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The experiment was carried out during 2009-10 and 2010-11 rabi seasons to find out the effect of irrigation and phosphorus doses on growth, yield and water extraction of broad bean. Crop irrigated at Y = -0.03 MPa at 30 cm soil depth showed 5.33% and 34.97% higher seed yield compared to ψ = -0.05 MPa at 30 cm soil depth and rainfed, respectively and was significantly superior. Treatment receiving 75 kg P2O5/ha was significantly superior with 5.33 t/ha seed yield which was 8.33% and 28.74% higher over 50 kg P2O5/ha and 25 kg P2O5/ha, respectively. Growth and yield attributing characters also followed the trend of seed yield. Irrigation applied at Y = -0.03 MPa at 30 cm soil depth markedly enhanced nodule number, net return (Rs. 32200.98 / ha) and benefit cost ratio (2.32) over other irrigation treatments. Among different P levels the highest nodule number, net return (Rs. 36834.22 / ha) and benefit cost ratio (1.32) were recorded with the application of 75 kg P2O5/ha. The study revealed that, Soil moisture extraction by the crop increased with the advancement of crop growing period and again it decreased till harvest. Moisture extraction rate increased with the increase in moisture status of the soil. [ABSTRACT FROM AUTHOR]

The objective of this research was to investigate different levels and the combined effect of nitrogen and phosphorus on the nodulation and yield components of faba bean (Vicia faba L.). A large seeded 584-066 accession numbered faba bean line, which was taken from a breeding program of the Field Crops Department, was used in the experiment. Four different nitrogen (0, 30, 60, 90 kg/ha) and three phosphorus (0, 40, 80 kg/ha) levels were applied to the soil at the sowing time. The number of pods/plant, biological and grain yield per unit area, together with grain and plant N content, were increased by 60 kg/ha nitrogen combined with 40 kg/ha phosphorus applications. The highest nodule and nodule weight/plant and 100-kernel weight were obtained from 80 kg/ha phosphorus and 30 kg/ha nitrogen combination. [ABSTRACT FROM AUTHOR]

Aerodynamic properties of agricultural materials are the physical properties considering the reaction of agricultural material piles or seeds against airflow. The airflow resistance of faba bean (Vicia faba L.) seed piles was experimentally determined and mathematically modeled for two different moisture contents (11.4 % and 25.8% w.b.) for the superficial air velocities ranging from 0.0225 to 1.395 m3∙m-2∙s-1. Modified Shedd's equation and Hukill-Ives equation can be interchangeably used to design aeration systems for the storage and drying bins of faba bean seeds. The terminal velocity values are 11.68 and 12.87 m∙s-1 for the moisture contents of 11.4% and 25.8% (w.b.), respectively. The drag coefficient values are 1.02 and 0.88 for the moisture contents of 11.4% and 25.8% (w.b.), respectively. Moisture content increased terminal velocity but decreased drag coefficient. [ABSTRACT FROM AUTHOR]