312 



SOUTHERN FIELD CROPS 



time of painstaking, trained men, from whom farmers will 

 find it more profitable to buy pedigreed seed than to 



1st YEAR 



SELECT PLAdT^T). 



20YEAR 



JoYEAR 



4thYEAR 



SthYEAR 



StaCT PLANT 



SELCCT PLANT 



Pig. 145. — Diagram showing Method of Selecting Cotton. 



attempt elaborate plant-breeding in connection with ordi- 

 nary farm work. 



280. Size of seed for planting. — Several experiments 

 have shown that by separating and planting only the 

 heavy seed, the percentage of germination is notably 

 increased. A better stand results and a larger yield is 

 sometimes obtained. 



It does not follow that because the largest seed within a given 

 variety are superior to the smaller seed, that variety is best which 

 has the largest seed. Indeed the opposite is often true ; the 

 high percentage of Hnt that is frequently found in varieties with 

 small seed often makes them more productive of lint than varie- 

 ties with large seed. 



