Herbicides with natural and synthetic biostimulants in spring wheat

Abstract

Although the knowledge on agricultural using of biostimulants increases, there is still little information on their interactions with other chemicals i.e. herbicides. The aim of the study was to assess the influence of popular herbicides (MCPA + dicamba, dicamba + triasulfuron, florasulam+2,4-D) used with and without biostimulants based on seaweed extract (Kelpak) and nitrophenols (Asahi) on weed control efficiency, yield and quality of the crop. Field trial was carried out in the years 2014 and 2015 in the Institute of Plant Protection - National Research Institute in Poznan (Poland). The experiment was established on spring wheat cv.‘Torridon’, in 4 replications, using randomized block design. In the experiment two variants of application were tested. In the first variant preparations (herbicide and biostimulant) were applied as tank mixtures at the crop growth stage BBCH 30 and in the second variant in some combinations herbicide application was followed by biostimulant used alone. Weather conditions had a profound impact on tested preparations activity. Addition of biostimulants to herbicide had not affected weed control efficacy but application of herbicide and biostimulant mixture revealed its influence on yield parameters of wheat. Biostimulants influenced yield quality parameters e.g. by enhancing gluten amount in grains.

Marketable Yield of Potato and Its Quantitative Parameters after Application of Herbicides and Biostimulants

“…We obtained similar effects of weed control [8] when analyzing the dry weight of weeds. A similar efficiency of herbicides and their mixtures, reaching 96%, has been reported by other authors [3,14,29,30]. Matysiak et al [30] found that an application of herbicides and herbicides with biostimulants at various rates (MCPA + dicamba, dicamba + triasulfuron, florasulam + 2,4-D) with biostimulants (Kelpak-auxins and gibberellins, Asahi-sodium p-nitrophenolate, sodium o-nitrophenolate, sodium 5-nitroguaiacolate) in wheat reduced the number of weedy species analyzed (Chenopodium album, Galium aparine, Matricaria indora, Veronica agrestis, Viola arvensis) by 55%-100% with regard to non-treated control.…”

“…A similar efficiency of herbicides and their mixtures, reaching 96%, has been reported by other authors [3,14,29,30]. Matysiak et al [30] found that an application of herbicides and herbicides with biostimulants at various rates (MCPA + dicamba, dicamba + triasulfuron, florasulam + 2,4-D) with biostimulants (Kelpak-auxins and gibberellins, Asahi-sodium p-nitrophenolate, sodium o-nitrophenolate, sodium 5-nitroguaiacolate) in wheat reduced the number of weedy species analyzed (Chenopodium album, Galium aparine, Matricaria indora, Veronica agrestis, Viola arvensis) by 55%-100% with regard to non-treated control. Research by Golian et al [16] demonstrated that Asahi SL (sodium p-nitrophenolate, sodium o-nitrophenolate, sodium 5-nitroguaiacolate) mixed with metribuzin and applied to control weeds in carrot did not affect the efficacy of weed control but increased the yield of carrot roots compared with control.…”

“…Additionally, Mystkowska [32] observed an increase in the tuber yield of potato treated with Kelpak SL (auxins and gibberellins), Tytanit (titanium), Green OK (humic substances) and Brunatne Bio Złoto (auxins and cytokinins). Other authors [30,33] claimed that the biostimulants sodium p-nitrophenolate, sodium o-nitrophenolate, sodium 5-nitroguaiacolate and auxins and gibberellins contributed to an increase in yield as well as certain qualitative and quantitative characteristics of spring wheat, potato and winter oilseed rape. According to Wierzbowska et al [17], the effect of growth regulators was influenced by weather conditions, and the applied biostimulants (Asahi SL-sodium p-nitrophenolate, sodium o-nitrophenolate, sodium 5-nitroguaiacolate; Bio-Algeen S90-extract from seawater brown algae; Kelpak SL-auxins and gibberellins) considerably increased tuber yield (by respectively 7.6%, 16.3% and 24.7%) only in the second year of experimentation when both the precipitation and temperature were lower during the growing season.…”

Seed Coating with Thyme Essential Oil or Paraburkholderia phytofirmans PsJN Strain: Conferring Septoria Leaf Blotch Resistance and Promotion of Yield and Grain Isotopic Composition in Wheat

“…Biostimulants are considered as products modifying biochemical and physiological processes in plants, neutralizing the adverse impact of weather conditions and reducing the occurrence of diseases by stimulating plant growth, strengthening plant defenses and improving nutrition efficiency leading to sustainable crop yield [6]. In this context, this study's interest focused towards assessing the effect of the biostimulants thyme oil and Paraburkholderia phytofirmans PsJN strain against SLB severity via the seed coating technique.…”

Optimization of factors of managing productive processes of winter wheat in the Forest-steppe

“…The application of tank mixtures of herbicides and biostimulators may be a reasonable way of reducing expenses. The studies demonstrate that such combination has no considerable impact on phytotoxicity of herbicides and the amount of weeds, but there is an increase in the yield of oats and winter wheat (Soltani N et al, 2015;Matysiak K et al, 2018).…”