TY - JOUR
AU - Schoettle,  A.
AB - In white pine ( Pinus strobus ) seedlings grown in five forest soils from New York State, net photosynthetic capacity (Amax) plant -1 was correlated with total foliar N plant -1 ( r 2 =0.57), but was more highly correlated with total foliar P plant -1 ( r 2 =0.82). There was no relationship ( r 2 <0.01) between Amax (g leaf) -1 and foliar N (g leaf) -1 for the pooled data set, but there was a significant ( P <0.001), but weak ( r 2 =0.20) positive relationship between Amax (g leaf) -1 and foliar P (g leaf) -1 across all soils. However, within two of the five soils leaf N concentration was a significant ( P <0.05) determinant of photosynthetic capacity. Due to differences in soil nutrient availabilities a large range in foliar P:N ratio (0.02–0.15) was observed, and the proportion of leaf P:N appeared to control Amax (g leaf N) -1 . Whole plant nitrogen (NUE) and phosphorus (PUE) use efficiencies were well correlated with whole plant P:N ratio. In addition, NUE was well correlated with Amax (g leaf N) -1 and PUE was well correlated with Amax (g leaf P) -1 . However, NUE was not well correlated with PUE, and Amax (g leaf N) -1 was not well correlated with Amax (g leaf P) -1 . These results indicated that P and/or N limitations were important components of photosynthetic nutrient relations in white pine grown in these five soils and suggest that both P and N and their proportions should be considered in analyses of photosynthesis-nutrient relations.
TI - Role of phosphorus and nitrogen in photosynthetic and whole plant carbon gain and nutrient use efficiency in eastern white pine
JF - Oecologia
DO - 10.1007/BF00380920
DA - 1988-10-01
UR - https://www.deepdyve.com/lp/springer-journals/role-of-phosphorus-and-nitrogen-in-photosynthetic-and-whole-plant-S8aLEgBrDz
SP - 25
EP - 33
VL - 77
IS - 1
DP - DeepDyve
ER -