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Details for article 3 of 15 found articles
| Title: |
CUSTOS E RENTABILIDADE DO MILHO EM FUNÇÃO DO MANEJO DO SOLO E DA ADUBAÇÃO NITROGENADA MAIZE COSTS AND PROFITABILITY ACCORDING TO SOIL MANAGEMENT AND NITROGEN FERTILIZATION |
| Author: |
Flávio Hiroshi Kaneko Orivaldo Arf Douglas de Castilho Gitti Maria Aparecida Anselmo Tarsitano Rosalina Maria Alves Rapassi Rafael Gonçalves Vilela |
| Appeared in: |
Pesquisa agropecuária tropical |
| Paging: | Volume 40 (2009) nr. 1 pages xx |
| Year: |
2009 |
| Contents: |
<p class="MsoNormal" style="margin-bottom: .0001pt; text-align: justify; line-height: 200%;"><!-- @page { margin: 2cm } P { margin-bottom: 0.21cm } --></p><p style="margin-bottom: 0cm; font-style: normal; font-weight: normal; line-height: 120%; text-decoration: none;" lang="pt-BR" align="JUSTIFY"><span style="color: #000000;"><span style="font-family: Times New Roman,serif;"><span style="font-size: small;">Práticas agronômicas que ajudem o agricultor a elevar a produtividade e diminuir os custos de produção devem ser estudadas para garantir a sustentabilidade agrícola. Assim, o objetivo deste trabalho foi analisar, economicamente, o efeito do manejo do solo e do nitrogênio, na cultura do milho. Os tratamentos foram constituídos pela combinação de 3 manejos do solo (grade pesada + grade niveladora, escarificador + grade niveladora e plantio direto) e 5 épocas de aplicação de nitrogênio (testemunha sem N; 120 kg ha<sup>-1 logo após a semeadura (S); 120 kg ha<sup>-1 no estádio V6; 30 kg ha<sup>-1 (S) + 90 kg ha<sup>-1 em V6; 30 kg ha<sup>-1 (S) + 45 kg ha<sup>-1 em V4 + 45 kg ha<sup>-1 em V8). Foram estimados o custo operacional total (COT), receita bruta (RB), lucro operacional (LO), índice de lucratividade (IL), produtividade de equilíbrio e preço de equilíbrio. Conclui-se que o sistema de plantio direto, após 11 anos de manejo, associado à adubação nitrogenada, promoveu LO e IL positivos, sendo favorável o uso destas práticas, pelos agricultores.</span></span></span></p> <p style="margin-bottom: 0cm; font-style: normal; font-weight: normal; line-height: 120%; text-decoration: none;" lang="pt-BR" align="JUSTIFY"><span style="color: #000000;"><span style="font-family: Times New Roman,serif;"><span style="font-size: small;"><span style="color: #000000;"><span style="text-decoration: none;"><span style="font-family: Times New Roman,serif;"><span lang="pt-BR"><span style="font-style: normal;"><span style="font-weight: normal;">PALAVRAS-CHAVE: </span></span></span></span></span></span><span style="color: #000000;"><span style="text-decoration: none;"><span style="font-family: Times New Roman,serif;"><span lang="pt-BR"><em><span style="font-weight: normal;">Zea mays</span></em></span></span></span></span><span style="color: #000000;"><span style="text-decoration: none;"><span style="font-family: Times New Roman,serif;"><span lang="pt-BR"><span style="font-style: normal;"><span style="font-weight: normal;">; custo de produção; plantio direto; plantio convencional.</span></span></span></span></span></span></span></span></span></p><p> </p> <!-- @page { margin: 2cm } P { margin-bottom: 0.21cm } --> <p style="margin-bottom: 0cm; font-style: normal; font-weight: normal; line-height: 120%; text-decoration: none;" lang="pt-BR" align="JUSTIFY"><span style="color: #000000;"><span style="font-family: Times New Roman,serif;"><span style="font-size: x-small;"><span style="font-size: small;">Agronomic practices that help farmers to raise yield and</span><span style="font-size: small;"> </span><span style="font-size: small;">reduce costs must be studied to ensure agricultural sustainability. Thus, the objective of this study was to analyze economically the effect of soil management and nitrogen fertilization in maize crops. Treatments consisted of a combination of 3 soil management techniques (plow harrows + floating harrows, chisel + floating harrows, and no-tillage), 5 periods of</span><span style="font-size: small;"> nitrogen fertilization (</span><span style="font-size: small;">control - 0 kg ha</span><sup><span style="font-size: small;">-1 </span><span style="font-size: small;"> N; 120 kg ha</span><sup><span style="font-size: small;">-1</span><span style="font-size: small;"> after sowing (S); 120 kg ha</span><sup><span style="font-size: small;">-1</span><span style="font-size: small;"> in the V</span><span style="font-size: small;">6</span><span style="font-size: small;"> stage; 30 kg ha</span><sup><span style="font-size: small;">-1</span><span style="font-size: small;"> (S) + 90 kg</span><span style="font-size: small;"> </span><span style="font-size: small;">ha</span><sup><span style="font-size: small;">-1</span><span style="font-size: small;"> in V</span><span style="font-size: small;">6</span><span style="font-size: small;">; 30 kg ha</span><sup><span style="font-size: small;">-1</span><span style="font-size: small;"> (S) + 45 kg ha</span><sup><span style="font-size: small;">-1</span><span style="font-size: small;"> in V</span><span style="font-size: small;">4</span><span style="font-size: small;"> + 45 kg ha</span><sup><span style="font-size: small;">-1</span><span style="font-size: small;"> in V</span><span style="font-size: small;">8. </span><span style="font-size: small;">The total operating cost (TOC), gross revenue (GR), operating profit (OP), profitability index (PI), break-even yield, and break-even price were estimated. It was concluded that the no-tillage system, after 11 years of management, associated with nitrogen fertilization promotes positive PI and OP, being useful to farmers. </span></span></span></span></p> <p style="margin-bottom: 0cm; font-style: normal; font-weight: normal; line-height: 120%; text-decoration: none;" lang="pt-BR" align="JUSTIFY"><span style="color: #000000;"><span style="font-family: Times New Roman,serif;"><span style="font-size: x-small;"><span style="font-size: small;"><span lang="en-US">KEY-WORDS: </span></span><span style="font-size: small;"><span lang="en-US"><em>Zea mays</em></span></span><span style="font-size: small;"><span lang="en-US">; production cost; no-tillage; conventional tillage.</span></span></span></span></span></p> |
| Publisher: |
Escola de Agronomia e Engenharia de Alimentos - UFG (provided by DOAJ) |
| Source file: |
Elektronische Wetenschappelijke Tijdschriften |
Details for article 3 of 15 found articles
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