Relationships between soil and foliar nutrients in young densely planted mini-plots of Pinus radiata and Cupressus lusitanica

Identification of key soil indicators influencing plantation productivity and sustainability across a national trial series in New Zealand

“…Examination of soil concentrations indicated that exchangeable K and exchangeable Ca were significantly lower under C. lusitanica than P. radiata, indicating greater uptake by C. lusitanica. These results are consistent with the substantially greater foliar cation concentrations found in C. lusitanica than in P. radiata in this study (Davis et al, 2007).…”

Use of a process-based model to describe spatial variation in Pinus radiata productivity in New Zealand

“…This probably partly reflects the good inherent fertility of many of New Zealand's soils. Nonetheless, nutrient deficiencies have been identified for many stands (Weston, 1956;Smith et al, 2000;Davis et al 2007). Limitations are generally identified through regular foliar nutrient analyses (Payn et al, 2000) and managed through supplemental fertiliser addition where samples indicate marginal nutrient levels (Will, 1985).…”

Using vector analysis to understand temporal changes in understorey-tree competition in agroforestry systems

“…The nutritional interpretation by vector analysis was supplemented with interpretations based on critical foliage levels for radiata pine and, to a lesser extent, on soil analyses (Will, 1966(Will, , 1985Blakemore et al, 1987;Boardman et al, 1997;Payn et al, 2000;Mead, 2005b;Davis et al, 2007;Smethurst et al, 2007).…”