Effect of integrated management of chemical fertilizers and nano-nutrients on bread wheat growth different tillage systems

• Shaymaa Salah Al-Kawaz1 and Safaa Abd Al-Hassan Al-Zubaidy2

  Author

   A field experiment was conducted in fields belonging to the Field Crops Department - College of Agriculture , Al-Qasim Green University during the growing season (2025-2026) with the aim of evaluating the effect of combinations of chemical and nano fertilizers on the growth of wheat (Triticum aestivum L.) under different tillage systems. A randomized complete block design (RCBD) with a split-plot arrangement was used. The main factor included three tillage systems (no-till treatment T0, conventional tillage treatment T1, and surface tillage treatment T2) and four combinations of chemical and nano-fertilizers (100% chemical fertilizer, 75% chemical fertilizer + nano-fertilizer, 50% chemical fertilizer + nano-fertilizer, and 25% chemical fertilizer + nano-fertilizer), designated as F1, F2, F3, and F4, with three replicates. The results showed the surface tillage treatment excelled in most growth traits, giving the highest average flag leaf area (49.73 cm²), chlorophyll SPAD content (47.15), and number of tillers (5.092 tillers). The 75% chemical fertilizer + nano-fertilizer combination resulted in the highest average plant height (104.80 cm), flag leaf area (50.67 cm²), and number of tillers (4,822). The interaction between tillage systems and fertilizer combinations had a significant effect, with surface tillage combined with the 75% chemical fertilizer + nano-fertilizer combination achieving the highest averages for most growth traits.

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