Publication Date

11-2024

Series Number

DPIRD-92

Publisher

Department of Primary Industries and Regional Development

City

Perth

Abstract

Root, hypocotyl and stem base diseases can be significant problems in lupin crops, reducing stand density, plant vigour and yield. Root disease is present in nearly all narrow leafed lupin (Lupinus angustifolius) paddocks but in the majority of paddocks has only a small impact on crop development. However, in paddocks where high levels of root rot occurs, plant establishment, seedling vigour and crop yield can be significantly affected.

When a root disease is present in a crop very little can be done to manage it in that cropping season. It is therefore vital that the cause is correctly identified to allow appropriate management to take place before sowing the next lupin crop. Correct identification can be made from symptoms on the root and hypocotyl or stem base of affected plants. Above ground symptoms such as poor emergence, patches in crops, uneven and stunted growth, yellowing of plants and wilting or death under water stress, particularly at flowering and grain fill, can indicate the presence of root disorders. These above ground symptoms are rarely diagnostic as many biotic and abiotic disorders will have similar above ground expression.

This page describes above and below ground symptoms of the common root and hypocotyl diseases occurring in lupins in Western Australia (WA). Management recommendations for each are outlined.

Number of Pages

6

Keywords

Lupin, Lupin root disease, Pleiochaeta root rot, Rhizoctonia bare patch, Rhizoctonia hypocotyl rot, Sclerotinia basal and collar rot, Phytophthora root rot, Pythium root rot, Charcoal rot, Nematodes

Disciplines

Agricultural Economics | Agricultural Education | Agricultural Science | Agronomy and Crop Sciences | Animal Sciences | Biosecurity | Entomology | Fungi | Parasitic Diseases | Parasitology | Plant Pathology

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