Mikko Raatikainen 
,
Esko Rossi,
Irene Vänninen
Kotipihlajan marjasadon määritysmenetelmät ja marjasato.
Raatikainen M., Rossi E., Vänninen I. (1985). Kotipihlajan marjasadon määritysmenetelmät ja marjasato. Silva Fennica vol. 19 no. 2 article id 5241. https://doi.org/10.14214/sf.a15420
English title: Methods of estimation of berry yield and berry yield of rowan tree (Sorbus aucuparia)Abstract
Berry yield of rowan tree (Sorbus aucuparia L.) was studied by picking and weighing the berries in a tree, counting the number of clusters by the eye, estimating the number of clusters by samples of 0.5 m2, and by counting the dropped berries. In the last tree methods average weight of berries in a cluster was assessed by weighing a sample of clusters. The size of the tree and the abundance of the berries influenced the choice of method. The first two methods suited for small trees, the third for a tall tree with berries in abundance, and the fourth for those cases where birds had eaten a large portion of the berries.
The berry yields of 88 rowan trees were studied in Central Finland in 1983, a year of exceptionally high berry yield. The yield of berries averaged 23 kg per tree, the number of clusters 1,249 per tree and the number of berries 42,500 per tree.
The PDF includes a summary in English.
Original keywords
mittausmenetelmät;
luonnonmarjat;
marjasato;
pihlaja
English keywords
berry yield;
measuring methods;
berry crop;
rowan;
Sorbus aucuparia
Published in 1985
Views 3130
Available at https://doi.org/10.14214/sf.a15420 | Download PDF
