Growth and nodulation in soybean cultivated on two substrata and treated with five rates of metolachlor Crescimento e nodulação de soja cultivada em dois substratos e submetida a cinco doses de metolachlor
The effect of metolachlior [2-chloro-N-(2-ethyl-6-methylphenyl)-N-(2-methoxy-l-methylethyl) acetamide] at rates of 0.0, 1.5, 3.0, 4.5, and 6.0kg a.i./ha on the growth and nodulation of soybean cv. BR-4 cultivated on two substrata (soil and soil + sand) and inoculated with Bradyrhizobium japonicum (K...
| Main Authors: | , |
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| Format: | Article |
| Language: | English |
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Universidade Federal de Santa Maria
1995-01-01
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| Series: | Ciência Rural |
| Subjects: | |
| Online Access: | http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0103-84781995000300001 |
| _version_ | 1819178487015014400 |
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| author | Cassandro Vidal Talamini do Amarante Paulo Cesar Canci |
| author_facet | Cassandro Vidal Talamini do Amarante Paulo Cesar Canci |
| author_sort | Cassandro Vidal Talamini do Amarante |
| collection | DOAJ |
| description | The effect of metolachlior [2-chloro-N-(2-ethyl-6-methylphenyl)-N-(2-methoxy-l-methylethyl) acetamide] at rates of 0.0, 1.5, 3.0, 4.5, and 6.0kg a.i./ha on the growth and nodulation of soybean cv. BR-4 cultivated on two substrata (soil and soil + sand) and inoculated with Bradyrhizobium japonicum (Kirchnea-1896) Jordan 1982, 137 (Denotes that this name has been validly published in the oficial publicadon, Intemational Joumal of Systematic Bacteriology), was studied under greenhouse conditions at Lages, SC, Brazil, in 1992-93. The experimental design was completely randomized with four replicates. The experimental unit was a container with two plants. Fifty-two days after the emergence (at R1 stage - beginning of flowering) the plants were harvested and evaluated for shoot, root, leaf and nodule dry matter, nodule number, and leaf area. The data were submitted to variance analysis and multiple polynomial regression. Increasing rates of metolachlor significantly reduced shoot, leaf and nodule dry matter and leaf area, the data following a linear polynomial regression, while root dry matter and nodule number were not affected. The interaction "rate x substratum" was not significant for all parameters studied. Except for root dry matter and nodule number, soybean growth was significantly reduced more on soil + sand than on soil, probably as a result of a nutritional effect. Visual phytotoxicity was not observed for all treatments.<br>Este trabalho foi conduzido com o objetivo de estudar o efeito de cinco doses do herbicida metolachlor (0,0, 1,5, 3,0, 4,5 e 6,0 kg i.a./ha) sobre o crescimento e nodulação de soja cv. BR-4, inoculada com Bradyrhizobium japonicum (Kirchner 1896) Jordan 1982, 137 (nomenclatura válida conforme publicação oficial do Intemational Joumal of Systematic Bacteriology) e cultivada em dois substratos (solo e solo + areia) em condições de casa de vegetação, em Lages, SC, Brasil, no ciclo 1992/93. O delineamento experimental utilizado foi o inteiramente casualizado com quatro repetições, sendo a unidade experimental o vaso com duas plantas. Cinqüenta e dois dias após a emergência (no estágio R1 - início do florescimento) as plantas foram colhidas, procedendo-se a determinação de matéria seca de caule, raiz, folhas e nódulos, número de nódulos e area foliar. Os dados foram submetidos à análise de variância e regressão polinomial múltipla. Doses crescentes de metolachlior significativamente reduziram a matéria seca de caule, folha e nódulos e area foliar, segundo uma regressão polinomial linear, o mesmo não ocorrendo com a matéria seca de raiz e o número de nódulos. A interação "dose x substrato" não foi significativa para todos os parâmetros avaliados. À exceção da matéria seca de raiz e do número de nódulos, o crescimento foi significativamente menor no substrato solo + areia do que no substrato solo, devido, provavelmente, a efeitos nutricionais. Nenhum tratamento casou efeito fitotóxico visual às plantas de soja. |
| first_indexed | 2024-12-22T21:43:20Z |
| format | Article |
| id | doaj.art-d9bd9461e8774a54b4e23127cf010522 |
| institution | Directory Open Access Journal |
| issn | 0103-8478 1678-4596 |
| language | English |
| last_indexed | 2024-12-22T21:43:20Z |
| publishDate | 1995-01-01 |
| publisher | Universidade Federal de Santa Maria |
| record_format | Article |
| series | Ciência Rural |
| spelling | doaj.art-d9bd9461e8774a54b4e23127cf0105222022-12-21T18:11:33ZengUniversidade Federal de Santa MariaCiência Rural0103-84781678-45961995-01-0125334735110.1590/S0103-84781995000300001Growth and nodulation in soybean cultivated on two substrata and treated with five rates of metolachlor Crescimento e nodulação de soja cultivada em dois substratos e submetida a cinco doses de metolachlorCassandro Vidal Talamini do AmarantePaulo Cesar CanciThe effect of metolachlior [2-chloro-N-(2-ethyl-6-methylphenyl)-N-(2-methoxy-l-methylethyl) acetamide] at rates of 0.0, 1.5, 3.0, 4.5, and 6.0kg a.i./ha on the growth and nodulation of soybean cv. BR-4 cultivated on two substrata (soil and soil + sand) and inoculated with Bradyrhizobium japonicum (Kirchnea-1896) Jordan 1982, 137 (Denotes that this name has been validly published in the oficial publicadon, Intemational Joumal of Systematic Bacteriology), was studied under greenhouse conditions at Lages, SC, Brazil, in 1992-93. The experimental design was completely randomized with four replicates. The experimental unit was a container with two plants. Fifty-two days after the emergence (at R1 stage - beginning of flowering) the plants were harvested and evaluated for shoot, root, leaf and nodule dry matter, nodule number, and leaf area. The data were submitted to variance analysis and multiple polynomial regression. Increasing rates of metolachlor significantly reduced shoot, leaf and nodule dry matter and leaf area, the data following a linear polynomial regression, while root dry matter and nodule number were not affected. The interaction "rate x substratum" was not significant for all parameters studied. Except for root dry matter and nodule number, soybean growth was significantly reduced more on soil + sand than on soil, probably as a result of a nutritional effect. Visual phytotoxicity was not observed for all treatments.<br>Este trabalho foi conduzido com o objetivo de estudar o efeito de cinco doses do herbicida metolachlor (0,0, 1,5, 3,0, 4,5 e 6,0 kg i.a./ha) sobre o crescimento e nodulação de soja cv. BR-4, inoculada com Bradyrhizobium japonicum (Kirchner 1896) Jordan 1982, 137 (nomenclatura válida conforme publicação oficial do Intemational Joumal of Systematic Bacteriology) e cultivada em dois substratos (solo e solo + areia) em condições de casa de vegetação, em Lages, SC, Brasil, no ciclo 1992/93. O delineamento experimental utilizado foi o inteiramente casualizado com quatro repetições, sendo a unidade experimental o vaso com duas plantas. Cinqüenta e dois dias após a emergência (no estágio R1 - início do florescimento) as plantas foram colhidas, procedendo-se a determinação de matéria seca de caule, raiz, folhas e nódulos, número de nódulos e area foliar. Os dados foram submetidos à análise de variância e regressão polinomial múltipla. Doses crescentes de metolachlior significativamente reduziram a matéria seca de caule, folha e nódulos e area foliar, segundo uma regressão polinomial linear, o mesmo não ocorrendo com a matéria seca de raiz e o número de nódulos. A interação "dose x substrato" não foi significativa para todos os parâmetros avaliados. À exceção da matéria seca de raiz e do número de nódulos, o crescimento foi significativamente menor no substrato solo + areia do que no substrato solo, devido, provavelmente, a efeitos nutricionais. Nenhum tratamento casou efeito fitotóxico visual às plantas de soja.http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0103-84781995000300001metolachlorGlycine max (L.) MerrillcrescimentonodulaçãometolachlorGlycine max (L.) Merrilgrowthnodulation |
| spellingShingle | Cassandro Vidal Talamini do Amarante Paulo Cesar Canci Growth and nodulation in soybean cultivated on two substrata and treated with five rates of metolachlor Crescimento e nodulação de soja cultivada em dois substratos e submetida a cinco doses de metolachlor Ciência Rural metolachlor Glycine max (L.) Merrill crescimento nodulação metolachlor Glycine max (L.) Merril growth nodulation |
| title | Growth and nodulation in soybean cultivated on two substrata and treated with five rates of metolachlor Crescimento e nodulação de soja cultivada em dois substratos e submetida a cinco doses de metolachlor |
| title_full | Growth and nodulation in soybean cultivated on two substrata and treated with five rates of metolachlor Crescimento e nodulação de soja cultivada em dois substratos e submetida a cinco doses de metolachlor |
| title_fullStr | Growth and nodulation in soybean cultivated on two substrata and treated with five rates of metolachlor Crescimento e nodulação de soja cultivada em dois substratos e submetida a cinco doses de metolachlor |
| title_full_unstemmed | Growth and nodulation in soybean cultivated on two substrata and treated with five rates of metolachlor Crescimento e nodulação de soja cultivada em dois substratos e submetida a cinco doses de metolachlor |
| title_short | Growth and nodulation in soybean cultivated on two substrata and treated with five rates of metolachlor Crescimento e nodulação de soja cultivada em dois substratos e submetida a cinco doses de metolachlor |
| title_sort | growth and nodulation in soybean cultivated on two substrata and treated with five rates of metolachlor crescimento e nodulacao de soja cultivada em dois substratos e submetida a cinco doses de metolachlor |
| topic | metolachlor Glycine max (L.) Merrill crescimento nodulação metolachlor Glycine max (L.) Merril growth nodulation |
| url | http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0103-84781995000300001 |
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