Levels of nitrogen and depths of irrigation on the production of green corn

• Autor(a) principal: Monteiro, Marco Almiro Resende
• Data de Publicação: 2014
• Outros Autores: Costa, Ênio Fernandes da, Gheiy, Hans Rai, Pinto, José Maria
• Tipo de documento: Artigo
• Idioma: por
• Título da fonte: Pesquisa Agropecuária Brasileira (Online)
• Texto Completo: https://seer.sct.embrapa.br/index.php/pab/article/view/15914
• topic: Zea mays; closed furrow; nitrogeneous fertilization; Zea mays; sulcos fechados; adubação nitrogenada

To study the effects of different levels of nitrogen and depths of irrigation on the production of green corn (Zea mays L.) cultivar BR-126, a field experiment was conducted at the Centro National de Pesquisa de Milho e Sorgo (CNPMS) of (EMBRAPA) at Sete Lagoas, MG, Brazil. The study consisted of four irrigation treatments (depths equivalents to 25%, 50%, 75% and 100% of real evapotranspiration) and six nitrogen subtreatments (0, 40, 80, 120, 160 and 200 kg/ha). A split plot randomized block design with four replications was adopted for the experiment. The nitrogen was applied in the form of urea, 1/3 at the time of sowing and the rest 49 days after sowing. The irrigation system utilized was the closed furrow procedure. Weight and number of commercial cobs/ha were the parameter studied. Considering the effects of different depths of irrigation and levels of nitrogen, on the production of green corn, an application of 120kg N/ha and a depth of irrigation equivalent to 50% of real evapotranspiration may be recommended under similar conditions, although the economic aspects involved need to be analized.