Abstract
The effect of biostimulants such as Crop Booster and RR SoyBooster on dry bean under Ontario environmental conditions is not known. A total of 12 field experiments (6 in cranberry bean “Etna” and 6 in white bean “OAC REX”) were conducted at two locations (Ridgetown and Exeter, Ontario, Canada) to evaluate the effect of Crop Booster and RR SoyBooster on visible injury, shoot dry weight, height and yield of cranberry and white bean. Visible injury ranged from 0% to 7.3% in white bean and 0% to 9.4% in cranberry bean with quizalofop-p-ethyl, bentazon, fomesafen, bentazon plus fomesafen, imazethapyr and imazethapyr plus bentazon alone or in combination with Crop Booster and RR SoyBooster. The addition of Crop Booster or RR SoyBooster to herbicides evaluated had no significant effect on shoot dry weight, height, seed moisture content and yield of white or cranberry bean except with the addition of RR SoyBooster to quizalofop-p-ethyl which increased height 3.7% and the addition of the Crop Booster to bentazon which decreased shoot dry weight 12% and the addition of Crop Booster to bentazon plus fomesafen which increased shoot dry weight 17% in white bean. Based on these results, there were minimal effects from the addition of Crop Booster or RR SoyBooster to commonly used herbicides in white and cranberry bean.
Highlights
Dry bean (Phaseolus vulgaris L.) is a high value leguminous crop with nitrogen fixation ability that Ontario growers often use in rotation with wheat (Triticum aestivum L.), field corn (Zea mays L.) and soybean [GlycineHow to cite this paper: Soltani, N., Shropshire, C. and Sikkema, P.H. (2015) Responses of Dry Bean to Biostimulants Added to Postemergence Herbicides
Visible injury decreased over time for all herbicide tankmixes, there were no significant differences in visible injury among treatments evaluated
The addition of Crop Booster to quizalofopp-ethyl had no significant effect on white bean shoot dry weight, height, seed moisture content and yield
Summary
Dry bean (Phaseolus vulgaris L.) is a high value leguminous crop with nitrogen fixation ability that Ontario growers often use in rotation with wheat (Triticum aestivum L.), field corn (Zea mays L.) and soybean [GlycineHow to cite this paper: Soltani, N., Shropshire, C. and Sikkema, P.H. (2015) Responses of Dry Bean to Biostimulants Added to Postemergence Herbicides. Biostimulants have been marketed by agricultural products companies for enhancing crop growth and yield of various crops. Biostimulants are generally referred to as compounds, substances and other products that can enhance plant growth and development by increasing the efficiency of physiological process within plants when applied in small quantities to plants or soils [2] [3]. These products can include microorganisms, trace elements, enzymes or plant growth regulators [2] [3]. Al-Majathoub [10] found as much as 21% increase in tiller numbers and as much as 8.2% increase in wheat yield with biostimulants
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