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Influence of Zeolite Application on Nitrogen Efficiency and Loss in Canola Production under Sandy Soils Conditions
- Gholamhoseini, Majid, AghaAlikhani, Majid, Malakouti, Mohammad Jafar, Joghan, Aydin Khodaei
- Communications in soil science and plant analysis 2012 v.43 no.9 pp. 1247-1262
- canola, field experimentation, growing season, leaching, nitrogen, sandy soils, seed yield, semiarid zones, zeolites
- A field experiment was carried out in a semi-arid region of Iran during the 2006–2007 growing season to investigate canola seed yield as affected by nitrogen (N) and natural zeolite (Z) rates. This experiment studied N efficiency and N leaching loss in a sandy soil. Experimental treatments consisted of a factorial combination of three N levels (90, 180, and 270 kg N ha⁻¹) and four zeolite rates (0, 3, 6, and 9 t zeolite ha⁻¹). The result showed that the greatest seed yield (2452.3 kg ha⁻¹) was obtained from the N₂₇₀Z₉ treatment whereas the control treatment (N₀Z₀) produced the lowest seed yield (1038.3 kg ha⁻¹). Moreover, use of 270 kg N ha⁻¹ without zeolite (N₂₇₀Z₀) led to the greatest amount of N leaching loss (144.23 kg ha⁻¹). Zeolite application clearly reduced N leaching loss in all N rates. This justified low N-use efficiency in high N applications. More N uptake and more canola seed yield is attributed to zeolite application.