Doses and application times of trinexapac-ethyl in upland rice

Abstract

The use of growth regulators as a technique that can reduce plant height and thus strengthen stalks, which may be an option to eliminate or reduce plant lodging, thereby avoiding crop loss. However, there is a lack of information on the subject. The purpose of this study was to evaluate the effect of the dose (0; 37.5; 75.0; 112.5 e 150.0 g ha -1 active ingredient) and the application times of trinexapac-ethyl (sixth, seventh and eighth leaves), in a randomized complete block, in a 5x3 factorial scheme, with four replicates. The field experiment was performed during the 2016/17 crop season, in the experimental farm located in Selvíria,

Agronomic traits of white oat treated with the growth regulator trinexapac-ethyl

“…Bazzo et al (2019), observed that trinexapac-ethyl caused a reduction in TGW in oat. Martins et al (2021), in studies on the effects of TE in upland rice cultivars, verified that doses above 75 g ha -1 cause a reduction in the thousand grain weight, associated with the application period. Kaspary et al (2015) reported that the use of 150 g of TE ha -1 interfered in the thousand grain weight of white oat cultivars.…”

“…Marco Junior et al (2013), working with different wheat doses and cultivars, concluded that trinexapac-ethyl increases the number of panicles per unit area and wheat yield at doses 75 g ha -1 and 150 g ha -1 . On the other hand, Martins et al (2021) studying the effect of TE application, reported a reduction in yield in rice harvest from the dose of 75 g ha -1 . However, for wheat, TE may positively affect the yield variable, increasing it or not, reducing it in relation to controls (Knott et al, 2016;Swoish et al, 2021).…”

Doses and application times of trinexapac-ethyl on the industrial quality of white oat grains

“…Bazzo et al (2019), studying doses of TE and N in white oat cultivars, in two growing environments (Mauá da Serra and Londrina-PR), observed that the cultivar IPR Artemis showed a reduction in TGW with the use of TE in the municipality of Maua da Serra. Martins et al (2021), in studies on the */**: significant at 5 and 1% probability by the F test, respectively; ns: not significant; CV: coefficient of variation; Variables: TGW: thousand grain mass; HW: hectoliter weight; GI>2mm: grain index greater than two millimeters; PI: peel index; IGY: industrial grain yield. effects of TE in upland rice cultivars, verified that doses above 75 g ha -1 cause a reduction in the thousand grain weight, associated with the application period.…”