Weed and Pest Control by means of Physical Treatments;Effect of infrared irradiation on viability of weed seeds

물리적인 방법을 이용한 잡초 및 병해충 방제 방법의 개발;적외선 조사가 잡초종자의 발아율에 미치는 영향

  • Published : 1996.03.31


This study was to provide the basic information for the development of thermal weeder which uses LPG as fuel. Weed seeds of Digitaria sanguinalis S. and Portulaca oleracea L. mainly developed in fram and forestry nurseries were used as experimental samples. At different irradiation temperature(60, 80, 100, 150, $200^{\circ}C$), the dffects of weed seed species(digitalis, purslane), condition of seed(dry, soaked), and irradiation time(2, 5, 10, 20, 30, 60, 180, 300 sec) on seed viability were investigated was investigated by examining interaction and main effect of experimental factors. The results showed that viability of weed seed was significantly affected by all irradiation temperature tested. Irradiation time significantly affected on viability of weed seed on all levels of irradiation temperature. also, there were interactions between condition of weed seed and irradiation time on seed viability at each irradiation temperature.