Author(s)

Andréia da Silva Almeida^1*, César Iván Suárez Castellanos¹, Cristiane Deuner¹, Adilson Jauer², Thais Ongaratto de Camargo¹, Cristian Troyjack¹, Geri Eduardo Meneglhelo¹, Francisco Amaral Villela¹, Paulo Dejalma Zimmer¹, Lilian Madruga de Tunes¹

¹PPG em Ciência e Tecnologia de Sementes, Universidade Federal de Pelotas, Pelotas, Brazil.
²Syngenta Crop Protection, Pelotas, Brazil.

Pathogens in the soil or transmitted by seeds can reduce the stand of plants, affecting the yield of the crop. Furthermore, in the case of rice, the low temperature is a limiting factor in culture. The treatment of seeds with insecticides is an alternative to reduce the damage caused by pests incidents during the early stages of plant development and in some cases, may assist in the germination of seeds exposed to low temperatures. In this sense, the objective of this study was to evaluate the influence of seed treatment with insecticides in the physiological quality and yield of hybrid rice seeds, cv. Inov CL. For this, three experiments were conducted with treated seeds in different doses of thiamethoxam + lambda-cyhalothrin and fipronil totaling seven treatments, including the control (no product). In the first experiment, it was determined seed germination to 10°C, 13°C, 16°C, 20°C and 25°C. In the second experiment, it was assessed seed vigor through accelerated aging, cold test and emergency field. The third experiment was carried out into the field to observe the number of panicles m^-2 and crop yield. It is concluded that treatment of hybrid rice seeds, cv. Inov CL with thiamethoxam + lambda-cyhalothrin and fipronil increases the germination percentage of seed and early seedling performance. Treatment of hybrid rice seeds, cv. Inov CL with thiamethoxam + lambda-cyhalothrin provides greater germination and early seedling performance compared to treatment with fipronil. Treatment of hybrid rice seeds, cv. Inov CL with thiamethoxam + lambda-cyhalothrin in dosages of 500 mL 100 kg^-11 of seeds or 500 mL 45 kg^-1 of seeds increases grain yield.

Oryza sativa L., Vigor, Yield Potential

Silva Almeida, A. , Suárez Castellanos, C. , Deuner, C. , Jauer, A. , de Camargo, T. , Troyjack, C. , Eduardo Meneglhelo, G. , Villela, F. , Zimmer, P. and de Tunes, L. (2015) Hybrid Rice Seed Treatment with Pesticides Improves Its Physiological Quality and Performance. American Journal of Plant Sciences, 6, 2405-2411. doi: 10.4236/ajps.2015.614243.