BREEDING RUST RESISTANT TREES: MODERATOR'S SUMMARY 



635 





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350C. 



300C. 



2500 



2000. 



1500 



1000 



500 



AREA 



PRODUCTION 



YIELD 



* Estimated 1969 



-.4000 



3500 



3000 



YEARS 



Figure 2. Cultivated area, production and yield of wheat 

 in Mexico. 



