Optimising pasture production to minimise weed growth

Eerens, J. P. J.; Rahman, A.; James, T.K.

doi:10.33584/jnzg.2002.64.2451

Cited by 3 publications

(3 citation statements)

References 12 publications

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“…The effectiveness depends on the duration, intensity, and density of grazing, as well as the type and number of grazing animals [169]. Improving crop competitiveness by selecting more competitive crop varieties [170] and optimizing environmental conditions [171] can be useful in controlling weeds.…”

Section: Integrated Weed Management Strategiesmentioning

confidence: 99%

Weed Management Methods for Herbaceous Field Crops: A Review

Gao,

2024

Agronomy

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Weeds compete with crops for water and nutrients and can adversely affect crop growth and yield, so it is important to research effective weed control methods. This paper provides an overview of the impact of weeds on crop yield and describes the current state of research on weed management in field herbaceous crops. Physical weed control mainly refers to thermal technologies represented by flame weed control and laser weed control, which can efficiently and accurately remove weeds. Mechanical weed control requires a combination of sensor technologies, machine vision technology, and high-precision navigation to improve weed control accuracy. Biological weed control relies heavily on plant extracts and pathogens to create herbicides, but it is costly, and some can be toxic to mammals. Chemical weed control is a common method, resulting in environmental pollution and weed resistance. To reduce the use of chemical herbicides, scholars have proposed integrated weed management strategies, which combine biological control, control of the seed bank, and improve crop competitiveness. Integrated weed management strategies are considered to be the future direction of weed management. In conclusion, physical, mechanical, biological, and chemical weed control methods are commonly used in weed management. Each method has its applicable scenarios, and the implementation of integrated weed management strategies can lead to better weed control, improving crop yield and quality. The main objective of this review is to organize the research progress on weed management methods for herbaceous crops in the field and to provide a reference for the agricultural sector to develop weed control strategies. Specifically, this paper categorizes weed management methods into four groups, discusses and presents the advantages and disadvantages of the aforementioned weed control methods, and discusses future research directions.

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Section: Integrated Weed Management Strategiesmentioning

confidence: 99%

Weed Management Methods for Herbaceous Field Crops: A Review

Gao,

2024

Agronomy

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“…Thus, graziers should be informed about responsible management techniques to ensure that desirable pasture species have been established and that these pastures respond well to grazing and other stressors. Furthermore, pastures could be maintained at a longer height range for increases in pasture productivity and increased weed control [35].…”

Section: Trial 2 Effect Of Three Grass and Three Broadleaf Pasture Sp...mentioning

confidence: 99%

Utilization of the Neighborhood Design to Evaluate Suitable Pasture Crops and Their Density for Navua Sedge (Cyperus aromaticus) Management

Kim,

Chauhan

2024

Agronomy

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Navua sedge (Cyperus aromaticus), a perennial plant native to Africa, poses a significant weed concern due to its capacity for seed and rhizome fragment dissemination. Infestations can diminish pasture carrying capacity, displacing desirable species. Despite the burgeoning interest in integrated weed management strategies, information regarding the efficacy of competitive interactions with other pasture species for Navua sedge management remains limited. A pot trial investigated the competitive abilities of 14 diverse broadleaf and grass pasture species. The results indicated a range of the reduction in Navua sedge dry biomass from 6% to 98% across these species. Subsequently, three broadleaf species—burgundy bean (Macroptilium bracteatum), cowpea (Vigna unguiculata), and lablab (Lablab purpureus), and three grass species—Gatton panic (Megathyrsus maximus), Rhodes grass (Chloris gayana), and signal grass (Urochloa decumbens) were chosen for a follow-up pot trial based on their superior dry biomass performance. These six species were planted at three varying densities (44, 88, and 176 plants/m2) surrounding a Navua sedge plant. Among the grass pasture species, Gatton panic and Rhodes grass exhibited high competitiveness, resulting in a minimum decrease of 86% and 99%, respectively, in Navua sedge dry biomass. Regarding the broadleaf species, lablab displayed the highest competitiveness, causing a minimum decrease of 99% in Navua sedge dry biomass. This study highlights the increasing efficacy of crop competition in suppressing weed growth and seed production, with the most significant suppression observed at a density of 176 plants/m2.

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“…The degree of success is determined by grazing time, intensity, and pressure, as well as the type and amount of animal used for grazing (Ghanizadeh, Harrington, 2019c). Further improving crop competitiveness also contributes to successful weed management, through selecting more competitive plant species (Wardle et al, 1995) and optimizing the environmental conditions (Eerens et al, 2002). Using these strategies in combination with others is important as biotic and abiotic stresses can allow space for weeds to establish (Ghanizadeh, Harrington, 2019c).…”

Section: Use Of Integrated Weed Managementmentioning

confidence: 99%