PLSC 220 Lecture Notes - Lecture 3: Crop Rotation, Nitrogen Cycle, Tillage
Document Summary
Dr. tanio - 21% multiple choice and ll in the blank. Dr congreves - 21% multiple choice and short answer. ** know the 3 processes with nitrogen loss for the exam, what can you do to minimize to reduce the loss. Only at a certain time related to the water budget. Water budget is driven by ppt and evapotranspiration. Once the water moves past the root zone it is considered leaching. Sandy soil does not hold water, you can reach the eld capacity way faster. Clay are able to hold a lot more water so they take longer to reach the eld capacity. More vegetable production is done on sandy or loamy soils. It is in chemical equilibrium with ammonium. When it turned to a gas molecule it can escape. Dependent on the ph for driving that relationship, high ph high ammonium = high loss of nitrogen. As it mineralizes it goes to ammonia.
