Thriving Situation of White Backed Planthopper (Sogatella furcifera H.) in Sindh Province Pakistan
Thriving Situation of White Backed Planthopper (Sogatella furcifera H.) in Sindh Province Pakistan
Muhammad Haroon Hullio1,4, Abdul Ghani Lanjar2, Abdul Rahman Dhuyo3, Imran Khattri4 and Agha Mushtaque Ahmed4*
ABSTRACT
White-backed planthopper (WBPH) Sogatella furcifera is one of the most important insect pests of rice throughout the Asia. The recent abundance of pest in Pakistan is in ascending order that requires high attention. Therefore, this study was designed to observe the emerging suitation of WBPH in Sindh province which is the main stack holding area of rice. Three different ecological zones of Sindh province including Larkana, Jacobabad and Badin were selected. The study was based on a sample of 25 tillers covering all area from an acre in order to record the pest population randomly. Later, the pest population was also recorded at particular stages of rice (tillering, milking and booting) with effect of abiotic factors (temperature and relative humidity). In last, the varietal screening of 30 local rice varieties in term of pest population was observed. The data were collected for two rice growing seasons 2012 to 2013. In results, the maximum mean population of 15.25 WBPH/25 hills at 38 0C with 50% relative humidity was observed in district Badin in the first week of August, 2012. The correlation results regarding mean population of WBPH also indicated effect of temperature and relative humidity (r= 0.51, 0.63 and 0.85 in Larkana, Jacobabd and Badin). In crop stages, the WBPH was observed highest in booting stage in district Badin 11.21±0.45 in year 2012. In varietal screening, the highest population of 3.87±0.49 was recorded on IR-8 and the lowest on RH-302 (0.87±0.26). However, the results in 2013 were recorded different with the maximum mean population of 3.58±0.77 on DR-57 and the lowest on IR-8 (2.03±0.33). The present findings will be useful to manage strategy in order to reduce the pest population of WBPH in future that ultimately affect the yield of rice.
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