Summary
This field trial in Rawalakot, Pakistan evaluated the comparative effects of organic amendments (farmyard manure and poultry manure) and inorganic nitrogen (urea) on strawberry cv. Chandler growth and nutritional quality. Combined organic treatments, particularly farmyard manure equivalent to 75 kg N/ha plus poultry manure equivalent to 75 kg N/ha, significantly enhanced plant survival (41% above control), yield, and multiple markers of nutritional quality including total phenols, flavonoids, and antioxidant activity, suggesting potential for optimising fertiliser protocols in temperate horticultural regions.
UK applicability
The findings on combined organic-inorganic fertiliser regimes are relevant to UK strawberry production, particularly for producers seeking to balance yield and nutritional quality. However, direct application requires validation under UK temperate growing conditions, soil types, and cultivar performance, as the study was conducted in a subtropical highland environment (Rawalakot) with potentially different edaphic and climatic constraints.
Key measures
Survival percentage, number of leaves, number of flowers, number of fruits, yield, total soluble solids (°Brix), titratable acidity (%), ash (%), fibre (%), total phenols (μg gallic acid/g fresh weight), total flavonoids (mmol quercetin/100 g fresh weight), total antioxidants (FeSO₄ activity mg/g fresh weight)
Outcomes reported
The study compared growth patterns, yield, and postharvest nutritional quality of strawberry cv. Chandler under different fertiliser regimes combining farmyard manure, poultry manure, and inorganic urea. Key measurements included plant survival, leaf and flower production, fruit yield, and antioxidant capacity (total phenols, flavonoids, and antioxidant activity).
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