EFFECT OF CONIFEROUS NEEDLE PRODUCTS ON STRAWBERRY PLANT DEVELOPMENT, PRODUCTIVITY AND SPREADING OF PESTS AND DISEASES
Several coniferous needle products such as pine and spruce needle powder SM 87, pine and spruce needle extracts Ausma and Fitoekols IF were tested on strawberries to estimate their influence on plant development, productivity, fruit quality and spreading of pests and diseases. Strawberry cultivar Induka was used in experiments. Plants were grown on open field in single rows in conventional production system. A randomized block design with four replicates was used. Ausma was applied one time per month in 0.2% concentration by watering with dose 1 L per row meter. Powder SM 87 was scattered three times per season with dose 100 g per row meter. Fitoekols IF in 4% concentration was sprayed on plants three times per season. In 2005 an additional treatment with conventional spraying system was included. Coniferous needle extract Ausma showed some positive influence on plant development in the first growing years and reduced spring frost damage, but the effect was not significant with tested dose. Coniferous needle powder SM 87 reduced strawberry blossom weevil incidence and increased the yield, but it was not so effective as treatment with chemical plant protection products. There was not observed any significant influence of tested coniferous needle products on spreading of diseases and mites and fruit quality.
Laugale, V. and Daugavietis, M. (2009). EFFECT OF CONIFEROUS NEEDLE PRODUCTS ON STRAWBERRY PLANT DEVELOPMENT, PRODUCTIVITY AND SPREADING OF PESTS AND DISEASES. Acta Hortic. 842, 239-242
Fragaria × ananassa, plant growth, yield, fruit quality, plant protection