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Now showing items 21-29 of 29
Water quality in Imbang river, Negros Occidental: effluents and pollutant loads from agriculture, sugar mills, households, and shrimp farms
(Bureau of Agricultural Research, Department of Agriculture, 2007)
An ecological assessment of Imbang River in Negros Occidental was undertaken from December 1992 to February 1995. The effluents from sugar mills, households, shrimp farms, sugarcane plantations and rice fields were ...
Agricultural run-off and pollution in Imbang River, Negros Occidental
(Bureau of Agricultural Research, Department of Agriculture, 2007)
This study determined the concentration of key pollutants carried by agricultural run-off from the drainage area of Imbang River, Negros Occidental over a two-year period. The quantities loaded into the river were estimated ...
Giant squid Thysanoteuthis rhombus caught by jigs in Calauag Bay, southeastern Luzon
(Bureau of Agricultural Research, Department of Agriculture, 2007)
Test fishing for the giant squid Thysanoteuthis rhombus using large jigs was conducted in selected areas around Alabat Island, Quezon Province from May 1991 to October 1992. A total of 92 fishing days and 425.3 fishing ...
Improved production of mud crabs Scylla serrata in marine pens with used tires and bamboo tubes as shelters
(Bureau of Agricultural Research, Department of Agriculture, 2007)
One serious problem in mud crab farming systems is cannibalism and low survival, but this can been offset by provision of shelters. Two types of shelters were tested on mud crabs grown in bamboo pens set in a mangrove area ...
Adaptation of integrated fish-duck-pig farming system in Leyte
(Bureau of Agricultural Research, Department of Agriculture, 2007)
Adaptation of a fish-duck-pig integrated farming system was conducted at the Busay Freshwater Experimental Farm in Babatngon, Leyte. Genetically improved farmed tilapia (GIFT) and common carp (at a ratio of 4:1) were stocked ...
Evaluation of fertilizer use and milkfish yields in Palawan
(Bureau of Agricultural Research, Department of Agriculture, 2007)
Milkfish yields in Palawan in 1993–94 were low, only 595 kg/ha-yr on average and ranged 100–700 kg/ha-yr in 35 of 50 farms surveyed. Only seven farms had yields between 1,000 and 1,800 kg/ha-yr. Yields were higher in deeper ...
Grow-out of the tiger shrimp Penaeus monodon in floating net cages in Batan Bay, northern Panay
(Bureau of Agricultural Research, Department of Agriculture, 2007)
The effects of two stocking densities and two feed combinations on growth, survival and production of the giant tiger shrimp Penaeus monodon in floating net cages were studied in an attempt to refine the existing technology ...
Transplantation, hatchery, and grow-out of window-pane oyster Placuna placenta in Guimaras and Iloilo
(Bureau of Agricultural Research, Department of Agriculture, 2007)
The windowpane oyster Placuna placenta (local name kapis) used to be harvested in large quantities and support a shellcraft industry in the Philippines, particularly in Panay Island. But the fishery and the industry declined ...
Grow-out of milkfish in net-walled marine pens in La Union
(Bureau of Agricultural Research, Department of Agriculture, 2007)
Grow-out of milkfish in 125 m<sup>2</sup> net-walled marine pens was tested in Santo Tomas Cove, La Union at three stocking densities of 6, 9, and 12 fish/m<sup>2</sup> and using commercial feed (crumbles and pellets) with ...