102 PHILIPPINE AGRICULTURE 



season is likely to give the largest crop, but it is usually 

 more profitable to cultivate only three times. An experi- 

 ment in New Hampshire showed that the crop was : 



17.1 bushels per acre, without cultivation. 



69.7 bushels per acre, deeply cultivated, 5 times. 



79.1 bushels per acre, shallowly cultivated, 5 times. 



80.6 bushels per acre, shallowly cultivated, 14 times. 



When the soil is first cultivated, it should be kept flat ; 

 but after the plants are a meter high, it is better to throw 

 the soil up somewhat around them. Healthy maize 

 grows most rapidly during the week or two after it is 

 i meter high. At this time vigorous plants grow more 

 than 10 cm in a day. 



