334 



MAIZE 



CHAP. 

 VII. 



ent breeds. Seasonal conditions affect the various breeds 

 differently, and as it requires a ten-year average of the 

 various factors to determine the character of the climate, so 

 also a ten-year average is desirable for determining accurately 

 the relative yields of different breeds. But some breeds can 

 be discarded after two seasons, and many before the expiry 

 of ten years, so even without the full ten-year record a table 

 of relative yields has its value. 



Breed tests have been conducted on the Government Ex- 

 periment Farm, Potchefstroom, since 1905-6, and the results 

 are summarized in Tables XLV and XLVI. 



Table XLV. 

 SUMMARY OF POTCHEFSTROOM BREED TESTS. 



The following brief notes giving some idea of the method 

 followed in conducting these tests are taken from the Reports 

 of Mr. Holm (1) and Mr. Bell (1) :— 



Definite comparative experiments with maize were com- 

 menced on this farm in the season 1904-5. 



Breeds. — The crops were grown on land which had, during 

 the previous year, produced mangels or potatoes, which received 

 from 8 tons to 10 tons dung per acre, and about 300 lbs. of a 



1 The low position held by this breed at Potchefstroom is not maintained in 

 some other parts of the country ; it does not like low -lying, damp ground, and 

 does better in localities with less soil-moisture. 



