Safa B. A.AL-Aboudy(1), and Sundus A. Alabdulla(1)*
(1).Field Crops Department, Agriculture College, Basrah University,Iraq.
(*Corresponding author, Sundus A. Alabdulla sundus.mohammed@uobasrah.edu.iq)
Received: 22/11/2021 Accepted: 4/02/ 2022
Abstract:
The study was conducted in Agriculture College farm / Basra University (Karmat Ali), during autumnal season / 2020, to study the effects of Nitrogen fertilizer levels (0, 150, 200 and 250 kg N ha-1), and three split application of nitrogen fertilizer which is: (¼ after two weeks of sowing, + ½ after the first cut + ¼ after the second cut , ½ after two weeks of sowing + ¼ after the first cut + ¼ after the second cut, ⅓ after two weeks of sowing, + ⅓ after the first cut + ⅓ after the second cut), on N,P,K concentration ,green forage yield and quality of the hybrid of Sudangrass. The results showed that the level 200 kg N ha-1 was superior and gave the highest green forage yield of 66.196, 82.407 and 20,533 μg ha-1,for the three cuts respectively.The second split application of nitrogen fertilizer achieved the highest green forage yield in the first and second cuts were 57.382 and 71,855 μg ha-1. The interaction of 200 kg N ha-1 with The second split application gave the highest green forage yield at the first cutting while, at the second cutting the level of 200 kg N ha-1 with The second split application gave the highest average green forage yield .
Keywords: Sudangrass, Nitrogen fertilizer, Splitting, Forage yield, Protein.
Full paper in Arabic: pdf