Response of sweet corn (zea mays saccharata L.) to different levels of organic and inorganic fertilizers . 2 - flowering and yield parameters

Abstract

This study was conducted in the Agriculture research station of Chamchamal in Sulymaniyah / Iraq, on 3rd July to 8th October 2022. Was designed using a (RCBD) four *four with three replications. The arrangement of treatment is as follows, The first treatment was chemical fertilizer (NPK) consisting of four levels (0, 50, 75and 100)% of recommended application dose. The second treatment of two types of poultry manure (0, 4ton ha-1 domestic, 4ton ha-1 imported, and 2ton ha-1 from domestic and imported), results obtained from this study can conclude as follows. yield component (Days to 75% flowering (male and silk) appearance, number of row, weight of 500 grains and yield per plant, as well as the quantity of grains per row and cob)were significantly superior with the use of chemical and poultry manure application compared with the control, the better yield and its component of sweet corn was from the combination of two fertilizers(organic and inorganic) At the 50% of recommended inorganic fertilizer and 4 ton ha-1 of domestic poultry manure