Abstract
The study evaluated the effect of prior plant cutting of common reed (Phragmites australis), during flowering, on the efficacy of isopropylamine and trimesium salts of glyphosate (2.9 and 2.6 kg a.i./ha, respectively) applied at two spray volumes in the following spring. Efficacy was measured by plant cover (% control), number of plants/m2 and plant biomass/m2. A positive effect of the plant cutting was observed when plant cover and number of plants/m2 were measured. The evaluation of herbicide phytotoxicity on plant biomass did not show significant differences. Common reed susceptibility to isopropylamine and trimesium salts of glyphosate was similar. Significant differences between the spray volumes of 320 and 400 l/ha were observed only in plant cover estimates. The 400 l/ha spray volume showed higher efficacy.
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References
Arsenovic, M. & B. Konstantinovic, 1990. Aquatic weed control with herbicides in drainage system in Yugoslavia. Proc. EWRS 8th Int. Symp. Aquat. Weeds: 13–17.
Barrett, P. R. F., 1985. Efficacy of glyphosate in the control of aquatic weeds. In Grossbard, E. & D. Atkinson (eds), The Herbicide Glyphosate. Butterwords. London: 365–374.
Buhler, D. D & O. C. Burnside, 1983. Effect of water quality, carrier volume and acid on glyphosate phytotoxicity. Weed Sci. 31: 163–169.
Buttler, A., 1992. Permanent plot research in wet meadows and cutting experiment. Vegetatio 103: 113–124.
Cowie, N. R., W. J. Sutherland, M. K. M. Ditlhogo & R. James, 1992. The effects of conservation management of reed beds. II. The flora and litter disappearance. J. appl. Ecol. 29: 277–284.
Evans, D. M., 1978. Aquatic weed control with the isopropylamine salt of N-phosphonomethyl glycine. Proc. EWRS 5th Symp. Aquat. Weeds: 171–178.
Evans, D. M., 1982. Phragmites control with glyphosate through selective equipment. Proc. EWRS 6th Symp. Aquat. Weeds: 209–211.
Fernandes, J. D., A. R. Guerreiro, T. Vasconcelos & I. Moreira, 1978. Essais de lutte contre les plantes aquatiques au Portugal. Proc. EWRS 5th Symp. Aquat. Weeds: 189–194.
Fernandes, J. D., T. Vasconcelos & J. M. Martins, 1980. Luta química contra o caniço (Phragmites australis (Cav.) Steudel). I Cong. Portugês de Fitiatria e Fitofarmacologia 4: 173–180.
Ferreira, M. T., L. Catarino & I. Moreira, 1998. Aquatic weed assemblages in an Iberian drainage channel system and related environmental factors. Weed Res. 38: 291–300.
Franco, J. A. & M. L. A. Afonso, 1980. Distribuição em Portugal das principais infestantes. I Cong. Português de Fitiatria e Fitofarmacologia 3: 1–22.
Jordan, T. N., 1981. Effect of diluent volumes and surfactants on the phytotoxicity of glyphosate to bermudagrass (Cynodon dactylon). Weed Sci. 29: 79–83.
Kay, S. H., 1995. Efficacy of wipe-on applications of glyphosate and imazapyr on common reed in aquatic sites. J. Aquat. Plant Mgmt 33: 25–26.
Moreira, I. & T. Ferreira, 1986. Aquatic weeds in Portugal. Aquaphyte 6: 6.
Moreira, I., T. Ferreira & A. Monteiro, 1989. Aquatic weed bioecology and control in Portugal - a review. In Resultados dos Projectos de Investigação Agrária. Portuguese-German Co-operation in Applied Agricultural Research 1982–1989. Vila Real: 71–106.
Mueller, T. C. & A. R. Womac, 1997. Effect of formulation and nozzle type on droplet size with isopropylamine and trimesium salts of glyphosate. Weed Techn. 11: 639–643.
Murphy, K. J. & J. W. Eaton, 1982. Ecological effects of four herbicides and two mechanical clearance methods used for aquatic weed control in canals. Proc. EWRS 6th Symp. Aquat. Weeds: 201–217.
Reimer, D. N., 1976. Long-term effects of glyphosate applications to Phragmites. J. Aquat. Plant Mgmt 14: 39–43.
Sandberg, C. L., W. F. Meggit & D. Penner, 1978. Effect of diluent volume and calcium on glyphosate phytotoxicity. Weed Sci. 26: 476–479.
Seddon, J. C., 1982. The control of aquatic weeds with the isopropylamine salt of N-phosphonomethyl glycine. Proc. EWRS 6th Symp. Aquat. Weeds: 141–148.
Stahlman, P.W. & W. M. Phillips, 1979. Effect of water quality and spray volume on glyphosate phytotoxicity. Weed Sci. 27: 38–41.
Van Thai K., V. V. Vandiver, Jr. & R. D. Connant, 1986. Effect of herbicide rate and carrier volume on glyphosate phytotoxicity. J. Aquat. Plant Mgmt 24: 66–69.
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Monteiro, A., Moreira, I. & Sousa, E. Effect of prior common reed ( Phragmites australis )cutting on herbicide efficacy . Hydrobiologia 415, 305–308 (1999). https://doi.org/10.1023/A:1003825217542
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DOI: https://doi.org/10.1023/A:1003825217542