Evaluación de coberturas orgánicas y plásticas para el control de malezas en tomate (Lycopersicon esculentum Miller).

Abstract

Three organic mulches were evaluated: pine sawdust, sugar cane dry-bagasse, rice chaff, along with two plastic coverings: Black plastic, gray plastic and a relative control. Trifluralin was applied in pre-sowing. Hilling was applied 15 days-after treatment and weeds were controlled manually 50 days-after treatment. Seedings from Peto 98 were obtained from a greenhouse. A completely randomized block design with four repetitions was used. The higher incidence of weeds was found when using organic mulches this affected the yields of fruits. The higher return was obtained with the plastic coverings.

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“…Segundo Ronchi et al, (2010), as plantas daninhas competem com as plantas cultivadas por água, luz e nutrientes, podendo reduzir sua produtividade. Interferência das plantas daninhas sobre o tomateiro e os benefícios trazidos pela cobertura do solo para a produtividade também foram observados por Raina et al (1999), Talavera & Padilla (2000) e Singh et al (2009). Para Sampaio et al (1999) e Bogiani et al (2008), entretanto, em experimentos realizados com tomate do grupo Santa Clara em um solo Podzólico Vermelho-Amarelo câmbico e com o híbrido Duradouro em um solo Argisolo Vermelho, respectivamente, o uso da cobertura do solo com plástico preto não influenciou a produtividade da cultura.…”