The Response ofEucalyptus grandisto Fertilising with Nitrogen, Phosphorus, Potassium and Dolomitic Lime on a Mispah Soil Series

Climatic and Altitudinal Criteria for Commercial Afforestation with Special Reference to Natal

“…This change resulted in hardly any difference except for a slight increase of the area east of Highflats and a decrease of the small area near Cedarville in East Griqualand. It is interesting to note the low rainfall south of the Blinkwater which confirms soil observations and which has affected the results of an experiment reported by Herbert (1983).…”

Fertilization with phosphorus increases soil nitrogen absorption in young plants of Eucalyptus grandis

“…No effect or a depressive effect of P-fertilization might be expected when N status in the soil is very low because P-uptake is strongly influenced by N supply (Herbert, 1990). Increases in total height due to P-fertilization were observed 3 months after planting in soils with an adequate N supply (Xu et al, 2002), and positive responses of growth to P-fertilization have been observed in E. grandis in soils with even higher Pconcentrations than those of the soils used in this experiment (Herbert, 1983). High productivity is clearly dependent on the maintenance of a high leaf area to intercept a high proportion of available solar radiation (Cromer et al, 1993).…”

Nutrient cycling in age sequences of two Eucalyptus plantation species

“…There is currently no published evidence that nutrient removals from harvesting native forests managed on sawlog rotations would affect subsequent forest productivity (Turner, 1981;Turner and Lambert, 1986;Stewart et al, 1990;Hopmans et al, 1993), however, there is evidence within Australia and overseas, that rapidly growing short rotation Eucalyptus plantations, especially those in the subgenus Symphyomyrtus (Pryor and Johnson, 1971;Noble, 1989), could lead to nutrient depletion, particularly calcium, from the site (Ferreira et al, saligna Sm., E. nitens (Dean and Maiden) and eucalypt hybrids (Eldridge et al, 1993) as they have rapid growth rates and are known to respond significantly to management treatments such as fertilizer application (Herbert, 1983;Schonau and Herbert, 1989;Birk and Turner, 1992;Pereira et al, 1994Pereira et al, , 1996Barros and Novais, 1996). They are also often more resistant to environmental stress, such as salinity, than species from other Eucalyptus subgenera (Lambert and Turner, 2000).…”