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Risultati preliminari di una prova di concimazione nell'arancio «Washington navel»

Deidda, Pietro and Casu, Mario (1981) Risultati preliminari di una prova di concimazione nell'arancio «Washington navel». Studi sassaresi: organo ufficiale della Società sassarese di Scienze mediche e naturali. Sez. 3: Annali della Facoltà di Agraria dell'Università di Sassari, Vol. 28 (1980-1981) , p. 81-88. ISSN 0562-2662. Article.

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Abstract

In this paper are reported the results of 4-year research on the effects of differential N, P, K treatments on young «Washington navel» orange trees. The following treatments were compared: A - Control; B - Nitrogen fertilization at rate of 60 Kg/ha per year (N); C - Nitrogen and phosphorus fertilization at rates, respectively, of 60 Kg/ha and 120 Kg/ha per year (NP); D - Nitrogen and potassium fertilization at rates, respectively, of 60 Kg/ha and 90 Kg/ha per year (NK); E - Nitrogen, phosphorus, and potassium fertilization at rates, respectively, of 60 kg/ha, 120 kg/ha, and 90 Kg/ha per year (NPK). The results evidenced that 4 year later the start of the research the different treatments did not influence tree growth, while N and Mn content of the leaves was increased by NP and NPK treatments. No difference was found between N, NK, and NPK treatments on the average yield, that was reduced in NP treatment and in the control trees. As for as the fruit quality is concerned, a higher juice percentage was found in fruits from the control trees, while total soluble solids were increased by treatments NP and NPK.

Item Type:Article
ID Code:2074
Status:Published
Refereed:Yes
Uncontrolled Keywords:Orange trees, «Washington navel», loaming
Subjects:Area 07 - Scienze agrarie e veterinarie > AGR/03 Arboricoltura generale e coltivazioni arboree
Divisions:001 Università di Sassari > 01 Dipartimenti > Economia e sistemi arborei
Publisher:Università degli studi di Sassari, Facoltà di Agraria - Gallizzi
ISSN:0562-2662
Publisher Policy:Depositato per gentile concessione dell'Editore Gallizzi
Deposited On:18 Aug 2009 10:06

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