Rejuvenation affects nutritive value of long-established tame forages

Lardner, H.A.; Wright, S. B. M.; Cohen, R. D. H.; Curry, P.; MacFarlane, L.

doi:10.4141/a02-032

Cited by 3 publications

(2 citation statements)

References 11 publications

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“…, 2004). Rather than terminating the stand through tillage and reseeding, rejuvenation of the existing forage stand by fertilization may be the most economic and practical method to improve production and quality (Lardner et al. , 2002).…”

Section: Introductionmentioning

confidence: 99%

Plant and soil responses to nitrogen and phosphorus fertilization of bromegrass‐dominated haylands in Saskatchewan, Canada

Lkhagvasuren

Schoenau

Anderson

et al. 2011

Grass and Forage Science

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Field experiments were conducted at three different sites in Saskatchewan, Canada (Colonsay, Vanscoy and Rosthern) over two years (2005 and 2006) to determine the effects of dribble-banded and coulter-injected liquid fertilizer applied in the spring of 2005 at 56, 112 and 224 kg N ha )1 with and without P at 28 kg P 2 O 5 ha )1 . The three sites were unfertilized, 7-to 8-year old stands of mainly meadow bromegrass (Bromus riparius)-dominated haylands. All fertilization treatments produced significantly (P £ 0AE05) higher dry matter yield than the control in the year of application at the three Saskatchewan sites. There was no significant difference between the two application methods (surface dribble band vs. coulter injected) for any fertilizer treatments. The addition of 28 kg P 2 O 5 ha )1 P fertilizer along with the N fertilizer did not have a significant effect on yield in most cases. In the year of application, increasing N rates above 56 kg N ha )1 did not significantly increase yield over the 56 kg N ha )1 rate in most cases, but did increase N concentration, N uptake and protein concentration. A significant residual effect was found in the high N-rate treatments in 2006, with significantly higher yield and N uptake. In 2005, the forage N and P uptake in the fertilized treatments were significantly higher than the control in all cases. The N uptake at the three Saskatchewan sites increased with increasing N rate up to the high rate of 224 kg N ha )1 , although the percent recovery of applied N decreased with increasing rate. The P fertilization with 28 kg P 2 O 5 ha )1 also increased P uptake. Overall, rates of fertilizer of approximately 56 kg N ha )1 appear to be sufficient to produce nearly maximum forage yield and protein concentration of the grass in the year of application.

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Section: Introductionmentioning

confidence: 99%

Plant and soil responses to nitrogen and phosphorus fertilization of bromegrass‐dominated haylands in Saskatchewan, Canada

Lkhagvasuren

Schoenau

Anderson

et al. 2011

Grass and Forage Science

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“…Though, different methods of rejuvenation including fertilizer application, pasture resting, direct seeding and bale grazing have been examined in western Canada (Aasen & Bjorge, 2009;Durunna et al, 2015;GOS, 2015;Jungnitsch et al, 2011;Lardner et al, 2002;Nazarko, 2008;Schellenberg et al, 1998;Waddington, 2017) but most of these studies have only examined a few methods at a time. On-farm research is therefore needed to compare all or at least most of the practicable methods of rejuvenation to determine the most effective and profitable methods for producers.…”

Section: )mentioning

confidence: 99%

Forage Production and Economic Performance of Pasture Rejuvenation Methods in Northern Alberta, Canada

Omokanye¹,

Yoder²,

Sreekumar³

et al. 2018

SAR

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Producing high quality forage and maintaining productive pastures is a major challenge that beef producers encounter, as rejuvenation is a complex and costly challenge. This is part of a series of papers looking at potential options and methods of rejuvenation to improve the productivity of older forage stands in northern Alberta. The methods of rejuvenation investigated were sub-soiling, break & re-seeding, a combination of manure application plus subsoiling, high stock density grazing, bale grazing, pasture rest, as well as direct seeding in spring and fall. In this series, forage dry matter (DM) yield, forage nutritive value and economic performance are presented and discussed. The top 5 forage DM yielders were bale grazing, manure + subsoil in fall, break & re-seeding, high stock density grazing and fertilizer application in that order. In both years, bale grazing consistently produced higher forage DM yield than other methods including control, with bale grazing giving up to 100% higher yield at site-1 and 219% at site-2 for the 2-year total forage DM. Most forage nutritive value parameters measured were similar for the rejuvenation methods investigated. A simplified economic analysis done in this study showed that the direct input cost of rejuvenation an old forage stand was higher with the break & re-seeding method than other methods. However, for bale grazing, when the cost of hay bales used was factored in, then the cost of bale grazing far exceeded those of other methods including break & re-seeding. The implications of the results obtained in this study in relation to beef cattle production system are highlighted.

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Benefits of mixed grass–legume pastures and pasture rejuvenation using bloat-free legumes in western Canada: a review

et al. 2020

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Forage mixtures containing legume out-yield monocultures, fix atmospheric N, and have lower C footprints. However, evidence-based information on creating forage mixtures by direct seeding legumes into existing pastures is limited and bloat-free legumes non-existent. Traditionally, pastures requiring improvement in western Canada were fully replaced by breaking up the old stand and re-seeding. With new and improved forage cultivars, better seeding equipment, and increased knowledge about pasture management, there is a growing interest among producers in rejuvenating pastures instead of replacing them. Pasture rejuvenation refers to the improvement in biomass productivity and/or nutritional quality of existing pasture without removing the existing vegetation. This can be done through fertilizer application, which is generally expensive and causes negative environmental impacts. Amelioration of compacted pastureland via mechanical aeration is short-lived and can lead to weed problems. As an alternative, direct seeding of productive, nutritive and bloat-free legume species into existing pasture is an attractive option for pasture rejuvenation. For high performance grazing systems, identification of suitable bloat-free legumes and methods for direct seeding into old grass and legume stands will be essential strategies. This review includes information on the benefits of mixed pastures and seeks possible methods of introducing bloat-free forage legumes into existing pastures in western Canada for rapid improvement in productivity and quality while positively influencing animal, soil and environmental health.

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Rejuvenation affects nutritive value of long-established tame forages

Cited by 3 publications

References 11 publications

Plant and soil responses to nitrogen and phosphorus fertilization of bromegrass‐dominated haylands in Saskatchewan, Canada

Plant and soil responses to nitrogen and phosphorus fertilization of bromegrass‐dominated haylands in Saskatchewan, Canada

Forage Production and Economic Performance of Pasture Rejuvenation Methods in Northern Alberta, Canada

Benefits of mixed grass–legume pastures and pasture rejuvenation using bloat-free legumes in western Canada: a review

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