EFFECT OF MULCHING BY ORGANIC WASTES ،DEPTH OF PLNTING AND SEED SIZE ON SEEDLING EMERGENCE AND GROWTH OF BROAD BEAN IN SALINITY SOIL.

Abstract

The Experiment was carried out in field of Mussayab Technical College during the growing season 2008 – 2009 in to Broad Bean plant local variety. the study included twelve treatments are consisting three factors its two size of seeds ( small 1.7 g \ grain , large 3.7 g \ grain ) and three depth of planting ( 4 , 8 , 12 cm) . and tow treatments ,first :mulching by crushed wheat straw by 0.5 tons \ dunum putting on the lines of Agriculture and left the other without mulching . Applied experience as randomized complete block design RCBD with three replicates and then compared the averages by less significant difference test and a probability level of 0.05 . Results showed that: That large Seed size that mulching with plant residues planted in depth between 4 – 8 cm showed significant differences in (rate and speed of seedling emergence after 15 days of cultivation , height of plant , dry weight of plant and root, and number of flowers after 60 days of cultivation ) by 95%, 3.41 gesture \ day, 82 cm, 31.1 g, 9.3 g and 0.60 flower \ plant respectively.while small size grains without mulching planted in 12cm depth had given the following values for the same qualities previous a 19%, 0.55 gesture \ Day, 34 cm, 10.9 g, 3.9 g, 10 flower \ plant respectively in salty soil