and EC 76446 (292) significantly prolonged the latent period of the disease by almost two times that of susceptible cultivar CES 101. This indicates 50% …

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