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May 17, 20260 citationsOpen Access

Influence of Organic and Inorganic Fertilizer Applications on Sunflower Performance in Derived Savannah Agro-Ecology

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COC P Okafor

Key Points

  • The aim is to determine the effects of poultry manure and NPK 20:10:10 on sunflower growth and seed yield.
  • Conducted a field experiment with a 4 × 4 factorial design in randomized complete blocks with three replications.
  • Applied varying rates of poultry manure (0, 5, 10, and 15 t ha−1) and NPK 20:10:10 (0, 100, 200, and 300 kg ha−1).
  • Measured plant growth parameters including height, stem girth, leaves, flowering days, and seed weight.
  • Poultry manure at 15 t ha−1 resulted in significantly higher seed yield compared to lower rates (p < 0.05).
  • NPK 20:10:10 at 300 kg ha−1 produced the highest seed yield across all treatments.
  • Combining poultry manure at 15 t ha−1 with NPK at 300 kg ha−1 optimized growth and production metrics.

Abstract

A field experiment was conducted at the Department of Crop Science Teaching however, applying them at 15 t ha−1 and 300 kg ha−1, respectively gave the highest values for all parameters. Therefore, they should be combined at these rates, otherwise sole application of either poultry manure at 15 t ha−1 or NPK 20:10:10 at 300 kg ha−1 is recommended for optimum growth and production of sunflower in the derived savannah ecological zone.

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Cite This Study

C P Okafor (2026) studied this question.

synapsesocial.com/papers/6a095c037880e6d24efe1fd8https://doi.org/10.5281/zenodo.20209166
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