Pasture management and cultural methods for the control of annual ryegrass (Lolium rigidum) in wheat

1975 ◽  
Vol 15 (75) ◽  
pp. 527 ◽  
Author(s):  
TG Reeves ◽  
IS Smith
Keyword(s):  
Chemical Control ◽  
Untreated Control ◽  
Annual Ryegrass ◽  
Lolium Rigidum ◽  
Pasture Management ◽  
Grain Yields ◽  
Cultural Methods ◽  
Heavy Grazing ◽  
Second Year

The effects of four pasture management treatments-haycutting, heavy grazing, burning and a control-and two cultural treatments,-mouldboard or disc ploughing-on the densities of annual ryegrass (Lolium rigidum) under subsequent wheat crops, was measured in 16 experiments conducted from 1961 to 1968. Pasture management treatments before cropping significantly reduced subsequent ryegrass populations in first, second, third and fourth year crops, compared with the untreated control and increased grain yields in the first and second year crops. Subsequent ryegrass populations were reduced more by mouldboard ploughing than by disc ploughing and this was reflected in higher yield for all crops. The results indicate that these management and cultural methods may obviate the need for chemical control in first and second year crops.

Selective chemical control of annual ryegrass (Lolium rigidum) in oilseed rape, field peas and lupins

1974 ◽  
Vol 14 (71) ◽  
pp. 771 ◽  
Author(s):  
TG Reeves ◽  
JM Lumb
Keyword(s):  
Brassica Napus ◽  
Oilseed Rape ◽  
Chemical Control ◽  
Annual Ryegrass ◽  
Lolium Rigidum ◽  
Grain Yields ◽  
Pisum Arvense ◽  
Field Peas ◽  
North Eastern ◽  
Selective Chemical

The effectiveness of herbicides for selective control of annual ryegrass (Lolium rigidum) in oilseed rape (Brassica napus), field peas (Pisum arvense) and narrow-leafed lupins (Lupinus angustifolius) was investigated in nine experiments in north-eastern and southern Victoria. Of the herbicides tested, di-allate, trifluralin and simazine significantly reduced ryegrass populations in all experiments where they were used. Pre-planting incorporated treatments were generally more effective than post-sowing or post-emergence treatments in oilseed rape and field peas. Control of ryegrass generally resulted in higher grain yields in all three crops, although lupins showed the greatest response. Dalapon, applied to oilseed rape after emergence, caused flower distortion and reduced yields in some experiments.

The selective chemical control of Wimmera ryegrass in wheat with di-allate and tri-allate

1972 ◽  
Vol 12 (54) ◽  
pp. 55 ◽  
Author(s):  
TG Reeves ◽  
CL Tuohey
Keyword(s):  
Chemical Control ◽  
Crop Damage ◽  
Lolium Rigidum ◽  
Grain Yields ◽  
Economic Basis ◽  
Wimmera Ryegrass ◽  
Selective Chemical

Two herbicides, di-allate and tri-allate, were compared for the pre-emergence control of Wimmera ryegrass (Lolium rigidum) in wheat at three different locations in the Victorian wheatgrowing areas. Both herbicides significantly reduced ryegrass populations in the crop, but di-allate was consistently more effective than tri-allate. Grain yields were generally enhanced by spraying, but 1.12 kg a.i. per hectare of either material sometimes caused crop damage when applied before sowing. On an economic basis, di-allate at 0.56 kg a.i. per hectare was superior to all other treatments whether applied just before or just after sowing.

Weeds in grain-lupins. 1. The effect of weeds on grain-lupin yields

1977 ◽  
Vol 17 (84) ◽  
pp. 112 ◽  
Author(s):  
JM Allen
Keyword(s):  
Grain Yield ◽  
Lupinus Angustifolius ◽  
Annual Ryegrass ◽  
Grain Production ◽  
Lolium Rigidum ◽  
Grain Yields ◽  
Different Levels

Narrow-leafed lupins (Lupinus angustifolius) were grown at two densities in weed free conditions and with different levels of either capeweed (Arctotheca calendula) or annual ryegrass (Lolium rigidum). Capeweed that germinated six weeks before the lupins prevented grain production. Germinated with the lupins, 30 capeweed plants m-2 reduced grain yields by 20 per cent compared with 10 capeweed plants m-2, which was not significantly different from the weed free control. Thirty capeweed plants m-2 that germinated six weeks after the lupins did not reduce grain yields. Ryegrass reduced grain yields by 70 per cent when it germinated six weeks before the lupins. Germinated with the lupins, 90 ryegrass plants m-2 reduced grain yields by 47 per cent compared with the weed free control. Ninety ryegrass plants m-2 that germinated six weeks after the lupins did not reduce grain yield.

Assessment of a decision support system for chemical control of annual ryegrass (Lolium rigidum) in winter cereals

Weed Research ◽  
2011 ◽  
Vol 51 (3) ◽  
pp. 304-309 ◽  
Author(s):  
J L GONZALEZ-ANDUJAR ◽  
C FERNANDEZ-QUINTANILLA ◽  
F BASTIDA ◽  
R CALVO ◽  
J IZQUIERDO ◽  
...  
Keyword(s):  
Decision Support ◽  
Decision Support System ◽  
Support System ◽  
Chemical Control ◽  
Annual Ryegrass ◽  
Lolium Rigidum ◽  
Winter Cereals

Alleviation of dormancy in annual ryegrass (Lolium rigidum) seeds by hydration and after-ripening

Weed Science ◽  
2004 ◽  
Vol 52 (6) ◽  
pp. 968-975 ◽  
Author(s):  
Robert S. Gallagher ◽  
Kathryn J. Steadman ◽  
Andrew D. Crawford
Keyword(s):  
Seed Germination ◽  
Relative Humidity ◽  
Germination Rate ◽  
Dormancy Release ◽  
Annual Ryegrass ◽  
Dormant Seed ◽  
Lolium Rigidum ◽  
Time Model ◽  
Treatment Regimens ◽  
Two Populations

The effect of hydration (priming) treatment on dormancy release in annual ryegrass seeds from two populations was investigated. Hydration duration, number, and timing with respect to after-ripening were compared in an experiment involving 15 treatment regimens for 12 wk. Seeds were hydrated at 100% relative humidity for 0, 2, or 10 d at Weeks 1, 6, or 12 of after-ripening. Dormancy status was assessed after each hydration treatment by measuring seed germination at 12-hourly alternating 25/15 C (light/dark) periods using seeds directly from the hydration treatment and seeds subjected to 4 d postpriming desiccation. Seeds exposed to one or more hydration events during the 12 wk were less dormant than seeds that remained dry throughout after-ripening. The longer hydration of 10 d promoted greater dormancy loss than either a 2-d hydration or no hydration. For the seed lot that was most dormant at the start of the experiment, two or three rather than one hydration event or a hydration event earlier rather than later during after-ripening promoted greater dormancy release. These effects were not significant for the less-dormant seed lot. For both seed lots, the effect of a single hydration for 2 d at Week 1 or 6 of after-ripening was not manifested until the test at Week 12 of the experiment, suggesting that the hydration events alter the rate of dormancy release during subsequent after-ripening. A hydrothermal priming time model, usually used for modeling the effect of priming on germination rate of nondormant seeds, was successfully applied to dormancy release resulting from the hydration treatments.

Annual ryegrass (Lolium rigidum) seed survival and digestibility in cattle and sheep

2002 ◽  
Vol 42 (2) ◽  
pp. 111 ◽  
Author(s):  
R. Stanton ◽  
J. Piltz ◽  
J. Pratley ◽  
A. Kaiser ◽  
D. Hudson ◽  
...  
Keyword(s):  
Dry Matter ◽  
Control Diet ◽  
Basal Diet ◽  
Annual Ryegrass ◽  
Lolium Rigidum ◽  
Seed Survival ◽  
Dry Matter Digestibility ◽  
Cattle And Sheep

A trial was conducted to investigate the survival and digestibility of annual ryegrass (ARG) seed (Lolium rigidum L.) eaten by sheep and cattle. Sheep (n= 8) and cattle (n = 8) were fed a basal diet containing 1:1 lucerne chaff:oaten chaff with (ARG) or without (control) the inclusion of 20% total dry matter of annual ryegrass seed in a changeover design. Intake was restricted to 17 g/kg liveweight. Digestibility of the control diet was lower (P<0.01) for sheep than cattle. Annual ryegrass seed was present (P<0.01) in the faeces of both sheep and cattle within 24 h of first ingestion. Some 10.8 and 32.8% of seed ingested was excreted by sheep and cattle respectively, with 3.9% (sheep) and 11.9% (cattle) remaining germinable. Annual ryegrass seed continued to be excreted by both sheep and cattle up to 5 days after removal from the diet. Dry matter digestibility of the annual ryegrass diet was 53% in cattle.

scholarly journals Cross-Resistance to Herbicides in Annual Ryegrass (Lolium rigidum)

1990 ◽  
Vol 94 (3) ◽  
pp. 1180-1186 ◽  
Author(s):  
John M. Matthews ◽  
Joseph A. M. Holtum ◽  
David R. Liljegren ◽  
Barbara Furness ◽  
Stephen B. Powles
Keyword(s):  
Cross Resistance ◽  
Annual Ryegrass ◽  
Lolium Rigidum ◽  
Resistance To Herbicides

Temperature/light interactions and the effect of seed source on germination of annual ryegrass (Lolium rigidum Gaud.) seeds

1976 ◽  
Vol 27 (6) ◽  
pp. 779 ◽  
Author(s):  
D Gramshaw
Keyword(s):  
Constant Temperature ◽  
Day Length ◽  
Maximum Temperature ◽  
Annual Ryegrass ◽  
Lolium Rigidum ◽  
Average Temperature ◽  
Seed Sources ◽  
Alternating Temperature ◽  
Germinating Seeds ◽  
Temperature Optima

Germination of Lolium rigidum seeds, in the light (12 hr day length) and in the dark, was studied at constant and alternating (12/12 hr) temperatures in the range 8–35°C. Seeds had after-ripened for 22 weeks. Different constant temperature optima for germinability were found: 27° in light and 11° in dark. Germinability at alternating temperatures in darkness was determined solely by the minimum temperature of the alternation, and there was no response to thermoperiodicity per se. In contrast, light and alternating temperature appeared to interact to increase germinability, although the highest germinability occurred only when the maximum temperature was close to the optimum constant temperature, i.e. about 27°. Germination in both light and dark was most rapid where either the constant or the average temperature of an alternating regime was between 18 and 29°. Below 18° germination rates decreased markedly, and at 8°, rates were one-third of those at 18°. Seeds germinated more slowly in light than in darkness at all temperatures, but the differences were small relative to the effects of low temperatures.In another study, seeds collected from plants naturalized in eight different localities in the cereal belt of Western Australia and subsequently planted together in two contrasting environments were examined for germinability at 24/12°C in light and dark 18 weeks after harvest. Dark germinability differed between seed sources but not between planting sites, and ranged between 78 and 93%. Exposure of germinating seeds to light substantially alleviated dormancy in seeds from all sources.

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