scholarly journals Effect of Integrated Weed Management and Balanced Fertilization on Weed Dynamics in Coriander (Coriandrum Sativum L)

2017 ◽  
Vol 7 (6) ◽  
pp. 181-188
Author(s):  
Raj Kumar Nagar , Dinesh Kumar Jain Raj Kumar Nagar , Dinesh Kumar Jain ◽  
Keyword(s):  
Weed Management ◽  
Coriandrum Sativum ◽  
Integrated Weed Management ◽  
Balanced Fertilization ◽  
Weed Dynamics

scholarly journals Effect of Barley Sowing Density on the Integrated Weed Management of Lolium rigidum (Annual Ryegrass) in Mediterranean Dryland: A Modeling Approach

Agronomy ◽  
2021 ◽  
Vol 11 (8) ◽  
pp. 1565
Author(s):  
María Belén D’Amico ◽  
Guillermo R. Chantre ◽  
Guillermo L. Calandrini ◽  
José L. González-Andújar
Keyword(s):  
Weed Management ◽  
Life Cycles ◽  
Integrated Weed Management ◽  
Future Research ◽  
Seed Removal ◽  
Weed Infestation ◽  
High Control ◽  
Weed Dynamics ◽  
The Impact

Population models are particularly helpful for understanding long-term changes in the weed dynamics associated with integrated weed management (IWM) strategies. IWM practices for controlling L. rigidum are of high importance, mainly due to its widespread resistance that precludes chemical control as a single management method. The objective of this contribution is to simulate different IWM scenarios with special emphasis on the impact of different levels of barley sowing densities on L. rigidum control. To this effect, a weed–crop population model for both L. rigidum and barley life cycles was developed. Our results point out: (i) the necessity of achieving high control efficiencies (>99%), (ii) that the increase of twice the standard sowing density of barley resulted in a reduction of 23.7% of the weed density, (iii) non-herbicide-based individual methods, such as delayed sowing and weed seed removal at harvest, proved to be inefficient for reducing drastically weed population, (iv) the implementation of at least three control tactics (seed removal, delay sowing and herbicides) is required for weed infestation eradication independently of the sowing rate, and (v) the effect of an increase in the sowing density is diluted as a more demanding weed control is reached. Future research should aim to disentangle the effect of different weed resistance levels on L. rigidum population dynamics and the required efficiencies for more sustainable IWM programs.

scholarly journals Weed dynamics under semidry rice as influenced by integrated weed management

2020 ◽  
Vol 8 (6) ◽  
pp. 1739-1743
Author(s):  
V Soujanya ◽  
M Goverdhan ◽  
T Ram Prakash ◽  
A Srinivas
Keyword(s):  
Weed Management ◽  
Integrated Weed Management ◽  
Weed Dynamics

Influence of integrated weed management on weed dynamics and productivity of chili

2018 ◽  
Vol 5 (03) ◽  
Author(s):  
RP JAISWAL ◽  
DHANANJAI SINGH ◽  
AK NAIDU
Keyword(s):  
Weed Management ◽  
Chenopodium Album ◽  
Weed Suppression ◽  
Yield Enhancement ◽  
Integrated Weed Management ◽  
Weed Species ◽  
Ripe Fruit ◽  
Paddy Straw ◽  
Weed Dynamics ◽  
Dry Fruit

A field experiment was carried out at Vegetable Research Farm, Mahrajpur, Department of Horticulture, JNKVV, Jabalpur (M.P.) to study the efficacy of different herbicides and mulches against weeds in chili, It was recorded that dominant weed flora in the experiment was Eragrostis cillansis and Cyperus rotindus among monocot weeds, Chenopodium album, Melilotus alba, Anagallis aruensis and Parthenium hysterophorus among dicot weeds. Highest weed density of all the weed species, dry weed biomass were recorded in weedy check plots. Pendimethalin @ 1.5 l/ha + black polythene mulch resulted in the highest plant height (75.3 cm), number of primary branches per plant (15.66), number of fruits per plant (73.33), yield of red ripe fruit (134.7q/ha-1) and yield of dry fruit (22qha-1) followed by Pendimethalin @ 1.5 l/ha + paddy straw mulch. Therefore, pendimethalin @ 1.5 l/ha + black polythene mulch resulted in the most effective treatment in terms of weed suppression and yield enhancement of chili crop.

Influence of annual forages on weed dynamics in a cropping system

2000 ◽  
Vol 80 (1) ◽  
pp. 187-198 ◽  
Author(s):  
Allison Schoofs ◽  
Martin H. Entz
Keyword(s):  
Weed Control ◽  
Community Composition ◽  
Weed Management ◽  
Cropping System ◽  
Triticum Aestivum L ◽  
Integrated Weed Management ◽  
Wild Oat ◽  
Forage Crops ◽  
Winter Triticale ◽  
Weed Dynamics

Alternatives to herbicides are needed for weed control. Field studies were conducted in 1994/1995 and 1995/1996 to investigate the nature of forage crop-weed dynamics and to test the effect of single year forage crops on the density and community composition of annual weeds in a following field pea (Pisium sativum L.) test crop. Five spring-seeded forage treatments were compared with wheat (Triticum aestivum L.) grain crops (with or without herbicides for grassy and broadleaved weeds): winter triticale (Triticosecale) (simulation grazed); spring triticale (silage); spring/winter triticale intercrop (silage, then simulation grazed); alfalfa (Medicago sativa L.) (hay); sorghum-sudangrass (Sorghum bicolor [L.] Moench × Sorghum sudanese [Piper]) (hay); and a weedy fallow (silage). A fall rye (Secale cereale L.) grain crop and a sweet clover (Melilotis officinalis L.)/winter triticale double crop (hay, then simulation grazing) were included in the 1995/1996 trial. All forage systems were at least as effective as the sprayed wheat control in suppressing wild oat (Avena fatua L.); however, effects on other weeds, especially broadleaved species, were variable. Biennial crops provided the best early season weed control, while long-season systems such winter triticale and the triticale intercrop provided the best late season weed control. Forages shifted the weed community composition away from wild oat and green foxtail (Setaria viridis L. Beauv.) to a similar or greater extent than herbicide-treated wheat. Forage systems that did not provide season-long crop competition tended to have more broadleaved weeds. Some forage systems increased pea grain yield the following year (relative to the sprayed wheat control); however, forages alone did not eliminate the need for herbicides in the pea crop. Annual forages may play an important role in integrated weed management, especially for wild oat, however further research to refine forage-based weed management systems is needed. Key words: Integrated weed management, alfalfa, intercropping, double cropping, organic farming

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