Efeito do tratamento de sementes na cultura da aveia

Abstract

Seed treatment is a routine practice that assists in pest control and also helps in the initial start-up of the plants in the field. The interaction between products can bring increases in crop productivity. The great performance of oats in recent years is largely due to the use of high quality physical, physiological, sanitary and genetic seeds, as well as the adoption of seed treatment techniques with insecticides, nematicides, fungicides, nutrients and inoculants. In this way the objective of the present work was to evaluate the interaction between two insecticides and a micronutrient in the treatment of seeds in oats. The experiment was carried out initially in the Laboratory of Seeds of the Federal University of Pampa UNIPAMPA, Campus Itaqui and later in the experimental field of the same one. In the laboratory, the root and shoot length of four cultivars were evaluated: Agro Quarai, IAPAR 61, Esmeralda and Fronteira IPR. Two cultivars, IPR Esmeralda and Fronteira, were evaluated for the experiment conducted in the field. height of ten plants per plot at 10, 20 and 30 days after emergence and finally the cutting and collection of the materials for the determination of green matter and dry matter were carried out. The treatments used were: T1: (control); T2: (Tiametoxam 200mL/ha-¹); T3: (Fipronil 200mL/ha-¹); T4: (Zinco 300mL/ha-¹); T5: (Tiametoxam + Zn) and T6: (Fipronil + Zn). The results of the evaluations were submitted to analysis of variance, using the program GENES 2013. For the variable root length there was no interactions between the cultivars, however, the cultivar Fronteira obtained numerical superiority in relation to the Esmeralda IPR. Among the treatments, the cultivar Fronteira showed significant difference in relation to the Esmeralda IPR only in the T3 treatment. The variable length of shoot was significant only for the T6 treatment, where the cultivar Fronteira was superior to the IPR Esmeralda cultivar, in the same way that the average between the cultivars did not present significant effects. The results obtained through plant height measurements were not significant for the cultivar x treatment interaction, nor were they significant for the individual factors of the cultivars and treatments at the 10, 20 and 30 DAE levels. The green matter and dry matter variables did not differ significantly between the treatments and between the cultivars, however, the cultivar IPR Esmeralda obtained numerical superiority when compared to Fronteira.