STRENGTHENING SEED POTATO AGRONOMY THROUGH ORGANIC AND PHOSPHORUS NUTRITION BASED INTERVENTIONS
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Authors
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Dr Aman
Assistant Professor, KVK, Fatehgarh Sahib-PAU Ludhiana
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C S Aulakh
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A S Sidhu
Keywords:
Seed potato, Farmyard manure, Phosphorus, Biofertilizer, FertilizerAbstract
Punjab contributes significantly to India’s seed potato supply, yet its potato productivity
remains below expectations. Poor nutrient management, particularly phosphorus, is a key factor in
this underperformance. This study, conducted over two years in Ludhiana and Jalandhar, utilized
a split-plot design to test three organic treatments (farmyard manure, biofertilizer, control) and five
phosphorus fertilizer levels (46.9, 62.5, 93.8, 125, 0 kg ha-1 P2O5). Farmyard manure (FYM) significantly
increased plant height, LAI, and tuber and haulm weights at 45 and 75 days after sowing (DAS)
compared to other organic treatments. FYM consistently outperformed tuber yield compared to other
treatments in both locations and years. Phosphorus application at 125 kg ha-1 P2O5 enhanced tuber
yield by up to 24% compared to unfertilized plots, with improvements in plant growth attributes.
The highest tuber yields were achieved with FYM (50 t ha-1) and phosphorus levels up to 125 kg
ha-1 P2O5)., underscoring the effectiveness of these strategies in optimizing seed potato production.
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