【公告】得獎名單出爐啦
Duangporn Sangsak1, Yu-Ting Wu2
1 Department of Tropical Agriculture and International Cooperation (DTAIC), National Pingtung University of Science and Technology, Taiwan
2 Department of Forestry, National Pingtung University of Science and Technology, Taiwan
Corresponding author: m10822025@mail.npust.edu.tw
Chili (Capsicum annuum L.) is an economically important vegetable in Thailand. Currently, the overuse of chemicals in the agricultural land for pathogens caused soil degradation. Previously, plantation of crops with nitrogen-fixing legume species has been studied as an alternative in monoculture as a way to counterbalance the N deficit in sustainable agriculture. Chili-Acacia relay intercropping system and soil microbial could promote efficient use of regulated nitrogen cycle. Crops inoculated with arbuscular mycorrhizal fungi (AMF) and nitrogen-fixing bacteria (NFB) are proved to enhance nutrients uptake and soil fertility. The application of organic amendment can increase microbial activity. This study investigates the effect of intercropping on nitrogen uptake of crop plants, soil chemical properties, and bacteria community structure. Nitrogen fixation and N transfer were studied using the 15N isotope method across four treatment including chili monoculture, chili inoculated with AMF monoculture, intercropping between Acacia confusa inoculated with NFB and chili inoculated AMF. The current results confirm that Glomus tetrastratosum colonized in the chili root after inoculation for three months while Bradyrhizobium elkanii infected in the acacia roots within a month. Chili grew best in the intercropping system with the amendment of organic compost. The expected results of this study will indicate interactions below ground to increase crop nutrient (N and P) uptake and soil bacterial community diversity in chili-acacia relay intercropping systems. Furthermore, these potential could improve soil nutrient management and reduce the use of chemical fertilizers to maintain soil fertility.
學生組