ISA Arborist chapter4 questions with correct answers

Antitranspirant CORRECT ANSWER Substance applied to the foliage of plants to reduce water loss (transpiration). Available water CORRECT ANSWER Water remaining in the soil after gravitational water has drained and before the permanent wilting point has been reached. Desiccation CORRECT ANSWER Severe drying out. Dehydration. Drip irrigation CORRECT ANSWER Method of minimizing evaporation and run off by applying small amounts of water through small emitters. Evapotranspiration(ET) CORRECT ANSWER Loss of water by evaporation from the soil surface and transpiration by plants. Hydrozone CORRECT ANSWER Group of plants in a landscape with similar water requirements. Infiltration CORRECT ANSWER Downward entry of water into the soil. Entry of fine particles into drainage or aeration systems. Could lead to system clogging and failure