Bulletin of the of Agriculture . orm-ance-record trees from higher lying orchards or cultivated possible precautions were taken to provide against causes of indi-vidual-tree differences other than those resulting from individual-tree variability. In the beginning it was considered most important to study theindividual-tree variability within the Washington or best strain ofthe variety rather than to compare the behavior of the individualtrees of the different strains. Later it was found to be equally impor-tant to consider the differences between strains arising from bu
Bulletin of the of Agriculture . orm-ance-record trees from higher lying orchards or cultivated possible precautions were taken to provide against causes of indi-vidual-tree differences other than those resulting from individual-tree variability. In the beginning it was considered most important to study theindividual-tree variability within the Washington or best strain ofthe variety rather than to compare the behavior of the individualtrees of the different strains. Later it was found to be equally impor-tant to consider the differences between strains arising from budvariations; therefore, plats selected subsequently were located mainlyfor the purpose of comparing the behavior of various strains of thevariety. Inasmuch as the individual-tree performance-record workwith the Washington Navel orange was, so far as known, the firstinvestigation of this character with any citrus variety, the locationof the plats was made without the knowledge which has since been Bui. 623, U. S. Dept. of Agriculture. Plate
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Keywords: ., bookcentury1900, bookdecade1910, booksubjectagriculture, bookyear
