Whitebacked planthopper, Sogatella furcifera Horvath (Homoptera: Delphacidae) is a migratory and very serious pest of rice crop in Pakistan. The experiment was carried out to study the population dynamics by capturing Whitebacked planthopper (WBPH) in light traps and its association with abiotic factors (temperature, relative humidity and rainfall). Population dynamics was monitored using light traps installed in four rice growing districts viz., Sheikhupura, Gujranwala, Narowal and Bahawalnagar of Punjab province in Pakistan. Results revealed that mostly population of WBPH started to appear on traps during first week of September and peak population of WBPH recorded in 2nd and 3rd week of October with a decline started in the end of November. Weather variables shown significant relationship with WBPH population dynamics. Rainfall showed positive increased influence synchronization with pest population in light traps. The correlation data exhibited positive correlation of WBPH population on light trap with relative humidity in September. Minimum temperature disclosed significant and negative association with WBPH population in October. Results of the present investigation suggest that weather variables significantly affected the population dynamics of S. furcifera.

中文翻译：

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非生物因素对 SOGATELLA FURCIFERA HORVATH (DELPHACIDAE: HOMOPTERA) 种群动态的影响

白背飞虱 Sogatella furcifera Horvath（同翅目：Delphacidae）是巴基斯坦水稻作物的一种洄游性非常严重的害虫。该实验旨在通过在光阱中捕获白背飞虱 (WBPH) 及其与非生物因素（温度、相对湿度和降雨量）的关联来研究种群动态。使用安装在巴基斯坦旁遮普省 Sheikhupura、Gujranwala、Narowal 和 Bahawalnagar 四个水稻种植区的光阱监测人口动态。结果显示，大部分 WBPH 种群在 9 月的第一周开始出现在诱捕器上，WBPH 的种群峰值出现在 10 月的第 2 和第 3 周，11 月底开始下降。天气变量显示出与 WBPH 种群动态的显着关系。降雨显示出与光陷阱中害虫种群同步增加的积极影响。相关数据显示，9 月份光阱上的 WBPH 种群与相对湿度呈正相关。10 月最低温度与 WBPH 人口显着负相关。本调查的结果表明，天气变量显着影响了 S. furcifera 的种群动态。