Study of the Possibility for Twofold Harvesting of Annual Winter Cereal and Legume Crops and Mixtures in the Region of the Central Balkan Mountains

Vl. LINGORSKI and T. KERTIKOV

Institute of Mountain Stockbreeding and Agriculture, BG - 5600 Troyan, Bulgaria
Institute of Forage Crops, BG - 5800 Pleven, Bulgaria

Abstract

LINGORSKI, Vl. and T. KERTIKOV, 2010. Study of the possibility for twofold harvesting of annual winter cereal and legume crops and mixtures in the region of the central Balkan Mountains. Bulg. J. Agric. Sci., 16: 687-691

During the 2007-2009 periods in the Institute of Mountain Stockbreeding and Agriculture Troyan a study was conducted on the possibility for twofold harvesting of annual winter cereal and legume crops and mixtures for production of green forage. Three pure stands of one cereal and two legume crops and 2 mixtures between them were tested in the following variants: 1. Wintering pea; 2. Winter vetch (Control); 3. Winter barley; 4. Winter barley + Wintering pea; 5. Winter barley + Winter vetch. It was found that under initial harvesting at the stage of “early flowering” (1st stage) the mixture of winter barley + wintering pea was distinguished for the maximum productivity of dry mass, and among the pure stands winter barley. At seed formation in the lower pods of pea (2nd stage) the mixture of winter barley + winter vetch was the most productive, and among the pure stands wintering pea. Irrespective of the stage of initial harvesting and nature of the stands (pure or mixed), the sown cereal and legume forage crops occupied the greatest relative portion in the areas.

Key words: winter cereal and legume crops, mixtures, twofold harvesting, yields, weed infestation

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