TRINEXAPAC-ETHYL REDUCES PLANT HEIGHT AND SEED YIELD IN FORAGE SORGHUM

Forage sorghum presents tall plants, what makes mechanicalseed harvesting a difficult task. Plant hormones can reduce plant height andfacilitate the harvesting. Thus, objective of this study was to evaluatethe effect growth regulator trinexapac-ethyl on and seedyield in forage sorghum. This research carried out at Embrapa Maizeand Sorghum, two seasons (2017 2018), randomized completeblock design, four replications three varieties (BRS Ponta Negra, 1141574and 0947216) under application Trinexapac-ethyl stages plantgrowth (V8, V12, V8 + V12). The characteristics evaluated were: height,seed yield mass 1000 seeds. hormone significantin both growth, with significant reduction height. Thehormone applied twice V12 had greater inreducing However, reduced seed threevarieties, implies need for further studies comparing advantageof loss yield.