ROTARY CROPS 



195 



of the regions of the Pampa where the most different 

 types of rural exploitation are mingled together. 

 Agricultural colonization has been carried on both 

 by small proprietors and farmers or tenants. Wheat 

 and maize seem to be permanently associated, and 

 the climate is equally good for both ; the maize crop 

 being the better if the summer is wet, and the wheat 

 crop when the summer is dry. The two cereals follow 

 each other on the same land, in rotation, the wheat 

 being helped by the constant weeding and clearing 

 which the maize requires. The colonists use oxen 

 in the work, and fatten them afterwards. 1 



Agricultural colonization in the lucerne region dates 

 from 1895 to 1905 : 



I have shown how this was bound up with the develop- 

 ment of the lucerne farms themselves. The extreme 



1 Draught animals in 1908 : at Chivilcoy, 17,000 cattle and 10,000 

 horses ; at Junin, 15,000 cattle and 6,000 horses ; at Nueve de Julio, 

 15,000 cattle and 6,000 horses. In the region of the Santa F6 colonies : 

 at Castellanos, 17,000 cattle and 54,000 horses ; at Las Colonias, 6,000 

 cattle and 35,000 horses. In the wheat belt (South of Buenos Aires) : 

 at Puan, (no cattle) 29,000 horses. At the sierras (no cattle), 14,000 

 horses. 



