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- Title
IMPACT OF FERTILIZATION RATES ON INFESTATION WITH POTATO TUBER MOTH, PHTHORIMAEA OPERCULELLA (ZELLER).
- Authors
ABDALLAH, YOUSSEF E. Y.
- Abstract
Field trials were conducted at Shalakan district, Qalyubyia Governorate during two successive seasons (2009 and 2010) to evaluate the effect of certain fertilization rates on the infestation with Potato Tuber Moth (PTM), Phthorimaea apercu/ella (Zeller). Results indicated that foliage infestation by PTM decreased as rate of fertilization was increased, with the averages of 25.8, 17.4, 14.5 and 13.9 larvae/100 leaflets recorded in control, half, recommended and 2-fold rates of fertilization, respectively during 2009 season. The infestation underwent the same trend for 2010 season, being 28.3, 19.3, 15.7 and 14.4 larvae/100 leaflets. The analysis of variance for the data showed significant differences between treatments. The obtained results infer that infestation in potato tubers was comparatively higher in 2010 season than 2009 season. The infestation increased in tubers as rate of fertilization was decreased. Increasing rates of fertilization may strengthen foliage and roots growth, offset of tubers deep in soil, so plants could tolerate PTM infestation.
- Subjects
FERTILIZATION (Biology); POTATO tuberworm; POTATO diseases &; pests
- Publication
Egyptian Journal of Agricultural Research, 2015, Vol 93, Issue 1(B), p583
- ISSN
1110-6336
- Publication type
Article