Manejo do nitrogênio no milho em sucessão a plantas de cobertura de solo, sob plantio direto
By C. Basso, C. A. Ceretta. 2000
62 citations recorded by the source corpus.
Based on the hypothesis that antecipating of nitrogen application can increase corn grain yield due to more N availability in the initial stages of development, field studies were conducted for three agricultural years (1996/97, 1997/98, and 1998/99) to evaluate different types of management of N application for corn cultivated after winter soil cover crops. This work was developed on a Hapludalf soil, at the experimental area of the Soil Science Departament at the Federal University of Santa Maria (RS, Brazil). A complete randomized block design with split-plots and three replications was used. In the main plots (25 x 5 m), three winter soil cover crops were tested: (a) black oats (Avena strigosa Schieb); (b) a mixture of oats + common vetch (Vicia sativa L.), and (c) oilseed radish (Raphanus sativus). In the sub plots (5 x 5 m), the amount of N (kg ha-1) was applied as broadcast before corn sowing, at corn sowing, and as side-dressing, respectively: (a) 00-00-00, (b) 00-30-90, (c) 30-30-60, (d) 60-30-30, and (d) 90-30-00. N application before corn sowing was done after the dessication of the cover crops, while as topdressing, N was applied when the corn plants presented 4 to 6 uncoiled leaves. Urea was used as a source of N. The results showed that the corn cultivated after oats + common vetch had better performance than when cultivated after black oats and oilseed radish. Nitrogen application before corn sowing is a risky practice, while N application at sowing and as topdressing is a safe recommendation.
Subfields: Agronomy and Crop Science, Soil Science
View Paper: https://www.semanticscholar.org/paper/fdb56eb216e43d15433c580a327005dd32342182
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Citations in the corpus
- Épocas e formas de aplicação de nitrogênio no milho sob plantio direto em solo de cerrado (2005, background): “…outras condições edafoclimáticas, pesquisas já registraram ganhos em produtividade com a antecipação do N à semeadura do milho (Sá, 1996), bem como já demonstraram, como neste estudo, que a aplicação antecipada do N é arriscada e tem acarretado menor produtividade de milho (Basso & Ceretta, 2000).”
- Maize response to nitrogen fertilization timing in two tillage systems in a soil with high organic matter content (2007, background): “Reductions in maize grain yield caused by the anticipation of N fertilization in wet spring conditions were reported by Bortolini et al. (2000, 2001), Scherer (2001), Basso & Ceretta (2000) Ceretta et al. (2002a,b), Mai et al. (2003) and Wolschick et al. (2003).”