Influence of the Species of the Leguminous Predecessor upon the Productivity of Common Wheat
2008
Gerdzhikova, M. (Tracian University, Stara Zagora (Bulgaria)) | Videva, M. (Tracian University, Stara Zagora (Bulgaria)) | Eneva, S. (Tracian University, Stara Zagora (Bulgaria))
The influence of the species of the leguminous predecessor upon the productivity of common wheat was studied at the training and experimental base of Tracian University in the 2003-2007 period. The predecessors used were winter forage pea and soybean. The crops were grown without irrigation. The experiment was carried out under the conditions of traditional and biological production. As a result of the research that was carried out, it was established that with both traditional and biological production higher yields from the wheat were proven after winter forage pea - 4215 kg/ha and 3329 kg/ha respectively - in comparison with the wheat after soybean - 3860 kg/ha and 2989 kg/ha respectively. The higher yield from the wheat after pea was a result of the higher values of the structural elements of the yield - number of the grains per ear, weight of the grain per ear and weight of 1000 grains. The decrease in the productivity of common wheat by prolonged draught was stronger after soybean as a predecessor.
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