Effect of some medicinal oil with adjuvant (BIO-FILM) on maize, sunflower and sorghum productivity and associated weeds

Abstract

Abstract The aim of this study to evaluate the applied basil and camphor oils for weed control and phytotoxic effect on some field crops, compared to chemical and mechanical weed control as well as un-weeded check. Wire house and field experiments were conducted during the period from the year 2020 to 2023 in the experimental farm and wire house of Weed Research Central Laboratory at Giza Research Station, Agricultural Research Center (ARC) Egypt, in Randomized Complete Block Design (RCBD) in four replicates. The statically analyze of the data obtained, the significantly reduced of number and fresh weight of some weed species under all experiments by weed control treatments. Improvement of maize, sunflower and sorghum without any phytotoxic effect of essential oils or herbicides under study, except sorghum crop was sensitive to the herbicides used in the study. Camphor and basil oils were more effective on Ipomea eriocarpa, Setaria virids, Trianthema portulacastrum, Cyperus rotundus and Cynodon dactylon. The reduction in fresh weight of weed species about between 80 to 100% under low weed seed bank of the soil and sensitive weed species and less effect under the high soil weed seed bank specially by I. eriocarpa and S. viridsdue to the emergence of this weed species after applied this oils. Finley Camphor and Sweet basil oil can be using for weed control under low infestation by weeds and complement by one hand hoeing in case the high infestation by I. eriocarpa.