A study was conducted during two seasons, Rabi 2022-23 and 2023-24, on the farm of Lovely Professional University in Jalandhar, Punjab, focusing on the “leaf area index, quality, and nutrient uptake in wheat (Triticum aestivum L.) affected by different planting patterns and nitrogen levels.” The experiment was set up in a split-plot design (SPD) with three planting techniques: two rows per bed, bidirectional sowing, and line sowing in the main plots, and five nitrogen levels: 0, 40, 80, 120, and 160 Kg N/ha. The findings concluded that among the main plots, significantly greater leaf area index, chlorophyll index, protein content (7.61%, 9.46%), and nitrogen content by grains (1.21%, 1.51%) and straw (0.63%, 0.66%) were obtained in the two rows per bed technique compared to bidirectional and line techniques. Additionally, there was an increased nitrogen uptake by grains and straw, significantly higher (39.98%, 33.97%, and 65.35%, 62.42%, respectively) in two rows per bed and (15.40%, 12.85%, and 24.53%, 21.46%, respectively) in bidirectional sowing during both years compared to flat sowing technique. Among the nitrogen level treatments, chlorophyll index (46.81 and 43.54), protein content (9.79% and 11.61%), nitrogen content (1.32%, 1.62% and 0.73%, 0.76%), and uptake (85.72 Kg/ha, 99.52 Kg/ha, and 47.80 Kg/ha, 48.96 Kg/ha) in grains and straw were significantly higher in the 160 Kg N/ha treatment compared to 0, 40, 80, and 120 Kg/ha.
Key words: Chlorophyll index. Leaf area index. Planting patterns. Protein. Uptake. Wheat.
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