Agronomic performances of Pak Choi grown with different soil cover

Abstract

An important aspect in the cultivation of vegetables is the quality of the product to be marketed, free from dirt and damage and the practice of mulching could be an option, but there is scarse information. The aim of this study was to evaluate the influence of mulching on the production traits of three cultivars of Pak Choi. The experiment was set up during March to May 2013 using a split plot randomized block design, with four replications. Soil cover treatments (white agrotextile, black agrotextile, black plastic, silver plastic, tifton straw and bare soil) were arranged in the plots, and three cultivars of Pak Choi (Green Pak Choi, White Pak Choi and Chingensai Natsu Shomi) in subplots. Height and diameter of shoots, number of leaves, fresh weight of the head and petiole, base diameter, dry weight of stem, petiole, and leaf were evaluated thirty-five days after transplantation. The total dry weight and leaf area were measured, and then we estimated the yield. There was a significant effect of soil cover and cultivar. In general, the cover with synthetic materials showed higher values on production of Pak Choi. The cultivar White Pak Choi was better adapted to the growing conditions, with an average yield of 57.78 t/ha.

Desempenho agronômico de mandioca de mesa manejada com irrigação e uso de cobertura plástica do solo

“…Por sua vez, o tratamento sem irrigação e com cobertura do solo, propiciou ganho de 13% na PR em relação ao tratamento sem irrigação e sem cobertura de solo (Tabela 3), incremento de produtividade idêntico ao relatado por Adjebeng-Danquah et al (2016), em colheita efetuada aos dez meses após o plantio. É importante relatar que as grandes vantagens da cobertura plástica do solo estão relacionadas ao controle de plantas daninhas e a consequente diminuição de mão-deobra para capina (ABOUZIENA; HAGGAG, 2016), aos aumentos da temperatura do solo e da disponibilidade de água e de nutrientes (ECHER et al, 2015), diminuição da erosão pela proteção do solo (LIMA et al, 2015), entre outras vantagens.…”