 | 120 páginas
... PROFESSOR BIORESOURCEs Research FACILITY OFFICE OF ARID LANDS STUDIES THE UNIVERSITY OF ARIZONA TUCSON , ARIZONA ... Vernonia and Crambe are oilseed crops possessing unusual oil qualities , and are annual summer crops . | |
 | 338 páginas
In arid and semiarid areas , most of the now surviving plants usually produce hard coated seeds . ... Traditionally , establishment of a stand of rubber trees requires land clearing followed by weed control until the new trees have ... | |
 | 286 páginas
GLUCOSA 3581 Williams , A.F. Glucose from the manioc plant ; utilization of the whole root . Chemical Trade Journal . ( 1933 ) . v . ... Office of Arid Lands Studies . ... Freeding improvement of rubber yield in Guayule . | |
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