Response of young 'Tahiti' lime trees to different irrigation levels

Abstract

ABSTRACT:The aim of this study was to evaluate the effect of different irrigation levels on canopy and root growth, productivity, and fruit quality of young 'Tahiti' acid lime trees. The experiment was installed in Piracicaba, Brazil in a 1.0-ha orchard plot with 'Tahiti' acid lime trees, grafted on 'Swingle' citrumelo rootstock and carried out from August of 2002 to May 2005. Each treatment was assigned to a drip irrigation level, based on ETc as follows: T1) non-irrigated, T2) 25%, T3) 50%, T4) 75% and T5) 100% of ETc determined by weighing lysimeter presented in the orchard plot. Trunk diameter and tree height were evaluated monthly. The roots were evaluated when the trees were 30 and 48 months old. The yield and fruit quality was evaluated in 2004 and 2005. The results showed that irrigation did not influence root distribution in depth, and trees irrigated with 75% and 100% ETc showed horizontal root distribution concentrated until 0.6 m from the trunk. Irrigation did not improve the quality of fruit. Yield increased in all irrigated treatment, but the most efficient yield mean per unit of water applied was the 25% ETc treatment.KEYWORDS: irrigation scheduling, Citrus latifolia Tan., evapotranspiration, root distribution. RESPOSTA DE PLANTAS JOVENS

Sistema Radicular Do Porta-Enxerto Iac 572 ‘Jales’ Sob Niágara Rosada Nas Condições Do Cerrado Goiano

“…O método de coleta das amostras foi por meio de trado tipo caneco (BOHM, 1979), com 0,10 m de diâmetro e altura de 0,20 m. Metodologia frequentemente utilizada para culturas arbóreas (ALVES JUNIOR et al, 2011, 2012, 2014COSTA et al, 2015;LIMA et al, 2016). Após retiradas as amostras foram secas ao ar por 24h, e as raízes separadas do solo com auxílio de peneira de malha de 2 mm.…”