LIGHT INTERCEPTION AND YIELD OF PEPPERS GROWN UNDER GLASS IN RELATION TO PLANT SPACING
Density, planting pattern and row orientation all influenced light interception by the crop, but only the effect of density was reflected in dry matter yield. The experimental methods apparently overrated the effects of planting pattern on light interception, especially at low density. Glasshouse construction and orientation may have interfered with the effect of row orientation on light interception.
Yield-density relations conformed to the pattern established for other crops. Biological yield remained fairly stable over a wide range of higher densities. The proportion of total dry matter recovered in the fruit, the weight per fruit and the percentage red coloured fruit declined with increasing density. The optimum density for fruit production appeared to be somewhat lower than the minimum density required to attain ceiling biological yield.