Manejo de irrigação para otimização do rendimento e qualidade de frutos de tomateiro em sistema de plantio direto

Abstract

Palavras-chave: Lycopersicum esculentum Mill., potencial de água no solo, ºBrix, pH. MOREIRA, J. A. A.; CARDOSO, A. F.; COSTA, L L.; RODRIGUES. M. R.; PEIXOTO, N.; BRAZ, L. T. IRRIGATION MANAGEMENT TO OPTIMIZE THE YIELD AND FRUIT QUALITY OF TOMATO CROP IN NO TILLAGE SYSTEM ABSTRACTThere is much information on the adequate soil water matrix potential for returning irrigation in conventional soil tillage systems; however there is not enough information on the best soil water matrix potential for no-tillage production systems. This work aimed to study the effect of five irrigation levels on yield, soluble solids, and fruit acidity of the Hypeel tomato, cultivated for industrial processing and cropped on no-tillage system in Yellow Latosol. The experiment was carried out on a randomized block design with five treatments and four replications. The treatments consisted in different soil water matrix potentials for returning irrigation (m at 13cm of soil depth): -15, -30, -45, -60 and -75 kPa. The results obtained showed that the soil water matrix potential of -28.5 kPa resulted in maximum yields for

Tomato yield as a function of water depths and irrigation suspension periods

“…The results of yield corroborate those found by Koetz et al (2008), Moreira et al (2012) and Silva et al (2018), in Cerrado area of Jataí, Ipameri and Morrinhos in Goiás, with the hybrid 'Heinz 9498' , cultivar 'Hypeel' and hybrid 'BRS Sena' , respectively. These authors concluded that, under water deficit, tomato yield is compromised.…”

“…Water replacement in the soil by irrigation, in appropriate amount and time, is decisive for success of tomato crop because water is one of the factors that most limit the development, yield and industrial quality of tomato fruits (Koetz et al, 2010;Moreira et al, 2012;Nangare et al, 2016).…”

Irrigation Depth and Nitrogen Fertilization on Production and Quality of Cherry Tomatoes

“…Thus, irrigation should be adequately managed respecting the water requirement of the crop during its cycle, and the estimation of evapotranspiration is important in this determination (Xie & Zhu, 2013). Recent studies have been carried out to evaluate the effects of drip irrigation depth on productivity and/or quality of tomato fruits, be it for industrial processing (Moreira et al, 2012;Silva et al, 2013) or for in natura consumption (Campagnol, Abrahão, Mello, Oviedo, & Minami, 2014;Brito et al, 2015). However, studies correlating irrigation depth with the production and quality of cherry tomatoes are still scarce.…”

Necessidade hídrica e produção do tomateiro para processamento industrial, em resposta a manejos e épocas de suspensão da irrigação

“…Os indicadores para determinar o momento de irrigar e a quantidade de água a ser aplicada nas culturas, podem ser agrupados em indicadores de manejo com base na planta, no solo e no clima (FRIZZONE et al, 2012;SEDIYAMA;VILLA NOVA, 2013). O manejo da irrigação no tomateiro industrial depende da textura do solo, sua capacidade de retenção de água, cultivar, condições climáticas e do sistema de irrigação SILVA, 2007;MOREIRA et al 2012).…”

“…O estádio de frutificação do tomateiro é o mais sensível à deficiência hídrica no solo, em que irrigações inadequadas comprometem o rendimento e a qualidade de fruto (PRIETO, 1997;KOETZ et al, 2010;BECKLES, 2012). Para melhorar a qualidade dos frutos é conveniente reduzir o intervalo das irrigações, diminuir a quantidade de água na fase de maturação dos frutos e antecipar a última irrigação antes da colheita (KOETZ et al, 2010;LOPES, 2010;MOREIRA et al 2012), embora tais práticas têm ocasionado menor produtividade em função do deficit hídrico na cultura (PATANÈ; COSENTINO, 2010; PATANÈ; TRINGALI; SORTINO, 2011).…”