Effect of different irrigation regimes on the production and root system of tomatoes

• Autor(a) principal: Choudhury, Eliane Nogueira
• Data de Publicação: 2014
• Outros Autores: Millar, Agustin A., Choudhury, Mohammad Menhazuddin, Abreu, Tania Aparecida dos Santos
• Tipo de documento: Artigo
• Idioma: por
• Título da fonte: Pesquisa Agropecuária Brasileira (Online)
• Texto Completo: https://seer.sct.embrapa.br/index.php/pab/article/view/16625
• topic: irrigation regimes; tomato; root system; oxisol; níveis de irrigação; tomate; sistema radicular; oxissolo

This work was conducted to study the yield and root system distribution to tomato (Lycopersicum esculentum Mill) when submitted to five irrigation regimes. A randomized complete block with five treatments and five replicates was used. The treatments consisted to irrigate when soil water was depleted to -0.3; -1; -2; -3 and -5 bars matric potential levels, Production was separated into fruits with and without blossom-end rot. For commercial fruits significative difference was found between the treatments at 5% level. Yields amounted to 97, 85, 73 and 68%, in comparison to potential level of 74.8 t/ha, for the -1. -2, -3 and -5 bars irrigation treatments, respectively. It was concluded that irrigation of the variety Rossol VFN can be managed between -0.3 and -2 bars of soil matric potential, with best possibilities for lower irrigation frequency, without significantly affecting yield. It was found that 85% of the root system to tomato was concentrated in the 0 - 35 cm layer of the oxisol.