What does this research mean for the field?

The combined or sole application of 15 t ha−1 poultry manure and 300 kg ha−1 NPK 20:10:10 fertilizer optimizes the growth and seed yield of sunflowers in the derived savannah ecological zone. Novelty: ClaimNovelty.INCREMENTAL. Consensus alignment: ConsensusAlignment.NEUTRAL.

What question did this study set out to answer?

The aim is to determine the effects of poultry manure and NPK 20:10:10 on sunflower growth and seed yield.

May 17, 2026Open Access

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

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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