This research aims to experiment with natural dye from the longan leaves Color fastness UV protection Designed textile products from Textile dyeing of longan leaves. and to teach the dye from longan leaves for design and processing of textile products to the community under the concept of the creative economy. The study consisted of two parts The first part is Color fastness and UV protection from fabric dye from longan leaves. The second part is Designed textile products from Textile dyeing of longan leaves. The research area at Yu Wa San Pa Tong district Chiang Mai province area planted with longan. This research is part of the solution to the problem of waste longan leaves. In addition farmers have to produce compost leaves and fruits are often destroyed by the fire. Impact on air pollution and Haze occurred in Chiang Mai now. Natural dye extracted from longan leaves was applied to a silk fabric by exhaustion dyeing process. Aluminium potassium sulfate ferrous sulfate copper sulfate and stannous chloride were used as mordants. The dyeing was conducted with and without metallic salt mordants using three different mordanting methods pre-mordanting meta-mordanting and post-mordanting. The colour of each dyed material was investigated in term of the CIELAB (L* a* and b*) and K/S value. The color fastness to washing rubbing perspiration light and water of the dyed samples was determined according to ISO test method. The results show that the optimal results were achieved when dyeing at 80 ?C for 50 minutes and at pH 3. Silk fabric dyed in a solution composed of a Longan from leaves without mordant showed a shade of pale yellowish-brown while those mordanted with stannous chloride alum and copper sulfate produced a variety of medium to dark yellowish-brown color shades. However duller and darker brown shade was obtained with ferrous sulfate mordant. The color fastness to washing water perspiration and rubbing were good to very good. However the light fastness results showed fair level except fabric without mordanted whose colour change rating was poor. The results confirmed that natural dyes from longan leaves extract with metal mordants have potential applications in fabric dyeing and in producing very good UV-protective silk fabrics. The second part is research data collected from literature research related research and field data was collected by interviewing recording a career field research brainstorming sessions and participatory action research between the villagers to researchers. The findings presented by descriptive analysis. The result is Textile product design of longan leaves dyed fabrics must take into account the capacity of the group. The villagers have restrictions on the production of textile products. There is no potential for forming other products. In addition to the garment as well as the group was started. The natural dyes of the longan leaves is new knowledge for the group. Therefore textile products in the early to conclude that the textile products the group members have expertise in manufacturing mens casual shirts ladies casual shirts and scarf. Create patterns with a variety of tie-dye technique. The silk material used as the main material used is cotton minority. Users is a group of conservative tastes nature lovers and those with artistic taste. The procession design and production-oriented textile products are Green Design

This study was carried out to evaluate the influence of pruning on floral emergence fruiting yield and fruit quality in longan. Fifteen years old “Daw” longan trees were pruned in June 2013 at Agricultural Technology Research Institute Rajamangala University of Technology Lanna Lampang province. The longan pruning for removing some branches consisted of 4 treatments i.e. 25 50 and 75 % compared with no pruning. The result revealed that there was no effect of treatment on floral emergence or leaf flushing after potassium chlorate application. However the 25-75 % pruning gave greater new shoot length leaf width and leaf greenness than that of no pruning. The pruning treatments increased fruit size while the highest pruning (75 %) decreased yield and the no pruning produced the lowest yield.

This study was aimed to explore marketing channel of organic longan in domestic and foreign markets as well as problems encountered of the northern organic longan group. Data collection was done through in-depth interview and focus group discussion. Results of the study revealed that the northern organic longan group had marketing channel of organic lognan both in domestic and foreign markets. It was found that domestic market employed two channel: selling organic longan directly to consumers and selling organic longan to middlemen. For foreign market it was found that the northern organic longan group sold their yields to middlemen and after that the middlemen sent it to foreign market. In the case of domestic market organic longan was mostly sent to Top Supermarket. For foreign market it was mostly sent to Singapore European and Asian countries. For problems encountered the following were found: an amount of organic longan was inadequate for need of the market; uncertainty of organic longan yields in each year; few organic longan markets; and increased production costs due to high price of gasoline.