Effect of phosphorus and Rhizobium inoculation on growth and nitrogen fixation of hamata (Stylosanthes hamata cv.Verano) grown on Kamphaengsaen soil series [Thailand]
1986
Viroch Impithuksa (Kasetsart Univ., Bangkok (Thailand). Faculty of Agriculture. Dept. of Soil Science) | Wanakorn Rungrattanakasin
Pot experiment was established to determine the influences of Rhizobium inoculation (non-inoculation and inoculation) and three phosphorus rates (0, 10 and 40 Kg P/ha) on oven-dry matter, N yield and nitrogen fixation activity at different ages of harvesting (2, 2.5, 3, 3.5 and 4 months) of Hamata legume (Stylosanthes hamata cv.Verano) grown on Kamphaeng Saen Soil Series which was one of the most common soils used for growing forage crops for dairy production in the central and western parts of Thailand. Oven-dry matter and N yield of Hamata legume were significantly increased with phosphorus fertilization and Rhizobium inoculation at all ages of harvesting and oven-dry matter as well as N yield of this legume were the highest at age of 3.5 and 4 months. The activity of nitrogen fixation measured by acetylene reduction method was significantly increased with phosphorus fertilization and Rhizobium inoculation. Maximum nitrogen fixation activity of this legume was observed at the age of 3.5 month at the rate of 2.07 u moles C2H4/plant. hr. for non-inoculation and at the rate of 3.77 u moles C2H4/plant. hr. for inoculation.
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Este registro bibliográfico ha sido proporcionado por Thai National AGRIS Centre, Kasetsart University
