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Impact of nutrient management in rice-maize-greengram cropping system and integrated weed management treatments on summer greengram productivity

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Title Impact of nutrient management in rice-maize-greengram cropping system and integrated weed management treatments on summer greengram productivity
Not Available
 
Creator Dibakar Ghosh
Koushik Brahmachari
Sukamal Sarkar
Nirmal Kumar Dinda,
Anupam Das
Debojyoti Moulick
 
Subject Brassica seed meal; Neem cake; Integrated weed management, Herbicide; Nutrient management, Ricemaize- greengram cropping system
 
Description Research article
Nutrient and weed management in crops and especially cropping system play an important role to enhance productivity
and sustainability in different cropping systems. A field experiment was conducted for two consecutive years to evaluate
the effect of nutrient management in preceding crops and integrated weed management practices in summer greengram on
weeds growth and greengram productivity. The nutrients were applied in previous rice and maize crops and greengram
was grown under residual soil fertility. The inorganic nitrogenous (N) fertilizer (25% of recommended dose) was
substituted with bulky organic manures [farm yard manure (FYM) and vermicompost] and concentrated organic manures
[Brassica seed meal (BSM) and neem cake]. The weed management treatments comprised of: herbicide use alone [postemergence
application (PoE) of imazethapyr 100 g/ha at 25 days after sowing (DAS)] and integrated weed management
approach [pre-emergence application (PE) of pendimethalin 750 g/ha at 2 DAS followed by (fb) hoeing at 25 DAS]. The
addition of concentrated organic manures (BSM and neem cake) effectively reduced the germination and overall growth
of the weeds probably due to released allelochemicals. The N supplementation using neem cake and BSM decreased the
weed biomass and reduced the nutrient uptake by weeds, and enhanced the nutrient uptake of greengram crop which
ultimately enhanced the greengram growth and seed yield. This effect was more pronounced in the second year of study
due to repeated application of organic manures. In comparison to use of herbicide alone (imazethapyr), the integrated
weed management (pendimethalin PE fb hoeing) reduced the weed density and biomass accumulation by ~50 and 80%,
respectively. The integrated weed management also enhanced the greengram seed yield by 12 and 9% compared to
herbicide usage alone during 2015 and 2016, respectively.
Not Available
 
Date 2024-02-14T14:48:44Z
2024-02-14T14:48:44Z
2022-03-24
 
Type Article
 
Identifier Not Available
Print ISSN: 0253-8050 | Online ISSN: 0974-8164
http://krishi.icar.gov.in/jspui/handle/123456789/81359
 
Language English
 
Relation Not Available;
 
Publisher Indian Society of Weed Science ICAR-Directorate of Weed Research, Maharajpur, Jabalpur, India 482 004