The evaluation of post-emergence canola herbicides efficiency haloxyfop Rmethyl and lontral (Super gallant and klopyralid) for weed control by application with three kinds of sprayer (knapsack, automizer and micronaire)

Tobeh, Ebrahim and Alebrahim, Mohammad Taghi and Farzaneh, Salim (2018) The evaluation of post-emergence canola herbicides efficiency haloxyfop Rmethyl and lontral (Super gallant and klopyralid) for weed control by application with three kinds of sprayer (knapsack, automizer and micronaire). Masters thesis, University of Mohaghegh Ardabili.

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Text (ارزيابي كارايي علف¬كش¬هاي پس از كاشت كلزا هالوکسی فوپ آرمتیل و کلوپیرالید (سوپرگالانت و لونترل) در كاربرد با سه نوع سمپاش پشتي (تلمبه اي، اتومايزر و ميكرونر)) Ebrahim Tobeh.pdf Download (831kB) | Preview

Abstract

In order to evaluate the effect of two types of herbicide on weed control and yield and yield components of rape, an experiment factorial split plot design in a completely randomized block design with three replications was done in the farm of Saghsloo village of Ardebil in 2017 year. The main treatments included three type of sprayer (Atomizer, Microner and knapsack sprayer) as main factor and in the subplots, herbicide type (super gallant, Lontrol and the mixture of the two herbicide) and two time chemical control of weed (2 to 8 leaves stage of canola and the begining stage of stemming of rapeseed) were to be a factorial arrangement. The results showed that the effect of spraying time on control of total weed fresh weight and narrow fresh weight leaf was significant but was not significant for on fresh and dry weight of broad leaves weed. Total fresh and dry weight of weeds and fresh weight of narrow leaves at first spraying stage (stage 2 to 8 leaves of rapeseed) compared to the second spraying time (previous stage of stemming of rapeseed) which eas showed decrement. The lowest density of broadleaf weed was obtained in Microner sprayer using super gallant at canola 2 to 8 stages. In control of dry weight of the total weed, it was determined that the lowest dry weight of the total weed was obtained commonly from the application of super gulant and mixing of two herbicides. According to the results of variance analysis, the main effect of herbicide type and time of spraying was significant on control of total dry weight of weeds and their interaction was significant on dry weight of narrow leaf weed. The results indicated that the super galant and the mixing of two herbicides were suitable in controlling dry weight of leaf weeds in the 2 to 8 leaf stage of canola. According to the results of analysis of variance, the effect of factors on main stem height, number of seeds per pod, number of seeds per plant, yield per plant was not significant but the effect of spraying time on sprayer was significant on the number of pods in the branch. The highest number of pods in the branch was related to the use of pump sprayer and at the previous stage of stemming of rapeseed. The maximum 1000 kernel weight of rapeseed was obtained from the use of Microner and Pump sprayer and the lowest 1000 kernel weight using Atomizer sprayer. According to the results of analysis of variance, the effect of spraying time on number of pods per plant, number of branches and total yield of rapeseed were significant. The highest number of branches, number of plant pods and total grain yield were obtained in stage 2-8 of canola and the lowest number of branches was obtained in the previous stage of stemming of rapeseed.

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