EurekaMag.com logo
+ Site Statistics
References:
52,725,316
Abstracts:
28,411,598
+ Search Articles
+ Subscribe to Site Feeds
EurekaMag Most Shared ContentMost Shared
EurekaMag PDF Full Text ContentPDF Full Text
+ PDF Full Text
Request PDF Full TextRequest PDF Full Text
+ Follow Us
Follow on FacebookFollow on Facebook
Follow on TwitterFollow on Twitter
Follow on Google+Follow on Google+
Follow on LinkedInFollow on LinkedIn

+ Translate

Calibration and evaluation of a drop-disc meter for estimating herbage production in ryegrass for silage


, : Calibration and evaluation of a drop-disc meter for estimating herbage production in ryegrass for silage. Departmental Note Scottish Centre of Agricultural Engineering ( 43): 10 pp.

The drop-disc method of estimating herbage dry matter production was evaluated for ryegrass from growth commencement to the silage stage; the latter corresponded to a max. dry matter (DM) mass of almost 7 t/ha. A close linear relationship between disc settlement height and DM mass up to 4-5 t/ha was found for the period when growth was mainly vegetative rather than reproductive.

Accession: 002042059



Related references

Douglas, J.T.; Crawford, C.E., 1994: An evaluation of the drop-disc technique for measurements of herbage production in ryegrass for silage. The drop-disc method of estimating herbage dry-matter production was evaluated for ryegrass from growth commencement to the silage stage; the latter typically corresponded to a maximum dry matter (DM) mass of almost 7 t ha-1. A close linear relati...

Farias, J.M.; Thomas, N., 1984: Evaluation of a disc-meter for estimating forage production of annual ryegrass (Lolium multiflorum Lam.). The feasibility of estimating DM and fresh forage yields was studied using an aluminium disc-meter in meadows of Italian ryegrass. The min. number of measurements needed for calibration was determined and linear regressions were used to assess the...

Smith, I.S., 1974: Evaluation of a capacitance meter for estimating herbage production of oat cultivars. The relationship between meter reading and herbage DM yield of 8 oat cv. was linear but depended on variety. Results suggested that the electronic capacitance meter was of little use where genetically diverse material was being tested.

Michell, P.; Large, R.V., 1983: The estimation of herbage mass of perennial ryegrass swards: a comparative evaluation of a rising-plate meter and a single probe capacitance meter calibrated at and above ground level. A rising-plate meter and a single-probe capacitance meter were calibrated on perennial ryegrass cv. S23, Endura and Melle swards over spring and summer 1981. The swards were rotationally grazed by cattle and from mid-June onwards they were irrigat...

K.N.kagami; S.I.ano, 2013: Improving pooled calibration of a rising-plate meter for estimating herbage mass over a season in cool-season grass pasture. To construct a new calibration method that combines usability and accuracy for estimating herbage mass from rising-plate meter readings, we derived four models differing in the way their parameters are related to sampling date and compared their e...

Currie P.O.; Hilken T.O.; White R.S., 1987: Evaluation of a single probe capacitance meter for estimating herbage yield. A single probe electronic capacitance meter for estimating herbage yields was field tested on 2 western wheatgrass (Pascopyrum smithii (Rydb.) Love), a blue grama (Bouteloua gracilis (H.B.K.) Lag. ex Griffiths), crested wheatgrass (Agropyron crist...

Zambatis, N.; Zacharias, P.J.K.; Morris, C.D.; Derry, J.F., 2006: Re-evaluation of the disc pasture meter calibration for the Kruger National Park, South Africa. During routine field application of the disc pasture meter (DPM) in the tall-grass rangeland of the Kruger National Park (KNP), South Africa, it was noticed that the instrument frequently settles above the bulk of the grass leaf mass, leading to t...

Thomson, N.A.; Upsdell, M.P.; Hooper, R.; Henderson, H.V.; Blackwell, M.B.; McCallum, D.A.; Hainsworth, R.J.; Macdonald, K.A.; Wildermoth, D.D.; Bishop Hurley, G.J.; Penno, J.W., 2001: Development and evaluation of a standardised means for estimating herbage mass of dairy pastures using the rising plate meter. Calibration data for the rising plate meter (RPM) collected from four locations and spanning a period of 10 years (1988-98) were used to develop a pooled standard set of RPM calibrations to be used to estimate herbage mass of dairy pastures across...

Earle D.F.; Mcgowan A.A., 1979: Evaluation and calibration of an automated rising plate meter for estimating dry matter yield of pasture. An automatic rising plate meter called the Ellinbank Pasture Meter (EPM) was constructed and evaluated at the Dairy Research Institute (Ellinbank [Australia]) for measuring the dry matter present on a pasture dominated by green perennial ryegrass....

Fukumi, R.; Kumai, S.; Taji, K., 1984: Studies on herbage production and nutritive value of soiling paddy rice II. Effects of the variety and fertilizer application on the herbage yield, silage quality and the feeding value of whole crop silage. The japonica varieties Kinmaze and Matsuyamamii, the indica varieties Ambar, British Honduras and Gaiya Dhan Tosar and the Chinese indica variety Peikuunen [Baikunian] were cut for silage at the milk-ripe stage. The indica varieties ripened earlie...