April 28, 2006


One kind of bacteria attacks cabbage, whish causes its rotting. Among different chemical studied for this disease,UP Los Baños researchers found alum most effective, followed by lime.


1. Alum – dissolve about 150 grams of alum in a liter of water (15%) and spray this at the base of the cabbage plant.

2. Lime- pulverized lime and apply this at this at the base of the plant.

Wrap the base well with lime. Do this before the disease spreads.



From: PCARRD Farmnews Nov. 30, 1985


Bees: pest killer


In 10 countries of Africa, cassava plantations were infected by the mealy bug. At that time, cassava harvests were much reduced because of this pest.

The International Institute of Tropical Farming, in 1985, released 50,000 bees to counteract these bugs. Before the event, mealy bugs numbered as much as 1,500 for every growth or branch of cassava.

The pest population was much reduced because of the bees. After the event, only about 10-20 mealy bugs could be found on every cassava plant



From: PCARRD Farmnews Dec. 1990

Spider: enemies of insect pests



At one time, the prices of oranges, calamansi and other citrus became tremendously high, as if they were imported fruits. The reason: insect pests destroyed the crops.

Researches made at PCARRD* and UP Los Baños found out that spiders preyed on these insect pests. They investigated on about six kinds of spiders that thrived in the citrus plantation of Laguna and Batangas, and saw that these spiders preyed on the citrus pests. Entrapping them in their webs.

Hence, the researchers endeavored to enhance the population of said spiders and spread them all over the citrus plantations. In this way, the use of chemical pesticides was much reduced, not only reducing cost of production but more importantly, eliminating the hazard of chemical pesticides to the farmers and the environment.



From: PCARRD Farmnews August 1987



It has been researched on and tried at UP Los Baños College of Forestry that we have plants that can control termites. The most effective of these are the Balanoi and dilaw leaves. They contain methanol, which, when extracted and dissolved in water, can control termites.

Next to the above are the leaves of the Adelpha and kakawate, and weakest among those tried was the juice of the makabuhay.

The were tried on a sibukaw log that was exposed to termites for two weeks. When the extracts of the mentioned plants were sprayed on the log, no termites touched it.



From: PCARRD Farmnews July 1987