Productivity, Yield Attributes and Weed Control in Wheat (Triticum aestivum L.) as Influenced by Integrated Weed Management in Central High Lands of Ethiopia, East Africa

Quackgrass [Elytrigia repens (L.) Nevski] is a widespread perennial weed traditionally controlled by tillage, a practice which can contribute to soil erosion and degradation. This study was initiated to determine the impact of integrated weed management strategies utilizing crop rotation, conservation tillage, and postemergence herbicides on quackgrass. Rotations of tall and semi-dwarf winter wheat (Triticum aestivum L. 'Norstar' and 'Norwin') or spring wheat (Triticum aestivum L. 'Katepwa' and 'HY320') with mustard (Brassica juncea 'Common Brown') and flax (Linum usitatissimum L. 'Norlin') were conducted at Indian Head, Saskatchewan for 4 yr to determine their effect on quackgrass shoot density, rhizome dry weight and rhizome node density. The presence or absence of winter wheat within the crop rotation had the greatest impact on quackgrass growth. During years when drought hampered winter wheat establishment, quackgrass growth was greater in winter wheat than in spring wheat, but under conditions favoring winter wheat establishment, the opposite occurred. Quackgrass growth in standard height wheat was similar to semi-dwarf wheat. Annual differences in quackgrass growth occurred between mustard and flax, but overall, no trend developed. Shoot density, rhizome biomass, and rhizome node density were not consistently correlated to crop yield. Crop rotation is a useful component of an integrated quackgrass management system. Key words: Integrated weed management (IWM), quackgrass, Elytrigia repens, crop rotation, conservation tillage

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Evaluation of growth, yield attributing characters, yield and economics of wheat (Triticum aestivum L.) in integrated weed management practice under the temperate conditions of Kashmir

INTERNATIONAL JOURNAL OF AGRICULTURAL SCIENCES ◽

10.15740/has/ijas/13.2/378-384 ◽

2017 ◽

Vol 13 (2) ◽

pp. 378-384

Author(s):

RAYEES A. SHAH

Keyword(s):

Triticum Aestivum ◽

Weed Management ◽

Management Practice ◽

Growth Yield ◽

Triticum Aestivum L ◽

Integrated Weed Management

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Influence of annual forages on weed dynamics in a cropping system

Canadian Journal of Plant Science ◽

10.4141/p98-098 ◽

2000 ◽

Vol 80 (1) ◽

pp. 187-198 ◽

Cited By ~ 32

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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Research Needs for Integrated Weed Management Systems

Weed Science ◽

10.1017/s0043174500060318 ◽

1982 ◽

Vol 30 (S1) ◽

pp. 40-45 ◽

Cited By ~ 13

Author(s):

C. G. McWhorter ◽

W. C. Shaw

Keyword(s):

Triticum Aestivum ◽

Weed Control ◽

20Th Century ◽

Weed Management ◽

Copper Sulphate ◽

Primary Source ◽

Management Systems ◽

Integrated Weed Management ◽

Research Needs ◽

The Cost

Producers of food have always been troubled with weeds. Hand labor was the primary source of weed control for centuries, and selective weed control was not achieved until copper sulphate was used to control mustard (Brassicaspp.) in wheat (Triticum aestivumL.) in 1896 (4, 42). Adequate crop selectivity was usually difficult to obtain with herbicides during the first 40 yr of the 20th century and the cost of the early herbicides was high.

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Influence of integrated weed management on growth and yield of Kharif maize (Zea mays L.)

INTERNATIONAL JOURNAL OF AGRICULTURAL SCIENCES ◽

10.15740/has/ijas/17-aaebssd/292-296 ◽

2021 ◽

Vol 17 (AAEBSSD) ◽

pp. 292-296

Author(s):

A. S. Bade ◽

J. B. Patil ◽

R. H. Shinde ◽

I. Sarwar ◽

V. R. Bavdekar

Keyword(s):

Zea Mays ◽

Weed Control ◽

Weed Management ◽

Zea Mays L ◽

Growth And Yield ◽

Integrated Weed Management ◽

Yield Attributes ◽

Control Efficiency ◽

Weed Control Efficiency ◽

Hand Weeding

A field experiment entitled, “Integrated weed management in Kharif maize (Zea mays L.)” was conducted during Kharif, 2020 at Post Graduate Research Farm, RCSM College of Agriculture, Kolhapur. The experiment was laid out in Randomized Block Design (RBD) having three replications and twelve treatments. The soil of the experimental plot was medium black clay (vertisol) with 90 cm depth, low in available N (250 kg ha-1), high in available P2O5 (30.60 kg ha-1) and medium in available K2O (290.67 kg ha- 1). The status of organic carbon content (0.34%) was low. The electrical conductivity and pH values were 4.2 dSm-1 and 7.10, respectively.Weed free check and tank mixure application of Tembotrinone 42 SC @ 120gm a.i.ha-1 + Atrazine 50 WP @ 500 gm a.i.ha-1 + surfactant @ 2ml/l of water EPoE At 20-25 DAS + fb hand weeding at 40 DAS were on par with each other and recorded significantly the higher growth and yield contributing characters viz., plant height (cm), number of functional leaves plant-1, leaf area plant-1(dm2), dry matter plant-1(g), length of cob (cm), diameter of cob(cm), number of grains, weight of grains cob-1and test weight resulting into significant increase in grain and straw yields of maize as compared to remaining weed management treatments. Tank mixure application of Tembotrinone 42 SC @ 120gm a.i.ha-1 + Atrazine 50 WP @ 500 gm a.i.ha-1 + surfactant @ 2ml/l of water EPoE At 20-25 DAS + fb hand weeding at 40 DAS recorded minimum dry weight of weed, highest weed control efficiency (86.94 %) and lowest weed index (1.79%).Significantly lowest values for growth, yield and yield attributes as well as weed control efficiency was observed in weedy check treatment.

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