General Considerations. 11 



should be designated in the field by appropriate stakes or 

 labels, but as these are subject to many accidents and are 

 rarely durable, an additional record should be kept. A map 

 of the plantation, on which every variety is located and 

 named, is very convenient for reference, but where it is 

 desired to preserve notes of the different varieties, a book 

 or card catalogue is also desirable. If a book is used, a 

 page may be devoted to each variety, or to each individual 

 tree or plant if desired, and the names of the varieties may 

 be indexed for reference. The card catalogue is perhaps 

 best, especially for large plantations. In this method, the 

 name or number of each variety, tree or plant of which it 

 is desired to preserve notes, is written near the top of a 

 card, and the cards are arranged in a box or drawer in the 

 same order in which the names occur in the plantation. 

 The cards indicating the varieties in one row may be in- 

 closed in a rubber band. The different fruits may be sepa- 

 rated by wider cards or by pieces of thin board. The cards 

 should be large enough for recording all needed data. If 

 a tree or a variety is removed from the plantation, the card 

 corresponding to it is taken out of the box; or if one is 

 transplanted, its card is removed in like manner. Thus the 

 list is not cumbered with varieties no longer grown, and 

 shows every variety in the plantation in its proper place. 

 Where many varieties are grown a supplementary card 

 catalogue, in which each card contains the name of one 

 variety and designates its location, and in which the names 

 are arranged in strict alphabetical order, is also needed for 

 locating varieties of which the place has been forgotten. 



12. Harmful parasites and diseases. The fruit grower 

 must be watchful for these during the growing season, or 

 much harm may result before the cause is discovered. The 



