ISA - Arborist Certification Test - Chapter 3

o, a The majority of fine, absrobing roots of a tree are in the __ and __ horizons. compact, pore space Driving vehicles across wet soil will _____ the soil and destroy soil _____ _____. Buffering Capacity _____ ______ is the soil property that resists changes to the pH. True True/False - Negatively charged clay particles hold cations near their surface. soil structure ______ _______ modifies the effects of soil texture as the soil particles form clumps or aggregates. acidic, neutral, alkaline On the pH scale, less that 7 is ____, 7 is ____ and more that 7 is _____. 100 A pH of 5 is ____ times more acidic than a pH of 7 leaching the process in which ions of essential element wash down through the soil profile and are lost is called ______. cations Many essential elements are dissolved in soil water in the form of positively charged particles called _____. alkaline If the soil is to ______, iron an manganese may be in chemical from that is unavailable to trees. rhizosphere The ______ is the zone of intense biological activity near the actively elongating roots. sand coarse-textured soil particles buffering capacity ability to maintain pH field capacity soil after gravitational water has drained macropores tend to be air filled mycorrhizae "fungus roots" CEC ability of a soil to attract and hold cations clay fine-textured soil particles pH measure of acidity or alkalinity micropores tend to be water filled gravitational water water that drains from the macropores About us About Quizlet How Quizlet works Careers Advertise with us Get the app For students Flashcards Test Learn Solutions Q-Chat For teachers Live Checkpoint Blog