Adjuvants for spraying of fungicides in wheat

作者：Rodrigues de Souza Bruno Jose; Perez Pedro Henrique; Bauer Fernando Cesar; Raetano Carlos Gilberto; Weirich Neto Pedro Henrique; Garcia Luiz Claudio^*

来源：Ciencia Rural, 2014, 44(8): 1398-1403.

• disease
• spray boom
• Tritium aestivunz

The foliar diseases and spike can markedly reduce the yield of wheat. Despite prevailing chemical control in the management of disease, studies with adjuvants to improve the performance of fungicides are still incipient. The aim of this study was to evaluate the effect of adding adjuvants to chemical fungicides to control leaf diseases and spike, as well as on the yield of wheat crop. The experimental design was a randomized block design with 05 treatments: control (no fungicide application in the shoot); fungicides only in shoots; fungicides + adjuvant base of orange essential oil; fungicides + lecithin-based adjuvant and acid propionic; fungicides + adjuvant base of orange essential oil+ lecithin-based adjuvant and acid propionic, in 04 repetitions. The treatments were applied during the harvests of 2011 (04 fungicide applications) and 2012 (05 fungicide applications). The variables assessed were incidence and severity of diseases, yield components and economic return. In the 2011 harvest the addition of adjuvants in the spray syrup affect the performance of the fungicides the, the number of grains per spike, yield and economic return with the Supera (c) variety. In 2012 the addition of adjuvant to the fungicide influenced the severity of

• 出版日期2014-8