Objetive.

The work aimed to determine the efficacy of six local biopreparations for the control of leaf diseases of strawberry cultivation.

Materials and Methods.

An experiment was conducted at the Camacho farm in the municipality of Pamplona Norte de Santander, Colombia. A randomized block design was used with nine treatments, six local biopreparations, three controls (one sanitized, one unsanitary and one chemical).

Results.

The most important foliar diseases of the strawberry were Ramularia tulasnei, Colletotrichum sp., Botrytis cinerea and Xanthomonas fragariae. The biopreparations Rhizosphere Broth and Efficient Microorganisms (ME) are superior to the chemical treatment with mancozeb for the spot by Ramularia. The bio-products Rhizphere Broth and ME showed similar results that the chemical control against Botrytis rot, Xanthomonas spot, and anthracnose on leaves, flowers and fruits, but the incidence levels of this disease were between 46 and 55% in flowers and between 56 and 63% in fruits.

Conclusions.

The biopreparations Rhizphere Broth and ME were superior to the chemical treatment with Dithane to maintain the spot by Ramularia at acceptable levels of severity, as well as the bacterial spot and Botrytis rot, and although they were similar to the chemical control against anthracnose in leaves, flowers and fruits, however, the levels of incidence anthracnose in flowers and fruits are not desired, threatening the profitability of the farmer.

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