Soil water distribution and extraction by 'Tommy Atkins' mango(Mangifera indica L.) trees under different irrigation regimes

Abstract

The objective of this study was to determine the water distribution and extraction by mango variety 'Tommy Atkins' under different irrigation regimes. The treatments were: 1-Irrigation supplying 100% of ETc from flowering to fruit harvest; 2-50% of ETc from beginning of flowering to the beginning of the expansion of fruit and 100% of ETc to physiological maturity; 3-100% ETc from the onset of flowering to the beginning of fruit growth, 50% from the beginning of expansion to the start of physiological maturation and 100% during physiological maturation of the fruit; 4-100% ETc from the onset of flowering to the expansion of the fruit and 50% during physiological maturation; 5-Without irrigation. The soil water content was monitored using TDR between the end of phase I and the beginning of Phase III. The irrigation regimes caused different profiles of distribution and extraction of water through the mango tree. The extraction of water regardless of the treatment is primarily a within a distance less than 1.50 m from the plant and the first 0.50 m depth.Key words: RDI, micro-sprinklers, root system, TDR. RESUMEN El objetivo de este trabajo es determinar la distribución y extracción de agua por la planta de mango 'Tommy Atkins' bajo diferentes regímenes de riego. Los perfiles de distribución de extracción de agua fueron determinados para los siguientes tratamientos: 1-Riego suministrado al 100% de la ETc en las fases: I (inicio de la floración al inicio de la expansión de los frutos), II (inicio de la expansión hasta el inicio de la maduración fisiológica) y en la fase III (maduración fisiológica de los frutos); 2-RDI con el

Nutrient Contents in ‘Tommy Atkins’ Mango Leaves at Flowering and Fruiting Stages

“…To estimate the soil moisture with TDR, calibration equation was used according to SANTOS & MARTINEZ (2013). Obtaining the relationship between the dielectric constant values read by TDR and soil water content (θ) was performed with samples deformed in accordance with and was presented on Table 4.…”

“…The daily irrigation time used for each treatment was used according to COTRIM et al (2011), SANTOS et al (2014a, NEVES et al (2013) and SANTOS & MARTINEZ (2013), considering 0.90 as the application efficiency. These determinations were performed using IRRIMANGA software, computational tool to obtain evapotranspiration and calculation of irrigation time for mango crop management (SANTOS, 2012).…”

Sap flow in ‘Tommy Atkins’ mango trees under regulated deficit irrigation

“…Soil water conditions change when using water-deficit strategies; consequently, water conditions of plants, gas exchanges, and leaf temperature are also altered. These variables influence growth, developing, and yielding (Santos and Martinez, 2013). There is some research in the literature on the use of water-deficit strategies in mango trees grown in semi-arid regions of Brazil and how it relates to gas exchanges (Santos et al, 2016b;2016c;Santos and Martinez, 2013), to root distribution (Santos et al, 2014a), to water uptake (Santos and Martinez, 2013), to flower induction (Faria et al, 2016a), and to leaf nutrient content (Faria et al, 2016b).…”

Irrigação Com Déficit Controlado E Produtividade De Mangueira ‘Tommy Atkins’ Sob Gotejamento

“…Dentre essas, destacam-se as técnicas de irrigação com déficit controlado -RDI (Regulated Deficit Irrigation) e secamento parcial do sistema radicular ou irrigação lateralmente alternada -PRD (Partial Rootzone Drying) (SAMPAIO et al, 2010;SANTOS et al, 2015SANTOS et al, , 2017MARTINEZ, 2013).…”