A buffer strip is also a grassed or planted zone which acts as a protective barrier between an area which experiences livestock grazing or other activities and a water body. Water in a canal must pass through, over, or under a check structure. The check structure opening or position is typically a function of the flow rate, and is adjusted to maintain a certain flow rate or water level. Check structures are necessary to dam the water up during low flow rates so that all turnouts in the upstream can receive water. Caused by a deficiency of an essential element.
Chlorotic leaves range in color from light green through yellow to almost white.
Claypans usually impede the movement of water and air and the growth of plant roots. While harmless themselves, coliform bacteria are commonly used as indicators of the possible presence of pathogenic organisms. The materials are assembled in a pile where moisture and heat partially decompose them in a matter of months. This occurs in many plants by the coming of winter as days grow shorter and temperatures colder. Plant roots need oxygen as well as water, and soil that remains saturated deprives roots of necessary oxygen.