Published in Scientific Papers. Series B, Horticulture, Vol. LXVI, Issue 1
Written by Claudiu MOLDOVAN, Ioan ZAGRAI, Luminița ZAGRAI, Georgeta GUZU, Smaranda ROȘU-MAREȘ, Aurel MAXIM
Organic crops in fruit growing are constantly increasing due to the market demand for residue-free products. In this context, successful organic crops require an effective control of major diseases and pests. Brown rot caused by Monilinia spp. is one of the most important and common diseases with great economic impact in plum crop. The objective of this study was to evaluate the efficacy of some organic products in brown rot control into a plum orchard by assessing disease incidence when compared with treatments with conventional fungicides. An experimental scheme of phytosanitary treatments (organic and conventional) was carried out on two plum cultivars ('Stanley’ and 'Reine Claude d’Althan’), throughout two consecutive vegetative periods (2020-2021), comprising a total of six treatments with fungicidal effect. The experience was divided in three blocks: organic, conventional and untreated control. According to the results obtained along the two years of study, the average frequency of brown rot damage for both plum cultivars was 9.5% in the conventional variant, 14.3% in organic variant, while untreated variant recorded 23.1%. The results revealed a agood potential for brown rot control by usingthe organic scheme treatments proposed but it's need to be confirmed in a long term study so that to become a suitable and reliable candidate to replace the conventional one.
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