Study was carried out to investigate the effect of fertilizers (N,P,K and Ca), minor elements (Mo, Mn, Mg, B and Zn), growth regulators (2,4-D, 2,4,5-TP, NAA, Gibberellin, Hormoton and Atotone) and air temperature on the fruit setting of red pepper.
1. The number of fruits was increased by the application of N (up to 460gr/ton of soil), P (up to 230gr/ton), Mg (0.5%), 2,4,5,-TP (1/4,000) and Atotone (1/8,000-1/2,000), but decreased by Ca (495-990gr/ton), B (0.1-1.0%), NAA (50-300ppm) and Gibberellin (10-60ppm), and not affected by K (up to 602gr/ton), Mo (0.1-1.0%), Mn (0.1-1.0%), Zn (0.01-0.1%), 2,4-D (1-20ppm) and Hormoton (1/80-1/140).
2. The number of buds, flowers and fruits, and fruit setting percentage were highest when the mean air temperature was 21.6-23.3℃, and they were decreased when the temperature was higher than that.
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