Effect of integrated nutrient sources on agronomic performance of onion (Onion cepa L) and soil properties

A field experiment was conducted to study the effect of integrated nutrient management in onion for two years at Krishi Vigyan Kendra, Jalandhar. The different combinations of farmyard manure, vermicompost and poultry manure along with inorganic fertilizers were used to evaluate the performance of onion. The maximum plant height, number of leaves, neck thickness, bulb weight and fresh bulb yield was in treatment with Farmyard manure @ 20 tones + Vermicompost @ 5 tones + Poultry manure @ 2 tones +100% of recommended NPK was applied followed by farmyard manure @50 tones +100% recommended NPK (37.5t ha⁻¹) and Poultry manure @ 7.5 tones + Biofertilizer + 75% of recommended NPK (35.7 t ha⁻¹). This study concluded that the integrated application of manures and chemical fertilizers is a must forimproving soil nutrient status and nutrient use efficiency and ultimately enhances nutritional security.