EurekaMag.com logo
+ Site Statistics
References:
47,893,527
Abstracts:
28,296,643
+ 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

Estimating wheat herbage mass using a weighted disk






Animal Science Research Report Agricultural Experiment Station, Oklahoma State University ( P-951): 235-240

Estimating wheat herbage mass using a weighted disk

Disc height measurements were made for 4 cultivars of winter wheat (Triticum aestivum) during the 1993-94 wheat pasture year. Hand-clipped samples of forage were also obtained concurrently. The data were then analysed using regression analysis to determine the relationships between herbage mass and disc height. Overall relationships were poor; however, relationships for data collected during December 1993 and February 1994 had rsuperscript 2 values that ranged from 0.34 to 0.79.


Accession: 002831542



Related references

Vartha, E.; Matches, A., 1977: Use of a weighted disk measure as an aid in sampling the herbage yield on tall fescue pastures grazed by cattle. Agronomy Journal: 69 (5) 888-890

Vartha, E.W.; Matches, A.G., 1977: Use of a weighted-disk measure as an aid in sampling herbage yield on tall fescue pastures grazed by cattle. A rapid weighted-disc procedure was used to measure available herbage in tall fescue pasture under 1-, 2- or 4-paddock grazing rotations sampled in spring, summer and autumn. The disc was 0.2 m2 in area, weighed 2.5 kg and was dropped from a ht. o...

Green, J.T.J.; Mueller, J.P.; Rahmes, J.N., 1989: Using a falling disk meter for practical estimates of herbage mass. Calibration data was obtained for the falling disk meter on mown and sheep-grazed tall fescue (Festuca arundinacea) or fescue/ryegrass (Festuca/Lolium) pastures. The prediction equation from mown plots of vegetative growth (y = -483 + 474x), where...

Virkajarvi, P.; Matilainen, K., 1995: Predicting herbage mass of Phleum pratense L. pastures with a disk meter. A simple disk meter was calibrated for predicting herbage mass (HM) using data from pastures in Finland dominated by P. pratense rotationally grazed by cows in 1991-92. A total of 696 paired observations were made on disk height (DH) and HM >4...

Gonzalez M.A.; Hussey M.A.; Conrad B.E., 1990: Plant height disk and capacitance meters used to estimate bermudagrass herbage mass. Rapid and reliable techniques for estimating the herbage mass (HM) are essential for germplasm evaluation and proper grazing management. Since hand-clipping small quadrats is time consuming, mathetmatical relationships between easy to use, nondest...

Griggs T.C.; Stringer W.C., 1988: Prediction of alfalfa herbage mass using sward height ground cover and disk technique. Rapid, nondestructive methods of estimating herbage mass (HM) are vital to experiments involving frequent collection of data, especially where physical sampling may alter growth. Herbage mass estimation technique are based on double-sampling, in w...

Gonzalez, M.A.; Hussey, M.A.; Conrad, B.E., 1990: Plant height, disk, and capacitance meter used to estimate bermuda grass herbage mass. In field trials, the relationship between Cynodon dactylon herbage mass (HM) and non-destructive sward measurements using the following techniques: plant height, settled disc meter height and capacitance meter readings was determined on irrigated...

Gabriels, P.C.J.; Van Den Berg, J.V., 1993: Calibration of two techniques for estimating herbage mass. Two non-destructive techniques for estimating herbage mass (dry matter yield) were evaluated during the growing season of 1988, from April to September. Samples were collected from four sites, with ten observations made on twenty-five days at each...

Bryan W.B.; Thayne W.V.; Prigge E.C., 1990: Sward height and a capacitance probe for estimating herbage mass. Estimation of herbage mass is essential in pasture research and in making practical grazing management decisions. Sward height and a capacitance probe were evaluated as non-destructive measures of herbage mass at seven dates from April 16 to July...

Silva, S.C. da; Cunha, W.F. da, 2003: Indirect methods for estimating herbage mass in Cynodon spp. swards. Grazing management and planning of animal production systems from pastures are essentially based on estimates of herbage mass, production and accumulation rates. This work evaluated two methods, sward stick and rising plate meter, for estimating h...