Effects of Air Temperature and Humidity in the Greenhouse on Growth of Semi-forced Cucumber Plants

Abstract

Effects of air temperature and humidity in the greenhouse on the growth of semi-forced cucumber ‘Natsunokaori’. Air temperature of 30°C and 60% relative humidity promoted the development of fruit and suppressed the development of lateral branches. In pinching cultivation, air temperature of 25°C and 40% relative humidity promoted the development of lateral branches by suppressing fruit growth. However, the percentage of marketable fruits and total number of fruits where increased by air temperature of 25°C and 40% relative humidity conditions.
In wire-training cultivation, air temperature of 30°C and 60% relative humidity suppressed unneccessary branches, simplyfying the work of training the plants.