EFFECT OF NITROGEN AND IRON AT TOW LEVELS OF FIELD CAPASITY ON THE GROWTH AND YIELD OF LINSEED

Abstract

Pots experiment of linseed was carried out during the winter growingseason of 2011-2012 at Mosul university in clay soil. The experimental designwas factorial experiment using CRD with three replicates. To study the twolevels of field capacity (50%, 75%), three levels of nitrogen (0, 100, 200) kgN/h and three levels of iron (ferrous sulphat) (0.5, 1, 1.5)% Fe.The resultsshowed That increasing nitrogen fertilizer levels to 200kg N/h, iron at 1.5% Feand the containing Moisture of soil 75% of field capacity significantly increasein plant height (cm), number of branches/plant, number of leaves/ plant, numberof capsules/plant and seeds yield/plant (g). Also the highestvalue of number ofseeds/capsules when plants treated with 200kg N/h 1% Fe fertilized and thecontaining moisture of soil 50% of field capacity. The second order interactionsbetween different factors show significantly differences in the studiedcharacters. This study Concluded that the flax crops sensitive to water stress andneed to provide humidity containing ready for absorption from soil, also itresponses highly effect to nitrogen and iron fertilizer in increase seed yield.