Interaction Effect of Rice Biochar and Phosphorous Fertilizer on Growth, Yield and Yield Component of Faba Bean (Vicia faba L)

Abstract

This research was conducted during the growing season 2022 - 2023 at Grdarsha field, College of Agricultural Engineering Sciences, Salahaddin University, Erbil with GPS reading of (36.10116 ◦N, longitude 44.00925◦ E and elevation of 415.8) meters above sea level The factorial experiment was done to study the influence of five levels of rice biochar (B0, B0.5, B1, B1.5 and B2) which equivalent to (0, 5, 10, 15 and 20) t ha-1, two levels of phosphorus (P0 and P1) which equivalent to (0 and 240) kg TSP ha-1 and their interactions on growth and yield of faba bean using randomized complete block design with three replications. The results indicated to the significant effect of both factors and their interactions on the studied growth traits and yield. The highest yield values (20.00, 18.59 and 23.67) t ha-1 were recorded from B1.5, P1 and B2P1 or from application of 15 t ha-1 rice biochar, 240 kg TSP ha-1 and their combination respectively. While the lowest values of them (13.3015.13 and 11.60) t ha-1 were obtained from control treatments (B0, P0 and B0P0) respectively. The significant correlation coefficient was recorded between yield and each of chlorophyll content, pod length and number of seeds per pod with the correlation coefficient values of (r =0.91**, r =0.98** and r = 0.90 **) respectively.