Investigating the potential for double-harvesting late-spring crops and mixes in the Central Balkan mountain foremountain areas

Abstract

A research was carried out from 2007 to 2009 at the Institute of Mountain Stockbreeding and Agriculture -
Troyan on the feasibility of double-harvesting yearly late-spring crops and forage mixes. Various
combinations of grass and legume crops, as well as three separate stands of each, were examined in the
following ways: The following are the possible combinations: 1. Spring pea "Pleven 4" 2. Sudangrass
(Control) 3. Sorghum-Sudangrass hybrid 4. Sudangrass + Spring pea 5. Sorghum-Sudangrass hybrid +
Spring pea 1.During the first stage of harvesting, which occurs when grass crops are just starting to bloom,
the sorghum-Sudangrass hybrid and its mixture with spring pea outperformed the control stand of
Sudangrass in terms of maximum productivity. The hybrid outperformed the control by 55.03 percent, while
the mixture with spring pea exceeded it by 51.9 percent. The second cut yields were created by the grass
crops at both phases after the initial harvest. Regardless of the stage of first harvesting or the type of stands
(mixed or pure), the regions with the highest concentration of seeded fodder crops had the fewest weeds.