WATERMELON YIELD AND EFFICIENCY OF USE OF WATER AND NITROGEN

• Autor: LAÉRCIO DA SILVA PEREIRA ; EVERALDO MOREIRA DA SILVA ; JOSÉ ORLANDO PIAUILINO FERREIRA ; VINÍCIUS LEMOS GUERRA SANTOS ; CARLOS JOSÉ GONÇALVES DE SOUZA LIMA ; GABRIEL BARBOSA DA SILVA JÚNIOR
• Materias: Agricultural Biotechnology not elsewhere classified ; Agricultural Economics ; Animal Physiology - Systems ; Food Sciences not elsewhere classified ; FOS: Agricultural biotechnology ; FOS: Biological sciences ; FOS: Earth and related environmental sciences ; FOS: Economics and business ; FOS: Other engineering and technologies ; Wildlife and Habitat Management
• Notas: RelationTypeNote: IsSupplementTo -- 10.1590/1983-21252019v32n321rc
  10.1590/1983-21252019v32n321rc
  
• Descripción: ABSTRACT The evaluation of the yield of crops and their efficiency of use of water and nitrogen is essential to optimize the management of production factors. The objective of this study is to evaluate the effect of irrigation regimes and nitrogen doses in fertigation on fruit yield and efficiency of use of water and nitrogen by the Top Gun watermelon hybrid. The study was conducted in Bom Jesus, Piauí, Brazil, from August 4 to October 15, 2015. The study used a completed randomized block design with four repetitions, five irrigation depths (110.17, 156.86, 221.16, 268.87, and 317.09 mm), and five doses of nitrogen in fertigation (0, 50, 100, 150, and 200 kg ha-1 applied as urea). Fruit yield and water use efficiency were not affected by nitrogen doses; however, there was a significant interaction of the factors for the efficiency of nitrogen use. The highest yield (39,549.45 kg ha-1) was obtained using 233.48 mm of water during the growth cycle. The water depth that promoted the maximum efficiency of water use was 110.42 mm, and nitrogen use was most efficient using 232.21 mm of water and 50 kg ha-1 of nitrogen.
  
• Editor: SciELO journals
  
• Fecha de creación: 2021
  
• Idioma: Inglés