Investigating the Impact of Root-Lesion Nematodes (<i>Pratylenchus thornei</i>) and Crown Rot (<i>Fusarium pseudograminearum)</i> on Diverse Cereal Cultivars in a Conservation Farming System
In two experiments on a farm practicing conservation agriculture, the grain yield of a range of wheat cultivars was significantly (<i>p <</i> 0.001) negatively related to the post-harvest population densities of <i>Pratylenchus thornei</i> in the soil profile to 45 cm dept...
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MDPI AG
2021-04-01
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| Series: | Agronomy |
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| Online Access: | https://www.mdpi.com/2073-4395/11/5/867 |
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| author | John P. Thompson Timothy G. Clewett |
| author_facet | John P. Thompson Timothy G. Clewett |
| author_sort | John P. Thompson |
| collection | DOAJ |
| description | In two experiments on a farm practicing conservation agriculture, the grain yield of a range of wheat cultivars was significantly (<i>p <</i> 0.001) negatively related to the post-harvest population densities of <i>Pratylenchus thornei</i> in the soil profile to 45 cm depth. In a third and fourth experiment with different rotations, methyl bromide fumigation significantly (<i>p</i> < 0.05) decreased (a) a low initial population density of <i>P. thornei</i> in the soil profile to 90 cm depth and (b) a high initial population of <i>P. thornei</i> to 45 cm depth, and a medium level of the crown rot fungus, <i>Fusarium pseudograminearum</i>, at 0–15 cm depth to a low level. For a range of wheat and durum cultivars, grain yield and response to fumigation were highly significantly (<i>p <</i> 0.001) related to (a) the <i>P. thornei</i> tolerance index of the cultivars in the third experiment, and (b) to both the <i>P. thornei</i> tolerance index and the crown rot resistance index in the fourth experiment. In the latter, grain yield was significantly <i>(p</i> < 0.001) positively related to biomass at anthesis and negatively related to percentage whiteheads at grain fill growth stage. One barley cultivar was more tolerant to both diseases than the wheat and durum cultivars. Crop rotation, utilizing crop cultivars resistant and tolerant to both <i>P. thornei</i> and <i>F. pseudograminearum</i>, is key to success for conservation farming in this region. |
| first_indexed | 2024-03-10T11:52:24Z |
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| institution | Directory Open Access Journal |
| issn | 2073-4395 |
| language | English |
| last_indexed | 2024-03-10T11:52:24Z |
| publishDate | 2021-04-01 |
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| record_format | Article |
| series | Agronomy |
| spelling | doaj.art-be7561f484604303beded02959aca5652023-11-21T17:34:43ZengMDPI AGAgronomy2073-43952021-04-0111586710.3390/agronomy11050867Investigating the Impact of Root-Lesion Nematodes (<i>Pratylenchus thornei</i>) and Crown Rot (<i>Fusarium pseudograminearum)</i> on Diverse Cereal Cultivars in a Conservation Farming SystemJohn P. Thompson0Timothy G. Clewett1Centre for Crop Health, Institute for Agriculture and the Environment, University of Southern Queensland, West Street, Toowoomba, QLD 4350, AustraliaCentre for Crop Health, Institute for Agriculture and the Environment, University of Southern Queensland, West Street, Toowoomba, QLD 4350, AustraliaIn two experiments on a farm practicing conservation agriculture, the grain yield of a range of wheat cultivars was significantly (<i>p <</i> 0.001) negatively related to the post-harvest population densities of <i>Pratylenchus thornei</i> in the soil profile to 45 cm depth. In a third and fourth experiment with different rotations, methyl bromide fumigation significantly (<i>p</i> < 0.05) decreased (a) a low initial population density of <i>P. thornei</i> in the soil profile to 90 cm depth and (b) a high initial population of <i>P. thornei</i> to 45 cm depth, and a medium level of the crown rot fungus, <i>Fusarium pseudograminearum</i>, at 0–15 cm depth to a low level. For a range of wheat and durum cultivars, grain yield and response to fumigation were highly significantly (<i>p <</i> 0.001) related to (a) the <i>P. thornei</i> tolerance index of the cultivars in the third experiment, and (b) to both the <i>P. thornei</i> tolerance index and the crown rot resistance index in the fourth experiment. In the latter, grain yield was significantly <i>(p</i> < 0.001) positively related to biomass at anthesis and negatively related to percentage whiteheads at grain fill growth stage. One barley cultivar was more tolerant to both diseases than the wheat and durum cultivars. Crop rotation, utilizing crop cultivars resistant and tolerant to both <i>P. thornei</i> and <i>F. pseudograminearum</i>, is key to success for conservation farming in this region.https://www.mdpi.com/2073-4395/11/5/867root-lesion nematode<i>Pratylenchus thornei</i>crown rot<i>Fusarium pseudograminearum</i>wheatdurum |
| spellingShingle | John P. Thompson Timothy G. Clewett Investigating the Impact of Root-Lesion Nematodes (<i>Pratylenchus thornei</i>) and Crown Rot (<i>Fusarium pseudograminearum)</i> on Diverse Cereal Cultivars in a Conservation Farming System Agronomy root-lesion nematode <i>Pratylenchus thornei</i> crown rot <i>Fusarium pseudograminearum</i> wheat durum |
| title | Investigating the Impact of Root-Lesion Nematodes (<i>Pratylenchus thornei</i>) and Crown Rot (<i>Fusarium pseudograminearum)</i> on Diverse Cereal Cultivars in a Conservation Farming System |
| title_full | Investigating the Impact of Root-Lesion Nematodes (<i>Pratylenchus thornei</i>) and Crown Rot (<i>Fusarium pseudograminearum)</i> on Diverse Cereal Cultivars in a Conservation Farming System |
| title_fullStr | Investigating the Impact of Root-Lesion Nematodes (<i>Pratylenchus thornei</i>) and Crown Rot (<i>Fusarium pseudograminearum)</i> on Diverse Cereal Cultivars in a Conservation Farming System |
| title_full_unstemmed | Investigating the Impact of Root-Lesion Nematodes (<i>Pratylenchus thornei</i>) and Crown Rot (<i>Fusarium pseudograminearum)</i> on Diverse Cereal Cultivars in a Conservation Farming System |
| title_short | Investigating the Impact of Root-Lesion Nematodes (<i>Pratylenchus thornei</i>) and Crown Rot (<i>Fusarium pseudograminearum)</i> on Diverse Cereal Cultivars in a Conservation Farming System |
| title_sort | investigating the impact of root lesion nematodes i pratylenchus thornei i and crown rot i fusarium pseudograminearum i on diverse cereal cultivars in a conservation farming system |
| topic | root-lesion nematode <i>Pratylenchus thornei</i> crown rot <i>Fusarium pseudograminearum</i> wheat durum |
| url | https://www.mdpi.com/2073-4395/11/5/867 |
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