Abstract:
The aim of present study was to investigate the eff
ect of individual and co-inoculation of
Trichoderma
species and arbuscular mycorrhizal fungi (AMF) on
growth,
mycorrhization, population of
Trichoderma,
and wilt disease severity in pigeon pea
(
Cajanus cajan
L Millsp). Three species of
Trichoderma,
namely,
T. harzianum
(Th),
T.
virens
(Tr), and
T. viride
(Tv) and consortium of AMF (Myc; mixture of
Funneliformis
mosseae
,
Glomus cerebriforme
,
Rhizophagus irregularis
) individually (Th, Tr
,
Tv and Myc)
and in different combinations (Th+Myc,
Tr+Myc and Tv+Myc) were tested. Among all
the treatments, co-inoculation of Th and Myc gave h
ighest growth and reduced severity of
wilt disease of pigeon pea significantly (P< 0.05).
Myc
alone was sufficient for growth
promotion but it was effective in terms of disease
suppression when inoculated before
pathogen.
Fusarium
reduced the shoot length, dry weight, phosphorus (
P) uptake of
plants, AMF colonization, spore density, and popula
tion of
Trichoderma
. Results clearly
showed that different species of
Trichoderma
produced varied results with Myc.
Keywords
: Colony forming unit, Hyperparasitism, Phytoparasi
tism.
