# Shared Flashcard Set

lab 10
lab 10
11
Agriculture
Undergraduate 4
11/28/2016

## Cards Return to Set Details

Term
 the purpose of this lab
Definition
 to become familiar w/ 2 Software Packages for Soil Fertility and Nutrient Management
Term
 UGFERTEX
Definition
 an expert system designed to provide lime, fertilizer, and animal waste recommendations for a specific crop based on soil test results.
Term
 The Georgia P Index
Definition
 a tool to assess the risk of phosphorus loss from a field.
Term
 UGFERTEX is based to a great extent on...
Definition
 the Georgia Soil Testing Handbook
Term
 some things UGFERTEX can do
Definition
 1. Calculate N, P2O5, K2O, Ca, Mg, S, micronutrients and lime requirements for aselected crop based on soil test results, the soil management group, and a yieldlevel obtainable with good management.2. Modify the nutrient requirements based on the farmer's actual yield goal, previouscrops, and presence of irrigation.3. Estimate P2O5 and K2O additions required to raise soil test levels the number ofindex units entered by the user (the default is 0)4. Calculate the total nutrient requirement based on 1, 2, and 3.5. If manure is to be applied, calculate the available nutrients in manure, calculatethe rate of manure to apply, and determine the amount of additional commercialfertilizers required.6. Provide additional comments to aid in timing and management of nutrientapplications.7. Provide a graphically detailed printout of the analysis and nutrientrecommendations (commercial fertilizer, manure, or combination of both) forfield records .
Term
 Loss of bioavailable P to surface waters is of concern because...
Definition
 it can accelerate eutrophication in lakes and streams ofthe state.
Term
 the main pathways of P loss that the P index considers
Definition
 I) soluble P in surface runoff,II) particulate P in surface runoff,III) soluble P in leachate.
Term
 The total risk of P loss from afield is computed by adding...
Definition
 the risk from each of the three pathways.P Index = Risk of Sol. P in Runoff + Risk of Partic. P in Runoff + Risk of Sol. P in Leachate
Term
 Water-soluble P
Definition
 phosphorus that passes through a 0.45-:m filter.
Term
 Particulate P
Definition
 phosphorus that does not pass through a 0.45-:m filter
Term
 Soluble P in Leachate
Definition
 Soluble P present in water percolating through the soil profile; this can contaminate a shallowwater table or tile water directly connected to surface water.
Supporting users have an ad free experience!