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Soil total N (TN) has been shown to be a useful surrogate measure of soil N supply in pasture soils. Since soil N supply can modify fertilizer N response, we hypothesized that TN would be a good predictor of the relative pasture dry matter (DM) response to applied fertilizer N across a single property. We chose a single property to exclude confounding effects from large variation in weather...
Many tree-ring-based climate reconstructions are based on the assumption that the climate reaction of trees is independent of their size. Here, we test this assumption for New Zealand kauri (Agathisaustralis), one of the longest tree ring-based proxies for the El Niño-Southern Oscillation (ENSO). The most recent kauri chronology contains a large amount of archaeological material, e.g. timber for...
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