Shaban, Kh. A. ; A. A. Khalil And Amira A. Mohamed( 2013). Effect of sowing date and nitrogen, potassium fertilization on faba bean productivity in newly reclaimed saline soil of north SinaiJ. Soil Sci. And Agric. Eng., Mansoura Univ., Vol. 4 (9): 893 - 904
Abstract: Faba bean (Cv. Nubaria 1) was grown during the two winter seasons 2011/2012 and 2012/2013 in saline soil at North Sinai Governorate, Egypt, to study of the effect of potassium sulfate (48 % K2O) rates ( 50 – 75 and 100 kg K2O fed-1) , urea (46 % N) rates (10 – 20 -40 kg N fed-1) alone or in combination with bio-fertilizers (Bacillus circulans potassium solubilizing bacteria) + Rhizobium radiobacter nitrogen fixing bacteria strain inoculation, Salt Tolerant PGPR and sowing dates (25 October, 25 November and 25 December ) on faba bean productivity and the nutrients content in faba bean grains under saline soil conditions was conducted:
Results showed that the greatest seeds yield was obtained with the rate of 40 kg N +100 kg K2O fed-1 combined with bio-fertilizer and sown on date in 15 November in both seasons. Also, the rates of N, K and sowing date significantly increased P, K, Fe Mn and Zn content in faba bean seed in both seasons, while grain N content showed no significant differences in the first season. Soil contents of N, K, Mn and Zn after harvest were significantly affected by N, K and sowing date while the available P and Fe showed not significant differences in the first season. Sowing date (25 November) recorded the highest values of seeds protein content. It could be recommended that use of 20 kg N + 75 kg K2O fed-1 combined with bio-fertilizers and sowing date of 25 November gave the greatest seed yield and improved nutrients content in grains under saline soil conditions
Keywords: (saline soil, faba bean, bio-fertilizers and sowing dates)
