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EFFECT OF APPLIED FERTILIZERS ON VEGETATIVE GROWTH AND "SOIL RESPIRATION" IN ORGANICALLY GROWN TR. MONOCOCCUM L. by Plamen ZOROVSKI, Veselka VLAHOVA, Atanas SEVOV, Tonya GEORGIEVA

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ЕFFICACY AND AFTER-EFFECT OF HERBICIDE PREPARATIONS IN THE MAIZE-WHEAT CROP-ROTATION UNIT by Maya DIMITROVA, Shteliyana KALINOVA, Tonya GEORGIEVA, Plamen ZOROVSKI

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ECONOMIC RESULTS FROM THE APPLICATION OF FOLIAR TREATMENTS FOLUR, AMALGEROL AND LITHOVIT ON RICE PRODUCTION by Tonya GEORGIEVA, Vanya TOROMANOVA, Vasko KOPRIVLENSKI, Maya DIMITROVA, Plamen ZOROVSKI

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