Efeitos da interação de ácido ferúlico e glifosate em soja

Interaction of ferulic acid and glyphosate on soybeans

Efeitos da interação de ácido ferúlico e glifosate em soja

Interaction of ferulic acid and glyphosate on soybeans

Elemar Voll

Eng. Agr., Ph.D., Pesquisador da EMBRAPA/CNPSo, Caixa Posta1 1061, CEP 86001-970, Londrina, PR

RESUMO

Um experimento foi conduzido com soja [Glycine max (L.) Merr.] cv. Ramson, em condições de casa-de-vegetação, com o objetivo de obter resposta de crescimento ao herbicida glifosate [N-(fosfonometil) glicina] (GLI), com atividades hormonais, em interação com ácido ferúlico (ácido 4-hidróxi-3-metóxi-t-cinâmico) (AF), substância alelopática encontrada na resteva de trigo em situações de semeadura direta, que pudessem favorecer sua competição com as espécies daninhas. Glifosate foi usado nas doses de 0,0, 0,75, 1,5, 2,25 e 3,0 kg/ha e ácido ferúlico nas doses de 0,75, 150, 225 e 300 ppm. O delineamento experimental foi de blocos ao acaso em um arranjo fatorial 5x5 dos tratamentos, com quatro repetições. Vasos de papel encerado continham 1,0 kg de terra na proporção de 3:2 (argila/areia), com duas plantas/vasos. A duração do experimento foi de 22 dias. Aplicações de AF e GLI causaram estiolamento da parte aérea das plantas de soja e redução da biomassa das raízes. Foram observados aumentos de biomassa a parte aérea da soja por AF e reduções por CLI.

Palavras-chave: Glycine max, semeadura direta, resteva, alelopatia.

ABSTRACT

An experiment was carried out for soybeans [Glycine max (L.) Merr.] cv. Ramson, under greenhouse conditions, to evaluate its growing responses to glyphosate [N-(phosphonomethyl) glycine] (GLY), a herbicide with hormonal action, in interaction with ferulic acid (4-hydroxy-3-methoxy-t-cinnamic acid) (FA), an allelopathic substance found in wheat straw under no-till plantings, which in combination could favour competition against weeds Doses of 0.00, 0.75, 1.50, 2.25 and 3.00 kg/ha of glyphosate and 0,75, 150, 225 and 300 ppm pf ferulic acid were used. A randomized block design in factorial 5x5, with four replications was used. Paper pots were filled with 1,0 kg of mixed soil (3:2 clay/sand), with two plants/pot. The duration of experiment was 22 days. Applications of FA and GLY caused etiolation of soybean shoots and decrease of root biomass. Increases of soybean shoot biomass observed for FA were red

Additional index words: Glycine max, no-till, mulch, allelopathy.

Texto completo disponível apenas em PDF.

Full text available only in PDF format.

LITERATURA CITADA

Recebido para publicação em 21/03/93 e na forma revisada em 20/06/93.

• ALMEIDA, FS; RODRIGUES, BN. Plantio Direto. In: Guia de Herbicidas: Contribuiçăo para o uso adequado em plantio direto e convencional. Londrina, IAPAR, 1984, pp.341-399.
• BAIRD, DD; UPCHURCH, RP; HOMESLY, WB; PRANZ, JE. Introduction of a new broad spertrumpostemergence herbicide class with utility for herbaceus perennial weed control. In: North Central Weed Sci. Conf., 26, 1971. Proceedings p.64-68.
• BAUR, JR; BOVERY, RW; VEECH, JA. Effects of glyphosate on sorghum growth.Weed Abstract, 191: 79, 1976.
• COCHRAN, VL; ELLIOT, LF; PAPENDICK, RI. The production of phytotoxins from surface crop residues. Soil Sci Soc Am. J., 41: 903-908, 1977.
• COLLINS, FC; CAVINESS, CE. Growth of soybeans on wheat straw residue. In: Amer. Soc. Agron.: Crop Sci. Soc. Amer. & Soil Sci. Soc. Amer., 70, Chicago, 1978. Agronomy Abstracts, p.92.
• GUENZI, WD; McCALLA, TM. Inhibition of germination and seedling development by crop residues. In: Soil. Sci. Soc., 26, 1962. Proceedings, p.456-458.
• GUENZI, WD; McCALLA, TM. Phenolic acids in oats, wheat, sorghum, and corn residues and their phytotoxicity. Agronomy Journal, 58: 303-304, 1966.
• HARDCASTLE, WS. Weed control in conventional, nontilled and stable bed plantings of soybeans. In: South. Weed Sci. Soc., 26, New Orleans, 1972, Proceedings, p.88.
• LIEBL, RA; WORSHAM, AD. Tillage and mulch effects on morning glory (Ipomoea spp.) and certain other weed species. In: South. Weed Sci. Soc., 36, Biloxi, 1983, Proceedings, p.405-414.
• PAPENDICK, RI; MILLER, DE. Conservation tillage systems in the Pacific Northwest. Journal of Soil Conservation, 32:49-56, 1977.
• PATRICK, ZA; KOCH, LW. Inhibition of respiration, germination, and growth by substances arising during the decommposition of certain plant residues in the soil. Canadian Journal of Botany, 36: 621-647, 1958.
• RODRIGUES, JJV; WORSHAM, AD; CORBIN, FT. Exudation of glyphosate from wheat(Triticum aestiwun) plants and on interplanted corn (Zea mays) and soybean (Glycine max). Weed Science, Champaign, 30: 316-320, 1982.
• STEINSIEK, JW; OLIVER, LR; COLLINS, FC. The effect of phytotoxic substances from wheat straw on selected weeds. In: South. Weed Sci. Soc., 33, Hot Springs, 1980, Proceedings, p.65.
• VOLL, E. Efeitos do ácido ferúlico em interaçőes com densidades de soja [Glycine max (L.) Merr. cv. Bragg] e caruru (Amaranthus retroflexus L.). In: Congr. Bras. Herb. Pl. Dan., 16, Campo Grande, 1986, Resumos, p.7.
• WILLIAMSON, DH. Effects of glyphosate [N-(phosphonomethyl) gycine] on conventionally and no-till planted corn (Zea maysL.) and soybeans (Glycine maxL.). Raleigh, NCSU, 1978, 76p, Tese Mestrado.
• WORSHAM, AD; LEWIS, WM. No-tillage corn and soybeans with glyphosate. In: South. Weed Sci. Soc., 26, New Orleans, 1972, Proceedings, p.42.

Datas de Publicação

• Publicação nesta coleção
  23 Maio 2012
• Data do Fascículo
  1993

Histórico

• Recebido
  21 Mar 1993
• Aceito
  20 Jun 1993