2011
DOI: 10.1590/s0100-69162011000600007
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Effect of trickle irrigation on root development of the wet bulb and 'pera' orange tree yield in the state of São Paulo, Brazil

Abstract: The aim of this study was to evaluate the effect of different microirrigation designs on root system distribution in wet bulb region, orange orchard yield and quality of orange fruits. The experiment was installed as random blocks with five treatments and four replicates in an orchard of 'Pêra' orange trees grafted on 'Cleopatra' mandarin rootstock. The treatments consisted of: one drip line (T1), two drip lines (T2), four drip lines (T3) per planting row, microsprinkler irrigation (T4) and without irrigation … Show more

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Cited by 5 publications
(5 citation statements)
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“…The rootstock Rangpur lime showed greater root growth than the 'Swingle' citrumelo under these conditions. Similar results were found by Pires et al (2011) who observed that 80 % of the roots were found in the wet bulb, from 0.20 to 0.25 m; and by Coelho et al (2002), in three different citrus rootstocks.…”
Section: Root Length Densitysupporting
confidence: 87%
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“…The rootstock Rangpur lime showed greater root growth than the 'Swingle' citrumelo under these conditions. Similar results were found by Pires et al (2011) who observed that 80 % of the roots were found in the wet bulb, from 0.20 to 0.25 m; and by Coelho et al (2002), in three different citrus rootstocks.…”
Section: Root Length Densitysupporting
confidence: 87%
“…This acclimation was also observed by Zekri and Parsons (1989), with tree roots confined to a small soil volume in arid climates, adapting well to a small volume wetted by micro-sprinklers. Pires et al (2011) concluded that the treatment with only one drip line per planting row had the highest root concentration in the wet bulb, compared with treatments with two and four drip lines. The results for root length density found in this study reinforce the hypothesis of the root acclimation effect.…”
Section: Transpirationmentioning
confidence: 99%
“…A máxima concentração radicular situou-se entre 0,5 a 2,0 m do tronco e entre a superfície do solo até 1,5m de profundidade, com maior concentração e uniformidade de raízes na linha de plantio. Pires et al (2011) verificaram que no primeiro ano após a instalação da irrigação por gotejamento em pomar de plantas adultas de laranjeira Pêra em tangerina Cleópatra houve grande concentração radicular na região do bulbo úmido e que a maior concentração de raízes ocorreu entre 0,1 a 0,3 m de distância do gotejador e até 0,25 m de profundidade. Alves Junior et al ( 2012) avaliaram sistema radicular de laranjeiras Valência irrigadas por microaspersão e verificaram que nas plantas irrigadas houve maior densidade radicular na camada de 0,15 a 0,3 m de profundidade nas plantas irrigadas em comparação àquelas não irrigadas.…”
Section: Sistema Radicularunclassified
“…Os benefícios da irrigação na citricultura podem ser diretos e indiretos, destacando-se melhorias como crescimento das plantas, floração, pegamento dos frutos, antecipação da florada, produtividade e qualidade. Apesar de ser cultura perene, Pires et al (2011) verificaram grande aumento de produtividade de laranjeiras Pêra com uso do gotejamento no primeiro ano após a instalação do sistema em pomar de plantas adultas na região sul do Estado de São Paulo. Nesta área é importante ressaltar a importância de adequação do manejo da água e da nutrição associados.…”
Section: Introductionunclassified
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