Impact of Bio-Chemical Phosphorus Fertilization and Lithovit Regimes on Some Qualitative Traits of Various Berseem Varieties

Abstract

Governorate, Egypt, during the winter seasons of 2019/2020 and 2020/2021. The investigation aimed at studying the impact of ten bio-chemical phosphorus fertilization and lithovit regimes on some qualitative traits of forage for 1 st and 3 rd cuts of six Egyptian clover varieties (Berseem, Trifolium alexandrinum L.) q.e. Helaly, Sakha 4, Gemmeiza 1, Giza 6, Serw 1, and local variety. The ten bio-chemical phosphorus fertilization and lithovit regimes were F 1 , control; F 2 , chemical phosphorus, 15.5 Kg P 2 O 5 /fad., F 3 , bio-phosphorus fertilizer "Phosphorien"; F 4 , 50% of F 2 + phosphorien; F 5 , 25% of F 2 + phosphorien; F 6 , F 2 + lithovit; F 7 , F 3 + lithovit; F 8 , F 4 + lithovit; F 9 , F 5 + lithovit; F 10 , sole lithovit. Results disclosed varietal differences in each of phosphorus content (P%), digestible energy (DE Kcal/g dry matter), protein yield (Kg/fad.), as well as carbohydrate and fiber yields (Kg/fad.) in both the 1 st and the 3 rd cuts. The ten bio-chemical phosphorus fertilization and lithovit regimes resulted in a significant impact on the above cited traits in both the 1 st and the 3 rd cuts.