Effect of inabenfide and uniconazol application on the growth and lodging of rice plant under different nitrogen levels
1990
Kim, C.K. | Kim, S.S. | Jun, B.T. | Park, S.H. (Rural Development Administration, Iri (Korea Republic). Honam Crop Experiment Station)
This study was carried out to investigate the effect of growth regulators (Inabenfide, Uniconazol) on the yield and the related lodging traits in paddy rice plant. Nitrogen was applied three levels 12, 18, 24 Kg/10a. Uniconazol and Inabenfide were applied at 50 days (Ina.50 DBH) and at 15 days before heading date (Uni. 15 DBH), respectively. Applied Inabenfide, length of the 4th and 5th internode was more shortened than the length of non-application by 16 and 36 %. Applied uniconazol that of 2nd 3rd internode was more shortened than length of non-application by 22 and 28 %, respectively. Applied Inabenfide and Uniconazol, moment and height of center gravity were lowered and breaking weight was increased and than lodging index was reduced. Although nitrogen applied 24Kg per 10a, lodging was reduced markedly by the Inabenfide and Uniconazol. Applied Inabenfide and Uniconazol, number of spikelets per m** (2) showed fewer than that of non-application. But filled grain ratio and 1,000 grain weight were reversed. Yield was increased 1-14 %, 0.9 % in Inabenfide and in Uniconazol compared to non-application, respectively
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