drainage ability. The climatic conditions in the project, where the experiment was carried out, were characterized as having low precipitation with long term draught. These harsh conditions were rectified using dripping irrigation. Suitable time of watering and average amount of water per plant per day was determined for the whole area under this investigation. Growth and survival rate of plants under dripping irrigation with different soil conditions, revealed the result how to select suitable plant species for growing in each area. Various materials such as vermicompost, manure, compost and chemical fertilizer were evaluated for their capacity to improve soil conditions. She concluded that not only utilization of chemical fertilizer is not the best option, but its continued use will also have a long-term negative effect on the environment and soil quality. Although vermicompost is effective, it is more expensive than other materials. Organic manure and compost, however, should be recommended for application because of their efficacy and low cost. In addition she advised that the forest plantation could be successfully established through dripping irrigation. However, the cost of installing the dripping irrigation in this reforestation project should be taken into consideration because this watering system required high financial investment. Dr. Phuvasa Chanonmuang from Thailand Institute of Scientific and Technological Research (TISTR) outlined the factors affecting atmospheric N exchange in the tropical forest, and how the atmospheric N concentration is important to the environment and human’s health. Assistant Prof. Dr. Phisit Suvarnaphaet from Silpakorn University (SU) Phetchaburi IT Campus explained how to design a low-cost solar energy cabinet dryer, while Assistant Prof. Dr. Kangsadan Sagulpongmalee from Phetchaburi Rajabhat University (PRU) showed how crop could be produced under the solar cells used to capture radiation from the sun. Solar energy, which is still underutilized and considered to be a source of clean energy, should be promoted to reduce our reliance on fossil as source of energy. Ms. Siriporn Sriaram from International Union for Conservation of Nature (IUCN) highlighted the hazard of solid wastes (plastic, rubber and tire, PET bottle, etc.) to the marine ecology and why appropriate management system plays a crucial role in managing these wastes and protect marine life. Dr. Nattaporn Prakongkep from Land Development Department (LDD) talked about how to manage forest ecosystem to improve soil properties in a natural reforestation area at Khao Cha-ngum area. Natural reforestation, which is a low input strategy to regenerate degraded land, should be used to restore the degraded forests in other parts of the country.
International Forum on Research of Natural Resources Rehabilitation, Environment and Energy
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