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.
October 2000. A question was asked by Vanuatu about the most efficient way of controlling nemaodes on ginger under an organic regime, and whether Dolicus lablab is a host for nematodes.
It is difficult to find an efficient way to control nematodes that would satisfy an organic regime. Crop rotation would be the mainstay of such a system, and the components will depend on the crops that are required.Many rotations include a legume; however, Dolichos lablab (syn. Lablab niger – hyacinth bean) is a very good host for root-knot nematode, reniform nematode and lesion nematode (Pratylenchus), all of which can cause economic decline in tropical crops. There has been some work on resistant/tolerant lines of Dolichos to root knot nematode, but it was not known how reliable the resistance is.
A paper by Graham Stirling (1989) Australasian Plant Pathology 18(2) is useful in this connection as it compares sawdust and poultry manure with urea and nematicides for root-knot nematode control in ginger. Poultry manure at either 24, 36 or 48 t/ha with urea at 900 kg gave the best overall and marketable yields. Yields were similar for all levels of poultry manure; however, without the urea, yields were about 25% lower.