Volume 15
Issue 1
Horticulture
JOURNAL OF
POLISH
AGRICULTURAL
UNIVERSITIES
Available Online: http://www.ejpau.media.pl/volume15/issue1/abs-05.html
GROWTH, QUALITY AND PRODUCTIVITY IN STOOL BEDS OF ROOTSTOCKS M.9 AND M.26
Tomasz Lipa
Department of Pomology, University of Life Sciences in Lublin
ABSTRACT
The study was conducted in the years 1998-2002, at two private nursery farms in the Lublin region, and comprised the estimation of the productivity of the stool bed, and of the quality and the growth dynamics of two apple-tree rootstocks with the greatest economic importance – M.9 and M.26.
Comparing the growth of rootstocks in M.9 and M.26 nurseries on the basis of their length and diameter, and estimating the weight of a single leaf, it was found that all of those traits achieved higher values in the mother plantation of the M.26 rootstock. The growth dynamics of both rootstocks under estimation was similar – the greatest growth increments were recorded during the initial three months. In each of the experiment the nursery of M.26 rootstocks was more productive than that of M.9 rootstocks. The number of rootstocks taken out depended on the age of the mother plantations and increased in the successive years. On average, in the final year of the experiment nearly 80% rootstocks more were obtained than in the first year of the experiment. The highest percentage share, for both M.9 and M.26 rootstocks, was noted for offshoots with diameters above 8 mm – 43.9% and 68.2%, respectively. In the M.9 nursery twice as many non-rooted offshoots were obtained (15.6%) than in the case of the M.26 rootstock.
It was demonstrated that there are correlations among the growth parameters studied, the correlations being stronger between the offshoots diameters and their length than between the length of rootstock offshoots and the weight of a single leaf.
Key words: stool bed, offshoot diameter and length, productivity.
Tomasz Lipa
Department of Pomology, University of Life Sciences in Lublin
Leszczyńskiego 58,
20-068 Lublin, Poland
email: tomasz.lipa@up.lublin.pl
Responses to this article, comments are invited and should be submitted within three months of the publication of the article. If accepted for publication, they will be published in the chapter headed 'Discussions' and hyperlinked to the article.