Long-Term Nutrient Supply Options: Strategies to Improve Soil Phosphorus Availability in the Rice-Wheat System

Dwivedi

Front. Sustain. Food Syst.

et al. 2022

Self Cite

In the last few decades, the deficiency of sulfur (S) has been noticed in the agricultural soils of India. Meanwhile, researchers reported that S plays a significant role in the productivity of the rice-wheat cropping system (RWCS). For the quantification of S response, a long-term field experiment was started at the Indian Council of Agricultural Research-Indian Institute of Farming Systems Research (ICAR-IIFSR), Modipuram, India. In total, 7 nutrient supply options were applied, i.e., organic, mineral fertilizer in the combination of integrated plant nutrition system (IPNS), and IPNS + berseem (B)/IPNS + cowpea (C) in the S availability of the soil in the RWCS. The results showed that the highest contribution in S availability by the total S (39%) is followed by the organic S (35%), sodium bicarbonate extractable sulfur (NaHCO3-ES; 7%), heat-soluble sulfur (SS; 7%), water-soluble sulfur (WSS; 4%), available S (4%), and inorganic S (4%) under different long-term nutrient supply options of RWCS. The continuous application of organic fertilizer and various IPNS options, such as the inclusion of pulses, significantly improved all S fractions in the soil and also offers an additional benefit in terms of sustainability of production and soil health as compared to the inorganic fertilizer fields. Overall, the results showed that IPNS showed its superiority over the rest of the treatment. The results also supported that the inclusion of pulses gives a further gain in terms of sulfur availability in soil systems under RWCS.

Section: Treatments and Experimental Designmentioning

confidence: 99%

Long-term nutrient management in an intensive rice-wheat cropping system improves the quantities, qualities, and availability of soil sulfur

Dwivedi

Front. Sustain. Food Syst.

et al. 2022

Self Cite

“…The selected field experiment site of ICAR-IIFSR (https://iifsr.icar.gov.in/icar-iifsr/ accessed on 1 September 2022) Modipuram Meerut (India) for this study, and initial soil characteristics and climatic conditions were presented in [27].…”

Section: Study Area and Site Characteristicsmentioning

confidence: 99%

“…The long-term rice-wheat production system trial was established in 1998 [27] in randomized block design (RBD) with four replications. The long-term cropping system experiment at an involving different nutrient supply options under rice-wheat rotation.…”

Section: Experimental Design and Nutrient Managementmentioning

confidence: 99%

Effect of Nutrient Management on Soil Carbon Quantities, Qualities, and Stock under Rice-Wheat Production System

et al. 2022

Self Cite

The nutrient management options have been contemplated to be sustainable strategies to sustain rice-wheat production systems and a conceivable option to maintain soil organic carbon (SOC) in soil systems. We hypothesized that carbon fraction could be a critical factor in improving carbon storage in cereal-based production systems. The results suggested that the adoption of IPNS legumes (berseem and cowpea), STCR, and OF improved SOC concentrations. It was observed that significantly higher (57%) contribution in carbon concentration very labile carbon (VLC) was trailed by the non-labile carbon (NLC, 23%), labile carbon (LC, 12%), and less labile carbon (LLC 8%) in the surface soil layer. Results showed that carbon stock varied from 11.73 to 18.39 and 9.95 to 11.75 t ha−1 in the surface and subsurface soil depths, respectively, and significantly higher carbon stock was maintained in OF in both soil depths over the other nutrient management practices. Results showed that for the surface layer C-stocks registered in the following order (0–15 cm soil depth) OF (18.39 t ha−1) > IPNS + C (17.54 t ha−1) > IPNS + B (17.26 t ha−1) > IPNS (16.86 t ha−1) > STCR (15.54 t ha−1) > NPK (15.32 t ha−1) and unfertilized control (11.73 t ha−1). Overall, results suggested that the adoption of IPNS options addition of legumes significantly enhanced all carbon pools.

“…Wastewater and sludge, which are now recognised as valuable sources of nutrients like phosphorus and ammonium, contain massive volumes of both organic and inorganic compounds (Meena et al, 2022). The world's population is increasing, which means that more food needs to be produced.…”

Section: Introductionmentioning

confidence: 99%

Wastewater and sludge valorisation: a novel approach for treatment and resource recovery to achieve circular economy concept

et al. 2023

Global demand for freshwater is rapidly escalating. It is highly essential to keep pace with the necessities of the increasing population. The effluents of wastewater are gradually identified as a reservoir of resources for energy generation and economic boom. Henceforth, most wastewater and sludge have great potential for reuse and recycling. The re-utilization and valorization of wastewater and sludge contribute to accomplishing sustainable development goals, combating water scarcity, and alleviating adverse environmental impacts of wastewater on the environmental components. The present article highlights the most novel approaches for wastewater treatment for the waste valorization of different industrial origins and the generation of value-added products and recovery of biopolymers, vitamins, enzymes, dyes, pigments, and phenolic compounds. We highlighted the life cycle assessment and techno-economic analysis. In addition, we have addressed a critical overview of the barriers to the large-scale application of resource recovery strategies and economic, environmental, and social concerns associated with using waste-derived products.