Évolution De La Digestibilité Et De La Quantité Ingérée Des Plantes Entières D'avoine, De Blé Et d'ORGE Entre La Floraison Et La Maturation Du Grain

Demarquilly, C.; Aubry, Jacqueline; Boissau, J.-M.; Bousquet, H.

doi:10.1051/animres:19700404

Cited by 5 publications

(2 citation statements)

References 2 publications

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“…The main limiting factor for the development of these crops for livestock feeding is their low nutritive value (Cannell & Jobson, 1968;Lawes & Jones, 1971;Devuyst et al 1975;Corrall et at. 1977;Aerts et al 1979;Cherney & Marten, 1982), although the decline in digestibility and nitrogen content is partly arrested by the formation of grain (Demarquilly, 1970;Corrall et al 1977;Aerts et al 1979;Cherney & Marten, 1982). The very low protein content of oats and other cereals harvested after inflorescence emergence is referred to by Nicholson (1957), Walker (1959), Lawes & Jones (1971) and Eagles el al.…”

Section: Introductionmentioning

confidence: 99%

The effect of seed rate and nitrogen fertilizer on the yield and nutritive value of oat-vetch mixtures

Moreira

1989

J. Agric. Sci.

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S U M M A R YExperiments were conducted on the seed rates of the components of oat-vetch mixtures combined with varying rates of nitrogen fertilizer in a rainfed area of north-east Portugal in 1982-3 and 1984-5.Forage oats grown alone showed a very high yield response to N and rainfall ranging from 30 to 18-2 t D.M./ha, but had a very low crude protein concentration (37-54 g/kg D.M.) and a poor mineral nutrient composition.The increased use of vetch in the seed mixture had a buffering effect on dry-matter (D.M.) yield but this depended very much on crop N nutrition. For N-deficient conditions vetch inclusion increased the D.M. yield and had a strong positive effect on total forage crude protein (CP) and mineral composition. When crop N nutrition was good, very high D.M. yields (> 12 t D.M./ha) were possible using a high proportion of oats, with vetch making a reduced contribution to the yield and nutritive value of total forage. Seed rates suggested in the literature for Mediterranean conditions are adequate for low N inputs and low available soil N, but not for high D.M. yields which can only be obtained by using a higher proportion of oats and adequate N fertilizer.

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Section: Introductionmentioning

confidence: 99%

The effect of seed rate and nitrogen fertilizer on the yield and nutritive value of oat-vetch mixtures

Moreira

1989

J. Agric. Sci.

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“…In other cases, the influence of different fertilization timings on N accumulation and losses (Woolfolk et al 2002;Abad et al 2004), a subject that plays an important role in wheat breeding (Capper 1988;Noaman & Taylor 1990), is of interest. Many studies compare and follow the N contents of the plant throughout the growing cycle (Cherney & Marten 1982 a, b ;Noaman et al 1988;Noaman & Taylor 1990), especially in later stages where the plant translocates part of the N accumulated in the plant leaves and stems to the grain where it becomes an important element that greatly influences the grain quality (Demarquilly 1970;Harper 1994).…”

Section: Introductionmentioning

confidence: 99%

Prediction of crude protein and classification of the growth stage of wheat plant samples from NIR spectra

et al. 2004

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SU MMARYNear-infrared spectroscopy (NIRS) was used to analyse the crude protein content of dried and milled samples of wheat and to discriminate samples according to their stage of growth. A calibration set of 72 samples from three growth stages of wheat (tillering, heading and harvest) and a validation set of 28 samples was collected for this purpose. Principal components analysis (PCA) of the calibration set discriminated groups of samples according to the growth stage of the wheat. Based on these differences, a classification procedure (SIMCA) showed a very accurate classification of the validation set samples : all of them were successfully classified in each group using this procedure when both the residual and the leverage were used in the classification criteria. Looking only at the residuals all the samples were also correctly classified except one of tillering stage that was assigned to both tillering and heading stages. Finally, the determination of the crude protein content of these samples was considered in two ways: building up a global model for all the growth stages, and building up local models for each stage, separately. The best prediction results for crude protein were obtained using a global model for samples in the two first growth stages (tillering and heading), and using a local model for the harvest stage samples.

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Treatment of whole-crop cereals with alkali. 1. The influence of sodium hydroxide and ensiling on the chemical composition and in vitro digestibility of rye, barley and wheat crops harvested at increasing maturity and dry matter content

Tetlow

Mason

1987

Animal Feed Science and Technology

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Évolution De La Digestibilité Et De La Quantité Ingérée Des Plantes Entières D'avoine, De Blé Et d'ORGE Entre La Floraison Et La Maturation Du Grain

Cited by 5 publications

References 2 publications

The effect of seed rate and nitrogen fertilizer on the yield and nutritive value of oat-vetch mixtures

The effect of seed rate and nitrogen fertilizer on the yield and nutritive value of oat-vetch mixtures

Prediction of crude protein and classification of the growth stage of wheat plant samples from NIR spectra

Treatment of whole-crop cereals with alkali. 1. The influence of sodium hydroxide and ensiling on the chemical composition and in vitro digestibility of rye, barley and wheat crops harvested at increasing maturity and dry matter content

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