c 



a> 

 u 



Q. 



D 

 H 

 V) 



O 



o 



CO 



AREA A 



SOIL DEPTHS 



1 \r- 



10 



3-6 in. 



15-18 in. 



M2 in. 



1/3 atm. 



7/1 



8/1 9/1 

 DATE 



POLYETHYLENE MULCH 



15 atm. 



14 - 



^ 12 - 



c 

 a> 

 u 



w 



e 

 o. 



— 10 



LU 

 QC 

 D 



O 



o 



CO 



8 - 



7/1 



8/1 



9/1 



10/1 



DATE 

 HAND WEEDED 



Figure 7B. — Periodia monthly soil moisture levels under two treatments. 



