. Citrus fruits; an account of the citrus fruit industry, with special reference to California requirements and practices and similar conditions . wer, who should determine whichtrees, if any, belong to unprofitable types and top-work 1H. Winkler, Uber Propfbastarde und Pflanzliche Chi-maren, Ber. Deuts. Bot. Ges., 25: 568-576. E. Baur, Propf-bastarde, Periklinalchimaren und Hyperchimaren,Woe. a7., 27:603-605. 124 Citrus Fruits them to the most desirable tyi)es. In this way the aver-age cost of production may be greatly reduced. Thegreat need for a stufly of the performance of individualcitrus
. Citrus fruits; an account of the citrus fruit industry, with special reference to California requirements and practices and similar conditions . wer, who should determine whichtrees, if any, belong to unprofitable types and top-work 1H. Winkler, Uber Propfbastarde und Pflanzliche Chi-maren, Ber. Deuts. Bot. Ges., 25: 568-576. E. Baur, Propf-bastarde, Periklinalchimaren und Hyperchimaren,Woe. a7., 27:603-605. 124 Citrus Fruits them to the most desirable tyi)es. In this way the aver-age cost of production may be greatly reduced. Thegreat need for a stufly of the performance of individualcitrus trees was emphasized by the writer in 1910. Sincethen many such studies have been made, by far the mostcomprehensive of which are those of A. D. Shamel.^ Out of a mass of ma-terial the follow-ing condensedquotations havebeen selectedfrom the studiesof J. II. Norton/formerly Super-intendent of theCitrus Experi-ment Station atRiverside: The Navelorange grove —Sectorial chimera of Valencia orange. from which the following dataare taken is located in West Highlands, San BernardinoCounty. The trees are the same age and the soil condi-. 1 Coit, J. Eliot, The Relation of Asexual or Bud-Mutation tothe Decadence of California Citrus Orchards, Rpt. 37thCahfornia Fruit Growers Convention, 1910, p. 32. 2 Shamel, A. D., A Study of the Improvement of CitrusFruits through Bud Selection, U. S. Dept. of Agriculture,Bureau Plant Industry, Circular No. 77, 1911. 3 Norton, J. H., Variations in the Productivity of CitrusTrees, California Cultivator, Vol. XL, No. 10, 1913. Improvement of Citrus Trees by Breeding 125 tions uniform. This grove contains 1525 trees planted90 to the acre. The trees are about 16 years old and thegrove is considered somewhat above the average in pro-ductiveness, yet the trees vary in yield from nothing to426 pounds of fruit per tree. The following is the annual expense of this grove pertree: General care including taxes, water, pruning, and fumigating, $ Int
Size: 1620px × 1541px
Photo credit: © Reading Room 2020 / Alamy / Afripics
License: Licensed
Model Released: No
Keywords: ., bookcentury1900, bookdecade1910, booksubjectcitrusfruits, bookyea
