The evidence suggesting that Turbinaria murayana extract induce remobilization of macromolecule from leave to grain of rice plants

Brown algae is known to produce several phytohormons. Therefore, it could be develop as an important biostimulant for growth of agriculture and horticultural plants. Action of biostimulant depends on optimal time of application. This article report growth and yield of rice plant supplied with liquid extract of several species of brown algae, either during vegetative or generative growth. The treathment influenced variably growth and yield of rice plants. Liquid extract of Sargassum crassifolium and Sargassum polycistum did not influenced growth and yield of rice plants, either supplied in combination with Turbinaria murayana extract or not during generative growth. However, application Sargassum cristaefolium and mixed extract consistenly effected growth and yield of rice plants. Application of Sargassum cristaefolium extract increased shoot dry weight, appoximately 94,70% higher than of control. In contrast, when this plants sprayed with Turbinaria murayana extract during generative growth reduced shoot dry weight, approximately 25% than those sprayed only with Sargassum cristaefolium during vegetative growth. Since the plants supplied with Sargassum cristaefolium during vegetative growth in combination with Turbinaria murayana during generative growth, induced grain weight of rice plants, this suggest that application of Turbinaria murayana extract induced remonbilization of macromolecules such carbohydrate and protein from leave to the grain of rice.