Home » News

Assessing the Gapong Symptoms on Peanut Pods and Its Possible Control Mode

The “gapong” symptom was firstly published in around 1930’s. This term is used to express the condition of peanut pods that its seeds do not fully fulfilled (mostly are empty pods), blackened pods, brittle shells and sometimes rot. Many peanut farmers in ex-Karisidenan Cirebon complain about that symptom, as it is caused huge economic failure more than it is caused by foliar diseases infection. Until recently, the main cause for “gapong” incidence has not fully identified and therefore the management treatment has not been fixed. Survey on peanut crops in Cirebon and Majalengka regency during the dry season 2008 showed that the term of “gapong” pointed the unhealthy peanut pods with various conditions. The grouping based on the main cause resulted in gapong could be caused by nematode attack, soil pest attack, soil borne diseases infestation, as well as physical wounds. All these causes are reasonably controlled or at least their infestation can be minimized by applying pesticides or other control technologies. Whilst, the “gapong” that refers to pod condition of blackened, burned-symptom of shells, harsh surface and brittle and followed with hard stems, is unsolved problem. The research results seemingly indicated that the availability of macro nutrients N, P, K, Ca, and organic manure have a special relation to the appearance of “gapong” symptom. In addition, the application of rice straw as mulch is somehow successful in minimizing the “gapong” symptom. The free-foliar diseases infection crops as well as fungal seed treatment with Captan gave a good prospect in reducing the amount of damaged/rotted pods. In the future, we keen to enrich the local wisdom in combating “gapong” symptom with our research findings.

Source: A.A. Rahmiana, Y. Baliadi

Related News