Effects of fertilizers on the sulphur content of herbage

McLaren, R. G.

doi:10.1111/j.1365-2494.1976.tb00780.x

Cited by 7 publications

(5 citation statements)

References 10 publications

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“…These results are consistent with those of Reith et al (1964) and Whitehead et al (1978), who also found that the effect of fertilizer N outweighed that of KCl. The finding that the higher S concentrations occurred on the No plot at harvest 4 is consistent with results of McLaren (1976) and Whitehead et al (1983).…”

Section: Fertilizer Nsupporting

confidence: 92%

“…Increased concentrations of Ca and Mg in summer herbage have been reported elsewhere (Reith et al, 1964;Fleming and Murphy, 1968;Metson and Saunders, 1978). Increases in Na and Mn between spring and summer were reported by Hemingway (1961;1962) and Metson et al (1979), and a higher concentration of S in later cut herbage was noted by McLaren (1976). However, other previous studies have shown little evidence of consistent patterns of seasonal variation with regard to concentrations of Na (Metson and Saunders, 1978;Whitehead etal, 1983), Zn (Reay and Marsh, 1976;Metson et al, 1979) or total S (Whitehead et al, 1983).…”

Section: Seasonal Variationmentioning

confidence: 75%

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Response of permanent and reseeded grassland to fertilizer nitrogen. 2. Effects on concentrations of Ca, Mg, K, Na, S, P, Mn, Zn, Cu, Co and Mo in herbage at a range of sites

Hopkins¹,

Adamson²,

Bowling³

1994

Grass and Forage Science

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The concentration of mineral elements in herbage from permanent swards of mixed species composition (predominantly Agrostis spp., Holcus lanatus. Festuca rubra, Lolium perenne, Poa spp., etc.) was compared with that from sown perennial ryegrass {Lolium perenne) at two fertilizer rates (0 and 300 kg N ha"' year"', both with P and K) and with L perennelTrifolium repens (at 0 N with P and K). The investigation was conducted over four years at sixteen contrasting sites in England and Wales. Herbage samples for mineral analysis were taken at first and fourth harvests (May and August) each year from plots under 4-weekly cutting. There was a wide degree of variation between sites, particularly for concentrations of Ca, Mg, Na and all trace elements analysed. Herbage from L. perenne reseeds had significantly higher concentrations of Ca, Mg, Na, Co and S, but K, Mo, Zn, Cu and P were generally lower than in the permanent swards. L. perennelT. repens swards had the highest concentration of major cations, but trace element levels were generally intermediate between those for 0 N permanent and L perenne swards. Fertilizer N reduced concentrations of Ca, Mn, Mo and S, and increased Mg, Na and Zn, with no consistent effects on K, Co and Cu. Herbage at harvest 4, compared with harvest 1, had higher Ca, Mg, Na, Mn, Zn and S. Permanent and L perenne swards responded similarly to fertilizer N and between harvest dates. Results are discussed in relation to previous reports of botanical and fertilizer effects on mineral concentrations, and the mineral requirements of livestock. Changes in mineral concentration resulting from reseeding permanent swards are considered unlikely to increase mineral-related livestock disorders, and in many cases could be beneficial, though problems might arise on sites where some elements, e.g. Cu and Mg, are low.

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Section: Fertilizer Nsupporting

confidence: 92%

Section: Seasonal Variationmentioning

confidence: 75%

Response of permanent and reseeded grassland to fertilizer nitrogen. 2. Effects on concentrations of Ca, Mg, K, Na, S, P, Mn, Zn, Cu, Co and Mo in herbage at a range of sites

Hopkins¹,

Adamson²,

Bowling³

1994

Grass and Forage Science

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“…Application of K fertilizer decreased (P = 0.025) S concentrations in first-harvest grass, increased S concentrations in second-and third-harvest grasses (P = 0.014 and 0.008, respectively), and had no effect on S concentrations in fourth-and fifth-harvest grasses (P = 0.351 and 0.122, respectively). McLaren (1976) reported that regardless of harvest, the application of 78 or 314 kg/ha of KCl fertilizer reduced S concentrations in grass, and hypothesized this was attributable to dilution with increasing yield or, second, that S uptake was reduced because of competition for uptake with Cl in the K fertilizer. Roche et al (2002) found that increasing KCl fertilizer application from 0 to 225 kg/ha of K did not affect the S concentration of pastures in either of 2 experiments.…”

Section: K Fertilizermentioning

confidence: 99%

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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“…These losses are almost certainly due to a combination of plant uptake and leaching. McLaren (1976) observed that, at a site close to the present Midlothian trial even where large amounts of sulphur were applied every year for twenty years, no significant accumulation of sulphur occurred in the soil. This probably occurred because soil organic matter levels remained fairly constant rather than increasing over this period.…”

Section: Soil Sulphatementioning

confidence: 81%