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Complex paste-like fertilizers of Polyazophos - a component of Slavic technology



Complex paste-like fertilizers of Polyazophos - a component of Slavic technology



Kartofel' i Ovoshchi (7): 7-8



Following reports on the use, in potato production, of complex paste-like fertilizers (CPFs; mixtures of macroelements (N, P, K) and microelements (Fe, Zn, B, Mo, Mg, Cu, Mn) as well as growth regulators and fungicides) from the company Polyazophos as part of the integrated resource-saving technology of improved agricultural production developed in Belarus (and dubbed "Slavic technology"), the effectiveness of these CPFs was tested in field trials in the Klintsy region of Bryansk province, Russia, at the "Progress" Cooperative Farm, where Slavic technology has been used over many years to give potato yields of 25-28 t/ha. Cultivars Bryanskii Delikates, Nevskii and Debryansk were cultivated with or without CPF treatment. Results showed that the effectiveness of CPF treatment depended on cultivar, as well as on CPF composition and method of application. For example, highest yields in Bryanskii Delikates were achieved using the copper-containing formulation PKS-2 (2 kg/t) to treat seed tubers in autumn, together with 2 applications to plants (4 kg/ha) during growth; compared with the untreated control, yields were increased by 23% (to 23.7 t/ha). There was also a reduction in disease incidence and an increase in tuber starch content (by 1.9%).

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