Weed Control, Growth, and Yield of Tomato After Application of Metribuzin and Different Pendimethalin Products in Upper Egypt

Abstract Weeds are very problematic for tomato production worldwide. Differences in formulations of the same herbicide have different effects on weeds and crops. There no published studies effect capsule suspension pendimethalin (Pend) products Egypt. The present study aims at evaluating three pre-plant Pend compared with a post-plant metribuzin (Met) hand hoeing their efficiency weed control growth, yield, yield attributes, stand loss rate plants, economic benefit implications production. During fall-winter seasons 2019/2020 2020/2021, six treatments were studied including products, Met, hoeing, un-weeded field experiments. Weed density, fresh weight [FW], FW reduction% measured. Tomato measurements included rate, vegetative growth parameters, leaf chlorophyll concentration, fruit diameter length, marketable total yields, soluble solids, pH. All herbicides significantly reduced FW. Stand rates 0% followed by Sencor (~ 9.3–11.1%). Vegetative concentration improved all treated plots as to control. highest significant increases branch number, plant height, stem diameter, shoot observed Mostmicro treatments. yields Sencor. Met had benefit–cost ratio study. effective against various noxious weeds, but “hybrid 65,010” was more tolerant which resulted better than those obtained products. most cost-effective method Met.