The use of compost added by Trichoderma is one improving the soil's chemical properties and can be used to increase production pakcoy plants. purpose this study was determine effectiveness derived from various types palm oil waste application on soil as well nitrogen content in This an experimental method with parameters observing plant fresh weight. research two factors. first factor three was...

the rapid expansion in world production of palm oil over the last three decades has attracted the attention of the oils and fats industry. oil palm gives the highest yield of oil per unit of any crop. palm oil is the major oil produced, with annual world production in excess of 50 million tonnes. throughout the world, 90% of palm oil is used for edible purposes (e.g., margarine, deep fat frying...

introduction water scarcity has led to the search for alternative water resources. one solution is the recycling of wastewater for irrigation. wastewater treatment is often based on biological systems such as activated sludge or other engineered units in urban areas. in rural areas, low-cost, environmentally-friendly alternative treatments such as constructed wetlands (cw), are more common. cws...