Kinetics of Cooxidation of 1,2-Glycols & Esters by Periodate in Basic Medium

646-64

Ru(III) Catalysed Oxidation of Aryl Styryl Ketones by Periodate in Acid Medium: A Kinetic Study

386-38

Kinetics of Oxidation of Cyclic Ketones by Periodate Catalysed by Os(VIII), Ru(III) & Os(VIII) + Ru(III) Mixture

592-59

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Not AvailableConservation agriculture (CA) is being advocated as an alternative to conventional tillage based systems, as it not only holds the potential to enhance soil biological properties, but could also sustain production in the long-run. The impact of long-term tillage and nutrient management on soil biological properties, crops performance, yield and returns were evaluated under maize-mustard rotation. Three tillage practices viz. zero tilled flatbed (ZTFB), permanent bed (PNB) and conventional tillage (CT) along with three nutrient management practices; farmer’s fertilizer practices (FFP), recommended dose of fertilization (RDF) and nutrient expert assisted: site-specific nutrient management (NE®) were tested under the field conditions for six years (2013–2019). ZTFB produced the highest average maize grain yield, which was statistically similar to PNB; however it was 28.4% greater than CT. NE® and RDF recorded 27.4% and 24.8% higher yield over FFP, respectively. Similarly, ZTFB and PNB produced 8.0% greater mustard seed yield than CT, while NE® and RDF had 23.5% and 22.3% greater seed yield compared to FFP. Average of six years indicates, ZTFB and PNB produced 9.7% and 8.9% greater maize grain equivalent yield (MGEY) than CT. Furthermore, NE® and RDF had similar MGEY, but 24.9% and 23% greater than FFP. ZTFB and PNB gave the maximum economic benefits in comparison to CT plots. CT was 18.7% and 19.3% costlier than PNB and ZTFB, while RDF was more expensive than NE® and FFP. Plots under ZTFB and PNB had 13.9% and 17.8% (0.0 0.15 m soil profile) and 14.6% and 12.5% (0.16 0.30 m soil profile) greater soil organic carbon (SOC) than CT plots. These practices also had significant (p<0.05) positive impact on soil biological properties, such as, soil microbial biomass carbon (SMBC), dehydrogenase (DH), alkaline phosphatase (AP) and urease (UA) activities. In 0.0 0.15 m soil layer, NE® had greater values for SOC and SMBC than FFP, but not significantly different to RDF. This study clearly demonstrated that the adoption of conservation tillage (ZTFB / PNB) coupled with NE® and RDF in maize-mustard rotation would definitely improve system MGEY, net returns and soil biological properties in semi-arid regions of the north-west India.Not Availabl

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Not AvailableConservation agriculture (CA)-based practices have been promoted and recouped, as they hold the potential to enhance farm profits besides a consistent improvement in soil properties. A 7 years’ field experiment consisting of three crop establishment practices viz., zero-till flatbed (ZTFB), permanent beds (PNB), conventional system (CT) along with the three-nutrient management; nutrient expertbased application (NE), recommended fertilization (RDF), and farmers’ fertilizer practice (FFP), was carried out from 2013 to 2020. The CA-based practices (ZTFB/PNB) produced 13.9–17.6% greater maize grain-equivalent yield (MGEY) compared to the CT, while NE and RDF had 10.7–20% greater MGEY than the FFP. PNB and ZTFB gave 28.8% and 24% additional net returns than CT, while NE and RDF had 22.8% and 17.4% greater returns, respectively over FFP. PNB and ZTFB had 2.3–4.1% (0.0–0.20 m soil layers) lower bulk density than the CT. Furthermore, microbial biomass carbon (MBC) increased by 8–19% (0.0–0.50 m soil layers) in ZTFB/PNB over the CT, and by 7.6–11.0% in NE/RDF over FFP. Hence, CA-based crop establishment coupled with the NE or RDF could enhance the yields, farm profits, soil properties of the maize–chickpea rotation, thereby, could sustain production in the long run.Not Availabl