Abstract
Experiments were conducted in the Central Jordan Valley on lemon trees to determine the influence of both pruning and nitrogen fertilization on citrus leafminer, Phyllocnistis citrella Stainton, and its parasitoids. Increasing rates of fertilization with urea (0.46% N) on 6- 2 year-old Eureka lemon trees resulted in increasing numbers of live larvae, pupae and parasitized larvae of citrus leafminer. Numbers of live larvae and parasitized larvae were greatest at 0.85 kg of urea per tree, after which numbers began to decrease. Numbers of pupae reached a peak at 1 kg of urea per tree. Consequently, growers should avoid applying >0.85 kg of urea per tree, as higher amounts will result in increased numbers of pupae and lower rates of parasitism. Summer pruning in which the pruned branches were placed under the trees resulted in decreasing numbers of live larvae and pupae without affecting numbers of parasitized larvae.
Sign-in/Register to access full text options 
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a callDisclaimer: All third-party content on this website/platform is and will remain the property of their respective owners and is provided on "as is" basis without any warranties, express or implied. Use of third-party content does not indicate any affiliation, sponsorship with or endorsement by them. Any references to third-party content is to identify the corresponding services and shall be considered fair use under The CopyrightLaw.
