Many of our local plants contain helpful chemicals, particularly alkaloids, that are effective against fungal and bacterial diseases of other plants. Thus, they are mixed with the soil to control the fungus that causes the diseases of seedlings. Allow the leaves to decompose for about one week before transplanting the seedlings.
Some of these leaves are as follows:
* abaca leaves
* garlic orchid
* santan pula
* beans (red variety)
Thus, using plant leaves in controlling disease-causing organisms is no doubt cheaper than pesticides and insecticides. It is also simpler and easier to apply by merely incorporating the leaves with soil during cultivation. When decomposed, the leaves release certain chemicals which prevents harmful bacteria and fungi from attacking the crops. Besides controlling diseases, the leaves also increase the organic matter content of the soil,
improving its structure and fertility.
Source: Philippine Farmers’ Journal June 1982
Search terms: abaca leaves components, sampaloc leaves as insecticide, sampaguita insecticide in the philisppine, organic pesticides for ampalaya, fungal and bacterial disease of ampalaya, feasibility study for ampalaya production, diseases of saluyot and their control, disease of santol leaves, cause of diseases of ampalaya, biocontrol of ampalaya leaves