Articles
Estimation of yield in raspberry fields in Ontario
Article number
1133_49
Pages
319 – 322
Language
English
Abstract
The yield potential of raspberry fields in Ontario was not known.
Consequently, a method was devised to estimate this.
Four 50-berry samples were weighed and the number of canes was counted in twenty random 1 m lengths of row.
From each 1 m length of row, one cane was removed at random and the number of lateral branches and the number of berries on each lateral branch counted.
In 1999-2000, 28 farms and seven cultivars were sampled.
Potential marketable yield was calculated to be between 23.0 and 4.2 t ha-1, and yield losses between 17.0 and 0.5 t ha-1. The major disease encountered was cane blight.
The main conclusions were that a yield potential of 20 t ha-1 with some cultivars was attainable, that growers should be able to pick at least 7 t ha-1, that cane blight needed to be controlled, and cane density rearranged so that there were fewer canes per linear metre and the rows were placed closer together.
Consequently, a method was devised to estimate this.
Four 50-berry samples were weighed and the number of canes was counted in twenty random 1 m lengths of row.
From each 1 m length of row, one cane was removed at random and the number of lateral branches and the number of berries on each lateral branch counted.
In 1999-2000, 28 farms and seven cultivars were sampled.
Potential marketable yield was calculated to be between 23.0 and 4.2 t ha-1, and yield losses between 17.0 and 0.5 t ha-1. The major disease encountered was cane blight.
The main conclusions were that a yield potential of 20 t ha-1 with some cultivars was attainable, that growers should be able to pick at least 7 t ha-1, that cane blight needed to be controlled, and cane density rearranged so that there were fewer canes per linear metre and the rows were placed closer together.
Publication
Authors
A. Dale, P. Fisher
Keywords
cane blight, cane number, Rubus idaeus
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