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| Registros recuperados : 17.113 | |
| 9462. |  | SIMON, J.; COSTA, R. V. da; ALMEIDA, R. E. M. de; CAMPOS, L. J. M.; LAGO, B. C.; FERREIRA, L. L.; LOPES, E. R.; DINIZ FILHO, R. Época de plantio e cultivares de milho safrinha no Tocantins. Palmas: Embrapa Pesca e Aquicultura, 2016. 18 p. (Embrapa Pesca e Aquicultura. Boletim de pesquisa e desenvolvimento, 14).| Biblioteca(s): Embrapa Milho e Sorgo; Embrapa Pesca e Aquicultura. |
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| 9473. | | SANTOS, A. P. M. dos; SANTOS, E. M.; ARAUJO, G. G. L. de; OLIVEIRA, J. S. de; ZANINE, A. de M.; PINHO, R. M. A.; CRUZ, G. F. de L.; FERREIRA, D. de J.; PERAZZO, A. F.; PEREIRA, D. M.; SANTOS, F. N. de S. Effect of inoculation with preactivated Lactobacillus Buchneri and urea on fermentative profile, aerobic stability and nutritive value in corn silage. Agriculture, v. 10, n. 8, 2020.| Biblioteca(s): Embrapa Semiárido. |
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| 9477. | | DUARTE, A. P.; MARTINS, A. C. N.; BRUNINI, O.; CANTARELLA, H.; DEUBER, R.; PATERNIANI, M. E. A. G. Z.; TSUNECHIRO, A.; SAWAZAKI, E.; DENUCCI, S.; FANTIN, G. M.; RECO, P. C. Milho safrinha: tecnicas para o cultivo no Estado de Sao Paulo. Campinas: CATI, 2000. 16p. (Documento Tecnico, 113). Aildson Pereira Duarte (Coordenador).| Biblioteca(s): Embrapa Mandioca e Fruticultura; Embrapa Pantanal; Embrapa Solos. |
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| Registros recuperados : 17.113 | |
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Registro Completo
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Biblioteca(s): |
Embrapa Milho e Sorgo. |
|
Data corrente: |
12/02/1993 |
|
Data da última atualização: |
19/10/2023 |
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Autoria: |
MANTOVANI, E. C. |
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Afiliação: |
EVANDRO CHARTUNI MANTOVANI, CNPMS. |
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Título: |
A soil surface traffic - corn yield model for a soil under cerrado vegetation in Brazil with less than 10 years of cultivation. |
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Ano de publicação: |
1984 |
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Fonte/Imprenta: |
1984. |
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Páginas: |
148 p. |
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Idioma: |
Inglês |
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Notas: |
Tese (Doutorado) - Purdue University, West Lafayette. |
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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 |
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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. |
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Thesagro: |
Agricultura; Cerrado; Compactação do Solo; Grade de Disco; Irrigação; Manejo; Mecanização; Mecanização Agrícola; Milho; Plantio; Produção; Rendimento; Solo; Zea Mays. |
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Thesaurus NAL: |
agriculture; Brazil; Ferralsols; irrigation; mechanization; soil; soil compaction; soil types; yields. |
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Categoria do assunto: |
-- |
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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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Embrapa Milho e Sorgo (CNPMS) |
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