Changes of the Growth Rate of Wheat and Canola with Soil Amendments Application in Crop Rotation.

Integrated nutrient management in crop rotation conditions (Canola-Soybean-Wheat) is important for farm management. Four years of field experiments were conducted to assess the effects of organic and inorganic soil fertility amendments on crop growth and soil physiochemical properties during 2014–2018. The experiments were carried out based on a randomized complete block design, with the split-plot arrangement of treatments and three replications. Two crop rotations (Canola-Soybean-Wheat; Canola-Wheat) were randomized to the main plot units and nine fertilization management (F₁: urea, F₂: urea + zeolite, F₃: composted manure, F₄: composted manure + zeolite, F₅: urea + composted manure, F₆: urea + composted manure + zeolite, F₇: urea + azocompost, F₈: urea + azocompost + zeolite and F₉: control) were randomized to the sub-plots. The maximum dry matter and the growth rate at linear phase were estimated in F₆ fertilizer treatment for canola (665.05 g m⁻² and 6.67 g m⁻² d⁻¹) and wheat (716 g m⁻² and 7.19 g m⁻² d⁻¹), respectively. The maximum soil organic carbon (SOC) was observed in the second year of the experiment by the integrated fertilizing management (F₆ = 1.26%) while the lowest SOC was observed in control (F₉ = 0.65%). Application of zeolite in all of the experimental treatments resulted in higher soil cation exchange capacity (CEC). The maximum soil K (115.23 ppm), P (113.73 ppm), Zn (10.07 ppm) and Mn (12.35 ppm) were observed in organic treatments incorporated with zeolite (F₄). Our study found that application of organic amendments such as azocompost and manure composts incorporated with chemical fertilizer and zeolite can be recommended to improve soil fertility and growth properties of wheat and canola crops. [ABSTRACT FROM AUTHOR]