Grass and Turf Glossary
Clipping Rates: The weight of grass clippings taken from a given area of turf per mow.
Drought Tolerance: This is the ability of a turf or plant to survive in warm, dry, drought conditions. Survival is the key here. A turf can go brown and still survive, so drought tolerance does not describe the colour of the grass, brown or green, but rather whether the grass lives or dies.
Drought resistance: How long a turf stays green in a period of drought, before suffering burn off and going brown.
ET Rates (on plants and turf): Evapotranspiration rates. This is both evaporation and transpiration. Evaporation is when water, trees, plants, turf etc. rises into the sky. Transpiration is the movement of water in plants and turf, including the loss of water.
Instar stages: The stages that insects go through until they reach maturity.
N:P:K: Nitrogen : Phosphorous : Potassium; The combination of important elements that are a part of fertilisers.
Over Sowing: Over sowing is when seeds from another variety of turf are scattered over turf that is already in the ground. This allows, for example, a warm season turf to stay green in colder winters by over sowing with a cool season turf.
Recovery rate: How quickly turf recovers from wear damage.
Rhizomes: A rhizome is a horizontal part of a plant or grass that is found underground. They have short internodes and are a part of the root.
Shade Tolerance: This is how well a turf works in shaded areas. Some grass types have a better ability to work in areas that get more shade. Buffalos in general have better shade tolerance than other turf varieties, generally between 50% and 70% depening on other factors such as wear, other stress factors and mowing hight.
Stolons: These are similar to rhizomes, but extend from stems and also have internodes and grow above the ground.
Sward height: The height of the turf. In other words, sward means turf.
Thatch: Thatch is a layer underneath growing turf that consists of dead leaves. This gives turf a spongy feeling and can affect the amount of air, water and fertiliser a lawn gets.
Wear Tolerance: This is a turf's ability to withstand wear; how well it can handle traffic from people, animals, sports and other objects.