-3- 
Summary and Conclusions 
Commercial apple growing has become a highly developed 
and highly specialized industry. During the last tow dec¬ 
ades it has made the greatest strides in regions where it 
has been recognized as such. 
Co-operative grading, packing, warehousing, and market¬ 
ing have enabled the apple grower to sell his product on the 
world’s best fruit markets in competition with citrus and 
other fruits* 
The commercial apple crop in the United States repre¬ 
sents 40 to 60 per cent of the total crop, the average for 
the past six years being 47 per cent. In 1931 it was 63 
per cent of the entire crop reflecting the importance of 
the commercial orchards in the Pacific Northwest. 
Commercial apple growing in the Northwest reached a 
high degree of development on newly irrigated land because 
of the high acre value of the product or the lack of com¬ 
petition of squally valuable crops. 
In the apple growing regions of the Northwest there 
is a definite correlation between commercial orchard plant¬ 
ings and the building of irrigation projects. 
The most important commercial plantings in the United 
States were made during the following years: 
1860-1875 New York. 
1885-1895 Pennsylvania and Virginia, 
1890-1900 Qzar&s and Prairie States* 
1900-1910 Western and Northwestern States. 
Very few important plantings have been made since 1910, 
