www.old.international-agrophysics.org / issues


International Agrophysics
publisher:Institute of Agrophysics
Polish Academy of Sciences
Lublin, Poland
ISSN: 0236-8722


vol. 14, nr. 4 (2000)

previous paper back to paper's list next paper
Assessment of susceptibility of rape stems to shearing
(get PDF)
Skubisz G.1, Vielikanov L.2
1 Institute of Agrophysics, Polish Academy of Sciences, Doświadczalna 4, P.O. Box 201, 20-290 Lublin 27, Poland
2 Agrophysical Research Institute, 14 Grazhdansky Prospekt, St. Petersburg, 195220 Russia

vol. 14 (2000), nr. 4, pp. 427-430
abstract In the present study, the authors used a dynamic shearing and densitometric method for the asses- sment of susceptibility of stems of winter rape, vars Mar, Bolko, Leo, Ceres and Libravo to shearing. They determi- ned dynamic shearing energy per a unit of the stem cross section area, in the natural state as well as after the removed of parenchyma, density and DOD parameter, indicating the amount of X-ray energy absorbed by the stems. It was found that susceptibility of rape stems to shearing depends on their structure. A strict correlation was shown to exist between the dynamic shearing energy and the amount of X-ray radiation energy absorbed by the stem. Moreover, in study showed that the application of the X-ray method greatly enhanced the possibility to determine of the suscep- tibility of rape stems to shearing.
keywords winter rape stem, dynamic shearing energy, parameter DOD