Analysis of the Relationship between Sweet Pepper Stem Growth and Labor Load

In this study, we analyzed the relationship between days after planting or growing degree (GDD) and number of labor hours spent on stem training, pruning, harvesting sweet pepper cultivated in commercial glass greenhouses. A model was developed for estimating according to plant height. three large-scale (>1 ha) greenhouse sites (1, 2, 3), weekly growth height, fruit, yield were measured manually other solanaceous crops, different types recorded by a management system during cultivation period. The percentage high pepper, at 70.4% total management. There significant elongation rate (p = 0.008) but not GDD 0.331). Consequently, reach length 15 cm, needs be 148.5°Cd. Fruit production per unit area showed linear with GDD, highest site where average temperature higher than that sites. ratio 1,000 m2 pruning 38.7% 33.3% 1, 46.5% 30.1% 41.6% 32.7% 3, respectively. Delayed side-stem training requires load, indicating difference demand crop status each greenhouse. daily resulted rate; consequently, cm shorter strong positive (r > 0.98), also observed increase height < 0.01). result study is can predict required using time coefficients work stage based change GDD.