Effect of Sowing Date and Nitrogen, Potassium Fertilization on Faba Bean Productivity in Newly Reclaimed Saline Soil of North Sinai

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 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 biofertilizers and sowing date of 25 November gave the greatest seed yield and improved nutrients content in grains under saline soil conditions Keyword: saline soil, faba bean, bio-fertilizers and sowing dates.

Effect of Urea and Potassium Sulfate Fertilizers Combined with Boron on Soil Fertility and Sugar Beet Productivity in Salt Affected Soil

“…This may be attributed to the beneficial and mutual affect applied nutrients on its availability in soil consequently, enhance its uptake and concentration in plant roots. These results are in agreement with thoses of Seadh et al (2007) Salem and Khaled, (2012) and Shaban et al (2013) who found that the different combination levels between potassium sulfate and nitrogen increased significantly the concentration of nitrogen, potassium and phosphorus in sugar beat root in two seasons of study. Also, Mehran and Samad (2013) showed that increasing N and K fertilization had a significant effect on nutrients content and uptake of roots and foliage over two seasons of study.…”

“…These finding indicate either that more N+ K 2 O applications, the more available nutrients increases, since the highest increase was noticed at the highest rates and these increments were enhanced with boron or to decline the pH that augment the availability of nutrients in the soil. Similar results were obtained by Shaban et al (2013) who found that the rates of N + K were significantly affected soil contents of K, while the P was not significantly affected. Helmy and Shaban (2007) indicates that the applied K fertilizer as well as foliar application with B increased the available N, P and K contents in soil as compared to the control.…”

Effect of Sowing Date, Fertilizers and Broomrape Control Treatments on Faba Bean (Vicia Faba L.) Productivity.

“…The results also indicated that there are no significant differences between mineral and organic fertilizer. Similar results were reported by Shaban et al (2013).…”

“…These results may be due to the favorable environmental conditions to germination of faba bean seeds and long growing season for the early sowing. Similar results were reported by Turk and Tawaha (2002), Khalil et al (2011), Kawochar et al (2011) and Shaban et al (2013)…”