INFLUENCE OF NITROGEN, PHOSPHORUS AND
MOLYBDENUM FERTILIZATION, ALONE AND IN COMBINATION ON THE WINTER FABA
BEAN ENERGY EFFICIENCY OF PRODUCTION
Rusinka
Petkova1, Tsenka Zhelyazkova2, Dimitar Pavlov2
1Agricultural Institute, 6000
Stara Zagora, Bulgaria
2Trakia University, 6000 Stara Zagora, Bulgaria
dpavlov@af.uni-sz.bg
During
three year period at the Agricultural Institute, Stara
Zagora (Bulgaria),
influence of fertilization with Nitrogen, Phosphorus and Molybdenum alone
and in combination on the energy efficiency of winter faba bean variety
Meris Bina was investigated. In the experiment the next variants were
included: 1. unfertilized; 2. N60; 3. Р120; 4. N60Р60;
5. N120Р120; 6. Мо0,2; 7. N120Мо0,2; 8. Р120Мо0,2;
9. N120Р120Мо0,2. It was
established that the examined variants of mineral fertilization have
positive effect on obtained biomass and energy efficiency of the
production. The highest coefficient of energy efficiency was obtained
from fertilization with Molybdenum (Мо0,2)
alone– 13.63 for GE; 7.49 for ME and 4.43 for NE, which was respectively
with 13.,05%, 13.73% and 13.85% higher compared to the unfertilized faba
bean.
Key words: winter faba; fertilization; energy input and
output; energy efficiency
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