Field Cage Assessment of Feeding Damage by <i>Riptortus pedestris</i> on Soybeans in China
The bean bug, <i>Riptortus pedestris</i>, is a major pest of soybeans. In order to assess the critical stages of soybean damage by <i>R. pedestris</i>, we tested the damage to soybeans at different growth stages (R<sub>2</sub>, R<sub>4</sub>, and R<...
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MDPI AG
2021-03-01
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| Series: | Insects |
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| Online Access: | https://www.mdpi.com/2075-4450/12/3/255 |
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| author | Wenjing Li Yu Gao Yinglu Hu Juhong Chen Jinping Zhang Shusen Shi |
| author_facet | Wenjing Li Yu Gao Yinglu Hu Juhong Chen Jinping Zhang Shusen Shi |
| author_sort | Wenjing Li |
| collection | DOAJ |
| description | The bean bug, <i>Riptortus pedestris</i>, is a major pest of soybeans. In order to assess the critical stages of soybean damage by <i>R. pedestris</i>, we tested the damage to soybeans at different growth stages (R<sub>2</sub>, R<sub>4</sub>, and R<sub>6</sub>) caused by five densities of <i>R. pedestris</i> (1, 2, 3, 4, and 5) through a field cage experiment. The results show that the R<sub>4</sub> stage was the most sensitive stage in terms of suffering <i>R. pedestris</i> injury damage, followed by the R<sub>6</sub> stage and then the R<sub>2</sub> stage. The number of stay green leaves was 7.04 per plant, the abortive pod rate of the soybeans was 56.36%, and the abortive seed rate of the soybeans was 46.69%. The dry weight of the soybeans was 14.20 g at the R<sub>4</sub> stage; these values of R<sub>4</sub> were significantly higher than at the R<sub>2</sub> and R<sub>6</sub> stages. However, the dry weight of soybean seed was 4.27 g and the nutrient transfer rate was 27.01% in the R<sub>4</sub> stage; these values were significantly lower than in the R<sub>2</sub> and R<sub>6</sub> stages. The number of stay green leaves, abortive pod rates, and abortive seed rates were all increased significantly with increasing pest density at each stage of soybean growth. However, the nutrient transfer rate was significantly decreased with the increase in the pest density. Soybean nutrition factors changed after they suffered <i>R. pedestris</i> injury; the lipid content of the soybean seed decreased and the lipid content of the soybean plant increased compared to controls, when tested with a density of five <i>R. pedestris</i> in the R<sub>4</sub> stage. These results will be beneficial to the future management of <i>R. pedestris</i> in soybean fields. |
| first_indexed | 2024-03-10T13:09:05Z |
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| institution | Directory Open Access Journal |
| issn | 2075-4450 |
| language | English |
| last_indexed | 2024-03-10T13:09:05Z |
| publishDate | 2021-03-01 |
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| spelling | doaj.art-d949782cf3a24b44a0db756780f5f3a22023-11-21T10:55:15ZengMDPI AGInsects2075-44502021-03-0112325510.3390/insects12030255Field Cage Assessment of Feeding Damage by <i>Riptortus pedestris</i> on Soybeans in ChinaWenjing Li0Yu Gao1Yinglu Hu2Juhong Chen3Jinping Zhang4Shusen Shi5College of Plant Protection, Jilin Agricultural University, Changchun 130118, ChinaCollege of Plant Protection, Jilin Agricultural University, Changchun 130118, ChinaCollege of Plant Protection, Jilin Agricultural University, Changchun 130118, ChinaCollege of Plant Protection, Jilin Agricultural University, Changchun 130118, ChinaCollege of Plant Protection, Jilin Agricultural University, Changchun 130118, ChinaCollege of Plant Protection, Jilin Agricultural University, Changchun 130118, ChinaThe bean bug, <i>Riptortus pedestris</i>, is a major pest of soybeans. In order to assess the critical stages of soybean damage by <i>R. pedestris</i>, we tested the damage to soybeans at different growth stages (R<sub>2</sub>, R<sub>4</sub>, and R<sub>6</sub>) caused by five densities of <i>R. pedestris</i> (1, 2, 3, 4, and 5) through a field cage experiment. The results show that the R<sub>4</sub> stage was the most sensitive stage in terms of suffering <i>R. pedestris</i> injury damage, followed by the R<sub>6</sub> stage and then the R<sub>2</sub> stage. The number of stay green leaves was 7.04 per plant, the abortive pod rate of the soybeans was 56.36%, and the abortive seed rate of the soybeans was 46.69%. The dry weight of the soybeans was 14.20 g at the R<sub>4</sub> stage; these values of R<sub>4</sub> were significantly higher than at the R<sub>2</sub> and R<sub>6</sub> stages. However, the dry weight of soybean seed was 4.27 g and the nutrient transfer rate was 27.01% in the R<sub>4</sub> stage; these values were significantly lower than in the R<sub>2</sub> and R<sub>6</sub> stages. The number of stay green leaves, abortive pod rates, and abortive seed rates were all increased significantly with increasing pest density at each stage of soybean growth. However, the nutrient transfer rate was significantly decreased with the increase in the pest density. Soybean nutrition factors changed after they suffered <i>R. pedestris</i> injury; the lipid content of the soybean seed decreased and the lipid content of the soybean plant increased compared to controls, when tested with a density of five <i>R. pedestris</i> in the R<sub>4</sub> stage. These results will be beneficial to the future management of <i>R. pedestris</i> in soybean fields.https://www.mdpi.com/2075-4450/12/3/255<i>Riptortus pedestris</i>densitydamagesoybeandevelopment stagequality |
| spellingShingle | Wenjing Li Yu Gao Yinglu Hu Juhong Chen Jinping Zhang Shusen Shi Field Cage Assessment of Feeding Damage by <i>Riptortus pedestris</i> on Soybeans in China Insects <i>Riptortus pedestris</i> density damage soybean development stage quality |
| title | Field Cage Assessment of Feeding Damage by <i>Riptortus pedestris</i> on Soybeans in China |
| title_full | Field Cage Assessment of Feeding Damage by <i>Riptortus pedestris</i> on Soybeans in China |
| title_fullStr | Field Cage Assessment of Feeding Damage by <i>Riptortus pedestris</i> on Soybeans in China |
| title_full_unstemmed | Field Cage Assessment of Feeding Damage by <i>Riptortus pedestris</i> on Soybeans in China |
| title_short | Field Cage Assessment of Feeding Damage by <i>Riptortus pedestris</i> on Soybeans in China |
| title_sort | field cage assessment of feeding damage by i riptortus pedestris i on soybeans in china |
| topic | <i>Riptortus pedestris</i> density damage soybean development stage quality |
| url | https://www.mdpi.com/2075-4450/12/3/255 |
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