Comparison of Diquat, Glufosinate, and Saflufenacil for Desiccation of ‘Dark Red Norland’ Potato
Chemical desiccants are commonly used to regulate tuber size, strengthen skin, and facilitate harvest for potato (Solanum tuberosum) production. Glufosinate is labeled for potato vine desiccation; however, limited data are available. Saflufenacil, a protoporphyrinogen oxidase–inhibiting herbicide, i...
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| Format: | Article |
| Language: | English |
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American Society for Horticultural Science (ASHS)
2019-08-01
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| Series: | HortTechnology |
| Subjects: | |
| Online Access: | https://journals.ashs.org/horttech/view/journals/horttech/29/5/article-p643.xml |
| _version_ | 1818240093787258880 |
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| author | J. Harrison Ferebee IV Charles W. Cahoon Michael L. Flessner David B. Langston Ramon Arancibia Thomas E. Hines Hunter B. Blake M. Carter Askew |
| author_facet | J. Harrison Ferebee IV Charles W. Cahoon Michael L. Flessner David B. Langston Ramon Arancibia Thomas E. Hines Hunter B. Blake M. Carter Askew |
| author_sort | J. Harrison Ferebee IV |
| collection | DOAJ |
| description | Chemical desiccants are commonly used to regulate tuber size, strengthen skin, and facilitate harvest for potato (Solanum tuberosum) production. Glufosinate is labeled for potato vine desiccation; however, limited data are available. Saflufenacil, a protoporphyrinogen oxidase–inhibiting herbicide, is an effective desiccant in other crops. Field research was conducted to evaluate glufosinate and saflufenacil as desiccants applied to ‘Dark Red Norland’ potato. Desiccants consisted of diquat, glufosinate, saflufenacil, glufosinate plus carfentrazone, and glufosinate plus saflufenacil applied at three timings, DESIC-1, DESIC-2, and DESIC-3, when size B potatoes averaged 43%, 31%, and 17% of total potato weight. Potato vine desiccation was more difficult at DESIC-1 and DESIC-2 because of immature vines. Diquat was the most effective desiccant 7 days after treatment (DAT), desiccating potato vines 88% at DESIC-1 7 DAT. Glufosinate alone desiccated potato vines 65% at the same timing; however, carfentrazone and saflufenacil added to glufosinate increased vine desiccation 8% and 16% compared with glufosinate alone, respectively. Vine desiccation by all treatments ranged 99% to 100% at 14 DAT. Desiccant and timing effects on skin set were determined using a torque meter before harvest. Skin set resulting from all desiccants and timings ranged between 1.88 and 2 lb-inch, and no significant differences were observed. No significant differences in yield were noted among desiccants. This research indicates that glufosinate and saflufenacil are suitable alternatives to diquat for potato vine desiccation; however, safety of saflufenacil applied to potatoes before harvest has not been determined. |
| first_indexed | 2024-12-12T13:07:58Z |
| format | Article |
| id | doaj.art-e2a1d9394fa841d78c8170de7dcf7643 |
| institution | Directory Open Access Journal |
| issn | 1943-7714 |
| language | English |
| last_indexed | 2024-12-12T13:07:58Z |
| publishDate | 2019-08-01 |
| publisher | American Society for Horticultural Science (ASHS) |
| record_format | Article |
| series | HortTechnology |
| spelling | doaj.art-e2a1d9394fa841d78c8170de7dcf76432022-12-22T00:23:36ZengAmerican Society for Horticultural Science (ASHS)HortTechnology1943-77142019-08-01295https://doi.org/10.21273/HORTTECH04327-19Comparison of Diquat, Glufosinate, and Saflufenacil for Desiccation of ‘Dark Red Norland’ PotatoJ. Harrison Ferebee IV Charles W. Cahoon Michael L. FlessnerDavid B. LangstonRamon ArancibiaThomas E. Hines Hunter B. BlakeM. Carter Askew Chemical desiccants are commonly used to regulate tuber size, strengthen skin, and facilitate harvest for potato (Solanum tuberosum) production. Glufosinate is labeled for potato vine desiccation; however, limited data are available. Saflufenacil, a protoporphyrinogen oxidase–inhibiting herbicide, is an effective desiccant in other crops. Field research was conducted to evaluate glufosinate and saflufenacil as desiccants applied to ‘Dark Red Norland’ potato. Desiccants consisted of diquat, glufosinate, saflufenacil, glufosinate plus carfentrazone, and glufosinate plus saflufenacil applied at three timings, DESIC-1, DESIC-2, and DESIC-3, when size B potatoes averaged 43%, 31%, and 17% of total potato weight. Potato vine desiccation was more difficult at DESIC-1 and DESIC-2 because of immature vines. Diquat was the most effective desiccant 7 days after treatment (DAT), desiccating potato vines 88% at DESIC-1 7 DAT. Glufosinate alone desiccated potato vines 65% at the same timing; however, carfentrazone and saflufenacil added to glufosinate increased vine desiccation 8% and 16% compared with glufosinate alone, respectively. Vine desiccation by all treatments ranged 99% to 100% at 14 DAT. Desiccant and timing effects on skin set were determined using a torque meter before harvest. Skin set resulting from all desiccants and timings ranged between 1.88 and 2 lb-inch, and no significant differences were observed. No significant differences in yield were noted among desiccants. This research indicates that glufosinate and saflufenacil are suitable alternatives to diquat for potato vine desiccation; however, safety of saflufenacil applied to potatoes before harvest has not been determined.https://journals.ashs.org/horttech/view/journals/horttech/29/5/article-p643.xmlmechanical harvestpreharvest conditioningskin setsolanumtuberosumtuber size |
| spellingShingle | J. Harrison Ferebee IV Charles W. Cahoon Michael L. Flessner David B. Langston Ramon Arancibia Thomas E. Hines Hunter B. Blake M. Carter Askew Comparison of Diquat, Glufosinate, and Saflufenacil for Desiccation of ‘Dark Red Norland’ Potato HortTechnology mechanical harvest preharvest conditioning skin set solanumtuberosum tuber size |
| title | Comparison of Diquat, Glufosinate, and Saflufenacil for Desiccation of ‘Dark Red Norland’ Potato |
| title_full | Comparison of Diquat, Glufosinate, and Saflufenacil for Desiccation of ‘Dark Red Norland’ Potato |
| title_fullStr | Comparison of Diquat, Glufosinate, and Saflufenacil for Desiccation of ‘Dark Red Norland’ Potato |
| title_full_unstemmed | Comparison of Diquat, Glufosinate, and Saflufenacil for Desiccation of ‘Dark Red Norland’ Potato |
| title_short | Comparison of Diquat, Glufosinate, and Saflufenacil for Desiccation of ‘Dark Red Norland’ Potato |
| title_sort | comparison of diquat glufosinate and saflufenacil for desiccation of dark red norland potato |
| topic | mechanical harvest preharvest conditioning skin set solanumtuberosum tuber size |
| url | https://journals.ashs.org/horttech/view/journals/horttech/29/5/article-p643.xml |
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