Raspberry cultivation under rain shelters in Northeast China
Raspberry production in northeastern China suffers from the rainy weather in summer and autumn. To solve this problem, a specific type of rain shelter for raspberry cultivation was designed and tested in regions of Dalian and Shenyang, northeastern China. The raspberry summer-bearing (floricane-fruiting) 'Tulameen' and the raspberry ever-bearing (primocane-fruiting) 'Qiuping' were tested in the experiment. The growth of canes, fruit firmness, soluble solids content, fruit quality, marketable fruits, yield and harvest duration were evaluated under the rain shelters and compared to the open field cultivation. The height and diameter of the primocanes under the rain shelters were significantly higher than primocanes grown in the open field. The primocane growth in Dalian was stronger than in Shenyang, possibly due to the different environmental conditions. One- or two-days rainfall significantly decreased fruit firmness and the amount of marketable fruits, and resulted in a severe yield loss because of failure to harvest in time due to the rain and fruit rot in the open field. The taste and soluble solids content were not affected when cultivated under a rain shelter. The yield of floricane-fruiting raspberry cultivated under the rain shelter was significantly higher than that in the open field. The rain shelter significantly prolonged the harvest season of the primocane-fruiting raspberry in the autumn and greatly increased the yield and the marketable fruit rate for fresh market. This is the first report of raspberry cultivation under rain shelters in China.
Dai, H.P., Chen, H.B., Zhang, C. and Lu, J. (2020). Raspberry cultivation under rain shelters in Northeast China. Acta Hortic. 1277, 245-250
raspberry (Rubus idaeus), fruit quality, yield