Effect of a growth promoter on the exploitation of Pennisetum purpureum cv Cuba CT-115

The influence of applying 0 and 1.5 L/ha of a growth promoter after each Cut on the yield Of Pennisetum purpureum cv Cuba CT-115 was studied through complete random design and four repetitions. The greatest (P < 0.05) height was obtained with the application of the product and varied between 97 and 103 cm in the rainy season and between 72 and 83 cm in the dry season. Similar performance was recorded in the growth. There were significant (P < 0.05) differences between treatments for the content of leaves favorable to the growth promoter, and the opposite occurred for the stem. The highest (P < 0.05) yields of DM and of leaves were attained when sprinkling the product after each cut with increases of 12.51 and 9.91 % for the annual yield and in the dry season, respectively. There was. only significant difference in the digestibility of the leaves in the dry season (52.47 and 55.01 % for the control and the product, respectively). It is concluded that the application of 1.5 L/ha of Vitazyme after each cut produced positive effects on the forage of Pennisetum purpureum cv Cuba CT-115, and further basic studies are suggested to contribute to the explanation of the results.