Effect of agrometeorological conditions and fertilization on the yield of barley, grown on carbonate chernozem in northwest Bulgaria
2000
Stamboliev, M. | Davidkov, E. | Tsvetanova, K. (Complex Experimental Station, BG-3600 Lom (Bulgaria))
In the years, favorable for the development of barley, grown on carbonate chernozem, at 27% probability ,yield increase can reach 203 kg/dka at fertilization rate N10P8, compared to fertilization with N4. The value of multifactor correlation coefficient between the quantity of nitrogen and phosphorus fertilizers applied and the yield is R=0.97. In medium favorable years, at 42% probability, the difference between yields of the two variants is smaller- 93 kg/dka at a value of the multifactor correlation coefficient R=0.92. In unfavortable years, at 31% probability, there is no effect from fertilization (R=0.03).
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