FUNGI ISOLATED FROM GROUNDNUTS IN SOME LOCATIONS OF WEST JAVA

Authors

  • O S.DHARMAPUTRA SEAMEO BIOTROP

DOI:

https://doi.org/10.11598/btb.1996.0.9.126

Abstract

ABSTRACT One hundred and ninety eight groundnut samples were collected from freshly harvested groundnuts (FHG), farmer storage systems (FSS), middlemen warehouses (MW), wholesalers (WS) and retailer sample (RS) during the dry and wet seasons from Cidolog, Cianjur, Sukabumi and Bogor, West Java, Indonesia, in  1990/1991. The moisture  content  (m.c.),  intactness of kernels,  and  the percentages of groundnut kernels  infected by  each species of fungi were analyzed. In genera), the m.c. of the samples collected during the dry season was lower  than of those collected during the wet season. Also, the m.c. of samples collected from FHG, FSS and MW was higher than of those collected from WS and RS. The m.c. of samples collected from FHG was the highest (12.5-45.75%), but the percentages of damaged kernels were the lowest (2.5-13.8%), because the samples were shelled manually. A  total  of  25  species  of  fungi  were  isolated  from  samples  collected  from  the  4  localities.  They  were Acremonium strictum, Aspergillus candidus, A. flavus, A. niger, A. ochraceus, A. tamarii, A. wentii, Botryodiplodia theobromae,  Cladosporium  cladosporioides,  C.  sphaerospermum,  Eumtium  chevalieri,  E.  repens,  E.  rubrum, Fusarium equiseti, F. longipes, F. oxysporum, F. semitectum, Mucor sp., Papulaspora sp., Pestalotia sp., Penicillium aethiopicum, P. citrinum, Rhizapus sp., R. stolonifer and Syncephalastrum sp. The  predominant  fungi  in  samples  collected  from  Cidolog  and  Sukabumi  during  the  dry  season were Aspergillus wentii, while those collected from Cianjur and Bogor were A. niger. The  percentages  of  kernels  infected  by  A. wentii  in  samples  collected  from Cidolog  and Sukabumi were between 30-100% and 36-100%, respectively, while those of kernels infected by A. nigerin samples collected from Cianjur and Bogor were between 34-93% and 14-98%, respectively. The predominant fungi in samples collected from each location during the wet season were A. flavus. The percentage of kernels infected by the fungus in samples collected from Bogor was the highest (83-100%).Key words:  Indonesia/West  Java/Stored  product  pests/Groundnut/Fungi/Acremonium  strictum/Aspergillus sp./Botryodiplodia  theobromae/Cladosporium  sp./Eurotium  sp./Fusarium  sp./Mucor  sp./Papulaspora sp./Pestalotia sp./SPenicillum sp/Rhizopus sp./Syncephalastrum sp./Moisture content.

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