Performance of High‐Magnesium Cultivars of Three Cool‐Season Grasses Grown in Nutrient Solution Culture

Sabreen, Shamima; Saiga, Suguru; Saitoh, Hirokazu; Tsuiki, Mikinori; Mayland, H. F.

doi:10.1081/pln-120017667

Cited by 9 publications

(10 citation statements)

References 13 publications

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“…There was no difference (P = 0.681) in the concentrations of Mg between the 2 varieties of tall fescue (Table 1). This observation does not agree with work previously published for HiMag tall fescue (Crawford et al, 1998;Sabreen et al, 2003;Shewmaker et al, 2004). Crawford et al (1998) reported an increase (22%) in the concentration of Mg when HiMag was compared with other tall fescue varieties.…”

Section: Methodscontrasting

confidence: 82%

“…Similarly, application of Mg fertilizer decreased Na concentrations in Barcel (P = 0.001) but not in HiMag (P = 0.677) tall fescue (Table 3). Previous publications detailing the mineral composition of HiMag relative to other varieties of tall fescue have not reported Na concentration data (Wilkinson and Mayland, 1997;Crawford et al, 1998;Sabreen et al, 2003). Moseley and Baker (1991) reported a decrease in the Na concentration of a high-Mg ryegrass as compared with a standard ryegrass variety but did not attempt to explain the reported difference.…”

Section: Methodsmentioning

confidence: 95%

“…The variety of tall fescue had no effect (P = 0.066) on the concentrations of S (Table 1). Previous studies investigating mineral concentration differences in Hi-Mag tall fescue vs. other grass species have not reported the S concentration (Wilkinson and Mayland, 1997;Crawford et al, 1998;Sabreen et al, 2003).…”

Section: Methodsmentioning

confidence: 97%

“…Crawford et al (1998) found no difference in K concentrations of 4 varieties of tall fescue, including HiMag. Sabreen et al (2003) conducted 3 growth-chamber experiments comparing HiMag with 2 other varieties of tall fescue. Po- uptake by the plant and that some grass species have a greater tendency for uptake of divalent cations relative to monovalent cations depending on the cation ex- change capacity of their root system.…”

Section: Methodsmentioning

confidence: 99%

“…The scientific literature contains several reports on the success of breeding forage grasses to increase the concentrations of Mg to alleviate hypomagnesemia, commonly known as grass tetany (Moseley and Baker, 1991;Wilkinson and Mayland, 1997;Crawford et al, 1998). In the studies reported by Wilkinson and Mayland (1997) and Sabreen et al (2003), the concentrations of K were reduced in the grasses bred to contain higher concentrations of Mg. In addition, the concentrations of Ca and Mg were increased, which resulted in a lower grass tetany ratio, defined as the ratio of K to the sum of Ca and Mg (Smith et al, 1999).…”

Section: Introductionmentioning

confidence: 99%

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The Effect of Formulation and Amount of Potassium Fertilizer on Macromineral Concentration and Cation-Anion Difference in Tall Fescue

Swift

Bittman

Hunt

et al. 2007

Journal of Dairy Science

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This study investigated the feasibility of altering the dietary cation-anion difference (DCAD) in grass by altering the grass variety and the amount and formulation of K fertilizer application. In experiment 1, treatments were combinations of 2 varieties (Barcel and Hi-Mag) of tall fescue (Festuca arundinacea Schreb); 2 rates of K (0 and 250 kg/ha), supplied as KCl; and 2 rates of Mg (0 and 60 kg/ha), supplied as MgO. In experiment 2, K fertilizer was applied at 0 or 125 kg/ha as KCl or K2SO4. There was no difference between HiMag and Barcel tall fescue in the concentrations of Mg, S, and Cl. Application of K fertilizer decreased concentrations of Mg, but the magnitude of the decrease was not consistent across harvests. Conversely, application of Mg fertilizer increased Mg concentrations, but again, the magnitude of the increase was not consistent across harvests. The concentrations of Ca were higher in HiMag than in Barcel tall fescue, with the magnitude of the difference increasing from first to last harvest. Potassium fertilizer decreased Ca concentrations in the first, fourth, and fifth harvests only. Calcium concentration was decreased by a greater magnitude in HiMag tall fescue as a result of Mg fertilization. The HiMag tall fescue contained lower concentrations of K than did Barcel tall fescue in the first, second, and third harvests. Application of K fertilizer increased the K concentration in all 5 harvests but did not affect Na concentrations except in the last harvest. The HiMag tall fescue contained less Na than did Barcel, but the magnitude of the difference was affected by K and Mg fertilization. Application of K fertilizer decreased S concentrations in first-harvest grass, increased concentrations in second-and third-harvest grasses, and had no effect in fourth-or fifth-harvest grasses. Application of Mg fertilizer decreased S concentrations of tall fescue. Application of K fertilizer increased DCAD values for grass harvested from the second through fifth harvests. The increase in DCAD attributable to K fertilizer was less in HiMag than in Barcel tall fescue. Application of K fertilizer as K2SO4 increased dry matter yield and S concentrations of HiMag tall fescue, whereas K applied as KCl increased concentrations of K and Cl. There was no effect of fertilizer formulation on Na concentrations. The DCAD was lower in HiMag tall fescue fertilized with K2SO4 compared with that fertilized with KCl. This study showed that DCAD of grass can be manipulated by the choice of grass variety, fertilizer formulation, and fertilizer application rate.

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Section: Methodscontrasting

confidence: 82%

Section: Methodsmentioning

confidence: 95%

Section: Methodsmentioning

confidence: 97%

Section: Methodsmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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The Effect of Formulation and Amount of Potassium Fertilizer on Macromineral Concentration and Cation-Anion Difference in Tall Fescue

Swift

Bittman

Hunt

et al. 2007

Journal of Dairy Science

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Revisiting variation in leaf magnesium concentrations in forage grasses for improved animal health

et al. 2020

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Aims An Italian ryegrass cultivar (Lolium multiflorum Lam. cv. Bb2067), selected and bred for increased leaf magnesium (Mg) concentration in the 1970s, reduced the incidence of hypomagnesaemia in sheep under experimental grazings. Here, we report evidence from archival experiments showing that cv. Bb2067 had consistently greater Mg concentrations at multiple sites. We also aimed to quantify variation in leaf Mg concentration among modern perennial ryegrass (Lolium perenne L.), hybrid ryegrass (Lolium perenne × multiflorum), and tall fescue (Festuca arundinacea Shreb.) cultivars. Methods Data are reported from unpublished 1980s fieldplot experiments for cv. Bb2067 and contemporaneous reference cultivars, sown at two UK locations in 1983 and 1984, and from 397 cultivars of modern forage grass in 13 UK-based breeding experiments sampled in spring 2013. Results Across sites, years and cuts, cv. Bb2067 had a consistently greater leaf Mg concentration and lower potassium (K) concentration and forage tetany index (FTI) than reference cultivars in the 1980s experiments. Seasonal variation in leaf Mg and K concentrations and FTI were observed in the 1980s experiments, with K concentrations being generally greatest and Mg concentrations smallest in spring. Among modern forage grasses, there was large variation in leaf Mg concentration (up to 6.3-fold) and FTI (up to 2.1-fold), both within and between species, which varied independently of yield. Among a subset of hybrid ryegrass cultivars, there is evidence that the high Mg trait is already present in some modern breeding lines, albeit previously unreported. Conclusions The variation in leaf Mg concentration and FTI among old and new cultivars shows there is considerable potential to breed forages with improved mineral quality to improve livestock health, potentially without compromising yield or other nutritional traits.

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Phosphorus fertilization affects cation balance in cool-season grasses associated with grass tetany

Sabreen

Saiga

Islam

et al. 2022

Journal of Plant Nutrition

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Performance of High‐Magnesium Cultivars of Three Cool‐Season Grasses Grown in Nutrient Solution Culture

Cited by 9 publications

References 13 publications

The Effect of Formulation and Amount of Potassium Fertilizer on Macromineral Concentration and Cation-Anion Difference in Tall Fescue

The Effect of Formulation and Amount of Potassium Fertilizer on Macromineral Concentration and Cation-Anion Difference in Tall Fescue

Revisiting variation in leaf magnesium concentrations in forage grasses for improved animal health

Phosphorus fertilization affects cation balance in cool-season grasses associated with grass tetany

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