The Role of Tillage, Allelopathy, Dormancy-Breaking Mechanisms and Wind in the Spread of Purple Nutsedge (Cyperus rotundus) in Zimbabwe
Purple nutsedge (Cyperus rotundus) is an invasive weed in tropical cultivated lands and propagates through tubers, rhizomes, seed and corms. Weedy invasive plants have unique functional traits that enable their invasiveness. The objectives of this study were to determine the drivers of the purple nu...
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2021
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| Online Access: | https://link.springer.com/article/10.1007/s40003-018-0385-8 http://hdl.handle.net/11408/4334 |
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| author | Zivanai, Musabayana Mandumbu, Ronald Mashingaidze, Nester |
| author_facet | Zivanai, Musabayana Mandumbu, Ronald Mashingaidze, Nester |
| author_sort | Zivanai, Musabayana |
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| description | Purple nutsedge (Cyperus rotundus) is an invasive weed in tropical cultivated lands and propagates through tubers, rhizomes, seed and corms. Weedy invasive plants have unique functional traits that enable their invasiveness. The objectives of this study were to determine the drivers of the purple nutsedge invasion in the Zimbabwe’s agricultural systems among allelopathy, dispersal and dormancy-breaking mechanisms. Three experiments were carried out each in the laboratory, greenhouse and field. All the experiments were in completely randomised design replicated six times. Results showed that purple nutsedge leaf, stem and tuber extracts successfully (P < 0.001) inhibited germination and radical extension of Sorghum bicolor. Cutting the seed, which mimics the plough action on tubers gave the highest (P < 0.05) sprouting compared to exposure to freezing temperatures. There was a direct relationship between dispersal distance and wind speed (R2 = 0.907). The purple nutsedge plants attached to the plough were related (R2 = 0.515) to the number of plough passes. This study confirmed that allelopathy, easiness for dispersal and dormancy-breaking by the cutting action of the plough were the drivers of the weed’s invasiveness. Therefore, allelopathy, ploughing, dispersal by wind and plough contribute to invasiveness of the weed. |
| format | Article |
| id | ir-11408-4334 |
| institution | My University |
| language | English |
| publishDate | 2021 |
| publisher | Springer |
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| spelling | ir-11408-43342022-06-27T13:49:06Z The Role of Tillage, Allelopathy, Dormancy-Breaking Mechanisms and Wind in the Spread of Purple Nutsedge (Cyperus rotundus) in Zimbabwe Zivanai, Musabayana Mandumbu, Ronald Mashingaidze, Nester Allelopathy Dispersal Dormancy Invasive Tillage Purple nutsedge (Cyperus rotundus) is an invasive weed in tropical cultivated lands and propagates through tubers, rhizomes, seed and corms. Weedy invasive plants have unique functional traits that enable their invasiveness. The objectives of this study were to determine the drivers of the purple nutsedge invasion in the Zimbabwe’s agricultural systems among allelopathy, dispersal and dormancy-breaking mechanisms. Three experiments were carried out each in the laboratory, greenhouse and field. All the experiments were in completely randomised design replicated six times. Results showed that purple nutsedge leaf, stem and tuber extracts successfully (P < 0.001) inhibited germination and radical extension of Sorghum bicolor. Cutting the seed, which mimics the plough action on tubers gave the highest (P < 0.05) sprouting compared to exposure to freezing temperatures. There was a direct relationship between dispersal distance and wind speed (R2 = 0.907). The purple nutsedge plants attached to the plough were related (R2 = 0.515) to the number of plough passes. This study confirmed that allelopathy, easiness for dispersal and dormancy-breaking by the cutting action of the plough were the drivers of the weed’s invasiveness. Therefore, allelopathy, ploughing, dispersal by wind and plough contribute to invasiveness of the weed. 2021-06-02T13:21:02Z 2021-06-02T13:21:02Z 2019 Article 2249-7218 https://link.springer.com/article/10.1007/s40003-018-0385-8 http://hdl.handle.net/11408/4334 en Agricultural Research;Vol.8 : p.461–466 open Springer |
| spellingShingle | Allelopathy Dispersal Dormancy Invasive Tillage Zivanai, Musabayana Mandumbu, Ronald Mashingaidze, Nester The Role of Tillage, Allelopathy, Dormancy-Breaking Mechanisms and Wind in the Spread of Purple Nutsedge (Cyperus rotundus) in Zimbabwe |
| title | The Role of Tillage, Allelopathy, Dormancy-Breaking Mechanisms and Wind in the Spread of Purple Nutsedge (Cyperus rotundus) in Zimbabwe |
| title_full | The Role of Tillage, Allelopathy, Dormancy-Breaking Mechanisms and Wind in the Spread of Purple Nutsedge (Cyperus rotundus) in Zimbabwe |
| title_fullStr | The Role of Tillage, Allelopathy, Dormancy-Breaking Mechanisms and Wind in the Spread of Purple Nutsedge (Cyperus rotundus) in Zimbabwe |
| title_full_unstemmed | The Role of Tillage, Allelopathy, Dormancy-Breaking Mechanisms and Wind in the Spread of Purple Nutsedge (Cyperus rotundus) in Zimbabwe |
| title_short | The Role of Tillage, Allelopathy, Dormancy-Breaking Mechanisms and Wind in the Spread of Purple Nutsedge (Cyperus rotundus) in Zimbabwe |
| title_sort | role of tillage, allelopathy, dormancy-breaking mechanisms and wind in the spread of purple nutsedge (cyperus rotundus) in zimbabwe |
| topic | Allelopathy Dispersal Dormancy Invasive Tillage |
| url | https://link.springer.com/article/10.1007/s40003-018-0385-8 http://hdl.handle.net/11408/4334 |
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