A network that helps people worldwide obtain rapid advice and information on crop protection, including the identification and management of plant pests.
PestNet is a network that helps people worldwide obtain rapid advice and information on crop protection, including the identification and management of plant pests. It started in 1999. Anyone with an interest in plant protection is welcome to join. PestNet is free and is moderated, ensuring that messages are confined to plant protection.
May 2005. A farmer from Taveuni (who is also a processor), has cassava with fibrous inclusions within the root tissues. Although the photo here only shows one, he says that often there are two or three inclusions in the tuber. There appears to be no exit/entry points, the fibres are totally discreet within the tuber.
For processing (freezing), the inclusions have to cut them out, and this is very wasteful. The farmer is now losing a lot of roots.
The farmer knows that there is zinc deficiency in the area, so he added zinc, but the problem has not changed. He is now wondering about boron. The problem is worse in rocky soil.
The reference book for nutrient problems in cassava is: Asher CJ, Edwards DG, Howeler RH (1980) Nutritional disorders of cassava (Manihot esculenta Crantz). Dept. of Agriculture, University of Queensland, St Lucia, Qld.