Establishing plantain in spring in existing perennial ryegrass pastures in northern Tasmania

Raedts, Pieter; Langworthy, Adam D.

doi:10.1071/an18575

Cited by 5 publications

(4 citation statements)

References 5 publications

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“…This value represents 19% of the seed sown even allowing for 96% germination and competition from existing pasture. A similar study in Tasmania achieved an almost identical plant density of 63 plants/m 2 at a similar sowing rate (Raedts & Langworthy 2018). Those authors found that a high sowing rate (7.5 kg bare seed/ha) improved plantain density compared with a lower sowing rate (2.5 kg bare seed/ha) over the first 12 months.…”

Section: Resultsmentioning

confidence: 68%

Establishment of plantain into existing pastures

Bryant

Dodd

Moorhead

et al. 2019

Journal of NZ Grasslands

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In recent years plantain (Plantago lanceolata) has emerged as a potential forage for reducing nitrogen losses from dairy farm systems. However, achieving sufficient proportions of plantain in pastures to help meet target reductions in nitrate leaching presents on-farm challenges. To investigate sowing methods for establishing plantain into existing pasture to achieve high plantain populations, direct drilling was compared with broadcasting before and after grazing. Additionally, pre-graze mowing versus grazing only, and early versus late first defoliation after sowing were investigated to assess their effect on reducing competition from existing pasture. Botanical composition was determined in a small-plot study at Lincoln following summer sowing under irrigation, and from commercial dairy farms in Canterbury (irrigated) and Waikato (not irrigated). Generally, direct drilling was more effective than broadcast sowing for establishing plantain. The method of defoliation after sowing (pre-graze mowing or grazing) was not as important as timing of early defoliation in the resulting plantain populations. Early grazing, while seedlings were small enough to avoid defoliation, improved plantain establishment likely by reducing competition from the pre-existing pasture.

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Section: Resultsmentioning

confidence: 68%

Establishment of plantain into existing pastures

Bryant

Dodd

Moorhead

et al. 2019

Journal of NZ Grasslands

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“…This suggests that rejuvenating multispecies swards with the herb component is likely necessary 3+ years post initial sowing despite management practices applied. However, recent work on rejuvenation methods, such as the timing of overseeding or stitching‐in herb species within an established multispecies sward, has shown promise in terms of restoring the herb component of the pasture (Raedts & Langworthy, 2020).…”

Section: Discussionmentioning

confidence: 99%

Dry‐matter production and botanical composition of multispecies and perennial ryegrass swards under varying defoliation management

Baker

Lynch

Godwin

et al. 2023

Grass and Forage Science

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Multispecies swards, comprised of different plant functional groups have comparable production potential to high N input L. perenne swards at reduced N when legumes are included. However, information on the appropriate management of multispecies swards is limited. The effect of differing management practices on the herbage dry‐matter (DM) production and botanical composition of different sward types was investigated using a 3 × 2 × 2 factorial design plot experiment. The experiment consisted of three sward types: L. perenne‐only receiving (LP; 250 kg N ha−1 a−1); L. perenne‐Trifolium repens (LP‐TR); multispecies sward containing L. perenne, Phleum pratense, Trifolium repens, Trifolium pratense, Plantago lanceolata and Cichorium intybus (MSS). LP‐TR and MSS received 90 kg N ha−1 a−1. Harvesting of plot herbage took place every 21 or 28 days to a defoliation height of 4 or 6 cm, over two growing seasons (March to November 2020 and 2021 inclusive). Annual herbage produced by both LP and LP‐TR was not significantly affected by defoliation frequency. However, MSS produced 1923 kg DM ha−1 a−1 more herbage when harvested less frequently. Unsown species contributed significantly less to the herbage DM of MSS compared to LP and LP‐TR and remained similar in 2020 and 2021, whereas the contribution of unsown species to herbage DM increased in LP and LP‐TR from 2020 to 2021, with noxious species more associated with LP and LP‐TR than MSS. Results demonstrate the role of multispecies swards in improving the sustainability of grass‐based agricultural systems in an environment of reduced fertilizer inputs.

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“…2015) and are being considered as a drought‐tolerant component to south‐eastern Australian dairy pastures (Langworthy et al . 2018; Raedts & Langworthy 2019). Pl.…”

Section: Discussionmentioning

confidence: 99%

Variation in sex ratio of the leafminerPhytomyza plantaginisGoureau (Diptera: Agromyzidae) from Australia

Coquilleau

Ridland

et al. 2021

Austral Entomology

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Parthenogenetic reproduction has only previously been demonstrated in two species of agromyzid leafminer flies (Diptera: Agromyzidae), both from the genus Phytomyza. The plantain leafminer, Phytomyza plantaginis, is Palaearctic in origin, and bisexual populations have been observed in this region. However, historically, only females had been collected in the Australasian, Nearctic, Neotropical and Oceanian regions. Here, we show that southern Australian samples of this species from Plantago spp. can be composed of both parthenogenic and bisexual populations. In sites around Melbourne, males were present, although the sex ratio was female biased, with females comprising 75% of sampled individuals. In contrast, males were absent from collections in western and northern Victoria, Australian Capital Territory, New South Wales and Western Australia. Female P. plantaginis flies were reared from three Plantago host plants (Plantago lanceolata, Plantago major and Plantago coronopus), although females were particularly common from Pl. lanceolata. Insect cages set up with leafminers from sites where only females occurred produced only females, while cages with leafminers from sites where males occurred produced both sexes and mating was observed. Individuals from all populations were infected by Wolbachia endosymbionts, suggesting that the presence/absence of Wolbachia is not directly responsible for the parthenogenesis. However, there was an association between a mtDNA variant (PP.02) and sexual reproduction, in that this variant was absent in areas where only females were collected but present in all males and some females from areas with sexual populations. The mechanism responsible for parthenogenesis in P. plantaginis remains unknown but is linked to maternal factors.

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Establishing plantain in spring in existing perennial ryegrass pastures in northern Tasmania

Cited by 5 publications

References 5 publications

Establishment of plantain into existing pastures

Establishment of plantain into existing pastures

Dry‐matter production and botanical composition of multispecies and perennial ryegrass swards under varying defoliation management

Variation in sex ratio of the leafminerPhytomyza plantaginisGoureau (Diptera: Agromyzidae) from Australia

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