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Chilean Journal of Agricultural Research
Instituto de Investigaciones Agropecuarias, INIA
ISSN: 0718-5820
EISSN: 0718-5839
Vol. 73, No. 1, 2013, pp. 24-30
Bioline Code: cj13004
Full paper language: English
Document type: Research Article
Document available free of charge

Chilean Journal of Agricultural Research, Vol. 73, No. 1, 2013, pp. 24-30

 en Field bindweed ( Convolvulus arvensis check for this species in other resources L.) and redroot pigweed ( Amaranthus retroflexus check for this species in other resources L.) control in potato by pre- or post-emergence applied flumioxazin and sulfosulfuron
Vasilakoglou, Ioannis; Dhima, Kico; Paschalidis, Konstantinos; Gatsis, Thomas; Zacharis, Konstantinos & Galanis, Miltos

Abstract

Field bindweed ( Convolvulus arvensis check for this species in other resources L.) is one of the most serious weeds in potato ( Solanum tuberosum check for this species in other resources L.), but selective herbicides controlling this weed have not been reported. A field experiment was conducted in 2010 and repeated in 2011 in Greece to study the efficacy of herbicides flumioxazin and sulfosulfuron, applied pre- or post-emergence, on field bindweed and redroot pigweed ( Amaranthus retroflexus check for this species in other resources L.), as well as their phytotoxicity on potato. Gas chromatography-mass spectrography (GC-MS) and high-performance liquid chromatography (HPLC) analyses were conducted for possible herbicide residues in potato tubers. Also, the efficacy of these herbicides on field bindweed generated from root fragments was investigated in greenhouse pot experiments. In pots, both herbicides provided 78% to 100% control of field bindweed generated from root fragments. In field, both herbicides when applied pre-emergence at 72 to 144 g ai ha-1 provided 65% to 100% field bindweed control. However, the corresponding post-emergence applications did not provide satisfactory weed control. All treatments provided excellent control of redroot pigweed. Potato growth was not significantly affected by herbicide application in 2010. However, in 2011, post-emergence applications of flumioxazin caused significant crop injury and yield reduction. The results of this study indicate that satisfactory control of field bindweed and redroot pigweed, as well as high potato yield can be obtained by the pre-emergence application of flumioxazin or sulfosulfuron at 72 to 144 g ai ha-1, without herbicide residues on potato tubers.

Keywords
Herbicide residues, phytotoxicity, Solanum tuberosum

 
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