CCA Exam Soil and Water Management 100% Solved

CCA Exam Soil and Water Management 100% Solved Benefits of Manure Application - answerAddition of OM, water holding capacity, and soil nutrients What happens to nitrogen applied through manuring? - answerIt can volatilize about 35% in a week if not incorporated Roughly how much available water in/ft is in fine sand to loam respectivly - answer1in to 2in Definition of field capacity - answeramount of moisture soil can hold against pull of gravity Definition of permanent wilting point - answersoil moisture is held so tight that plants can't obsorb it Definition of plant available water - answersoil water difference between field capacity and permanent wilting point Difference in porosity between tillage systems and no-till systems? - answerTillage increases porosity temporarily and no-till increases permanently Wetting and drying and freezing and thawing does what to soil? - answerIncreases water stable soil aggregates What is surface crusting? - answerWhen raindrops fall, it breaks up the soil and finer clay particles accumulate at the top and reduce water infiltration How far can windbreaks protect soil? - answer10x height of the tree Definition of sheet erosion? - answerFilm of water forms and moves down the soil taking particles with it Definition of rill erosion? - answerHigher volume than sheet erosion Definition of gully erosion? - answerHigher volume than rill erosion What soil temp is optimum for root uptake of nutrients and water? - answer65 to 80 Armyworm notes - answerAttractive to grass cover crops and when not tilled will feed on corn Chinch bug notes - answersurvive in surface residue