Growth and nutrient partitioning of containerized Cercis siliquastrum L. under two fertilizer regimes
2007
Zahreddine H.G. | Struve D.K. | Talhouk S.N. | Zahreddine, H.G., Department of Horticulture and Crop Sciences, The Ohio State University, Columbus, OH 43210, United States | Struve, D.K., Department of Horticulture and Crop Sciences, The Ohio State University, Columbus, OH 43210, United States | Talhouk, S.N., Faculty of Agriculture and Food Sciences, The American University of Beirut, P.O. Box 11-0236, Beirut, Lebanon | Struve, D.K.; Department of Horticulture and Crop Sciences, The Ohio State University, Columbus, OH 43210, United States; email: [email protected] | University: American University of Beirut; Faculty: Faculty of Agricultural and Food Sciences; Department: FAFS; | FAFS | [email protected]; [email protected] | Faculty of Agricultural and Food Sciences | Zahreddine, HG | Struve, DK | Talhouk, SN | Zahreddine, HG (reprint author), Ohio State Univ, Dept Hort and Crop Sci, Columbus, OH 43210 USA. | American University of Beirut
Lebanon's native flora is threatened by loss of natural habitat to rural and urban development and the increased demand of plant materials for landscaping. Despite Lebanon's floristic richness, most taxa used for landscaping are non-native. This study was done to determine if Cercis siliquastrum (L.) is amenable to container production. Therefore, six open pollinated seeds sources native to Lebanon were grown under two fertilizer rates to study growth, N, P, K uptake efficiency, and partitioning. Two-year-old seedlings were planted in 11 L containers in a 3:1 pine bark:compost substrate. Seedlings within each seed source or mother tree were grown at either 25 or 100 mg N L-1 from 21N-3.1P-5.9K water-soluble fertilizer. Seedlings of all sources grown under 25 mg N L-1 had greater dry weight than those grown at 100 mg. Nutrient loading occurred in plants under the high fertilizer rate, although total plant N, P, and K content were not affected by fertilizer rate. There were significant differences in mineral nutrient uptake and nutrient use efficiencies among the seed sources. The results show that C. siliquastrum is amenable to container production. The great variation in growth rate and nutrient use efficiency among the limited number of seed sources studied suggest that significant improvement can be made through mother tree selection and-or clonal propagation of superior individual plants within a source. © 2006 Elsevier B.V. All rights reserved.
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