To initiate a comprehensive management plan, start by doing a series of water analysis tests from all water sources and at key points in the water-distribution system.Over the years of working in multiple areas of agriculture, I have come to realize that most growers, whether they’re raising plants or chickens, lack a true understanding of the improvements available from focusing on water quality. The problem isn’t a lack of concern for water quality, but how success is defined when it comes to meeting water treatment goals. Most growers have the wrong goals. Water goals However, the goal that will yield the greatest returns for growers is making water the most important nutrient they provide to their plants. The way to successfully reach this goal is to install water-treatment systems that provide water in its healthiest form to the plants. Achieving this goal lowers production costs and increases profitability. Collecting information Water treatment purchases are generally viewed as component buying decisions (filters, chemical dosing pumps, etc). Each decision is basically a single point decision made mostly on its own merit, not on how it fits into a well thought-out plan for the growing facility. This way of thinking must change. As you make long-term decisions about the water treatment technologies to incorporate, do so with the knowledge of how each of these technologies helps your business move toward the ability to safely and effectively reuse water.Water analysis At this stage of developing a water management plan it can be beneficial to contact competent sources with expertise in evaluating water-quality concerns and the levels of improvement needed to achieve the goals available and the technologies to accomplish these goals. The focus should be on delivering water that produces the healthiest plants possible. This will lower chemical treatments and labor costs, help to minimize shrink and reduce a company’s exposure to environmental and regulatory hurdles. Management plan components When evaluating these systems and processes it is easy to revert to focusing more on attention-grabbing mechanical issues rather than the new focus of plant health. The mechanical issues related to water management are important. But in almost all cases as plant health issues are addressed, the mechanical ones will be resolved through the same solutions. A good example is in the area of filtering water in a flood or pressure irrigation system. Filtering water reduces the build-up of solids, which reduces the labor for cleaning storage tanks and nozzles, eliminates stains on floors and benches and prevents clogging of piping systems. This same problem approached from a plant health perspective might be viewed in this way. The goal is to add filtration to reduce the accumulated organic load in the irrigation water. This accomplishes reduced oxygen demand on the system preventing oxygen deprivation in the water. More oxygen is available to the roots resulting in healthier plants. Another related plant health issue is biofilm in tanks and piping systems, which acts as a reservoir for potential pathogens. Reducing the organic load in the irrigation system, which serves as a food source for biofilm, slows biofilm growth. Filtration slows but does not eliminate biofilm growth. Biofilm will grow even with very fine particle filtration. Biofilm must be addressed with an oxidizer effective at destroying it. Not all oxidizers are effective at eliminating biofilm and preventing its re-growth. Incorporating an effective water treatment system may require a finer particle filtration than would be needed to simply reduce the sludge build-up in storage tanks and the distribution systems. So, accomplishing the above goals also accomplishes the obvious mechanical goal. This same process repeats itself throughout the greenhouse as targeted solutions are developed for water-related issues. When these solutions are designed to work together in a comprehensive water management plan, they help provide a more effective line of defense. Don’t forget the environment Our industry is faced with increased regulatory oversight. As you make long-term decisions about the technologies to incorporate, do so with the knowledge of how each of these technologies helps you move toward the ability to safely and effectively reuse water. If properly planned for, this does not have to be an economic burden.
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