Yields and Botanical Composition of Smooth Bromegrass (Bromus inermis Leyss.) After Leaf Fertilization

V. LINGORSKI
Research Institute of Mountain Stockbreeding and Agriculture, BG-5600 Troyan, Bulgaria

Abstract

LINGORSKI, V., 2002. Yields and botanical composition of smooth bromegrass (Bromus inermis Leyss.) after leaf fertilization. Bulg. J. Agric. Sci., 8: 377–380

The influence of the leaf fertilization with the suspension fertilizer Lactofol O (with 8 l.ha–1, 12 l.ha–1 and 16 l.ha–1) compared to soil mineral fertilization (with 80 kg.ha–1 N, 80 kg.ha–1 P2O5 and 80 kg.ha–1 K2O) of some bioproductive indices (dry matter yield and botanical composition) of smooth bromegrass (Bromus inermis Leyss.) monoculture cultivated in the foothill region of Central Northern Bulgaria, was studied.
During the two years of harvesting a maximum dry matter productivity and a minimum weed infestation was obtained from mineral fertilization, which exceeded the unfertilized standard with 53.8 %. The self-dependent leaf fertilization with Lactofol O (irrespective of the rate) yields a less dry matter and hadn't an effect.

Key words: perennial grass, leaf fertilizer, harvest-haymaking phase, dry matter, botanical composition