| 摘要 |
PCT No. PCT/EP97/00721 Sec. 371 Date Mar. 15, 1999 Sec. 102(e) Date Mar. 15, 1999 PCT Filed Feb. 15, 1997 PCT Pub. No. WO97/34474 PCT Pub. Date Sep. 25, 1997A process for the administration of a flowable solid, semisolid, or liquid medium exhibiting a controlled release of at least one active substance to plants by means of injection using needle-free, pressure-actuated devices is characterized in that the medium comprises active substance-containing microparticles of a maximum size of 100 mu m including the following components: a) 0.5-70%-wt. of at least one active substance, b) 10-70%-wt. of at least one biodegradable polymer, c) up to 20%-wt. of formulation adjuvants.
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