Effects of thiourea on growth and flowering of rejuvenated in lichi grown in farmer’s orchard at Tambo Nahuabo,
Ampore Phananikom, Changwat Sakon Nakhon between may 2015 to march 2016. The experiment was conducted on
litchi trees Nakorn Phanom based on randomized complete block design (RCRD) 4 blocks,4 treatments; sprayed with tap
water (control), thiourea concentration 50, 100 and 150 g./water 20 l. The result revealed that spraying thiourea 100 –
150 g/20 liters of water had statistically significant difference, which could stimulate number of bud sprouts, the
length of branches and width leaves equal to 43.40 to 45.40 branches, 121.10 to 126.40 cm. and 6.30 to 6.70 cm,
respectively. Spraying with thiourea concentration 150 g / 20 liters of water could stimulate the most number of
sprouting on the fourth set equal to 67.70 branches.