[8] With the conclusion of World War II and the return of affordable Hevea brasiliensis rubber (which has 8 to 10 times the yield[9]), the majority of T. kok-saghyz programs ceased.
Taraxacum kok-saghyz does best in loose, well-drained soils with high moisture retention and a pH between 5.5 and 8.5, in full or nearly-full sun.
[10] The seeds readily germinate but grow very slowly despite the early development of a strong root system.
Slow growth and weed control remain major challenges in successfully growing TKS today.
[13] The vulnerability during early life stages is the main reason why the pest risk assessment, conducted by the Julius Kühn institute, revealed little invasive potential for TKS in Germany.
[14] Currently, the main challenges of growing TKS include plant germination, seedling vigor, growth rate, and weed control.
Current studies of plant genome aim to identify genetic markers to improve TKS germplasm.
It leads to moderate to high yield losses and poses a potential threat for large scale production of TKS.
Rubber accumulation begins at germination, peaks at around one year, and then levels off or decreases due to older root tissues being shed and destroyed by microorganisms.
This blight may spread to the Hevea brasiliensis trees in Southeast Asia, which are genetically very similar to each other and to those of South America.
[4][2] In May 2019 German tire-maker Continental AG announced it was about to begin production of the "first bicycle tyre made with sustainable rubber from dandelions", which it intended to grow on the grounds of its own manufacturing plants, avoiding several of the traditional issues with H. brasiliensis latex—from the long lead-time between planting and cultivating (only six months for the dandelion, rather than seven years for the rubber tree) and volatile prices of the product due to the long transport-distances between places where the rubber can be grown and the company's factories.
[20]), changes in land use, and a general trend towards the replacement of petroleum-derived chemicals with renewables, which are pushing the search for new sources of natural rubber.
[9][22][2] An important stage of the rubber production that also plays a role in the success of the TKS as a crop, is the storage of the roots.
In order to maximise the productivity, small roots (under 10 g fresh weight) are processed or dried immediately after harvesting.
[20] Compared to other rubber producing plant, the heritability of yield related traits are lower, implying a slower breeding progress for TKS.
With the insertion of these genes into the nuclear DNA of TKS, it is possible to increase the content and the quality of rubber in the plant.
[20] Regarding the competitiveness with weeds, creating herbicide resistant TKS plants is a possible strategy to solve this problem.