INCREASE OF MAIZE CROPS 197 



tural belt at the foot of the Sierras de San Luis and de 

 Cordoba. They have less suitable climatological con- 

 ditions, but they have the advantage of greater stability, 

 as the breeders do not dispute the land with them. 



While agricultural colonization has been an aid to 

 pastoral colonization in the north-west of Buenos 

 Aires, it tends to displace breeding, or restrict its sphere, 

 in the north-east and the south. Maize-growing started 

 on the banks of the Parana, where it was already 

 paramount in 1889, between Campana (north of Buenos 

 Aires) and San Nicolas. In 1895 it advanced up the 

 Parana as far as the Santa Fe province (Constitucion) and 

 spread over the interior for some sixty miles in the 

 Salto department. In the next few years it made 

 rapid progress toward the west and north-west, covering 

 the departments of Pergamino, Rojas, and Colon, and 

 part of General Lopez, San Lorenzo, and Constitucion 

 in the province of Santa Fe. 



Export of Argentine maize on a large scale began in 

 1895. Flax-growing was not added to maize until 

 1900. 

 The heavy land requires a good deal of harrowing, 



