Technical Bulletin, Issue 472U.S. Department of Agriculture, 1935 - Agriculture |
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Common terms and phrases
_do_ 12 plants planted 1928 new growth 2-foot spaced plants 3-year-old plants apical and basal apical portion Ariz Asclepias subulata plants August Baja California Bard basal portions Blewett centage Computed acre yield cultivated plants Date of analysis dormant period dry plant material dry weight due to ratooning growth at age harvested and age harvested in January Height Stems Rubber Holtville Inches Number Percent increase individual plants insects July material Computed acre mean percentage mean rubber content months Number of plants number of stems Number Percent January percentage of rubber periods of plant plant activity plant material Computed plants growing plants harvested plants of Asclepias plants were harvested pollination pollinia pollinium pounds Range in rubber root crown rows spaced rubber determinations rubber percentage rubber recorded samples sections seedlings Sonora station plants Stems Rubber content stored material successive crops unthinned plants unthinned rows wild plants yield of dry yield of rubber