WEKO3
アイテム
Fall armyworm damage in African smallholder maize fields and its impact on yield
https://doi.org/10.34556/0002000704
https://doi.org/10.34556/0002000704f3dc99fa-c88b-49e8-993b-450a500b6eac
| 名前 / ファイル | ライセンス | アクション |
|---|---|---|
International_symp2019-_39-44 (761.4 KB)
|
|
| Item type | 国際農研デフォルトアイテムタイプ（フル）(1) | |||||||
|---|---|---|---|---|---|---|---|---|
| 公開日 | 2025-02-07 | |||||||
| タイトル | ||||||||
| タイトル | Fall armyworm damage in African smallholder maize fields and its impact on yield | |||||||
| 言語 | en | |||||||
| 作成者 |
Baudron, Frédéric
× Baudron, Frédéric
|
|||||||
| アクセス権 | ||||||||
| アクセス権 | open access | |||||||
| アクセス権URI | http://purl.org/coar/access_right/c_abf2 | |||||||
| 内容記述 | ||||||||
| 内容記述タイプ | Abstract | |||||||
| 内容記述 | Fall armyworm (FAW, Spodoptera frugiperda J.E. Smith) is an invasive lepidopteran pest established in most of sub-Saharan Africa since 2016. Although the immediate reaction of governments has been to invest in chemical pesticides, control methods based on agronomic management would be more affordable to resource-constrained smallholders and minimize risks for health and the environment. However, little is known about the most effective agronomic practices that could control FAW under typical African smallholder conditions. In addition, the impact of FAW damage on yield in Africa has been reported as very large, but these estimates are mainly based on farmers’ perceptions, and not on rigorous field scouting methods. Thus, our objectives were to understand the factors influencing FAW damage in African smallholder maize fields and quantify its impact on yield, using two districts of Eastern Zimbabwe as cases. A total of 791 smallholder maize fields were scouted for FAW damage during the 2017/18 season and the heads of the corresponding farming households were interviewed. Grain yield was later determined in 167 (about 20%) of these fields. The same FAW damage survey was repeated in 2018/19 with the same farmers. 638 maize fields were thus surveyed (153 farmers didn’t plant maize that season). Grain yield was then determined in 386 (about 60%) of these fields. FAW damage was found to be significantly reduced by rotation with a legume or a fallow, legume intercropping, minimum- or zero-tillage, balanced fertilization, the application of manure and/or compost, frequent weeding and early planting, in at least one of the seasons under study. Conversely, the presence of a hedgerow and pumpkin intercropping was found to significantly increase FAW damage (during both seasons). FAW damage appeared significantly higher in plots receiving pesticides (during both seasons), suggesting poor efficacy of the pesticides or application method used. We also found evidence of varietal effects on FAW damage during both seasons. Our best estimate of the impact of FAW damage on yield was 11.57% in 2017/18, which is much lower than what previous studies reported. Although our study presents limitations, losses due to FAW damage in Africa could have been over-estimated. In 2018/19, however, our estimate of FAW damage was double the 2017/18 estimate (22.37%), possibly because of an interaction between FAW and drought. This study demonstrates the viability of using agronomic management to control FAW in African smallholder conditions. It is guiding on-going work from CIMMYT and its partners to develop the most cost-effective practices. These include zero-tillage, push-pull and pheromone trapping in irrigated maize. Preliminary results from this empirical work are presented. | |||||||
| 言語 | en | |||||||
| 内容記述 | ||||||||
| 内容記述タイプ | Other | |||||||
| 内容記述 | JIRCAS International Symposium 2019, Session 1: Important Transboundary Insect Pests Chair: Youichi Kobori |
|||||||
| 言語 | en | |||||||
| 出版者 | ||||||||
| 出版者 | Japan International Research Center for Agricultural Sciences (JIRCAS) | |||||||
| 言語 | ||||||||
| 言語 | eng | |||||||
| 資源タイプ | ||||||||
| 資源タイプ識別子 | http://purl.org/coar/resource_type/c_c94f | |||||||
| 資源タイプ | conference presentation | |||||||
| 出版タイプ | ||||||||
| 出版タイプ | VoR | |||||||
| 出版タイプResource | http://purl.org/coar/version/c_970fb48d4fbd8a85 | |||||||
| ID登録 | ||||||||
| ID登録 | 10.34556/0002000704 | |||||||
| ID登録タイプ | JaLC | |||||||
| 関連情報 | ||||||||
| 関連タイプ | isPartOf | |||||||
| 識別子タイプ | DOI | |||||||
| 関連識別子 | https://doi.org/10.34556/0002000694 | |||||||
| 関連名称 | International research collaboration to tackle transboundary plant pests : Contributions to Sustainable Development Goals | |||||||
| 書誌情報 |
en : JIRCAS International Symposium Proceedings : International research collaboration to tackle transboundary plant pests : Contributions to Sustainable Development Goals 巻 2019, p. 39-44, 発行日 2020-01 |
|||||||
| 会議記述 | ||||||||
| 会議名 | JIRCAS International Symposium 2019 : International research collaboration to tackle transboundary plant pests : Contributions to Sustainable Development Goals | |||||||
| 主催機関 | Japan International Research Center for Agricultural Sciences (JIRCAS) | |||||||
| 開催期間 | 2019-11-26 | |||||||
| 開催会場 | Convention Hall 200, Tsukuba International Congress Center | |||||||
| 開催国 | JPN | |||||||
