THE EFFECT OF ORGINIC MATTER AND POTASSIUM FERTILIZERS ON GROWTH AND YIELD OF BROAD BEAN (Vicia faba L. )

Abstract

Field experiment was conducted in the farm of Agriculture College, Diyala University during winter season 2010 – 2011 in silty clay soil to investigate the effect of potassium and organic manure on growth and yield of broad bean – Spanish cultivar ( barcelona). Three poultry residues levels (0,2.5 and 5 ton.ha-1 and three levels of potassium fertilizers levels (0,50,75kg . ha-1 )were used . RCBD in a factorial experiment was used , with three replicates. Results was showed that a significant differences among organic residue levels the addition with 5 tons . ha-1 was significantly the best on plant height , number of branches , dry weight , %K in shoot , leaves chlorophyll content , weight of 1000 grains , and total yield compared with no addition , that gives lowest means in the studied parameters . On the other hand the results revealed a significant differences among potassium levels in all growth and yield parameters , the third level of potassium (75)kg k.ha-1 was significantly the best in plant height, number of branches , dry weight , % K in shoot , leaves chlorophyll content , weight of 1000 grains and total yield , compared with no addition . two interaction treatment ( 5 tons .ha-1 + 75 kg . ha -1 ) and ( 5tons , ha-1 +50 kg k. ha-1 ) was significantly the best in most of the studied characters.