Application of Salicylic Acid and Gibberellic Acid Increase Stem Cutting Growth of Pennisetum purpureum cv. Mahasarakham and Pennisetum purpureum x Pennisetum americanum

The Napier grass continues to be a popular forage crop in Nakhonsawan Province and other areas the northern east-northern parts of Thailand. Increasing growth biomass growing low-quality sandy soil will increase economic value this plant. stem cutting two cultivars grass, cv. Pakchong 1 (Pennisetum purpureum x Pennisetum americanum) sweet Mahasarakham), were exposed plant regulators, gibberellic acid salicylic acid, application methods, soaking for 24 hr watering after inoculation into soil, studied. For one regulator test, most appropriate concentration 0.01 100 mg/L, respectively, method. There was an interaction between combination type method both cultivars. best stimulation effect with mg/L acids only. response different. Soaking suitable increasing shoot root length while fresh dry weight. This information useful stimulating agricultural purposes.