Effect of furrow spacing and phosphorus fertilization treatments on faba bean yield, nutrients content and some water relationships [electronic resources].

Includes references.

Two field trials were carried out at Sakha Agric. Res. St. farm during two successive winter seasons of 2007/2008 and 2008/2009, to assess the effect of planting methods and phosphorus fertilization treatments on faba bean yield, nutrient contents and some water relationships. Faba bean (Vicia faba L.) seeds var. Sakha 2 were planted on November in both seasons. Split plot design was used with four replicates. The main plots were assigned by two planting methods i.e. A: 120 cm furrow spacing with 4 planting rows per furrow and B:60 cm furrow spacing with 2 planting rows per furrow. The sub plots were assigned by four phosphorus treatments .e.1- application of 30 kg P20s fea⁻¹ ( ha = 2.4 fed.) as superphosphate 15.5% P₂O₅ (P₂O₅ = 2.29 x P ) , 2- completing the soil available phosphorus up to 30 kg P₂O₅ fed⁻¹ by superphosphate, 3- application of 15 kg P₂O₅ fed⁻¹ in addition to inoculating faba bean seeds with phosphate dissolving bacteria and 4-application of 15 kg P₂O₅ + inoculation with phosphate dissolving bacteria + spraying with cyanobacteria extraction. The obtained results were summarized as follows: • Planting methods high significantly affected seed yield in both seasons, the higher mean values of 1653.17 and 1766.75 kg fed⁻¹ were obtained with 60 cm furrow spacing in the first and second seasons, respectively. • Planting method of 60 cm furrow spacing had the higher mean values of biomass (6722.5 and 7161.4 kg fed⁻¹), higher 100 seed weight (99.04 and 101.56 g) and the higher N content mean values (56.0 and 61.4 kg fed⁻¹). • Planting method of 120 cm furrow spacing had the higher protein % mean value in the second season (22.34%), the higher seed P% mean values (0.55 and 0.56%) and the higher seed P content values of 6.87 and 7.39 kg fed⁻¹ in the first and second seasons, respectively. • Treatment of 15 kg P₂O₅ + inoculation with phosphate dissolving bacteria had the highest seed yield, biomass yield, seed N%, N content of the seeds, protein % and P%. • Treatment of 30 kg P₂O₅ fed⁻¹had the highest 100 seeds weight values and the highest residual available P values in the soil after faba bean harvesting. • Planting method of 60 cm furrow spacing had the higher water applied mean values (1596 and 1586 m³ fed⁻¹) and the higher water consumptive use mean values of 1380 and 1359 m³ fed⁻¹, while, 120 cm furrow spacing had the lower water applied mean values (1314 and 1285 m³ fed⁻¹) and the lower water consumptive use mean values of 1113 and 1069 m³ fed⁻¹ in the first and second season, respectively. • The higher values of water productivity (WP) and productivity of irrigation water (PIW) were 1.24 and 1.30 kg m⁻³ and 1.04 and 1.11 kg of seeds m⁻³ were obtained from 60 cm furrow spacing in the 1st and the 2nd season, respectively.

Summary in Arabic.

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