He is also responsible for developing programs for using the best available technology to reduce costs and improve golf course conditions and manage vendor relationships. Learn tips for creating your most beautiful (and bountiful) garden ever. Potassium does not deplete the water of available oxygen as do some of the other elements contained in fertilizers. In addition, decreased feed and water intake occurs in horses with potassium deficiency. Potassium also occurs naturally in organic fertilizer and compost sources, such as seaweed products, wood ash, and animal feeds and bedding materials. “We use potassium for the entire year,” Higgins says, “and especially prior to heavy stress periods – summer and winter. The three main numbers in fertilizer labeling represent the percentage of nitrogen (N), phosphorus (P), and potassium (K), respectively. Specifically, potassium helps maintain turgor pressure in the cells of the plant, resulting in a positive influence on drought tolerance, cold hardiness, and disease resistance. Potassium deficiency is also common in chalky or peaty soils with a low clay content. As a result, potassium deficiencies in turf may cause increased susceptibility to drought, winter injury, and disease. 2. By looking for visuals like yellowing of the edges of leaves, excessive weeds, leaves appearing to be burnt or turf diseases, these are all signs potassium is needed by your plant. Writer Bio “If a golf course can afford it, I would use a 1:2 ratio across the entire course.”, Higgins uses tissue analysis to determine potassium demand. Turfgrass requires potassium in large quantities, second only to nitrogen and is usually stored in larger quantities than required for normal plant growth. Even short periods of deficiency, especially during critical developmental stages, can cause serious decline in turf quality. Although soil tests are the best way to determine the nutrient requirements of the lawn, in some cases it can be difficult to determine anything more than a potassium deficiency. The blades become streaked with yellow, turn brown at the tips and eventually die. Along with nitrogen and phosphorus, potassium is one of the essential macro-nutrients required in the largest quantities by plants for growth and vigor. Potassium activates enzymes, is involved in photosynthesis and is very important in the regulation of small openings (stomates) on the exterior tissue of turfgrasses that are responsible for water release from the plant into the air. If the symptoms suggest potassium deficiency apply an appropriate lawn fertiliser. Plant-available potassium is constantly changing in the soil and is dependent on many factors that are interconnected. Understanding Turfgrass Nutrient Requirements1 1 A handout to supplement the pre-sentation on this topic made at Osaka, Micah S. Woods Japan, on 5 June 2012 5 June 2012 Turfgrass nutrient requirements are related to the growth rate of the grass. Potassium. The target for many turf species is above 2 percent tissue potassium with 2.5 to 3.5 percent potassium being common for healthy grass. Consumers need to be aware that terms like winterizer or summer fertilizer are more marketing terms than actual statements of a fertilizer's benefits. The amount of ⦠“Fairways and other areas get a blended fertilizer that includes some potassium in the fall.”. Potassium functions to maintain the normal acid-base (pH) balance in the blood and tissues. “Soil tests are not as representative of what’s going on in the plant,” he says. Potassium is mobile in plants and can be taken up in quantities greater than needed for optimal growth. 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