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Determination of Economic Threshold Level (ETL) of Jassid, Amrasca bigutulla bigutulla (Cicadellidae:Homoptera)

Determination of Economic Threshold Level (ETL) of Jassid, Amrasca bigutulla bigutulla (Cicadellidae:Homoptera)

Shoaib Nawaz1, Muhammad Razaq1, Zahid Mahmood Sarwar1*, Muhammad Sajjad1*, Syeda Aneeza Ubaid1, Muhammad Asif Zulfiqar2 and Usman Haider

1Department of Entomology, FAST, Bahauddin Zakariya University, Multan, Punjab, Pakistan; 2PARC, Research and Training Station Bahauddin Zakariya University, Multan, Punjab, Pakistan.

sajjad8676@gmail.com  

Figure 1

Comparison of Jassid densities between nitenpyram applied at ETL and Calendar basis comparison with control. Mean values on sampling dates labeled with sing headed arrow indicates the date of spraying of nitenpyram at calendar basis whereas double headed arrows indicated its application whenever jassid reached to ETL. 

Figure 2

Mean okra yield obtained from nitenpyram sprayed (at calendar and ETL basis) and control plots. Bars labeled with common letters are significantly different at P<0.05. 

Pakistan Journal of Zoology

February

Vol. 51, Iss. 1, Pages 1-398

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