pppp 



Plate 1 



■■■■"<* 



% 



^ 



1. Puddliiiu' soil with a hand harrow. Nolc two large tcrniiic hills. The lca\es of the 

 trees left standing jiiDbahh" hclji fertilize the soil. Thailand. 



^ ^-hm^lfk 



2. \\ ii\rr hull air) arc ijcin.; dn\ en i. mini aiul i^ mnd ' 'ii ijic >1icm\ rs .jl ncc Lu I lircbh l'UL tlie 



grain. 'I'hailand. 

 (Ijoth photographs courtesy of Dr. Hugh Popenoe.) 



