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Master's Dissertation
DOI
https://doi.org/10.11606/D.11.1982.tde-20220207-172826
Document
Author
Full name
Andre Luiz Melhoranca
Institute/School/College
Knowledge Area
Date of Defense
Published
Piracicaba, 1982
Supervisor
Title in Portuguese
Efeito da profundidade de incorporação no solo de herbicidas residuais na cultura da soja (Glycine max (L.) Merril)
Keywords in Portuguese
HERBICIDAS RESIDUAIS
LENÇÓIS FREÁTICOS
SOJA
SOLOS
Abstract in Portuguese
A presente pesquisa foi conduzida no município de Dourados, MS, no ano agrícola de 1980/81 com o objetivo de avaliar o efeito da profundidade de incorporação dos principais herbicidas usados na cultura da soja. Para tanto foram instalados dois experimentos, sendo um a campo e outro em vasos, em casa-de-vegetação. Os herbicidas utilizados foram trifluralin, metribuzin, vernolate e pendimethalin, nas doses respectivas de 1,11, 0,36, 3,86 e 1,50 kg i.a/ha, incorporados ao solo às profundidades de 0,2,5, 5,0 e 10,0an, sendo semeada a cultivar de soja Paraná no experimento de campo, e as cultivares Bossier, Santa Rosa e Paraná na casa­ -de-vegetação. A avaliação dos resultados foi realizada coletando-se dados de altura de plantas, população inicial e final, peso da matéria seca de plantas daninhas e dados de produção apresentada pela soja nos diferentes tratamentos, sendo observado que em condições de campo a profundidade de incorporação não afetou o desenvolvimento e produção da soja, nem tão pouco, o controle das plantas daninhas, expresso pelo seu peso da matéria seca. Entretanto, em condições de casa-de-vegetação a profundidade de incorporação afetou o peso da matéria seca da parte aérea e radicular, e a altura das plantas. A altura e peso da matéria seca da parte aérea foi mais afeta da pelo vernolate quando incorporado a 10 cm. Trifluralin incorporado a 10 cm, e pendimethalin aplicado à superficie também afetaram em menor intensidade. O sistema radicular foi mais afetado pelo pendimethalin e vernolate. A cultivar Santa Rosa, foi a que se mostrou mais sensível aos herbicidas utilizados.
Title in English
Effect of incorporation depth of residual herbicides in soybean (Glycine max (L.) Merril)
Abstract in English
The present research was developed at Iburacbs, Mato Grosso do Sul State, Brazil, in the agricultural year of 1980-1981 with the aim of evaluating the effect of the incorporation depth of the main herbicides used in soybean. There fore two experirnents have been conducted, being one in the field and the other in pots at greenhouse. Herbicides have been utilized are trifluralin, rnetribuzin, vernolate and pendirnethalin in respective doses of 1.11, 0.36, 3.86 and 1.50 kg a.i/ha incorporated to the soil at depth of 0, 2.5, 5.0 and 10.0 cm, being sown the va- riety of Paraná soybean in the f ield experiment, and Bossier , Santa Rosa and Paraná varieties in the greenhouse. The assessrnent of results has been carried out by collecting data of plants height, initial and final population and weeds dry matter weigh and production data presented by soybean at different applications, being observed that for field conditions, incorporation depth has not affected soy- bean development and production, expressed by its dry matter weigh. However, at greenhouse conditions, incorporation depth has aff ected dry matter weigh in the aerial and radicular part and plants height. Aerial part height and dry matter weigh have been more affected by vernolate when incorporated at 10 cm. Trifluralin incorporated at 10 cm and pendimethalin applied at the surface have affected at a lower intensity as well. The radicular system has been more affected by both perrli.methalin and vernolate. The Santa Rosa variety has been the one that showed itself mos sensitive to the utilized herbicides.
 
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Publishing Date
2022-02-07
 
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