Conservation Tillage and Weed Management

Shrestha, Anil; Lanini, Tom; Wright, Steve; Vargas, Ron; Mitchell, J. P.

doi:10.3733/ucanr.8200

Cited by 15 publications

(9 citation statements)

References 29 publications

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“…Further, the initial transition to no-till may present issues with weed management (Hobbs, 2007). Farmers may also use no-till for several years but then till if they experience challenges with weed management (Shrestha et al, 2006). It may take some time before farmers learn to adequately manage pests with no-till production.…”

Section: Resultsmentioning

confidence: 99%

Modeling No-Till Adoption by Corn and Soybean Producers: Insights Into Sustained Adoption

Wade

Claassen

2017

J. Agric. Appl. Econ.

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Abstract.No-till acreage has increased in recent years, but many farmers alternate no-till with other tillage practices, limiting public and private benefits from sustained no-till adoption. Revealed preference data are used in an ordered logit regression analysis to determine the effect of soil characteristics, climate, regions, farm characteristics, and producer demographics on producers' choices to use continuous tillage, alternate no-till systems with tillage systems, or continuously use no-till. The model provides insight into the characteristics and conditions that are conducive to each tillage regime. The attributes found to significantly affect continuous no-till use are erodibility classification, drainage, farm size, and climate.

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Section: Resultsmentioning

confidence: 99%

Modeling No-Till Adoption by Corn and Soybean Producers: Insights Into Sustained Adoption

Wade

Claassen

2017

J. Agric. Appl. Econ.

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“…The PLALA and BEAVX (perennial species) could have been encouraged by the no-till conditions. Indeed reduced/no-till practices commonly increase the abundance of perennials [24,43,44], since their propagules are not buried to depths unfavorable to emergence and not uprooted and killed as under tillage [45]. POLAV and PICEC, the latter being strictly correlated with RC II, had the lowest Ellenberg N score (2 and 1, respectively), associated with an oligotrophic attitude, suggesting that they can be easily found in environments with low levels of nitrogen in the soil [46].…”

Section: Weed Community and Managementmentioning

confidence: 99%

Mulch-Based No-Tillage Effects on Weed Community and Management in an Organic Vegetable System

Testani¹,

Ciaccia²,

Campanelli³

et al. 2019

Agronomy

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Weeds can cooperate with the agroecosystem’s functioning by providing ecosystem services. Effective weed management should mitigate negative weed–crop interference, while maintaining a functional and balanced weed community. In a two-year trial, the in-line/roller crimper (RC) was used to terminate an agroecological service crop (ASC; here barley, Hordeum vulgare L.) before organic zucchini (Cucurbita pepo, L.) and compared with green manure (GM) ASC and tilled no-ASC with Mater-Bi mulch on the rows (No_ASC). Zucchini yield, soil N availability, weed density/cover, biomass, and community composition were assessed. Analysis of variance, exploratory statistical analysis, and non-parametric inferential approaches were run, respectively, on agronomic data, species-specific weed frequencies, and Shannon diversity. Zucchini yield was the highest in No_ASC, due to soil N immobilization under high C:N barley residues in GM and RC. Multivariate analysis discriminated RC from tilled systems, outlining a specific ensemble of weed species correlated to Shannon diversity. From zucchini fruit set, RC selectively favored Polygonum aviculare L. and Helminthotheca echioides (L.), reasonably because of their oligotrophy and creeping habit. Their dominance finally caused low RC weed control. Results highlight strong weed selective pressure by the mulch-based no-tillage. Understanding the mechanisms underpinning the impact of soil management practices on weed community can drive towards a tailor-made and more effective weed management.

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“…The weed species that germinate in response to light are likely to be more problematic in CA. In addition, perennial weeds become more challenging in this system (Vogel 1994;Shrestha et al 2006). In the past, attempts to implement CA have often resulted in a yield penalty because reduced tillage failed to control weed interference (Muliokela et al 2001).…”

Section: Weed Managementmentioning

confidence: 99%

Weed Management in Conservation Agriculture Systems

Singh

Barman

Singh

et al. 2014

Conservation Agriculture

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Conservation agriculture (CA) does have several advantages over conventional tillage (CT)-based agriculture in terms of soil health parameters. However, weeds are the major biotic constraint in CA, posing as a great challenge towards its adoption. The presence of weed seeds on the upper soil surface, due to no tillage operation, leads to higher weed infestation in CA, and so far, herbicides are the only answer to deal with this problem. Overreliance of herbicide use showed its consequence in terms of environmental pollution, weed shift and herbicide resistance development in weeds. Growing herbicide-tolerant crops using nonselective herbicides could be a broad-spectrum weed management technique to tackle weed shift, but the same is being resulted in the evolution of more problematic 'super weed'. These observations indicate the need of integrated weed management technologies involving the time tested cultural practices, viz. competitive crop cultivars, mulches, cover crops, intercrops with allelopathic potential, crop diversification, planting geometry, efficient nutrient, water management, etc., along with limited and site-specific herbicide application. The modern seeding equipment, e.g. 'Happy Seeder' technology, that helps in managing weeds through retention of crop residues as mulches, besides providing efficient seeding and fertilizer placement, shows the promise of becoming an integral part of CA system.

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Conservation Tillage and Weed Management

Cited by 15 publications

References 29 publications

Modeling No-Till Adoption by Corn and Soybean Producers: Insights Into Sustained Adoption

Modeling No-Till Adoption by Corn and Soybean Producers: Insights Into Sustained Adoption

Mulch-Based No-Tillage Effects on Weed Community and Management in an Organic Vegetable System

Weed Management in Conservation Agriculture Systems

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