EFFECTS OF NaHSO3 ON GROWTH AND YIELD OF BELL PEPPER

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  • 1 1Department of Horticulture, Jilin Agricultural University, Changchun, The People's Republic of China
  • 2 2Bureau of Agriculture, Forestry and Animal Husbandry of Anshan City, Anshan, Liaoning Province, The People's Republic of China
  • 3 3Department of Horticulture, University of Nebraska, Lincoln, NE 63533-0724

Sodium hydrogen sulfate (NaHSO3) in aqueous solution was sprayed on bell pepper (Capsicum annuum) plants beginning at first anthesis to test its effects as a photorespiration represser and resulting effects on yield. NaHSO3 sprays promoted plant height, stem diameter, fruit number and plant weight and increased the net assimilation rate, thus increasing yield. Concentrations of 60, 100, 120, 130, 200, 240 and 300 ppm were all effective, with 200 ppm optimum. Sprays repeated for three times at 7 day intervals were more effective in increasing growth and yield of bell pepper than spraying once or twice. This technique has gained acceptance as a practical method for improving production of bell pepper in Northeast China. Additional research is underway to further refine this practice.

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