Effect of soil interacting herbicides on soybean nodulation in Balcarce, Argentina
Two trials were performed in Balcarce, Argentina (37° 45' LS; 58° 18' LW) during 1993-94, to assess the effect of eight herbicides applied individually or in tank mixtures, on nodule number, nodule dry weight, seed yield and N percent in seed in soybean Asgrow 3205, inoculated with Bradyrh...
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| Format: | Article |
| Language: | English |
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Embrapa Informação Tecnológica
1999-07-01
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| Series: | Pesquisa Agropecuária Brasileira |
| Subjects: | |
| Online Access: | http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-204X1999000700008&lng=en&tlng=en |
| _version_ | 1798046276773740544 |
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| author | Norma Gonzalez Juan Jose Eyherabide Maria Ignacia Barcelonna Alfredo Gaspari Silvina Sanmartino |
| author_facet | Norma Gonzalez Juan Jose Eyherabide Maria Ignacia Barcelonna Alfredo Gaspari Silvina Sanmartino |
| author_sort | Norma Gonzalez |
| collection | DOAJ |
| description | Two trials were performed in Balcarce, Argentina (37° 45' LS; 58° 18' LW) during 1993-94, to assess the effect of eight herbicides applied individually or in tank mixtures, on nodule number, nodule dry weight, seed yield and N percent in seed in soybean Asgrow 3205, inoculated with Bradyrhizobium japonicum CB 1809. Individual herbicides and doses in kg ha-1 of a.i. were metribuzin (0.48), acetochlor (0.90), metolachlor (1), flumioxazin (0.075), trifluralin (0.96), imazaquin (0.20), imazethapyr (0.10) and chlorimuron ethyl (0.0125). The mixtures were metribuzin+acetochlor (0.48+0.9), flumioxazin+acetochlor (0.075+0.9), imazaquin+acetochlor (0.2+0.9), metribuzin+metolachlor (0.48+1.92), and flumioxazin+ metolachlor (0.075+1.92). A control treatment without herbicides was included. Both trials were laid out as randomized complete blocks with four replicates, on a loam illitic thermic petrocalcic Paleudoll, 5.7% organic matter (OM), 25% clay, 30.4 cmol kg-1 CEC. Nodules were sampled at V2 (second node), V6 (sixth node) and R5 (beginning seed) growth stages. Herbicides did not significantly affect the beginning of nodulation or nodule number and mass at R5, not either grain yield or N accumulation. This indicates lack of interference between soil interacting herbicides and N fixation in the high organic matter, loam soils of SE Buenos Aires province, even though a tendency in less number and dry weight of nodules was evident at the two latter growth stages. |
| first_indexed | 2024-04-11T23:35:03Z |
| format | Article |
| id | doaj.art-bfcdc025f0094cda8b3335d9e802f6bb |
| institution | Directory Open Access Journal |
| issn | 1678-3921 |
| language | English |
| last_indexed | 2024-04-11T23:35:03Z |
| publishDate | 1999-07-01 |
| publisher | Embrapa Informação Tecnológica |
| record_format | Article |
| series | Pesquisa Agropecuária Brasileira |
| spelling | doaj.art-bfcdc025f0094cda8b3335d9e802f6bb2022-12-22T03:56:59ZengEmbrapa Informação TecnológicaPesquisa Agropecuária Brasileira1678-39211999-07-0134711671173S0100-204X1999000700008Effect of soil interacting herbicides on soybean nodulation in Balcarce, ArgentinaNorma Gonzalez0Juan Jose Eyherabide1Maria Ignacia Barcelonna2Alfredo Gaspari3Silvina Sanmartino4Instituto Nacional de Tecnología AgropecuariaInstituto Nacional de Tecnología AgropecuariaInstituto Nacional de Tecnología AgropecuariaInstituto Nacional de Tecnología AgropecuariaInstituto Nacional de Tecnología AgropecuariaTwo trials were performed in Balcarce, Argentina (37° 45' LS; 58° 18' LW) during 1993-94, to assess the effect of eight herbicides applied individually or in tank mixtures, on nodule number, nodule dry weight, seed yield and N percent in seed in soybean Asgrow 3205, inoculated with Bradyrhizobium japonicum CB 1809. Individual herbicides and doses in kg ha-1 of a.i. were metribuzin (0.48), acetochlor (0.90), metolachlor (1), flumioxazin (0.075), trifluralin (0.96), imazaquin (0.20), imazethapyr (0.10) and chlorimuron ethyl (0.0125). The mixtures were metribuzin+acetochlor (0.48+0.9), flumioxazin+acetochlor (0.075+0.9), imazaquin+acetochlor (0.2+0.9), metribuzin+metolachlor (0.48+1.92), and flumioxazin+ metolachlor (0.075+1.92). A control treatment without herbicides was included. Both trials were laid out as randomized complete blocks with four replicates, on a loam illitic thermic petrocalcic Paleudoll, 5.7% organic matter (OM), 25% clay, 30.4 cmol kg-1 CEC. Nodules were sampled at V2 (second node), V6 (sixth node) and R5 (beginning seed) growth stages. Herbicides did not significantly affect the beginning of nodulation or nodule number and mass at R5, not either grain yield or N accumulation. This indicates lack of interference between soil interacting herbicides and N fixation in the high organic matter, loam soils of SE Buenos Aires province, even though a tendency in less number and dry weight of nodules was evident at the two latter growth stages.http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-204X1999000700008&lng=en&tlng=enBradyrhizobium japonicumlesões por herbicidasfixação de Nrendimento |
| spellingShingle | Norma Gonzalez Juan Jose Eyherabide Maria Ignacia Barcelonna Alfredo Gaspari Silvina Sanmartino Effect of soil interacting herbicides on soybean nodulation in Balcarce, Argentina Pesquisa Agropecuária Brasileira Bradyrhizobium japonicum lesões por herbicidas fixação de N rendimento |
| title | Effect of soil interacting herbicides on soybean nodulation in Balcarce, Argentina |
| title_full | Effect of soil interacting herbicides on soybean nodulation in Balcarce, Argentina |
| title_fullStr | Effect of soil interacting herbicides on soybean nodulation in Balcarce, Argentina |
| title_full_unstemmed | Effect of soil interacting herbicides on soybean nodulation in Balcarce, Argentina |
| title_short | Effect of soil interacting herbicides on soybean nodulation in Balcarce, Argentina |
| title_sort | effect of soil interacting herbicides on soybean nodulation in balcarce argentina |
| topic | Bradyrhizobium japonicum lesões por herbicidas fixação de N rendimento |
| url | http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-204X1999000700008&lng=en&tlng=en |
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