Use of prolonged-acting fertilizers in growing garden strawberry seedlings

Timeliness . Currently, the Russian Federation has a high demand in healthy planting material of garden strawberries. The benefits using fertilizers when growing strawberry seedlings have been proven by numerous studies. However, comparative study effect new and methods their application is very limited. In this regard, studies aimed at identifying effectiveness use prolonged-acting production protected soil conditions are relevant. Methods Adapted to non-sterile conditions, ex vitro plants were planted peat substrate Veltorf LLC (recipe No. 5c/2) with addition Pg mix starter fertilizer structure NPK 14-16-18 + microelements (1.5 g/l substrate). At same time, introduced into recommended concentrations: FertiPro Gran 1M (1.25 substrate), Ruscote 5-6M (3.0 Basacote Plus 6M (4.0 control without fertilizers, PG standard. Results It established that for Karmen crop an average runner-forming ability, applying was revealed, which, on 180th day cultivation, number runners rosettes increases 3.5–3.8 times compared control. yield marketable 95% 70% For Jūnija smaids vine-forming all experimental variants 1M, 1,9-2,5 94-96% 65% Conclusion introduction long–acting Gran, allowed 2.3 – 3.8-fold increase obtained 1.9-3.5-fold sockets fertilizers.