Does submerged vegetation have an effect on zooplankton communities?
JOHNSON, MATT (Lars Pierce): A cost benefit analysis of soil test kits designed to improve fertilizer management. Abstract: Current fertilizer practices are loading the soil of the Salinas Valley with nitrogen. New fertilizer management aimed at slowing the nitrogen leached into water tables and reducing economic loss due to excess or lost nitrogen is very important. A study was conducted on four fields growing romaine lettuce in the Salinas Valley of California to test and implement an effective nitrogen fertilizer application. Using Pre-side dress Nitrate testing kits (EMQuant) the soil of each treatment field was tested to determine the amount of fertilizer that should be applied to each site. The control fields were fertilized using conventional farming practices from the preceding year and the farmer’s knowledge of local weather conditions. A t-test comparing percent of plants harvested, carton weights and leaf nitrogen between control and treatment showed that the mean values are
