In high tech greenhouses, it can grow well across North America, producing uniform, savory fruits.
TYPE: Red color grape tomato
PLANT TYPE: Indeterminate (open)
AVERAGE FRUIT WEIGHT: 13 grams
USE: High tech greenhouses
IR: On / Ma/Mi/Mj
DR0603TC offers an excellent disease resistance package. Grafting is strongly recommended to confer extra stamina and ensure good production levels in long crops. Consider high vigor rootstocks like DR0141TX, Multifort, and Maxifort for this variety. In most cases, a 2:1 grafting ratio will be sufficient for growers’ needs, but 1:1 is possible. If the crop is grown in an environment with heat, humidity, and stress, each rootstock should be loaded with no more than three heads per plant.
Planning Your Crop
The success of DR0603TC depends on establishing the correct head density. Independently of the season, the head density must be adjusted to accommodate the microclimate. Because of its average vigor, adjusting the head density before heading into summer heat is particularly important, to ensure the leaf area has sufficient time to establish itself.
A good reference point for growers in Canada is to use roughly five heads per square meter, which should be in place during the summer. During long crop cycles, this variety will become very generative during summer time, producing leaves that are short and open. This means density is crucial to both vigor and longevity.
Plant Vigor, Pruning, and Management
DR0603TC is an easy to grow variety for its balanced response early in the season. It generally starts the season well balanced, offering growers an easy start. If transplanted between December and February, it typically does not deliver first trusses with semi-rounded fruits. One of its hallmarks since being introduced has been high vigor uniformity of fruit shape throughout the growing season.
DR0603TC can deliver beautiful trusses with between 12 to 18 flowers. For more uniform trusses bearing 10 to 16 fruits, prune the tail end of the truss. As a general rule of thumb, pruning the last 2–3 fruits also works well.
Planning your labor is very important to ensure all work is done on time. For crops transplanted in January, we advise a summer plant density of 50 percent of the final target.
Irrigation, Nutrition, and Harvesting
To help minimize issues with fruit cracking, avoid watering too early when DR0603TC plants are not yet active. From a nutrition perspective, monitoring electrical conductivity (EC) is crucial. Avoid large differences between EC in feed and EC in substrate in order to help minimize fruit cracking.
When it comes to harvest, DR0603TC offers compact, uniform trusses that are easy to work with. It can be harvested loose, with fruits coming off the vine easily while avoiding fruit fall issues. Truss splitting is also rare.
When harvesting as a truss, you may need to harvest a few loose tomatoes to avoid cracking while the last fruits ripen. Another option would be a more aggressive pruning to cause the plant to bear fewer fruits per truss.
For additional information, please contact one of your De Ruiter Seed technical sales representatives in North America.