Phenacoccus saccharifolii (Green) (Pseudococcidae: Hemiptera) on sugarcane in Tamil Nadu, India

IF 1.1 4区综合性期刊 Q3 MULTIDISCIPLINARY SCIENCES

Current Science Pub Date : 2022-11-10 DOI:10.18520/cs/v123/i9/1142-1151

N. Geetha, R. Viswanathan, T. Ramasubramanian, K. Salin, C. Yogambal, P. Devi, S. Karthigeyan, N. Chitra

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Abstract

In this study, we report Phenacoccus saccharifolii (green) on sugarcane in Tamil Nadu, India, though an earlier un-reported isolated occurrence was observed by us in the farmers’ fields at Pugalur, Tamil Nadu. This pest has now become a major threat to sugarcane cultivation across the state as it can often kill the infested canes with or without the association of the fungal disease, pokkah boeng. Field observations revealed that the ratoon crop was affected more than the plant crop in the same locality. This species was found in large colonies, primarily between the –2 and +1 leaf of the sugarcane plant and hence, named as crown mealybug. Infestation leads to severe mottling in the leaf whorl and death of the central shoot. To the best of our knowledge, there are no earlier studies on the occurrence of this mealybug on Saccharum spontaneum L. Well-deve-loped colonies showed high activity of three encyrtid parasitoids, viz. Aenasius phenococci (Ashmead), Aenasius arizonensis (Girault) and Leptomastix dactylopii Howard in the areas surveyed.

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印度泰米尔纳德邦甘蔗上的糖化棘球绦虫(绿色)(伪球虫科:半翅目)

在这项研究中，我们报道了印度泰米尔纳德邦甘蔗上的糖粉棘球菌(绿色)，尽管我们在泰米尔纳德邦Pugalur农民的田地中观察到早期未报道的孤立发生。这种害虫现在已经成为全州甘蔗种植的主要威胁，因为它经常可以杀死受感染的甘蔗，无论是否与真菌疾病有关。田间观测结果表明，同一地区再生作物受影响程度大于植物作物。本种主要分布在甘蔗2叶和1叶之间的大群体中，因此被称为冠粉蚧。侵染导致叶轮严重斑驳，中心枝死亡。据我们所知，目前还没有关于这种粉蚧在Saccharum spontaneum L.上发生的研究。在调查的地区，发育良好的菌落显示三种蜂类寄生蜂(Aenasius phenococci (Ashmead)， Aenasius arizonensis (Girault)和Leptomastix dactylopii Howard)具有较高的活性。

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来源期刊

Current Science 综合性期刊-综合性期刊

CiteScore

1.50

自引率

10.00%

发文量

审稿时长

3 months

期刊介绍： Current Science, published every fortnight by the Association, in collaboration with the Indian Academy of Sciences, is the leading interdisciplinary science journal from India. It was started in 1932 by the then stalwarts of Indian science such as CV Raman, Birbal Sahni, Meghnad Saha, Martin Foster and S.S. Bhatnagar. In 2011, the journal completed one hundred volumes. The journal is intended as a medium for communication and discussion of important issues that concern science and scientific activities. Besides full length research articles and shorter research communications, the journal publishes review articles, scientific correspondence and commentaries, news and views, comments on recently published research papers, opinions on scientific activity, articles on universities, Indian laboratories and institutions, interviews with scientists, personal information, book reviews, etc. It is also a forum to discuss issues and problems faced by science and scientists and an effective medium of interaction among scientists in the country and abroad. Current Science is read by a large community of scientists and the circulation has been continuously going up. Current Science publishes special sections on diverse and topical themes of interest and this has served as a platform for the scientific fraternity to get their work acknowledged and highlighted. Some of the special sections that have been well received in the recent past include remote sensing, waves and symmetry, seismology in India, nanomaterials, AIDS, Alzheimer''s disease, molecular biology of ageing, cancer, cardiovascular diseases, Indian monsoon, water, transport, and mountain weather forecasting in India, to name a few. Contributions to these special issues ‘which receive widespread attention’ are from leading scientists in India and abroad.