<i>Glasshouse study of the value of biosolids-derived organomineral fertilizers for perennial ryegrass growth</i>

2020 ◽  
Author(s):  
Diogenes L. Antille ◽  
Bernadette K. McCabe ◽  
Serhiy Marchuk ◽  
Jochen Eberhard ◽  
Craig P. Baillie
Keyword(s):  
Perennial Ryegrass ◽  
Ryegrass Growth

Effect of defoliation frequency on an irrigated perennial pasture in northern Victoria. 1. Seasonal production and sward composition

1997 ◽  
Vol 48 (6) ◽  
pp. 811 ◽  
Author(s):  
A. R. Lawson ◽  
P. W. G. Sale ◽  
K. B. Kelly
Keyword(s):  
Growth Rate ◽  
Perennial Ryegrass ◽  
White Clover ◽  
Dry Matter ◽  
Early Spring ◽  
Defoliation Frequency ◽  
Clover Content ◽  
Pasture Yield ◽  
Clover Pasture ◽  
Ryegrass Growth

A field experiment was carried out to investigate whether changes in winter and post-winter defoliation frequency would increase the white clover content of an irrigated perennial ryegrass–white clover pasture in northern Victoria. Pastures defoliated every 4 weeks during winter had higher white clover growing point (stolon apices with at least 2 nodes) density at the end of winter than pastures defoliated every 8 weeks or those receiving a single defoliation after 16 weeks, but these differences did not affect the clover content in the spring. Reasons for this are suggested. Pastures defoliated at 8-week intervals in winter were the most productive over winter{early spring. Less frequent defoliation (4 v. 2 weeks) during the post-winter, September–May period reduced white clover growing point and perennial ryegrass tiller densities. However, the white clover growth rate during this period was increased by less frequent defoliation, whereas the ryegrass growth rate was reduced, resulting in an increase of 10% in the white clover content, and a 1·9 t dry matter (DM)/ha increase in total DM produced. This higher clover content and pasture yield during spring–autumn with less frequent defoliation has important implications for the management of irrigated perennial pastures for the dairy industry in northern Victoria.

A root aphid Aploneura lentisci is affected by Epichloë endophyte strain and impacts perennial ryegrass growth in the field

2021 ◽  
Author(s):  
Alison J. Popay ◽  
David. E. Hume ◽  
Wade J. Mace ◽  
Marty J. Faville ◽  
Sarah C. Finch ◽  
...  
Keyword(s):  
Perennial Ryegrass ◽  
Ryegrass Growth ◽  
Epichloë Endophyte

scholarly journals Can irrigating more frequently mitigate detrimental heat wave effects on perennial ryegrass growth and persistence?

2020 ◽  
Vol 291 ◽  
pp. 108074
Author(s):  
Adam D. Langworthy ◽  
Richard P. Rawnsley ◽  
Mark J. Freeman ◽  
Paul A. Waller ◽  
Ross Corkrey ◽  
...  
Keyword(s):  
Heat Wave ◽  
Perennial Ryegrass ◽  
Wave Effects ◽  
Ryegrass Growth

Perennial Ryegrass Growth Responses to Mycorrhizal Infection and Humic Acid Treatments

2014 ◽  
Vol 106 (2) ◽  
pp. 585-595 ◽  
Author(s):  
Ali Nikbakht ◽  
Mohammad Pessarakli ◽  
Naghmeh Daneshvar-Hakimi-Maibodi ◽  
Mohsen Kafi
Keyword(s):  
Humic Acid ◽  
Perennial Ryegrass ◽  
Growth Responses ◽  
Mycorrhizal Infection ◽  
Ryegrass Growth ◽  
Acid Treatments

scholarly journals Effects of mycorrhizae and water conditions on perennial ryegrass growth in rare earth tailings

RSC Advances ◽  
2019 ◽  
Vol 9 (19) ◽  
pp. 10881-10888
Author(s):  
Qiao Yang ◽  
Zhongqiu Zhao ◽  
Zhongke Bai ◽  
Hong Hou ◽  
Ye Yuan ◽  
...  
Keyword(s):  
Rare Earth ◽  
Arbuscular Mycorrhizal Fungi ◽  
Soil Nutrients ◽  
Perennial Ryegrass ◽  
Mycorrhizal Fungi ◽  
Arbuscular Mycorrhizal ◽  
Plant Roots ◽  
Water Conditions ◽  
Rare Earth Tailings ◽  
Ryegrass Growth

Mycorrhizal symbioses, which include plant roots and arbuscular mycorrhizal fungi (AMF), can significantly enhance plant resistance and promote the absorption of soil nutrients by plants.

scholarly journals High lipid perennial ryegrass growth under variable nitrogen, water and carbon dioxide supply

2018 ◽  
pp. 219-224
Author(s):  
Zac D Beechey-Gradwell ◽  
Somrutai Winichayakul ◽  
Nick J Roberts
Keyword(s):  
Perennial Ryegrass ◽  
Energy Content ◽  
Field Trials ◽  
High Lipid ◽  
Pot Trials ◽  
The Usa ◽  
Metabolisable Energy ◽  
Novel Strategy ◽  
Practical Implications ◽  
Ryegrass Growth

A novel strategy to increase the metabolisable energy content of pasture species has been the development of a GM technology (‘High metabolisable energy’ or HME), which when expressed in the leaves of perennial ryegrass, increases leaf lipids up to 6-7% of DW (approximately double ‘normal’ levels). Remarkably, increased rates of photosynthesis and growth also occur in these plants. The industry strategy is to perform field trials overseas to establish the value proposition for New Zealand. Here, results are presented from preliminary growth-chamber pot trials which reveal the influence of the HME technology on perennial ryegrass growth under different levels of N, H2O and CO2 supply. HME increased perennial ryegrass growth under high N supply, limiting and non-limiting H2O supply, and with ambient and elevated CO2 supply. Possible HME growth mechanisms and their practical implications are discussed. Progress on the 2017 field trial in the USA using offspring from the HME crossing programme is also discussed.

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