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      Desempenho de cultivares e híbridos de milheto em solo submetido a compactação Translated title: Performance of cultivars and hybrids of millet in a soil submitted to compaction

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          Abstract

          Objetivou-se, neste trabalho, avaliar o crescimento aéreo e radicular de cultivares e híbridos de milheto em solo submetido a quatro níveis de compactação do solo. Foram utilizados sete híbridos de milheto - Pennisetum glaucum L. (40425, 40853, 41312, 51499, 60018, 60019 e ADR7010) e as variedades ADR300 e ADR500; aos 30 dias após o plantio determinaram-se as massas da matéria seca da parte aérea e das raízes, a densidade do comprimento radicular e o diâmetro médio radicular. Na densidade de 1,74 Mg m-3 as cultivares e híbridos de milheto apresentaram uma redução elevada da massa verde da parte aérea, massa seca da parte aérea, altura de plantas e área foliar. Os híbridos 40853 e 60019 apresentaram comportamento inferior aos demais híbridos e cultivares na produção de matéria verde e seca da parte aérea e altura de plantas na densidade de 1,65 Mg m-3. As cultivares ADR500 e ADR300 e os híbridos 40425 e 51499 se destacaram na produção de massa verde e seca e altura de plantas na densidade de 1,65 kg m-3. A maior densidade de comprimento radicular média entre as cultivares de milheto foi verificada na densidade do solo de 1,46 Mg m-3. A cultura do milheto demonstrou potencial como planta descompactadora do solo.

          Translated abstract

          The objective of this study was to evaluate the root and aerial growth of cultivars and hybrids of pearl millet in soil under four levels of soil compaction. Seven hybrids of pearl millet - Pennisetum glaucum L. (40425, 40853, 41312, 51499, 60018, 60019 and ADR7010) and ADR300 and ADR500 varieties were used. At 30 days after planting, the dry mass of shoots and roots, root length density and root mean diameter was determined. In the density of 1.74 Mg m-3 varieties and hybrids of pearl millet showed a high reduction of green matter, dry mass of shoots, plant height and leaf area. Hybrids 40853 and 60019 produced less than other hybrids and cultivars in the production of green and dry matter of shoots and plant height in the density of 1.65 Mg m-3. The ADR500 and ADR300 varieties and hybrids 40425 and 51499 excelled in the production of green and dry mass and plant height in the density of 1.65 kg m-3. The highest mean root length density among the cultivars of millet was found at a density of 1.46 Mg m-3. The millet crop showed potential for descompaction of soil.

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          Manual e métodos de análise de solo

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            Manual de método de análise de solo

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              Manual de Métodos de Análises de Solo

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                Author and article information

                Journal
                rbeaa
                Revista Brasileira de Engenharia Agrícola e Ambiental
                Rev. bras. eng. agríc. ambient.
                Departamento de Engenharia Agrícola - UFCG (Campina Grande, PB, Brazil )
                1415-4366
                1807-1929
                November 2013
                : 17
                : 11
                : 1188-1194
                Affiliations
                [01] Rio Verde GO orgnameColégio Estadual Olynto Pereira de Castro chrisbiologia@ 123456yahoo.com.br
                [02] Iporá GO orgnameInstituto Federal Goiano relassis@ 123456bol.com.br
                [03] Rio Verde GO orgnameUniRV simon@ 123456unirv.edu.br
                [04] São Mateus ES orgnameUFES fabiopires@ 123456ceunes.ufes.br
                [05] orgnameUniversidade de Rio Verde
                [06] Rio Verde GO orgnameIndústria e Comércio de Fertilizantes Rifertil Ltda cabralagrorv@ 123456hotmail.com
                Article
                S1415-43662013001100009 S1415-4366(13)01701100009
                10.1590/S1415-43662013001100009
                ec767f1c-c48a-447d-b1a7-913629e8bdc5

                This work is licensed under a Creative Commons Attribution 4.0 International License.

                History
                : 02 August 2013
                : 31 October 2012
                Page count
                Figures: 0, Tables: 0, Equations: 0, References: 19, Pages: 7
                Product

                SciELO Brazil

                Categories
                Manejo de Solo, Água e Planta

                root system,cover plants,densidade do solo,sistema radicular,plantas de cobertura,soil density

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