Influence of N fertilizing on Single-cut Sorgum × Sudangrass Hybrids’ Forage Yield and Nutritive Profile

Authors : Uğur ÖZKAN, Nesim YILDIZ, Celal PEKER

Pages : 61-72

Doi:10.46592/turkager.1252187

View : 37 | Download : 71

Publication Date : 2023-06-30

Article Type : Research Paper

Abstract :The study aimed to observe the effects of two forage sorghum hybrids and different nitrogenous insert ignore into journalissuearticles values(N); fertilizer rates. The current study was set up in randomized complete block insert ignore into journalissuearticles values(RCB); as a split-plot design with triplicate at the Field Crops Department experimental area, University of Ankara in the 2022 summer season. This experiment included two treatments which had forage sorghum hybrids insert ignore into journalissuearticles values(Hay day and Super-graze); and nitrogen fertilization rates in the form of 18% ammonium sulfate [control group with no nitrogen insert ignore into journalissuearticles values(N0);, 120 kg ha-1 N insert ignore into journalissuearticles values(N1);, 180 kg ha-1 N insert ignore into journalissuearticles values(N2);]. N fertilizing rates positively influenced in agronomic profiles, yield components and nutritive profiles. The plant height insert ignore into journalissuearticles values(197.24-221.72 cm);, green herbage yield insert ignore into journalissuearticles values(GHY); insert ignore into journalissuearticles values(60.42-70.89 ton ha-1);, dry matter insert ignore into journalissuearticles values(DM); yield insert ignore into journalissuearticles values(17.77-23.98 ton ha-1);, crude protein insert ignore into journalissuearticles values(CP); yield insert ignore into journalissuearticles values(0.97-1.90 ton ha-1);, metabolic energy insert ignore into journalissuearticles values(ME); yield insert ignore into journalissuearticles values(33070.17-51840.85 Mcal ha-1);, net energy production insert ignore into journalissuearticles values(NEp); yield insert ignore into journalissuearticles values(21164.91-33178.15 Mcal ha-1); increased with applied N rates. The maximum of DM insert ignore into journalissuearticles values(33.83%);, CP insert ignore into journalissuearticles values(7.90%);, TDN insert ignore into journalissuearticles values(58.63%);, ME insert ignore into journalissuearticles values(2.16 Mcal kg-1 DM);, NEp insert ignore into journalissuearticles values(1.80 Mcal kg-1 DM);, and the minimum of ADF insert ignore into journalissuearticles values(33.09%);, NDF insert ignore into journalissuearticles values(53.17%);, ADL insert ignore into journalissuearticles values(5.14%); were obtained in N2 rates. In light of the results; “Hay-day” had more GHY. “Sugar-graze” had more DM yield and it was determined more digestible forage. It was inferred that the best yield components and nutritive profiles were obtained in N2 rate.
Keywords : Fertilizing, Sorghum, Yield, Quality