The occurrence of rice leaf roller, Cnaphalocrocis medinalis Guenée in the large-scale agricultural production on Chongming Eco-island in China

Wan, Nian‐Feng; Ji, Xiang‐Yun; Cao, Liming; Jiang, Jie‐Xian

doi:10.1016/j.ecoleng.2015.01.006

Cited by 13 publications

(4 citation statements)

References 13 publications

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“…For the non‐target rice leaffolder, the abundance of C. medinalis was lowest in S100 and highest in R100. Monocultural practices have been reported to decrease the abundance of insect natural enemies and have a neutral effect on secondary pests, which may result in increased pest severity in such systems . In this study, the overall occurrence of damage symptoms caused by the non‐target rice stemborers and leaffolder was consistent with their larval abundances.…”

Section: Discussionsupporting

confidence: 71%

Effects of seed mixture sowing with resistant and susceptible rice on population dynamics of target planthoppers and non‐target stemborers and leaffolders

Wan

Wang

et al. 2018

Pest Management Science

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S10R90 produced a good yield and provided the most effective control of both target and non-target pests, with the potential to significantly reduce the application of chemical pesticides for integrated pest management in paddy fields. It is further presumed that the strategy of seed mixture with resistant and susceptible rice would be advantageous for rice yield stability. © 2018 Society of Chemical Industry.

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Section: Discussionsupporting

confidence: 71%

Effects of seed mixture sowing with resistant and susceptible rice on population dynamics of target planthoppers and non‐target stemborers and leaffolders

Wan

Wang

et al. 2018

Pest Management Science

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“…During the emergence period of rice leaf rollers, a count of adult moths was taken from a sample plot of 66.7 × 10 −3 hectares around the lamp. A two-meter long bamboo pole was used to slowly shake the top half of rice plants, working upward, and the total number of flying moths observed in the sampling plot was considered an estimate of the density of adult rice leaf rollers ( Wan et al, 2015 ). From 2001 to 2015, the population densities of rice leaf rollers were sampled from 11 June to 20 September.…”

Section: Methodsmentioning

confidence: 99%

Increasing plant diversity with border crops reduces insecticide use and increases crop yield in urban agriculture

Wan

Cai

Shen³

et al. 2018

eLife

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Urban agriculture is making an increasing contribution to food security in large cities around the world. The potential contribution of biodiversity to ecological intensification in urban agricultural systems has not been investigated. We present monitoring data collected from rice fields in 34 community farms in mega-urban Shanghai, China, from 2001 to 2015, and show that the presence of a border crop of soybeans and neighboring crops (maize, eggplant and Chinese cabbage), both without weed control, increased invertebrate predator abundance, decreased the abundance of pests and dependence on insecticides, and increased grain yield and economic profits. Two 2 year randomized experiments with the low and high diversity practices in the same locations confirmed these results. Our study shows that diversifying farming practices can make an important contribution to ecological intensification and the sustainable use of associated ecosystem services in an urban ecosystem.

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“…Cnaphalocrocis medinalis(C.medinalis) always damages rice and results in yield reduction ( Heong et al., 1993 ; Wan et al., 2015 ). The larvae spit out the silk and roll up the rice leaves from the edges to the center, feeding on the leaf flesh and remaining white damage symptoms, as shown in Figure 1 .…”

Section: Introductionmentioning

confidence: 99%

CMRD-Net: a deep learning-based Cnaphalocrocis medinalis damage symptom rotated detection framework for in-field survey

Chen

Wang

et al. 2023

Front. Plant Sci.

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The damage symptoms of Cnaphalocrocis medinalis (C.medinalis) is an important evaluation index for pest prevention and control. However, due to various shapes, arbitrary-oriented directions and heavy overlaps of C.medinalis damage symptoms under complex field conditions, generic object detection methods based on horizontal bounding box cannot achieve satisfactory results. To address this problem, we develop a Cnaphalocrocis medinalis damage symptom rotated detection framework called CMRD-Net. It mainly consists of a Horizontal-to-Rotated region proposal network (H2R-RPN) and a Rotated-to-Rotated region convolutional neural network (R2R-RCNN). First, the H2R-RPN is utilized to extract rotated region proposals, combined with adaptive positive sample selection that solves the hard definition of positive samples caused by oriented instances. Second, the R2R-RCNN performs feature alignment based on rotated proposals, and exploits oriented-aligned features to detect the damage symptoms. The experimental results on our constructed dataset show that our proposed method outperforms those state-of-the-art rotated object detection algorithms achieving 73.7% average precision (AP). Additionally, the results demonstrate that our method is more suitable than horizontal detection methods for in-field survey of C.medinalis.

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The occurrence of rice leaf roller, Cnaphalocrocis medinalis Guenée in the large-scale agricultural production on Chongming Eco-island in China

Cited by 13 publications

References 13 publications

Effects of seed mixture sowing with resistant and susceptible rice on population dynamics of target planthoppers and non‐target stemborers and leaffolders

Effects of seed mixture sowing with resistant and susceptible rice on population dynamics of target planthoppers and non‐target stemborers and leaffolders

Increasing plant diversity with border crops reduces insecticide use and increases crop yield in urban agriculture

CMRD-Net: a deep learning-based Cnaphalocrocis medinalis damage symptom rotated detection framework for in-field survey

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