Reducing the Build-up of Resistances on the Farm

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Whether it is the result of water quality or the lack of rotation of pesticides on the farm, weeds and diseases are becoming more and more resistant to the active ingredients in pesticides. 

Previously, we have examined the effect of water hardness on the efficacy of burn down and desiccation, but water quality can also cause herbicides to be less effective on certain hard-to-kill species of weeds, ultimately leading to resistance. Continue reading to find out how to improve your herbicide efficacy with a simple “pHix.”

We will also be exploring the effect of elicitors – compounds which activate chemical defense in plants – to help enhance the effectiveness of certain fungicides, such as mono-site strobilurins.

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Biostimulants: PGRs and PGSs

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Plant growth regulators (PGRs) and plant growth stimulators (PGSs) are naturally-occurring or synthetic compounds that, when applied to plants, modify their physiological processes, and growth and development habits. In plant cells, they stimulate specific enzymes or pathways and help regulate metabolism.

The term “PGR” is widely used in Western Canada to refer to products that are sprayed on wheat to shorten the height of the crop, while PGSs are designed to be incorporated into a well-balanced nutrition program to achieve a better uptake of nutrients, enhanced growth and development, better seed, fruit or tuber set, improved crop standability and more. Producers looking to preserve yield and profitability are encouraged to take a closer look at PGSs.

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Biostimulants: Humates

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The Green Revolution of the 1960s sought to greatly increase agricultural production through the introduction of high-yield crops, chemical fertilizers, and synthetic herbicides and pesticides. With these new advancements, it was suddenly possible to grow more food on the same number of acres, to better meet the needs of a growing global population. 

One thing that became somewhat overlooked during the Green Revolution (and the decades that followed) was soil organic matter. However, we are finally starting to recognize the value and impact that soil organic matter content has on crops, and actions are being taken to improve it.

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Getting to the Root of the Problem

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Photo credit: Chatterton et al., 2017

Root rot and clubroot are two serious diseases which can, at best, cause yield losses and, at worst, cause premature plant death. While clubroot is a disease solely affecting brassica crops, such as canola, root rot can take hold in cereals, pulses, canola and other field crops when conditions are right and pathogens present.

Managing these diseases can be challenging and require a multi-pronged approach that includes planting disease-resistant seed, longer crop rotations, fungicide application and vigilant scouting. OMEX has a wide range of products that can be used concurrently with your root rot and clubroot management tactics to promote robust, healthy roots, mitigate plant stress and correct nutrient deficiencies throughout the growing season.

The image on the right shows the difference in early-season growth and development between a root rot-infect plant (left) and a healthy plant (right).

Let’s get to the root of the problem, shall we?

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