Comparison of Thermal Storage on Stability of Two Fungicides Mancozeb andMancozeb Modified Dimethomorph and Their Impurities Ethylenethiourea

Document Type : Original Article

Authors

1 Pesticide analysis Res, Dep. Central Agric. Pesticides Lab., Agric. Res. Center, Dokki, Giza, Egypt

2 Damanhour University, Faculty of Agriculture, Plant Protection Department, Damanhour, Egypt

3 Suez canalUniversity,Faculty of Agriculture, Plant Protection Department, Ismailia, Egypt

10.21608/jpces.2017.459311

Abstract

Two fungicides under trade name uthane80% (mancozeb) wettable powder (WP)and volar mz 69% WP (mancozeb 60% modified dimethomorph 9%)were stored for 14 days at 54C according to FAO specification 1980 to study stability of active ingredients dimethomorph and mancozeb and study behavior of its impurities ethylenethiourea (ETU) under storage conditions also physical properties of two fungicides studied. The results illustrated that dimethomorph and mancozeb active ingredientin volar mz formulation were slightly affected by thermal temperature of storage and become conformity with FAO specification and it became 8.55% and 58.51% after 14 days of storage respectively. But in uthane formulation mancozeb active ingredient was decomposed to reached 77.60% after 14 days of storage and become nonconformity with FAO specification. Ethylenethiourea was more stable in fungicide mancozeb modified dimethomorph than mancozeb and it was increased with increasing time of storage to reached 0.146% in volar mzformulation and reached to 0.40% in uthaneformulation after 14 days of storage. All physical properties pass successfully and conformity with FAO specification under storage for 14 days at 540C.

Keywords

Journal of Pest Control and Environmental Sciences
Volume 22, Issue 1
2017
Pages 48-55

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