48 TOBACCO BKEEDING. 



The following form for note taking in the field is printed on a 

 large shipping tag : 



Tobacco K. 

 U.S. P. B.J 1 



Date 



Type 



Leaves : 



Number Length. 



Width Thickness 



Shape Color 



Uniformity Rust 



Spots Gum 



Maturity Position 



Venation 



Stem: 



Height Circumference 



Length of internodes 



Suckers : 



Number Size 



Position 



Seed: 



Number of pods 



Date of picking 



Harvest : 

 1st 2d 3d 



The directions for note taking for use in making field notes 

 adopted by the Office of Plant Breeding Investigations of the United 

 States Department of Agriculture are as follows: 



In order to secure uniformity in nomenclature and note taking and promote 

 uniform methods of classification in the tobacco-breeding experiments the 

 following system has been adopted and should be closely adhered to by those 

 conducting these experiments and applied to all records made in the course 

 of these investigations : 



Nomenclature. — The word variety should be used to designate distinct, well- 

 recognized, and established kinds of tobacco ; as, for example, Sumatra, Con- 

 necticut Havana, White Burley, and Zimmer Spanish. 



The word strain should be used to designate a slight local modification of 

 a variety in which some intrinsic quality has been bred, such as tendency 

 to produce a heavier yield, improved shape of leaf, or better adaptability to 

 local conditions, as, for example, Cooley's Connecticut Havana, Connecticut 

 Sumatra, or Jones's Zimmer Spanish. 



The word type should be applied to new varieties which are selected for 

 experimental purposes and have not come into commercial use. 



Type numbers. — In the fields where selections are made several distinct 

 types may be found, and a number of seed plants should be selected for ex- 

 perimental purposes in each type. A number should also be given each type, 

 and in all records of experiments with this type it should be referred to 

 under this number. When a new type is found the list of existing type 

 numbers should be consulted, so that no two types may be given the same 

 number. For example: Variety, Sumatra; strain, Connecticut Sumatra; 

 type, 1 (Crumple). Wherever it may be desirable the type may be further 



96 



