' 600 

 I 



IRRIGATION APPLICATION 



wax CAPACITY OF SYSTEM 



^'TDS 



^—^ 



JAN ' Fie ' MAR APR ' MAY ' JUN ' JUL ' AUG ' SEP ' OCT ' NOV ' DEC 



968 

 FIGURE 10- VARIABILITY OF FLOW. NUTRIENTS.AND TOTAL DISSOLVED SOLIDS FROM A 

 FLOODED TILE DRAINAGE SYSTEM 



10000 

 7500 



IRRIGATION APPLICATIOrti ^^^ - —j -^>-^ 



JAN 



MAR 



APR MAY 



AUG 



SEP 



OCT 



NOV 



DEC 



10 - 

 a 



05 i 







6000 



4500 e 



JUN JUL 

 1966 



FIGURE II- VARIABILITY OF FLOW. NUTRIENTS. AND TOTAL DISSOLVED SOLIDS 

 FROM A PERIODICALLY IRRIGATED TILE DRAINAGE SYSTEM 



Areal Variability 



Nutrient concentrations and flows were found to vary 

 according to the location of Individual systems and also In 

 drainage composited according to major tiled areas. 



Individual Systems 



Reconnaissance Investigations conducted In 1966 led to the 

 discovery of wide differences In flows and nutrient 



51 



