Jaturiya Intarak. Selection of appropriate technology for longan production : a case study in Sanpatong district Chiang Mai province Thailand. Master's Degree(Appropriate Technology for Resources and Environmental Development). Mahidol University. : Mahidol University, 2006.
Selection of appropriate technology for longan production : a case study in Sanpatong district Chiang Mai province Thailand
Abstract:
This research had the objective of studying longan production technology, to relations
between personnel factors, technological factors and longan yields and to seek appropriate
technology for the greatest longan production. The samples were farmers growing longan in the 1st
soil layer in Sanpatong District, Chiangmai Province. Data was collected by questionnaires and
interviewing the family leaders of 299 households. SPSS Windows was used for data analysis. The
statistics used were percentage, mean, standard deviation, T-test, ANOVA and Multiple
Classification Analysis (MCA).
The basic results indicated that most farmers habitually used breaking branches, pruning 1
time/year, manure and 15-15-15s fertilizer, watering once a week, using chemicals to eradicate
disease and pest, and lawn mowers together with chemicals substances to kill weeds.
It was found that the use of appropriate technology of longan production was related to the
number of laborers, cost, connections with agricultural extension officers, being member of farmer
groups, training in longan production, tillage on upland, width of water channel aside the beds,
distance between longan trees, sources of branches, Potassium Chlorate dissolved in water, method of
fertilizer use, type of fertilizer in each duration, Dolomite Lime adding, use of hormone and means of
insect protection that affected production with statistics significant (p<0.05). Multiple classification
analysis indicated that frequency of irrigation affected production at a statistically significant level.
(p<0.05) The frequency most likely to yield high productivity was once in 1-3 days. Frequency of
fertilizer use in post harvest time, affected production at a statistically significant level (p<0.05). The
average of frequency most likely to yield high productivity was 4 times.