Effect of fertilizer type and spraying with growth regulator on growth and yield of squash in open cultivation

Abstract

Afield experiment carried out at the College of Agriculture / University of Diyala during the season 2021 according to Randomized Complete Block Design (RCBD) with three repeated, to study the effect of two factors. the first factors was to the soil fertilization by three types of the fertilizers, bird droppings and chemical Fertilizer 20-20-20 and Di Ammonium Phosphate . the second factor was spraying with growth regulator (Floratone), control treatment plants , Plants treated at a concentration of 0.6 g.L-1 every 7 days every 14 days . The results showed the treatment of fertilizing with chemical fertilizer 20-20-20 was significantly superiority in the percentage of the flowering (66.96%) , fruits number (4.150 fruits.plant-1 ) and early yield ( 662.6g.plant-1) and a significantly superiority for untreated plants with Floratone (P0) in the chlorophyll index (45.68).