Effect of Fungicide Applications on Grain Sorghum (Sorghum bicolor L.) Growth and Yield

Abstract

Field studies were conducted in the upper Texas Gulf Coast and in central Louisiana during the 2013 through 2015 growing seasons to evaluate the effects of fungicides on grain sorghum growth and development when disease pressure was low or nonexistent. Azoxystrobin and flutriafol at 1.0 L/ha and pyraclostrobin at 0.78 L/ha were applied to the plants of two grain sorghum hybrids (DKS 54-00, DKS 53-67) at 25% bloom and compared with the nontreated check for leaf chlorophyll content, leaf temperature, and plant lodging during the growing season as well as grain mold, test weight, yield, and nitrogen and protein content of the harvested grain. The application of a fungicide had no effect on any of the variables tested with grain sorghum hybrid responses noted. DKS 53-67 produced higher yield, greater test weight, higher percent protein, and N than DKS 54-00. Results of this study indicate that the application of a fungicide when little or no disease is present does not promote overall plant health or increase yield.

Biostimulation as a process aiding tebuconazole degradation in soil

“…Jastrzębska and Kucharski (2007) made similar observations while investigating the effect of cyprodinil and a mixture of epoxiconazole and dimoxystrobin on the productivity of spring barley. In turn, Fromme et al (2017), who analyzed azoxystrobin and flutriafol administered in a dose of 1.0 dm 3 ha −1 and piraclostrobin in a dose of 0.78 dm 3 ha −1 , reported no significant changes in the growth and development of sorghum. Furthermore, Paul et al (2011) demonstrated that the yield of maize grown on soil treated with azoxystrobin, piraclostrobin, propiconazole + trifloxystrobin, and propiconazole + azoxystrobin increased compared to that of maize from plots not exposed to these Homogenous groups denoted with letters (a-e) were calculated separately for each enzyme Date of analysis: 20 days, 40 days, 60 days.…”