Yield, Chemical Composition and Digestibility by Sheep of Orchardgrass Fertilized with Different Rates of Nitrogen and Sulphur or Associated Red Clover

Panditharatne, S.; Allen, V. G.; Fontenot, J. P.; McClure, W. H.

doi:10.2527/jas1986.623813x

Cited by 18 publications

(10 citation statements)

References 10 publications

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“…Differences that occurred due to increased N fertilization from 80 to 140 kg N/ha were not significant. A similar influence of N fertilization on higher NDF content in orchardgrass was reported by Panditharatne et al (1986). Puoli et al (1991) also reported no influence on NDF content in warm-season grasses.…”

Section: Resultssupporting

confidence: 76%

“…A similar influence of N fertilization on higher NDF content in orchardgrass was reported by Panditharatne et al (1986). Puoli et al (1991) also reported no influence on NDF content in warm-season grasses. ..bí,d... Means within columns and treatments with the same superscript do not differ between themselves (P>0.05) TP:CP -proportion of true protein from total CP in % NDF-CP:CP-proportion of cell-wall CP from total CP in % Ageing of Italian ryegrass caused increases of ADF, NDF and cellulose content (P < 0.05) while the content of ADL was not affected with the exception of grass which cut on May 22, when compared to other harvests, had a higher lignin content (P < 0.05).…”

Section: Resultssupporting

confidence: 73%

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Some environmental effects on relationships betweenin saccodegradability of protein and dry matter and chemical composition of Italian ryegrass

Babnik

1995

Archiv für Tierernaehrung

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The environmental effects on chemical composition and the rate and extent of crude protein (CP) and dry matter (DM) degradation of Italian ryegrass (Lolium multiflorum Lam.) in the rumen were studied. More intensive nitrogen (N) fertilizing (40, 80 and 140 kg N/ha) increased the content of the water, CP, true proteins and the effective degradability of CP (P < 0.05). Especially in the spring harvest such fertilizing increased the content of acid detergent fibre (ADF), neutral detergent fibre (NDF), cellulose and crude fibre (CF) as well as the rate of DM degradation (P < 0.05) and caused lower DM solubility while the content of hemicellulose was not affected. The most rapid changes due to grass ageing occurred in springtime. The content of DM, ADF, NDF, cellulose, hemicellulose and CF increased with maturity while the degradation rate and effective DM degradability decreased. The season and the trial location influenced the chemical composition of grass and the degradability of both DM and CP (P < 0.05). The closest multiple regression (the lowest RSD) was between the effective protein degradability and CP, NDF, ADF and and acid detergent lignin (ADL) (R2 = 0.97). Relatively good estimation of effective protein degradability was obtained using an exponential regression equation on the basis of CP content (R2 = 0.72), NDF content (R2 = 0.67) or effective DM degradability (R2 = 0.71) while the effective DM degradability may be estimated on the basis of DM solubility (R2 = 0.94), CF content (R2 = 0.93), ADF content (R2 = 0.94), ADL content (R2 = 0.85) or NDF content (R2 = 0.96). When estimating the effective CP and DM degradability from chemical composition, the error that occurs is most evidently influenced by N fertilizing and by time of harvest.

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Section: Resultssupporting

confidence: 76%

Section: Resultssupporting

confidence: 73%

Some environmental effects on relationships betweenin saccodegradability of protein and dry matter and chemical composition of Italian ryegrass

Babnik

1995

Archiv für Tierernaehrung

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“…Van Soest (1982) has noted the positive effects of N fertilization on the resulting concentrations of lignin within harvested forages. This generalization has been corroborated in a recent 3‐yr study with eastern gamagrass [ Tripsacum dactyloides (L.) L.] in Wisconsin (Coblentz et al, 2010), but other studies have not been supportive (Reid et al, 1966; Scarbrough et al, 2006) or have yielded only numerical trends (Panditharatne et al, 1986). Increased concentrations of lignin can be responsible for depressed digestibility, but these responses also are dependent on the overall balance of other compensatory factors, such as concentrations of WSC (Van Soest, 1982).…”

Section: Discussionmentioning

confidence: 67%

Cultivar, Harvest Date, and Nitrogen Fertilization Affect Production and Quality of Fall Oat

Coblentz

Jokela

2014

Agronomy Journal

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Previous research has shown that oat (Avena sativa L.) has promise as a fall-forage option for dairy producers. In addition, dairy producers often have a recurring need to identify opportunity windows for manure hauling other than before or after production of corn (Zea mays L.). Our objectives were to evaluate the effects of N fertilization, cultivar selection, and harvest date on dry matter (DM) yield, N uptake, N recovery, and the nutritive value of fall-grown oat forages fertilized with either urea (46-0-0) or bedded-pack manure obtained from a dairy-heifer facility. Two cultivars of oat (ForagePlus and Ogle) were planted in August 2011 and 2012, fertilized with bedded-pack manure (23 or 45 Mg ha -1 , wet basis) or commercial urea (46-0-0) at rates of 0, 20, 40, 60, or 80 kg N ha -1 , and then harvested on two dates. Climatic conditions differed sharply across years, with growth responses limited by droughty conditions during 2012. During both years, DM yield increased linearly with commercial N fertilization, although the magnitude of these responses was relatively small. Yields of DM following applications of urea exceeded those of forages receiving bedded-pack manure during 2011. Apparent N recoveries increased linearly with application rate for urea during 2011 and increased with both linear and quadratic effects during 2012, but N recoveries following applications of beddedpack manures were minimal during both years (overall range = -6.2 to 2.6% of N applied). These results indicate that beddedpack manures containing wood shavings provided little immediately available N to support production of fall-grown oat.

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“…These data suggest that S effects on forage quality may be more important where bromegrass is being grazed rather than harvested for hay. Earlier work with forages (Chopra and Kanwar, 1966;Beaton et al, 1971;Baker et al, 1973;Tisdale, 1977;Boswell, 1983;Shock et al, 1983;Panditharatme et al, 1986) had shown positive effects of S fertilization on quality. Nitrogen/sulfur (N/S) ratios have been evaluated as predictors of S responses in forages (Sumner, 1978;Mitchell and Blue, 1989;Day and Parker, 1982;Bonneretal., 1984).…”

Section: Smooth Bromegrass Qualitymentioning

confidence: 96%

Sulfur Fertilization of Smooth Bromegrass in Kansas

1995

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Sulfur deficiencies have been identified throughout the central USA with increasing frequency in recent years, yet little work has been reported on S needs of perennial cool‐season forage grasses. Field studies were initiated on established smooth bromegrass (Bromus inermis Leyss.) at three sites in eastern Kansas to evaluate the effects of S fertilization on forage production and quality. Sulfur rates (0, 17, 34 kg ha−1) and sources (ammonium sulfate and ammonium thiosulfate) were evaluated with a uniform N application of 134 kg ha−1. Sulfur fertilization generally increased bromegrass forage production. Averaged across site‐years, forage yields were increased 700 kg ha‐1 annually by S application. The 17 kg S ha−1 rate was sufficient to achieve forage yield increases. Sulfur fertilization had little effect on bromegrass forage protein levels at normal harvest time, but did increase forage S concentrations. Forage protein levels of early‐season forage samples were increased by S application. When N /S ratios of the no‐S check treatments were 20:1 or greater, forage yields were increased with S application. Ammonium sulfate and ammonium thiosulfate performed equally well as S sources.

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Yield, Chemical Composition and Digestibility by Sheep of Orchardgrass Fertilized with Different Rates of Nitrogen and Sulphur or Associated Red Clover

Cited by 18 publications

References 10 publications

Some environmental effects on relationships betweenin saccodegradability of protein and dry matter and chemical composition of Italian ryegrass

Some environmental effects on relationships betweenin saccodegradability of protein and dry matter and chemical composition of Italian ryegrass

Cultivar, Harvest Date, and Nitrogen Fertilization Affect Production and Quality of Fall Oat

Sulfur Fertilization of Smooth Bromegrass in Kansas

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