Weed community composition after 43 years of long-term fertilization in tropical rice–rice system

Lal, Banwari; Gautam, Priyanka; Raja, R.; Nayak, A. K.; Shahid, Mohammad; Tripathi, Rahul; Bhattacharyya, Pratap; Mohanty, S.; Puri, Chandrika; Kumar, Anjani; Panda, B.B.

doi:10.1016/j.agee.2014.08.014

Cited by 12 publications

(3 citation statements)

References 46 publications

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“…N fertilisation significantly increased midseason total weed DM, and weed prevalence at harvest which is consistent with others (e.g. Blackshaw et al , ; Lal et al , ). N fertilisation caused shifts in weed species, with grass weeds more advantaged under N‐rich conditions in both years, while broadleaf weeds biomass increased when N was applied regardless of rate.…”

Section: Discussionsupporting

confidence: 91%

Weed development in spring wheat after contrasting soil tillage and nitrogen management

et al. 2016

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Soil tillage and nitrogen (N) management effects on weed species composition were evaluated in 2013 and 2014 on a clayey soil after 5‐years of organic management at the Royal Agricultural University's Harnhill Manor Farm, UK. Three tillage systems – Conventional Tillage (CT), and High and Low Intensity Non‐inversion Tillage (HINiT & LINiT) – were compared at four N fertiliser rates of 0, 70, 140 and 210 kg N ha−1. Broad‐spectrum herbicide was applied before soil operations across the site in both years. Previous organic management legacy of high weed biomass promoted greater weed prevalence in 2013 while 2‐years of herbicide inclusion reduced weed biomass. Contrasting weather conditions across the seasons affected weed incidence. In the 2014 wet season, early weed dry weight (DM) was higher under HINiT than CT and LINiT, while no differences were observed in the 2013 dry year. At midseason, weed DM was higher under HINiT than CT and LINiT in both years, which was related to higher DM of the dominant weeds Stellaria media (L.) Vill. and Sinapis arvensis L. Grass weed DM was higher under non‐inversion tillage than CT. N fertilisation increased midseason total weed DM and weed prevalence at harvest. Spring wheat yield was the highest under CT while LINiT produced 17% higher yields than HINiT. Despite higher but still tolerable weed prevalence under both non‐inversion tillage systems and with the application of N, weeds alone was not the only yield‐limiting factor. However, results show that CT is the most reliable option for weed control in changing weather, while N fertilisation rates needs to be considered.

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Section: Discussionsupporting

confidence: 91%

Weed development in spring wheat after contrasting soil tillage and nitrogen management

et al. 2016

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“…However, Banks [17] indicated that total weed density was the lowest in no fertilizer (CK) treatment and the highest in balanced fertilizer treatment (NPK), some of the weed species was decreased in its density as fertility managements became more complete. It would be the influences of fertilizer applications on density of weed communities may be sensitive to regional weed species competition [36].…”

Section: Discussionmentioning

confidence: 99%

Long-Term Diverse Fertilizer Management on Weed Species and Communities in Winter Wheat Field

Than¹,

Zhang²,

Sun³

et al. 2017

AJPS

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“…Weed diversity has an irreplaceable role in the normal functioning of the farmland ecosystem and the maintenance of regional ecological balance (Campiglia et al, 2018;Lal et al, 2014). Mahajan et al (2009) reported that uncontrolled weed growth reduces rice production by up to 57%.…”

Section: Effect Of Mrsf-crbf On the Community In Paddy Eldsmentioning

confidence: 99%

Regulation of machine-transplanted rice using side-deep fertilization on weed community and diversity influences rice production in double-cropping paddy

Zhong

Zhou

Luo

et al. 2023

Preprint

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Weed control and biodiversity conservation are required for sustainable agricultural production. The impact of long-term chemical fertilization on the agroecological environment has attracted widespread attention. To validate the effects of machine-transplanted rice using side-deep fertilization (MRSF) on weed control and weed community composition in paddy fields, a field experiment was conducted in a double-cropping rice system at the Dongting Lake in southern China. Seven fertilization treatments for early- and late-season rice were tested, including control (CK), conventional fertilization (CF), and MRSF with controlled-release blending fertilizer (MRSF-CRBF) at various nitrogen (N) rates (MC, 10% MC, 20% MC, 30% MC, and 40% MC). The highest yields of early- and late-season rice were obtained with 10% MC and 40% MC, respectively, with an increase by 2.5% and 5.0% compared to the CF treatment. The CK treatment exhibited the least weed species, while CF treatment the highest Shannon index across growth stages. The highest weed biomass of early- and late-season rice was observed under CF treatment, which was 4.5–37.7% and 4.5–24.1% higher than those in the 0–40% MC treatments, respectively. Soil pH, available potassium and available phosphorus (P) in the double-cropping paddy field were negatively correlated with weed biomass. Soil available N content was positively correlated with weed biomass in early- versus late-season rice. Soil available P content indirectly affected total weed biomass via pH and available N. Redundancy analysis showed that weed biomass was negatively correlated with soil physicochemical properties, and soil available N and organic matter content had significant effects on weed distribution. In conclusion, the MRSF-CRBF strategy effectively maintained suitable available N and P content during the late-season of rice growth, controlled weed growth, and achieved a beneficial dynamic balance between weed species and total biomass.

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Weed community composition after 43 years of long-term fertilization in tropical rice–rice system

Cited by 12 publications

References 46 publications

Weed development in spring wheat after contrasting soil tillage and nitrogen management

Weed development in spring wheat after contrasting soil tillage and nitrogen management

Long-Term Diverse Fertilizer Management on Weed Species and Communities in Winter Wheat Field

Regulation of machine-transplanted rice using side-deep fertilization on weed community and diversity influences rice production in double-cropping paddy

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