Potato Research

, Volume 50, Issue 3–4, pp 341–345 | Cite as

The Canon of Potato Science: 33. Haulm Killing

  • C. Kempenaar
  • P. C. Struik

What is it?

Harvesting can only be done successfully when the tubers have reached a certain level of maturity. Maturation of tubers improves skin set thus improving the resistance to scuffing and skinning, increases resistance to bruising and other types of damage during harvesting and handling, and prolongs storage life by decreasing storage decay and reducing water loss during storage. More mature tubers also have a higher starch content and lower reducing sugar content than less mature tubers.

In many potato growing areas the potato crop does not senesce naturally and tubers do not mature naturally, but growers destroy the crop when it is still partly green and tubers are still growing. So, tuber maturation is artificially induced by killing the haulm. Killing potato vine (haulm) is usually done 10−25 days prior to harvesting the potato tubers, although in some cases it is done only a few days before harvesting. Green-crop harvesting also does occur under very specific conditions or...


Seed Tuber Diquat Black Scurf Vine Killing Seed Potato Production 
These keywords were added by machine and not by the authors. This process is experimental and the keywords may be updated as the learning algorithm improves.

Further Reading

  1. Caldiz DO, Fernandez LV, Struik PC (2001) Physiological age index: a new, simple and reliable index to assess the physiological age of seed potato tubers based on haulm killing date and length of the incubation period. Field Crops Res 69:69–79CrossRefGoogle Scholar
  2. Dijst G (1989) The effect of chemical haulm destruction and haulm pulling on potato black scurf caused by Rhizoctonia solani AG-3. PhD Thesis Wageningen University, WageningenGoogle Scholar
  3. Kempenaar, C., Groeneveld, R.M.W., Uenk, D., 2004, An innovative dosing system for potato haulm killing herbicides. XII International Conference on Weed Biology, Dijon, 31 Aug. to 2 Sept. 2004: AFPP-Conference Proceedings, pp 511–518Google Scholar
  4. Struik PC, Wiersema SG (1999) Seed potato technology. Wageningen Pers, WageningenGoogle Scholar

Copyright information

© EAPR 2008

Authors and Affiliations

  1. 1.Plant Research InternationalWageningen University and Research CentreWageningenThe Netherlands
  2. 2.Crop and Weed EcologyWageningen UniversityWageningenThe Netherlands

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