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Type: Artigo de evento
Title: Yield And Quality Of Fruits Of Pera Orange Trees Grafted Onto Sunki Mandarin Under Different Wetted Areas Applied By Localized Irrigation Systems, In São Paulo State, Brazil
Author: Pires R.C.M.
Quaggio J.A.
Silva A.L.B.O.
Barbosa E.A.A.
Abstract: The Brazilian citrus industry is the largest producer and exporter of orange juice in the world. The occurrence of some diseases and the need to achieve high yields has contributed to the increasing of the use of irrigation in citrus orchards in Brazil. In this context, trickle irrigation has been strongly recommended and adopted. For an adequate use of this system it is necessary to study important parameters, such as different wetted areas. Thus, the aim of this work was to evaluate the effect of different wetted areas applied by localized irrigation systems in yield and quality of fruits of Pêra orange. The experiment was installed as random blocks with five treatments and four replicates in an orchard of Pêra orange trees grafted onto Sunki mandarin rootstock between 2009 and 2012. The treatments consisted of: one (T1), two (T2) and four (T3) drip lines per planting row, microsprinkler irrigation (T4) and without irrigation (T5). In the first cycle the treatments didn't influence the fruit yield and the juice quality. The yield was improved by T2 and T3 in the second cycle and by T4 in the third cycle. Considering the total area the treatments didn't influence the total of soluble solids content. The yield in T2, T3, and T4 increased by 29%, 23%, and 22%, respectively, in comparison to the non-irrigated (T5). Similar results were observed in the juice quality. It was observed that the use of two drip lines (T2) and micro-sprinkler irrigation (T4) increased soluble solids per area by 5.6% and 7.0%, respectively.
Editor: American Society of Agricultural and Biological Engineers
Rights: fechado
Identifier DOI: 
Date Issue: 2014
Appears in Collections:Unicamp - Artigos e Outros Documentos

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