Influence of thermal effect duration on onion yield

Organic Agriculture development is directly linked to ecologically pure weed removal. One of the ecological weed control processes is thermal weed control using wet water vapour. The analysis of different thermal weed control technologies is presented in the article while using wet water vapour for weed removal in the onion crop. The influence of thermal exposure duration on fertility of the onion crop is presented. It was established, while approximating dependence of onion crop yield on the thermal exposure to wet water vapour duration that the maximal fertility increase was caused by the thermal exposure time of 2.2 s. Two factors influence yield increase, which reached in our experiment 137 to 146%, using weed control technology: the onion root system was left intact during the vegetative season and some thermal stress, caused by partial injury of onion neck tissuesVytauto Didžiojo universitetasŽemės ūkio akademij