Abstract
Effects of temperature and fertilizer application level during the period of seedling raising on the growth of seedlings and subsequent yield in eggplant was evaluated.
High temperature and heavy fertilizer application promoted the growth of seedlings with an increase in dry weight. The seedlings held at 30°C (day tempera-ture) -25°C (night temperature) and 30°C-20°C under heavy fertilizer application condition had the weightiest dry matter, showing larger value of stem weight to root weight with a higher stem and lower root percentage of dry matter distribution than those grown at lower night temperature under light fertilizer application condition. S/R value of seedlings was larger at 30°C day temperature than those at 25°C or 20°C. Seedlings with the smallestS/Rvalue was produced at 25°C-20°C under light fertilizer application condition.
Plants from the seedlings raised at 25°C-20°C, 25°C-15°C and 30°C-20°C under light fertilizer application condition produced the highest yield. Seedlings with lowerS/Rvalue at transplanting time developed well, formed more thick roots over 1 mm in diameter, produced higher yield after transplanting. There was a correlation betweenS/Rvalue and the yield.
As the number of thick roots increased, the yield was higher, there also found a close correlation between the number of thick roots and yield.
