Restoring soil fertility in farming systems is essential to sustain a crop and its productivity. Thus, the present study was conducted to assess the residual effects of the combined application of fertilizers and manures on yield, concentration and uptake of nutrients in wheat under basmati rice-wheat cropping system. The treatments applied in the present study involve T1: control, T2: farmyard manure (15 t ha⁻¹), T3: poultry manure (6 t ha⁻¹), T4: press mud (15 t ha⁻¹), T5: rice straw compost (6 t ha⁻¹), T6: farmyard manure (15 t ha⁻¹) + 50% recommended dose of nitrogen (RDN), T7: poultry manure (6 t ha⁻¹) + 50% RDN, T8: press mud (15 t ha⁻¹) + 50% RDN, T9: rice straw compost (6 t ha⁻¹) + 50% RDN, T10: 75% RDN, T11: farmyard manure (15 t ha¹) + 75% RDN, T12: poultry manure (6 t ha⁻¹) + 75% RDN, T13: press mud (15 t ha⁻¹) + 75% RDN, T14: rice straw compost (6 t ha⁻¹) + 75% RDN, T15: 100% RDN. The residual effects of organic manures significantly improved the growth parameters and yield attributes. Among different residual treatments, the use of farmyard manure + 75% NPK showed maximum plant height (125.2 cm), number of tillers (68.0 m⁻¹), chlorophyll content (45.0) and yield (50.84 q ha⁻¹ for grain and 80.43 q ha⁻¹ for straw, respectively). Additionally, the incorporation of farmyard manure + 75% RDN demonstrated the highest uptake of nitrogen, phosphorus and potassium in grain (7.37, 3.31 and 4.93 g ha⁻¹, respectively) and straw (1.72, 1.05 and 12.63 g ha⁻¹, respectively). The maximum zinc, copper, iron and manganese concentrations were observed to be 32.0, 3.1, 52.1 and 17.6 mg kg⁻¹ in grain and 8.2, 2.1, 374.6 and 20.5 mg kg⁻¹ in straw, respectively. Similarly, the highest uptakes were observed to be 67.6, 15.5, 263.8 and 89.6 g ha⁻¹ in grain and 173.3, 16.8, 3026.9 and 170.6 g ha⁻¹ in straw, respectively. Thus, the integrated application of farmyard manure with 75% RDN could be used to sustain wheat productivity and maintain soil fertility which otherwise deteriorates due to the sole application of inorganic fertilizers.

Our study from an ongoing research experiment initiated in Rabi 1967 at the Research Farm of CCS Haryana Agricultural University, Haryana, India, reports that during the 51st wheat cycle in pearl millet-wheat sequence, adding FYM in both seasons significantly impacted various soil parameters at different wheat growth stages compared to the rabi season. The application of 15 t of FYM ha⁻¹ resulted in a considerable increase in dissolved organic carbon content (9.1–11.2%), available P (9.7–12.1%), and available S (12.6–17.1%), DHA levels by 7.3–22.0%, urease activity (10.1 and 17.0%), β-Glucosidase activity (6.2–8.4%), and APA activity (5.2–10.6%), compared to 10 t FYM ha⁻¹. Application of N₁₂₀ exhibited a considerable improvement in DHA (11.0–23.2%), β-Glucosidase (9.4–19.2%), urease (13.3–28.3%), and APA (3.3–6.2%) activity compared to control (N₀). At stage 3, the box plot revealed that 50% of the available N, P, and S values varied from 223.1 to 287.9 kg ha⁻¹, 53.0 to 98.2 kg ha⁻¹, and 50.0 to 97.6 kg ha⁻¹, respectively. Principal component analysis, with PC1 explaining 94.7% and PC2 explaining 3.15% of the overall variability, and SOC had a polynomial relationship with soil characteristics (R² = 0.89 to 0.99). Applying FYM₁₅ × N₁₂₀ treatment during both seasons proved beneficial in sustaining the health of sandy loam soil in North-West India.

Micronutrients play a vital role in improving growth and performance of different crops. Management of soil micronutrients for better crop production needs sound understanding of their status and causes of variability. Therefore, in order to evaluate the changes in soil properties and micronutrient contents of soils, an experiment was conducted with soil samples from six soil depths i.e. 0-10, 10-20, 20-40,40-60, 60-80 and 80-100 cm of four prominent land-use systems viz. forest, horticulture, crop land and barren land. Amongst these, the maximum contents of OC (0.36%), clay (19.4%), DTPA-Zn (1.14 mg kg^-1), Fe (11.78 mg kg^-1), Mn (5.37 mg kg^-1), Cu (0.85 mg kg^-1) and Ni (1.44 mg kg^_1) were observed in soils of forest land use system followed by horticulture, crop land and barren land, respectively. Also, soils of forest landpossessed 29.5, 21.3, 58.4, 51.8 and 44.0% higher DTPA-Zn, Fe, Mn, Cu and Ni as compared to crop land use system. Interactive influence of land use systems and soil depths on distribution of DTPA extractable micronutrients was found to be positive with maximum content at 0-10 cm depth of forest land use and lowest at 80-100 cm of barren land use system, respectively. Correlation analysis explicit positive and significant relationship of OC with DTPA Zn (r = 0.81), Fe (r = 0.79), Mn (r = 0.77), Cu (r = 0.84) andNi (r = 0.80), whereas the correlation results among DTPA micronutrients indicated the highest positivecorrelation of Ni with Cu (r = 0.95) and Mn (r = 0.93) followed by Fe with Zn (r = 0.93). Therefore, inclusion of forest and horticulture land use in crop lands or shift of land use from forest based to crop land resulted in renewal of degraded soil which could be beneficial for enhancing agricultural sustainability.