Abstract
Vegetable development and productivity are influenced by several factors, including the nutrient amounts available. Providing adequate nitrogen favours vegetative growth and promotes increased productivity, in addition to providing greater succulence and improving leaf quality. This work evaluated the effect of nitrogen doses and sources on arugula culture development and productivity. The experiment was conducted on the experimental farm at the State University of Goiás, Ipameri campus, in the municipality of Ipameri, Goiás state (GO). The experiment used a 2 × 5 factorial randomized complete block design, with two sources (normal urea and coated urea), five nitrogen doses (0, 60, 120, 180 and 240 kg ha-1 of N) and four replicates. Plant height, stem diameter, leaf number, fresh shoot matter, dry shoot matter and productivity were evaluated. The results obtained here suggest that nitrogen sources do not influence arugula culture development, but nitrogen doses influence the arugula culture’s productive characteristics.
Highlights
Arugula has been gaining prominence in many salad preparations by imparting dark green colour and unrivalled flavor
This experiment was conducted on the experimental farm of the State University of Goiás, Ipameri Campus, located in the municipality of Ipameri, Goiás state (GO) at 17o43′ south latitude, 48o22′ west longitude and 800-m altitude
The following characteristics were evaluated at the first cut and 1st and 2nd regrowth: plant height, distance between the leaf apex and neck base, stem diameter, measured at the neck base, leaf number, fresh shoot matter, dry shoot matter collected and dried in a forced air oven at 65 °C until reaching a constant weight; all of the above in 10 plants in useful plot areas and productivity as quantity of leaves produced in the useful plot areas in t ha-1
Summary
Arugula has been gaining prominence in many salad preparations by imparting dark green colour and unrivalled flavor. Slow-release fertilizers present changes in the nitrogen compound structure or are coated with poorly permeable materials, yielding slower dissolution properties in the soil (Vitti & Reirinchs, 2007). In this way, these fertilizers reduce N loss, which often happens with the use of urea, causing a physical barrier that prevents the soluble forms from exposing the nutrient to the medium, avoiding losses (Civardi et al, 2011). This work evaluated the effect of nitrogen sources and doses on arugula culture, development and productivity
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