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- Title
ADUBAÇÃO NITROGENADA POR DIFERENTES MÉTODOS NO CULTIVO DA ABOBRINHA IRRIGADA.
- Authors
Vieira Fernandes, Carlos Newdmar; Moreira de Azevedo, Benito; Vieira Vasconcelos, Denise; Dias Fernandes, Chrislene Nojosa; Vieira Fernandes, José Normand; de Araújo Viana, Thales Vinícius
- Abstract
The zucchini, cucurbit appreciated the taste and light texture, has the nutritional management as a relevant factor for the establishment and production increase. To evaluate the effect of nitrogen applied conventionally and fertigation in squash (Cucurbita pepo L.), there was an experiment in Fortaleza, Ceará. The design was a randomized complete block design with four replications in factorial (2 x 4) and two fertilization ways (conventional and fertigation) and four nitrogen rates (0, 70, 140 and 280 kg ha-1). Fruit mass, number of fruits, fruit length, fruit diameter, pulp thickness, soluble solids and productivity were evaluated. The efficiency of the use of water (USA) and nitrogen (EUN) was also evaluated, in addition to the economic analysis by means of NPV, IRR and "payback". The doses of N influenced the fruit mass, fruit diameter and productivity. The yield showed increasing linear fit, the largest estimated 27,302 kg ha-1, it's the highest dose (280 kg ha-1 N), dose also responsible for the largest US 68 kg ha-1 mm-1. NUE presented quadratic behavior with a dose of 160 kg ha-1 N providing a maximum of (55 kg ha-1(kg ha-1)-1). All treatments were economically viable, and the months of May, April, December and November the most promising.
- Subjects
FORTALEZA (Brazil); CUCURBITA pepo; WATER efficiency; FACTORS of production; FERTIGATION; BLOCK designs
- Publication
Revista Brasileira de Agricultura Irrigada - RBAI, 2020, Vol 14, Issue 4, p4118
- ISSN
1982-7679
- Publication type
Article
- DOI
10.7127/rbai.v14n401173