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A study on the invertebrate and vertebrate biodiversity of the Jalaur River system of Iloilo, Panay, Philippines
(Silliman University, 2010-01)
This study, conducted from July to November 2009, aimed to explore the diversity of large aquatic and terrestrial organisms found in microhabitats along the Jalaur River System on Panay Island, Philippines. We adopted a purposive sampling approach using several collection techniques appropriate to particular taxa or group of taxa. These include the netting method for birds and bats, cruising and transect methods for herpetofauna, gill-net fishing for aquatic vertebrates and quadrat method for macro- invertebrates. Data were analyzed for species richness (S) and relative abundance, and for fish, catch per unit effort (CPUE) and income per unit effort (IPUE). Three areas, representing the upper, middle, and lower portions of the river, served as the sampling sites. The results of the study show that there are at least 106 species of terrestrial vertebrates and about 71 species of aquatic vertebrates and macro-invertebrates in the area. These include 22 endemic species of terrestrial vertebrates, a new Philippine record of the goby Trypauchenopsis intermedia and an undescribed goby of the genus Rhinogobius. Of the 51 species of fish observed in the area, 36 species (70.59%) are known to inhabit marine and brackish water habitats, while 14 species (27.45%) inhabit freshwater. Only one catadromous species of fish, Anguilla marmorata, was observed in the area. The study also identified nine exotic species of fish and two species of freshwater mollusks are harvested in the area. The terrestrial vertebrate species diversity appears to be depauperate....
Feasibility of biomass briquette production from municipal waste streams by integrating the informal sector in the Philippines
(Molecular Diversity Preservation International (MDPI), 2017-02-24)
A technical and socio-economic feasibility study of biomass briquette production was performed in Iloilo City, Philippines, by integrating a registered group of the informal sector. The study has shown that the simulated ...
Job change and self-control of waste pickers: Evidence from a field experiment in the Philippines
(Business Perspectives, 2018-06-15)
Environmental policies may have a negative side effect on employment, often in a specific industry in the short run. Workers in regulated industries can be affected by losses in job-specific human capital. The informal ...
Distinct morphological features of traditional chickens (Gallus gallus domesticus L.) in Western Visayas, Philippines
(Cambridge University Press, 2012-12)
The local or traditional types of chicken found in the Philippines are not well described and no comprehensive information is available and as yet not described as breeds. Among the regions in the Philippines, Western ...
How to promote a job change of dumpsite waste pickers? Evidence from a field experiment in the Philippines
(2014-05)
Switching a waste disposal policy from open dumping to sanitary landfilling requires a job change of waste pickers. We conducted a field experiment at Iloilo in the Philippines which offers dumpsite waste pickers a new job ...
Improving smallholder dry season vegetable production through increased water productivity with low cost drip irrigation technology in Cambodia
(International Society for Horticultural Science, 2011-12-31)
In rainfed cropping systems limited water supply is a major constraint for increased crop production during the dry season. The use of affordable drip irrigation systems can increase crop yield, water use efficiency, and labor productivity in dry season vegetable production. Farmer participatory research was conducted in Cambodia during the 2008 dry season to evaluate the performance and benefits of a low-cost drip irrigation system for improving small-scale vegetable production. The effect of integrating improved soil nutrient management through fertilizer deep placement on crop yield and economic returns were determined for selected vegetable crops. Compared with traditional practice of hand-watering, drip irrigation increased yield of chili (Capsicum annuum), cucumber (Cucumis sativus), and eggplant (Solanum melongena) by almost 50%, but reduced average net income by 25%. Drip irrigation decreased water use by 33%, and increased water use efficiency by 63% and labor productivity by 74%. The use of fertilizer deep placement with drip irrigation resulted in higher yield (18%) compared with commercial NPK fertilizer irrespective of irrigation methods. Significant response was shown in yard-long bean (Vigna unguiculata var. sesquipedales) with 35% yield increase and 50% increase in net income. Under drip irrigation the use of fertilizer deep placement reduced water use by 48%, increased water use efficiency by 70% and labor productivity by 78%. This study demonstrated the potential benefit of low-cost drip irrigation and fertilizer deep placement for improving smallholder vegetable production in Cambodia during the dry season through higher yield, increased water use efficiency, and higher economic returns and labor productivity compared with farmers’ traditional practice of hand-watering and fertilizer application....
Progress in research and development of moringa at the World Vegetable Center
(International Society for Horticultural Science, 2017-05-09)
The World Vegetable Center has a collection of over 50 moringa accessions, majority of which belong to M. oleifera. The planting of this species in southern Taiwan started some 35 years ago. The World Vegetable Center initiated research on moringa in 2001. A small project was established to introduce and evaluate a number of moringa accessions collected from Asia, Africa and USA. The accessions were evaluated for growth characteristics and horticultural traits, aiming at high leaf production and nutritional value. A total of 50 accessions were collected and from this collection, seeds of 42 accessions representing four species (Moringa oleifera, M. stenopetala, M. drouhardii and M. peregrina) were germinated and transplanted to the field for seed multiplication, characterization and evaluation. Twenty-two accessions produced sufficient seeds for replicated evaluation trials and seed distribution. Ten promising accessions were selected and evaluated in replicated trials over a two-year period. Among those, three accessions showed fresh young shoot yield averaging 20-40 t ha<sup>-1</sup>. The effects of leaf type (age), harvest season and variety on nutrient content were investigated as a component of this study. Results showed no significant differences for most nutrient contents among accessions. Mature leaves are more nutritious than young leaves or shoots. Nutrient content varied with harvest season. Calcium, vitamins A and E were higher in hot-wet season in southern Taiwan than during winter, whereas Fe and vitamin C were higher in cool-dry season than in summer. Subsequent field evaluation studies revealed the variability of Moringa accessions in terms of horticultural traits. The accessions varied significantly in plant height, stem diameter, leaf and stem biomass, number of side shoots, tolerance to flooding and survival after heavy rainfall and strong wind brought about by tropical typhoons. Superior and promising accessions are being multiplied to meet the increasing demand for seed and planting materials of moringa. During the last ten years, the World Vegetable Center has distributed moringa germplasm to universities, government organizations, non-governmental organizations and private companies in 15 countries. The Philippines, Malaysia, Thailand, Germany, Vietnam, Egypt, The Netherlands, and Pakistan were the top recipient countries. Moringa is also distributed in seed kits for home garden projects in Asia and Africa....
Horticultural characterization of AVRDC moringa germplasm in the Philippines and Taiwan
(International Society for Horticultural Science, 2015-12-06)
The major objective of this study was to evaluate a subset of the AVRDC Moringa oleifera germplasm collection for important horticultural traits in the Philippines and Taiwan. The 18 AVRDC moringa accessions originated from India, Laos, Philippines, Taiwan, Tanzania, Thailand and USA. Three-month-old seedlings were transplanted onto single-row raised beds spaced 1.5 m apart. Plants were arranged in a randomized block design with three replications. Data were collected on plant height, stem diameter, number of branches, canopy width, fresh and dry biomass (stems and leaves), days to flowering, and pod/seed yield. In Taiwan, one month after transplanting four accessions attained a plant height of above 1 m. Number of side branches ranged from 9 to 14 per plant. Differences in plant height and stem diameter were significant at 70 days after transplanting (DAT). Tallest plants (2.9 m) were observed in LSQUOMo-35RSQUO from Tanzania while LSQUOMo-8RSQUO from Thailand produced the largest stem diameter (36 cm). Leaf fresh weight and dry biomass was highest (15.8 and 9.2 t ha<sup>-1</sup>, respectively) for LSQUOMo-35RSQUO at 70 DAT. Survival and stand count decreased after two strong typhoons and severe flooding in 2009 and 2010. In the Philippines, accessions LSQUOMo-2RSQUO (USA) and LSQUOMo-40RSQUO (India) produced the tallest plants 28 weeks after second pruning. Mean stem diameter ranged from 3.5 cm (LSQUOMo-34RSQUO) to 8.5 cm (LSQUOMo-4RSQUO). LSQUOMo-38RSQUO (Thailand) produced the highest number of branches. Two accessions from Thailand (LSQUOMo-4RSQUO and LSQUOMo-14RSQUO) resulted in the highest leaf fresh weight, which exceeded 20 t ha<sup>-1</sup> from two prunings, while LSQUOMo-29RSQUO (India) produced the highest dry leaf biomass. Most accessions tolerated waterlogged conditions with 60-100% plant survival stand count. The results indicate that there are moringa accessions with promising horticultural traits for the high rainfall climate of Southeast Asia....
Performance of vegetable soybean cultivars under organic crop management system
(AVRDC – The World Vegetable Center, 2013)
The objective of this study was to evaluate growth and yield performance of vegetable soybean (Glycine max) cultivars under organic crop management practices. Four cultivars: Kaohsiung No. 6 (KS 6), Kaohsiung No. 9 (KS 9), Tainan ASVEG No. 2 (TNAV 2), and Japan aromatic flavor variety Cha-mame were grown in spring and fall seasons in organic experimental farm at AVRDC – The World Vegetable Center in 2006-2007. Organic crop management practices consisted of rhizobium seed inoculation, application of balanced solid and liquid organic fertilizer, integrated pest management involving sex pheromone, yellow and blue sticky paper traps, and bio-pesticide sprays (Neem and Bt); and bio-agents (Trichoderma spp., Bacillus subtilis and. Streptomyces spp. for fungal disease management. Yield performance showed that TNAV 2 produced the highest total pod yield, followed by KS 9 and Cha-mame. However, differences were not significant. TNAV 2 matured late whereas Cha-mame matured early. Over three growing seasons, Cha-mame produced the highest graded pod yield, followed by TNAV 2 and KS 9. This study indicates that both vegetable soybean cultivars Cha-mame and TNAV 2 have greater yield potential than other cultivars when produced under organic farming system....
Testing of briquette production for household use by informal waste workers at the Calajunan dumpsite in Iloilo City, Philippines
(2011)
Three recommended mixtures for briquette production were tested by eight identified informal waste workers within a 10-day briquette production test at the Calajunan dumpsite in Iloilo City, Philippines. The test revealed ...