Suppression of coastal heath vegetation by Eucalyptus baxteria
- EL R. DE L MOR
- Wl LLIS and D.H, ASHTON,
Leachates of leaves of different age ofPolyalthia longifolia showed different activities on growth ofAzolla. The leachate of juvenile leaves showed the highest promotion as undiluted extract, in contract to the effects of leachates of mature and senescent leaves which had this effect when four times diluted. The growth and nitrogen concent ofAzolla were highest in October at all treatments, particularly at the treatment with four times diluted leachates from senescent leaves. The lowest growth rates ofAzolla due to different treatments were found in winter and in summer.