what minerals, what locations) for each of the major macronutrients? 2.What are primary micronutrients required by plants? 3.Name and describe the two major physicalprocesses by which plant roots take up nutrients. What is the driving force for each process? Contrast how nitrate (soluble) and phosphate (low solubility) get to a plant root (discuss in the context of these two processes). What symbiotic relationship helps to obtain low solubility forms of nutrients?4.How does soil pH (consider acid and alkaline conditions) affect the availability of phosphorus.
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5.Contrast the primary sources of N versus P fertilizers. Which one do you imagine takes more energy to make?6.Draw a plant nutrient response curve (e.g. yield versus concentration of nutrient) for a plant that needs a high concentration of that nutrient. Draw another curve on same graph for a plant that is much more efficient at using nutrients and shows toxicity at a lower concentration. Label each of the “zones” on the curve.Managing plant nutrition7.To determine fertilizer needs for a plant, we need to know what is needed, how much, and in what combination.i)How do we determine what nutrient a plant is deficient in?ii)How do we determine how much of a nutrient is needed (be able to draw a figure to support this)8.Contrast soil tests that measure the “total” versus “available” concentration of a nutrient.
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