EFFECT OF VARIETY AND SPRAYING WITH SEAWEED AND PLASTIC COVER ON SOME VEGETATIVE GROWTH PROPERTIES AND YIELD OF. ON AUTUMN LUG

Abstract

A field Experiment was conducted during the fall season 2018 in the research stationary of the Department of Horticulture and Gardening Engineering – College of Agriculture, University of Diyala of study the effect of variety and spraying with seaweed and the color of plastic cover on the growth and yield of potato. A factorial experiment was designed according to the Desing plot Split Split system using the full random sector design (R.C.B.D) with three replications. it include the experiment three factors which is, first factor: two varieties of potatoes (which differ from origin Arizona and fandango) second factor :Three concentrations of seaweed extract (Phylgreen mira) 0, 2.5 ,5 ml. L-1 , the Third factor: three transaction of Coverage the without coverage is the comparison treatment and the coverage with white polyethylene (transparent) and coverage with yellow polyethylene. Results showed outweigh the product was Arizona variety and Spray with concentration 2.5 ml. L-1 and cover with yellow cover a significant superiority at the rate of , number of total tubers per plant , number of marketable tubers ,total plant yield , one marketable plant yield, marketable yield, total tubers yield which was to13.800 tubers Plant -1 , 13.066 tubers Plant -1, 1002.00 g plant -1 , 974.67 g plant -1 , 64.973 ton.ha-1 , 66.800 ton.ha-1 respectively.