The use of herbicides and growth regulators in agricultural crops to reduce vegetative growth is widely studied worldwide. This study aimed to evaluate the agronomic traits of upland rice subjected to low doses of glufosinate-ammonium applied at different development stages. The treatments consisted of five low doses (0; 15; 30; 60; and 100 g a.i. ha⁻¹; a.i.: active ingredient) of glufosinate-ammonium herbicide: a single low dose between active tillering (AT) and floral differentiation (FD); a single low dose after FD; low dose divided into two applications, the first at the beginning of the AT and the second between AT and FD; low dose divided into three applications, the first at the beginning of the AT, the second between AT and FD and the third after the FD, with four replications. The agronomic traits of upland rice were negatively affected due to the application of low doses of glufosinate-ammonium, with reduction in grain yield, 1000-grain weight, number of panicles, full spikelets and spikelets per panicle. Glufosinate-ammonium has no potential to be used as hormesis effect in rice plants due to loss in grain yield.

全世界广泛研究了在农作物中使用除草剂和生长调节剂来减少营养生长。本研究旨在评估在不同发育阶段施用低剂量草铵膦铵盐的旱稻农艺性状。治疗包括五种低剂量（0; 15; 30; 60;和100 g ai ha ^-1; 草铵膦除草剂铵盐：活性分ing（AT）和花分化（FD）之间的单一低剂量；FD后单次低剂量；低剂量分为两种应用，第一种是在AT的开始，第二种是在AT和FD之间；低剂量分为三个应用程序，第一个应用程序在AT的开头，第二个应用程序在AT和FD之间，第三个应用程序在FD之后，重复四次。由于施用低剂量草铵膦铵盐，旱稻的农艺性状受到不利影响，导致谷物产量，1000粒重，穗数，小穗数和每穗小穗数减少。由于谷粒产量的损失，草铵膦铵盐没有潜力被用作水稻中的兴奋剂。