Appendix to the Journals of the Senate and Assembly of the ..session of the Legislature of the State of California . come convinced that irrigation is profit-able and essential in the up-building of the section. But irrigation has ^In ascertaining the capacities of the various soils under observation in theinvestigation to retain irrigation water and the rates of percolation of the irrigationwater applied, it was necessary to make numerous technical studies which it is notdesirable to report in this bulletin. The ascertainment of the water-holding capaci-ties of the various soils and of the am
Appendix to the Journals of the Senate and Assembly of the ..session of the Legislature of the State of California . come convinced that irrigation is profit-able and essential in the up-building of the section. But irrigation has ^In ascertaining the capacities of the various soils under observation in theinvestigation to retain irrigation water and the rates of percolation of the irrigationwater applied, it was necessary to make numerous technical studies which it is notdesirable to report in this bulletin. The ascertainment of the water-holding capaci-ties of the various soils and of the amounts of moisture necessary to be present toprevent wilting have, for instance, involved the making of apparent and realspecific gravity determinations, physical analyses of the soil in the various fields,and the development and checking of special methods of volume-weight determina-tions of soils in place. In some of these studies the cooperation was received ofProfessor Charles F. Shaw, and assistants, of the Division of Soil Technology of theDepartment of Agriculture of the University of California. PLATE Fig. 1.—Weighing alfalfa hay in the field.
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Keywords: ., bookauthorcaliforn, bookcentury1800, bookdecade1850, bookyear1853
