Caingua blackberry variety

Blackberry Caingua was derived in Brazil by Embrapa Clima Temperado in cooperation with Arkansas University.
The stem of Caingua is erect to semi-erect, with short internodes. It has fewer and smaller thorns than Tupi or Xingu. The plants have low to medium vigor but are very productive. Leaves are light green with small stipules. As the plants are less vigorous than Tupi, they can be planted at a higher density.
Harvest begins in the third week of November and lasts on second week of January (Brazil area, Southern hemisphere).
The fruits of cultivar Caingua are elongated (30 mm in length and 18 mm in width), have a good appearance and pleasant taste for the fresh market. Average weight of berries is 7 g. Average yield is 1.9 kg per plant. The firmness and gloss of the fruits are medium.
Caingua has 8% color reversion after seven days of storage at 5 C, 17% after 14 days and 18% after 21 days.
The plants are not resistant, but less susceptible to rust than Tupi.
Caingua is recommended as additional or substituting variety for growers, who cultivate very popular Tupi variety in Southern hemisphere.

Table 1. Yield, average berry weight and harvest season duration of Caingua cultivar in Brazil

Year	Harvesting date		Berry weight, g/fruit	Yield, kg/plant
	First	Last
2012	19/11	09/01	6.5	1.52
2013	19/11	02/01	8.7	1.78
2014	21/11	12/01	6.5	1.72
2015	08/12	25/01	8.1	2.87
2016	11/11	29/12	6.9	1.46
2017	21/11	19/01	5.0	1.76
Avg.	22/11	11/01	7.0	1.85