Turfgrass Management Terms M

Macronutrients – essential nutrients plants need in the large amounts. The three primary macronutrients: nitrogen, phosphorus and potassium, and are the main fertilizer ingredients because plants need them in the largest quantities

Marcelling - undesirable washboard or wavy pattern on top of turf caused by reel mowers, generally due to mowing at too high a speed. Sometimes called bobbing. 

Mat - undecomposed mass of roots and stems hidden underneath green vegetation. Associated with sponginess or fluffiness in turf

Matting - process of working topdressing, fertilizers or other materials into a turfgrass area with drag mats

Membranous - thin, like a membrane

Microenvironment - area in the immediate vicinity of the turfgrass plant from the surface to the depth of root penetration into the soil

Micronutrients – essential plant nutrients needed in small quantities, commonly called trace elements. Micronutrients like iron, manganese, and zinc are unavailable in high-pH soil, and nutrient deficiencies result

Microorganisms - small organisms such as bacteria and other minute entities; usually invisible to the unaided eye

Mildew - disease in which the causal fungus forms a coating over the surface of plant parts. The coating, which is a mycelial growth, is usually thin and whitish. There are two types of mildew: downy and powdery

Mixture, seed - combination of seeds of two or more turfgrass species

Mower - machine used to cut lawn grass. Before mowers were invented, lawn grass was shortened by scythes or grazing animals. The lawn mower was invented by English inventor Edwin Beard Budding, who patented the first lawn mower in 1830. Over the years, they have evolved into many forms. Some are still like the Budding mower and are pushed manually. Reel, or cylinder, mowers have a rotating cylinder comprised of several blades that chop the grass with a scissor-like cut. Others are powered by electric motors or gas engines and usually accomplish the cut via a single, horizontally rotating blade. They can be push-from-behind mowers or riding mowers. The latter category includes both sit-down and stand-on varieties 

Mulch - consists of grass clippings, leaf debris, straw, netting, and burlap that is chopped by the mower and left to decompose on the lawn. In addition, it can be spread over seeded or stolonized areas to protect them from erosion, moisture loss, and temperature extremes as well as to enhance germination and growth. By mulching clippings instead of bagging them, the mulch returns much needed nutrients to the grass, reducing the need to fertilize 

Mulching blade - commonly called a “3 in 1” or an “all-purpose” blade, the mulching lawn mower blade is intended for use on lawns where the grass will be returned to the ground to decompose. They often have a curved shape and an extra cutting edge and are designed to lift the cut grass up toward the deck of the mower so that the clipping is cut several times before it falls to the ground 

Mycorrhizal fungi – natural microscopic organisms that live on plants roots in a mutually beneficial relationship that enhances root health and improves a plant's ability to take up water and nutrients. Mycorrhizae can be added to fertilizer and seed to help replenish soil

 

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