Production System Trial of Longon Low Canopy Pruning Orchard in Chiang Rai Province

Abstract

Production system trial of longan low canopy pruning orchard in Chiang Rai province had conducted during October 2007-September 2011. The trail was compared low canopy pruning (LCP) and farmer practice (FP) – or high canopy in 10 farmer orchards, at Muaeng, Mae Lao, Phan and Pa Daet districts in Chiang Rai province. Twebty longan trees were sampling in each orchard and divided into 2 groups for treated. The t-test is used to compare the values of the means from two methods. The result had shown no significant in flowering percentage during the first 2 years but LPC tree was highly significant different in blossom in the 3 year. Number of fruit per panicle was no significant from all 3 years, between LCP and FP. Yield per tree in LPC tree was no significant different in 2 and 3 years but in 1 year that LPC tree gave yield per tree lower than FC tree. Harvesting efficiency (kg/hrs/man), LPC tree was highly significant different from FC tree over 3 years and net revenue became higher than FC tree in 3 year.