Effects of high irrigation frequency and plastic mulching on pepper Tabasco production under drip fertirigation / Efeito da alta freqüência de irrigação e do "mulching" plástico na produção da pimenta Tabascofertirrigada por gotejamento

AUTOR(ES)

Sérgio Weine Paulino Chaves

DATA DE PUBLICAÇÃO

2009

RESUMO

Aiming to evaluate the effects of soil coverage and fertirigation frequency on pepper yield cv. Tabasco planted in two soils: Yellow Red Latossol (Sandy loam soil) and Red Argissol (Clay soil), an experiment was carried out at Universidade de São Paulo - USP, Escola Superior de Agricultura Luiz de Queiroz - ESALQ, located in Sao Paulo estate, Brazil, from May 2007 to April 2008. The experimental design was based on a randomized complete blocks in a 2 x 4 factorial scheme with four replications. The treatments consisted of the combination of two soil coverage (silvered polyethylene film and no film coverage) with four fertirrigation frequencies (24, 12, 3 e 1 / three days). The silvered polyethylene film decreased the total fresh mass of fruits per plant, total number of fruits, fruit mean mass and total dry mass of fruits for the sandy loam and clay soil. The plastic mulching didnt show effect on the dry mass percentage of fruits, water use efficiency, nitrogen use efficiency, potassium use efficiency and NPK use efficiency for the clay soil, and nitrogen use efficiency, phosphor use efficiency and NPK use efficiency for the sandy loam.However the plastic mulching increased the dry mass percentage of fruits, water use efficiency and potassium use efficiency for the sandy loam soil. Average fertirrigation frequencies didnt increase the total fresh mass of fruits per plant, total number of fruits, fruit mean mass, dry mass percentage of fruits, total dry mass of fruits, water use efficiency, nitrogen use efficiency, phosphor use efficiency, potassium use efficiency and NPK use efficiency for the sandy loam and clay soil.

ASSUNTO(S)

capsicum frutescens l. high fertirigation frequency cobertura do solo ambiente protegido (plantas) irrigação por gotejamento pimenta soil coverage plasticultura. fertirrigação

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