14 research outputs found
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
Not Available
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
Not Available
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