Energy effectiveness of the production of winter broad beans, raised at a different degree of moisture support.

The influence of the irrigation over the energy effectiveness of the production of winter fodder broad beans of “Merris Binna” kind has been studied. The experiment was conducted in Agricultural Institute – Stara Zagora, Bulgaria. The following variants were tested: 1.Without irrigation-control ; 2.Optimally irrigated (3 times of watering); 3. Without irrigation in the stage “bloom”; 4. Without irrigation in the stage“pod forming”; 5. Without irrigation in the stage “grain forming”. It was established that the irrigation has a positive influence over the received energy from the biomass of winter fodder broad beans and the energy effectiveness of its production. The highest energy efficiency ratio is obtained from variants without irrigation in the stage “grain forming”: Gross Energy (GE) = 8.78 MJ, metabolizable energy (ME) = 4.71 MJ and Net Energy (NE) = 2.77 MJ