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Registro Completo |
Biblioteca(s): |
Embrapa Cerrados; Embrapa Milho e Sorgo. |
Data corrente: |
12/02/1993 |
Data da última atualização: |
19/10/2023 |
Autoria: |
MANTOVANI, E. C. |
Afiliação: |
EVANDRO CHARTUNI MANTOVANI, CNPMS. |
Título: |
A soil surface traffic - corn yield model for a soil under cerrado vegetation in Brazil with less than 10 years of cultivation. |
Ano de publicação: |
1984 |
Fonte/Imprenta: |
1984. |
Páginas: |
148 p. |
Idioma: |
Inglês |
Notas: |
Tese (Doutorado) - Purdue University, West Lafayette. |
Conteúdo: |
Due to the rapid expansion of the brazilian agriculture frontier and adoption of mechanization technology, the "Cerrados" area has begun to show some signs of mismanagement. One area of mismanagement is the mechanization process especially how it affects soil compaction. This study was conducted at the National Research Center for Corn and Sorghum EMBRAPA, Sete Lagoas, Minas Gerais, Brazil, 1983, with the objective to quantify the effect of surface traffic on corn yield in soil with less than 10 years of cultivation and also to model the effect of traffic on Dark Red Latosol soil. Five compaction levels (0, 1, 5, 10, 10 + subsoiler) and two irrigation levels in a split plot design were tested. The soil's critical moisture content range was 32-35% and was obtained by the Standard and 15-Blow Proctor. A Ford-6000 tractor carrying a disk harrow in an up position with 4900 kg weight was used as static force and its front and rear contact pressure was 0.70 and 0.78 kg/cm2. A soil characterization of the plots was performed before and after soil compaction at 0-7.5, 7.5-15, 15-22.5, 22.5-30, 30-37.5 and 37.5-45 cm depth and the parameters studied were: bulk density, particle density, pore size distribution, particle size distribution, agregate stability and soil strength. Also plant growth, soil moisture content, root weight and grain yield were evaluated under the tested compaction levels. A stepwise regression program was used and the best set of independent variable was found to establish a regression model. There was no significant difference among the ten compaction treatments for its effects on corn yield. MenosDue to the rapid expansion of the brazilian agriculture frontier and adoption of mechanization technology, the "Cerrados" area has begun to show some signs of mismanagement. One area of mismanagement is the mechanization process especially how it affects soil compaction. This study was conducted at the National Research Center for Corn and Sorghum EMBRAPA, Sete Lagoas, Minas Gerais, Brazil, 1983, with the objective to quantify the effect of surface traffic on corn yield in soil with less than 10 years of cultivation and also to model the effect of traffic on Dark Red Latosol soil. Five compaction levels (0, 1, 5, 10, 10 + subsoiler) and two irrigation levels in a split plot design were tested. The soil's critical moisture content range was 32-35% and was obtained by the Standard and 15-Blow Proctor. A Ford-6000 tractor carrying a disk harrow in an up position with 4900 kg weight was used as static force and its front and rear contact pressure was 0.70 and 0.78 kg/cm2. A soil characterization of the plots was performed before and after soil compaction at 0-7.5, 7.5-15, 15-22.5, 22.5-30, 30-37.5 and 37.5-45 cm depth and the parameters studied were: bulk density, particle density, pore size distribution, particle size distribution, agregate stability and soil strength. Also plant growth, soil moisture content, root weight and grain yield were evaluated under the tested compaction levels. A stepwise regression program was used and the best set of independent variable was found t... Mostrar Tudo |
Palavras-Chave: |
2406; Brasil; CNPMS; Compactacao; Compactation; Cultivation; Dark red latosol; Dark-red latosol; Disc harrow; Latossolo vermelho-escuro; Maize; Management; Minas Gerais; Production data; Savanna; Sete Lagoas; Yield; Zea mayz. |
Thesagro: |
Agricultura; Cerrado; Compactação do Solo; Grade de Disco; Irrigação; Manejo; Mecanização; Mecanização Agrícola; Milho; Plantio; Produção; Rendimento; Solo; Zea Mays. |
Thesaurus Nal: |
agriculture; Brazil; Ferralsols; irrigation; mechanization; soil; soil compaction; soil types; yields. |
Categoria do assunto: |
-- |
URL: |
https://ainfo.cnptia.embrapa.br/digital/bitstream/item/90296/1/T-Evandro-Mantovani.pdf
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Marc: |
LEADER 03192nam a2200625 a 4500 001 1474165 005 2023-10-19 008 1984 bl uuuu m 00u1 u #d 100 1 $aMANTOVANI, E. C. 245 $aA soil surface traffic - corn yield model for a soil under cerrado vegetation in Brazil with less than 10 years of cultivation. 260 $a1984.$c1984 300 $a148 p. 500 $aTese (Doutorado) - Purdue University, West Lafayette. 520 $aDue to the rapid expansion of the brazilian agriculture frontier and adoption of mechanization technology, the "Cerrados" area has begun to show some signs of mismanagement. One area of mismanagement is the mechanization process especially how it affects soil compaction. This study was conducted at the National Research Center for Corn and Sorghum EMBRAPA, Sete Lagoas, Minas Gerais, Brazil, 1983, with the objective to quantify the effect of surface traffic on corn yield in soil with less than 10 years of cultivation and also to model the effect of traffic on Dark Red Latosol soil. Five compaction levels (0, 1, 5, 10, 10 + subsoiler) and two irrigation levels in a split plot design were tested. The soil's critical moisture content range was 32-35% and was obtained by the Standard and 15-Blow Proctor. A Ford-6000 tractor carrying a disk harrow in an up position with 4900 kg weight was used as static force and its front and rear contact pressure was 0.70 and 0.78 kg/cm2. A soil characterization of the plots was performed before and after soil compaction at 0-7.5, 7.5-15, 15-22.5, 22.5-30, 30-37.5 and 37.5-45 cm depth and the parameters studied were: bulk density, particle density, pore size distribution, particle size distribution, agregate stability and soil strength. Also plant growth, soil moisture content, root weight and grain yield were evaluated under the tested compaction levels. A stepwise regression program was used and the best set of independent variable was found to establish a regression model. There was no significant difference among the ten compaction treatments for its effects on corn yield. 650 $aagriculture 650 $aBrazil 650 $aFerralsols 650 $airrigation 650 $amechanization 650 $asoil 650 $asoil compaction 650 $asoil types 650 $ayields 650 $aAgricultura 650 $aCerrado 650 $aCompactação do Solo 650 $aGrade de Disco 650 $aIrrigação 650 $aManejo 650 $aMecanização 650 $aMecanização Agrícola 650 $aMilho 650 $aPlantio 650 $aProdução 650 $aRendimento 650 $aSolo 650 $aZea Mays 653 $a2406 653 $aBrasil 653 $aCNPMS 653 $aCompactacao 653 $aCompactation 653 $aCultivation 653 $aDark red latosol 653 $aDark-red latosol 653 $aDisc harrow 653 $aLatossolo vermelho-escuro 653 $aMaize 653 $aManagement 653 $aMinas Gerais 653 $aProduction data 653 $aSavanna 653 $aSete Lagoas 653 $aYield 653 $aZea mayz
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Registro original: |
Embrapa Milho e Sorgo (CNPMS) |
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Registros recuperados : 241 | |
50. | | MANTOVANI, E. C.; MAY, A. Mecanização. In: PEREIRA FILHO, I. A.; RODRIGUES, J. A. S. (Ed.). Sorgo: o produtor pergunta, a Embrapa responde. Brasília, DF: Embrapa, 2015. cap. 3, p. 41-50. (Coleção 500 perguntas, 500 respostas).Tipo: Capítulo em Livro Técnico-Científico |
Biblioteca(s): Embrapa Milho e Sorgo. |
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53. | | PERUMPRAL, J. V.; MANTOVANI, E. C. Aplicações do cone penetrômetro. In: PUIGNAU, J. P.; DENARDIN, J. E.; KOCHHANN, R. A.; MOTTER, D. R.; WALL, P. C. Metodologias para investigacion en manejo de suelos. Montevideo: IICA, 1994. p. 51-55. (IICA/PROCISUR-Dialogo, 39).Tipo: Capítulo em Livro Técnico-Científico |
Biblioteca(s): Embrapa Milho e Sorgo. |
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55. | | MANTOVANI, E. C.; PIMENTEL, M. A. G. Colheita. In: GALVÃO, J. C. C.; BORÉM, A.; PIMENTEL, M. A. (Ed.). Milho: do plantio à colheita. Viçosa, MG: UFV, 2015. cap. 14, p. 323-351.Tipo: Capítulo em Livro Técnico-Científico |
Biblioteca(s): Embrapa Milho e Sorgo. |
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Registros recuperados : 241 | |
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