Germination energy is reliable index for evaluation of seed resistance depending of adverse environment conditions. Quality seed has small difference between germination energy and germination. With the energy increase, at the same level of germination, the yield is increased as well. Type of substratum is one of the things that have influence on germination energy, because the percentage of germinated seed is increasing with the usage of substratum with high absorption.The research was conducted in Laboratory for seed testing and in greenhouse of Oil Crop Department, Institute of Field and Vegetable Crops Novi Sad. Seed of sunflower hybrid NS-H-111 was treated with fungicides: benomil, metalaxyl and fludioxonil and insecticides: tiametoxam and imidacloprid. Control variant was seed without treatment. The next combinations were investigated: control (non treated seed), fludioxonil + metalaxyl (F+M), fludioxonil + metalaxyl + tiametoxam (F+M+T) and fludioxonil + metalaxyl + imidacloprid (F+M+I). Seed was treated right before sowing. For examination of retention period and it’s influence on seed, seed was kept in warehouse. Conditions in warehouse were depending from weather conditions. Sterilized sand and soil were used as substratum for investigation. Germination energy was determined 4th day from the sowing.The main cause of this investigation was to conduct the influence of retention period and type of substratum at germination energy.Based on the accomplished results there are statistically high  influence of chemical treatment, retention period and type of substratum at seed germination energy. Double interaction-chemical treatment x retention period and retention period x substratum type, were highly significant, while the interaction chemical treatment x substratum type wasn’t significant. Triple interaction was also statistically significant. Germination energy at control variant and at treatment F+M was highly significant referring to insecticides treatment. The value of this parameter at B+M treatment was significant referring to treatment F+M+T (for 1.70%), and highly significant referring to F+M+I treatment (for 2.52%). Germination energy after six and nine month keeping was highly significant in relation to the other variants. The values of investigated parameter after twelve months was significantly smaller in relation to values gained at the beginning of investigation and after three months. Seed germination in soil was significantly higher then in the sand for 2.62%.

sunflower seed; germination energy; chemical treatment; length of storage; substrate

Presentation: oral