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- Title
QUICK INDEXING OF HUANGLONGBING ON THE BASIS OF SYMPTOMOLOGY AND IODO-STARCH TEST IN RELATION TO ENVIRONMENTAL FACTORS.
- Authors
Saifullah; Imran-ul-Haq; Iftikhar, Yasir; Khan, Sajid Aleem; Jaskani, M. Jafar; Samiullah; Tariq, Rana Muhammad Sabir
- Abstract
Huanglongbing (HLB) is one of the devastating diseases in major citrus growing areas of the world. The disease has posed a threat for citrus industry with a considerable loss in production. A survey was carried out for monitoring of HLB in citrus growing areas of Sargodha district. Symptomology and iodo-starch test were two parameters for quick indexing of disease in the field. The disease incidence was in the range of 8.2 to 11.4%. Characteristic symptoms such as mottling and Zn-deficiency like symptoms were observed in the leaves suspected to be infected of citrus samples. Iodo-starch test was found to be reliable for starch accumulation in HLB infected samples in the field. The correlation of maximum, minimum temperature and relative humidity with symptomatic expression was found significant while the rainfall had negative impact on progression of disease.
- Subjects
CITRUS greening disease; BACTERIAL diseases of plants; CITRUS diseases &; pests; CITRUS fruit growing; CITRUS fruit industry
- Publication
Pakistan Journal of Agricultural Sciences, 2015, Vol 52, Issue 4, p1005
- ISSN
0552-9034
- Publication type
Article