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Effect of different levels of nitrogen and farmyard manure on yield and quality of spinach (Spinacea oleracea L.)
Authors:B D Kansal  B Singh  K L Bajaj  G Kaur
Institution:(1) Department of Soils, Punjab Agricultural University, 141 004 Ludhiana, India;(2) Department of Vegetable Crops, Landscaping and Floriculture, Punjab Agricultural University, 141 004 Ludhiana, India
Abstract:The effect of different levels of nitrogen N0(0kg/ha), N1(30 kg/ha), N2 (60 kg/ha), and N3 (90 kg/ha) and farmyard manure F0 (0 tonnes/ha), F1 (10 tonnes/ha), and F2 (20 tonnes/ha) on the yield and nutrient composition of spinach and its uptake was investigated on a sandy loam soil. Yield; phosphorus, iron, manganese, zinc, and copper uptakes; and ascorbic acid content increased with the application of both the inorganic nitrogen fertilizer and the farmyard manure, with a maximum at the N3F2 level, i.e. at 90 kg N/ha with 20 tonnes FYM/ha. However, the contents of protein, beta-carotene, and reducing sugars were maximum at the highest dose of nitrogen without the application of farmyard manure.
Keywords:farmyard manure  nitrogen levels  Spinacea oleracea L    spinach quality  spinach yield
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