NUTRIENT SIGNATURE OF QUEBEC (CANADA) CRANBERRY (Vaccinium macrocarpon AIT.)

作者：Marchand Sebastien; Parent Serge Etienne; Deland Jean Pierre; Parent Leon Etienne^*

来源：Revista Brasileira de Fruticultura, 2013, 35(1): 292-304.

DOI：10.1590/S0100-29452013000100034

• Compositional Nutrient Diagnosis (CND)
• isometric log ratio (ilr)
• Aitchison distance
• nutrient balance ranges

Fertilizer recommendations for cranberry crops are guided by plant and soil tests. However, critical tissue concentration ranges used for diagnostic purposes are inherently biased by nutrient interactions and physiological age. Compositional data analysis using isometric log ratios (ilr) of nutrients as well as time detrending can avoid numerical biases. The objective was to derive unbiased nutrient signature standards for cranberry in Quebec and compare those standards to literature data. Field trials were conducted during 3 consecutive years with varying P treatments at six commercial sites in Quebec. Leaf tissues were analyzed for N, P, K, Ca, Mg, B, Cu, Zn, Mn and Fe. The analytical results were transformed into ilr nutrient balances of parts and groups of parts. High-yield reference ilr values were computed for cranberry yielding greater than 35 Mg ha(-1). Many cranberry fields appeared to be over-supplied with K and either under-supplied with Mn or over-supplied with Fe as shown by their imbalanced [K vertical bar Ca, Mg] and [Mn vertical bar Fe] ratios. Nutrient concentration ranges from Maine and Wisconsin, USA, were combined into ilr values to generate ranges of balances. It was found that these nutrient ranges were much too broad for application in Quebec or outside the Quebec ranges for the [Ca vertical bar Mg] and the [Mn vertical bar Fe] balances, that were lower compared to those of high yielding cranberry crops in Quebec.

• 出版日期2013-3