Two field experiments were carried out at the Experimental Research Center, Faculty of Agriculture, Moshtohor, Benha University, Kalubia Governorate during two growing seasons (2010/2011 and 2011/2012) to investigate the potentialities of five Berseem (Trifolium alexandrinum, L.) varieties (Gemaiza 1, Sakha 4, Helali, Giza 6 and Serw 1) fertilized with various phosphorus fertilization levels (0, 22.5 and 45 kg P2O5/fed). Experiments were designed and implemented to evaluate their chemical composition behavior of the studied varieties during 2nd and 4th cuts.
Experiments were designed and layed out in a split plot design where phosphorus fertilization levels were randomly distributed in the main plots and Berseem varieties in the split plots. It should be pointed out that chemical analysis was conducted for the second and four cuts of each of the two growing seasons for different variety of seasons. Combined analysis of the two season was done after insuring the validity of partlet test (Steel and Torrie, 1981).Results could be concluded as follows:
Over the applied phosphorus fertilization levels, results of the combined analysis indicate significant differences in CP, CF, Ash, EE, NFE, TDN and DP % among the studied Berseem varieties during two cuts. The highest content of CP, DP and CF% were for Gemaiza 1 whereas, Helali variety was the highest content of Ash and EE% with significant differences of different magnitudes.therefor, the highest TDN and NFE contents were for Giza 6.
Over the grown Berseem varieties, data clarified that CP, CF, Ash, EE, and DP % were substantially increased as phosphorus fertilization levels increased from 0 to 22.5 and up to 45 kg P2O5 /fed, respectively. Opposite results were observed with NFE and TDN.
|
