Effects of cow manure ratios on growth and flavonoids content of Waan pha-ya-gasak (Leea macrophylla Roxb. ex Hornem.)

Abstract

     Study on the effect of cow manure ratios on growth and yield of the Waan pha-yagasak (Leea macrophylla Roxb. ex Hornem.) The completely randomized designed (CRD) was used in this study consisting of 5 treatments of cow manure ratios (0, 200, 400 and 600 g/plant). The results showed that plant height was significantly different (p<0.05) in accordance to the cow manure for each treatment after transplanted for 3-7 months. Plants receiving cow manure of 600, 400 g/plant had the highest hight at 7 months. The leaf number per plant was significantly different (p<0.05) at the age of 2-5 months and given the maximum number at 5 months when receiving cow manure at 600 g/plant. The leaves size, both width and length, increased more than 2 times at 3 months for all treatments and reached the maximum size at the age of 5 months. After transplanting for 7 months, plants receiving cow manure of 400 and 600 g/plant showed highest fresh tuber weight, whereas plants receiving 200, 400 and 600 g/plant showed maximum dry tuber weight. However, the flavonoid content of leaf were found significantly different (P <0.05) while the tuber flavonoid content of all cow manure ratios were not difference.