ISHS Acta Horticulturae 346: V International Symposium on Vaccinium Culture
LINGONBERRY CULTURAL MANAGEMENT RESEARCH IN WISCONSIN, USA |
| Authors: | E.J. Stang, M.D. Anderson, S. Pan, J. Klueh |
| Keywords: | Vaccinium vitis-idaea L., weed control, photoperiod requirements, yield, irrigation, soil organic matter |
| Abstract:
Our research on basic cultural requirements for lingonberry (Vaccinium vitisidaea L.) focused on chemical weed control, irrigation water requirements, soil organic matter incorporation, photoperiod responses and cultivar adaptation to the northern US environment. Terbacil, oryzalin and simazine herbicides provided effective weed control for the growing season at application rates recommended for other perennial crops. Napropamide herbicide was least effective in suppressing weeds. Increasing irrigation from 40% of field capacity to 100% field capacity of loamy sand soil increased the number of rhizomes on lingonberry by 37% and number of shoots per plant by 39% in 1992. ‘Erntedank’ and ‘Koralle’ responded with increased growth to preplant organic matter incorporation, either peat or sawdust. Organic matter incorporation greater than 3000 kg/ha did not incrementally enhance plant growth. Photoperiod studies verified flower initiation in lingonberry occurs at 8 to 12 hr daylength (12 to 16 hr night) in Wisconsin. A minimum of 8 weeks photoperiod is required for maximum flower induction. Preliminary yield data indicate ‘Koralle’, ‘Erntedank’ and Wisconsin selections WI 102, WI 103, WI 104 and WI 107 are adapted to central Wisconsin sandy soils and environment. Fruit anthocyanin content was highest for ‘Koralle’, WI 102 and WI 107 in 1991, ranging from 15 to 18 mg/100g fruit at harvest. | |
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