Global Advanced Research Journal of Agricultural Science (ISSN: 2315-5094) Vol. 4(4) pp. 182-187, April, 2015. Available online http://garj.org/garjas/index.htm Copyright © 2015 Global Advanced Research Journals Full Length Research Paper Efficiency of Zinc sulfate and some volatile oils on some insect pests of the tomato crop Sawsan, S. Moawad, Aziza Sharaby, Ibrahim M. Ebadah and Huda El-Behery Pests and Plant Protection Department, National Research Center, Cairo Accepted 21 March, 2015 The test was targeted to compare the efficacy of different components (including, Zinc Sulfate, Clove, Bitter orange) on some insect pests of the tomato crop during winter season. The data was cleared that spraying tomato leaves by 2.5% zinc sulfate only capable causing mortality to Bemisia, Liriomyza and Tuta reached 53.8, 62.5 and 62.55%. While spraying the natural oil only caused mortality ranged between 70 to 90%. The highest reduction to Bemisia and Tuta infestation was recorded in case of treatment with clove oil only or in combine with bitter orange and zinc sulfate. In general, mixed three component together had ability to cause the highest mortality of Tuta larvae, reached 97%. Keyword: Zinc Sulfate, Clove, Bitter orange, Tomato crop, Liriomyza trifolii, Tuta absoluta Bemisia argentifolii. INTRODUCTION Insect pest infestation is one of the most devastating aspects of tomato planting. They are infested by several insect pests which caused reduction quality and qualitative of the market yield. Probably, the most common insect pests attack the tomato crop are serpentine leaf miner Liriomyza trifolii Burgess (Diptera: Agromizidae) Silver leaf Whitefly, Bemisia argentifolii Bellows and Perring (Homoptera: Alerodidae) and tomato leafminer Tuta absoluta Meyrick (Lepidoptera: Gelechiidae) during winter season in Egypt (Abd-Rabou 2005 and Simmons and Abd- Rabou 2007). Heavy infestation by the insect pests caused reduction the photosynthetic capacity of the plant, or transmission granulosis viruses' disease which affects the development of flowers and fruits. To overcome insect pests must be started before the *Corresponding Author's Email: abzs9999@yahoo.com pests' levels reach economic threshold level. The protection control method by using fertilizers or natural oils considers the safest and promising way to minimize insect population and lesser usage insecticide. Zinc Sulfate is the inorganic component which act as safety fertilizer to plant which increased crop yield and as insect growth regulator that disrupted endocrine system of insect (Sharaby et al.2013). On the other hand, usage natural plant oil in control program considered one of the most safety materials due to disability to persist for long time, i.e. low their residue. They have antifeedants, repellency or/and toxic effect toward insect pests. The present work aimed to evaluate the efficiency of Zinc Sulfate and some natural plant oils (alone or combine together) to protect of the tomato plants from some insect pests infestation.