Advancing the Philippine mango industry: production of export-quality mangoes: Science and Technology based postharvest quality management adoption for mango in Regions 1, 2, 3, 4, 6, and 12

Date

2016

Abstract

The gains from the previous DOST-PCAARRD [Department of Science and Technology-Philippine Council for Agriculture, Aquatic, and Natural Resources Research and Development]funded projects on mango were promoted on wider coverage to expand the supply base of quality mangoes for the domestic and export markets through grower-clustering strategy involving a total of 17 clusters with 136 farmer members in Regions Regions 1 [Ilocos. Region], 2 [Cagayan Valley], 3 [Central Luzon], 4 [Southern Tagalog], 6 [Western Visayas] and 12 [Central Mindanao] [Philippines]. Competencies of the clusters were enhanced through trainings, seminars, field days and technology-demonstrations (total of 13) on Integrated Crop Management (ICM), Postharvest Quality Management (PQM) and Good Agricultural Practices (GAP). From the baseline data of 30% average recovery of export-grade mangoes, there was a slight increase in all regions in 2014 except in Region 12:SKSU. Highest recovery of 60-67% was obtained in Regions 1:PSU and 3:CLSU. The rest of the regions had 42-56% highest recovery. However, in 2015 (Year 3), there was decrease in the recovery of export-grade mangoes with most of the harvests categorized as local- or process-grade. The lowest recovery of export-grade mangoes was obtained in Region 12. Mangoes produced in the clusters in Regions 1:DMMSU [Don Mariano Marcos Memorial State University] and 4:UPLB [University of the Philippines Los Baños] were supplied to a Japan exporter because other than meeting the quality requirement, the mangoes also passed the maximum residue level imposed by the buyers. The causes of downgrading and rejection of mangoes are insect damage (thrips and cecid fly), and to preharvest disease caused by scab. Because mangoes were harvested at mature stage, a total soluble solids content at the ripe stage ranged from 16-18 deg Brix. Titratable acidity and pH did not vary among mangoes harvested in the different project sites. Storage temperature (ambient, 25 deg C or 13 deg C) likewise did not affect the physic-chemical composition of the fruits. The mangoes were acceptable to the sensory panelists regardless of the treatment and source. The wide variation in growing conditions in different regions particularly the occurrence of rain during fruit development and maturation rendered the mangoes susceptible to decay. Thus, even with appropriate preharvest fungicide sprays, decay still occurred after harvest. The conventional HWT 52-55 deg C for 10 minutes is recommended as a supplementary postharvest treatment. The rapid HWT of 59 deg C for one minute is suitable only when mangoes are produced during the dry, hot months where level of infection is low. MANGOES; VARIETIES; KEEPING QUALITY; POSTHARVEST CONTROL; QUALITY CONTROLS; PREHARVEST TREATMENT; PRODUCTION INCREASE; MARKETING CHANNELS; SUPPLY BALANCE; STANDARDS; EXPORT CONTROL; PHILIPPINES PH2019000848 P10 U10 Vulnerability assessment to landslides and flooding along the Sta. Rosa-Silang [Philippines] Riverine system using LIDAR and GIS [Geographic Information System]-based hydrological modeling technologies. Magcale-Macandog, D., Gunay, C.J.C., Bacani, A.J.V. 2017 TR-1797. Occurrence of landslides and flooding had been increasing in the Santa Rosa-Silang sub watershed brought about by extreme weather disturbances including tropical depressions, Southwest monsoon rains, storms and typhoons. Rapid industrializations and urbanization in the past three decades in the subwatershed resulted to massive land use change involving the conversion of agricultural and agroforestry farms into built-up areas. This land use change resulted to increased impermeable soil surface altering the water balance in the subwatershed. The Santa Rosa riverine network with its headquarters from the upstream areas of Silang, Cavite passes through the city of Santa Rosa and drains into the vast Laguna de Bay [Philippines]. In this study, a GIS-based hydrological model, the Soil and Water Assessment Tool (SWAT), was used to simulate the quantities of water inflow and outflow in each of the 49 dominant hydrologic response units (HRUs) along the entire subwatershed area. Spatial information such as its digital terrain model (DTM) extracted from LIDAR and RS data, land cover map and soil map, together with its 36-year (1980 to 2015) rainfall and temperature data, were inputted in the SWAT model's platform to generate the surface flow and sediment yield during rain events in the HRUs within the subwatershed. With these outputs, the subwatershed portions and the specific HRUs vulnerable to flooding and erosion were mapped out. Simulation results showed that the low permeability of soil surface increases the occurrence of flashfloods in low-lying areas. Sloping and open surfaces in the upstream areas are however, prone to landslides. Vulnerability assessment has shown that the communities along the shoreline and riverine system are most vulnerable to flooding and landslides. These results will be useful in the development of area-specific adaptation and mitigation strategies to disasters like landslides and foods.

Language

English

Document Type

Article

Pages /Collation

138 leaves

En – AGROVOC descriptors

MANGOES; VARIETIES; KEEPING QUALITY; POSTHARVEST CONTROL; QUALITY CONTROLS; PREHARVEST TREATMENT; PRODUCTION INCREASE; MARKETING CHANNELS; SUPPLY BALANCE; STANDARDS; EXPORT CONTROL; PHILIPPINES

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