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Understanding the challenges associated with replacing Methyl Bromide: tobacco, horticulture and grain storage industries. Dr U. Mazarura, Department of.

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Presentation on theme: "Understanding the challenges associated with replacing Methyl Bromide: tobacco, horticulture and grain storage industries. Dr U. Mazarura, Department of."— Presentation transcript:

1 Understanding the challenges associated with replacing Methyl Bromide: tobacco, horticulture and grain storage industries. Dr U. Mazarura, Department of Crop Science, University of Zimbabwe

2 Alternatives Tobacco – metam sodium – 1.3.D and chloropicrin – 1.3.D and MITC – Burning – Float tray system Grain – Phosphine (aluminum phosphide/magnesium phosphide) – Contact insecticide: pirimiphos methyl with permethrin (actellic super ) Cut Flowers – Steam – Chemicals as for tobacco

3 Current consumption Minimal Increases QPS usage (about 21 tons)

4 However, Sustainability challenges (Results from 2011 growers survey) Only11% used the floating tray system although 61% had heard about the technology and could not use it citing the: cost (48%) substrate availability problems, lack of know how (39%) An alarming 74 % sterilized their seedbed by burning wood

5 Challenges are underpinned by: Lack of information on alternatives An increase in the grower base (e.g. Zim in 2013). Agro companies unsure of the alternatives market Have maintained traditional nematicides or insecticides. A good number were supplementary chemicals e.g. nematicitdes

6 Challenges are underpinned by: Work and registration of alternatives viewed as risky by traditional players because of market uncertainties In grain phosphine application expensive – sheets, safety equipment Resistance build up is an issue Worker training on safe handling and usage a continual burden

7 Challenges are underpinned by: Single problematic alternative in grain: uncertainties – Needs longer exposure. – Insect resistance – Poor penetration in bulk storage – Less effective on eggs For grain IPM could be the answer of other technologies

8 Solutions Need for training in technology Need for substrate to be available on farm Hence need for use of farm waste Need for documents written for farmer: e.g. technical manuals IPM concept needed by farmers Strengthening poor regulations e.g. in Zim Min. of agric does not know what Min. of environment is doing.

9 Solutions Main stream alternatives into curricula of schools, colleges, universities Build capacity of regulatory personnel


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