TY  - BOOK
AU  - Harikrishnan Nair G 
AU  - Asokan P K (Guide)
TI  - Growth and Nodulation Characteristics of Selected Indigenous Tree Legumes
U1  - 634.9 
PY  - 1997///
CY  - Vellanikkara
PB  - Department of Tree Physiology and Breeding, College of Forestry
N2  - An investigation was carried out to study the nodulation characteristics of seven 
Indigenous/ naturalized tree legumes in Trichur district of Kerala State. The 
homesteads of five selected panchayats viz. Pananchery, Madakkathara, Nadathara, 
Puthur and Ollukkara of the district were surveyed to assess the natural nodulation and 
to collect nodules for isolating Rhizobium.• The response of these tree legumes to 
	. 	. 
inoculation with local isolates and commercial cultures of Rhizobium were done by 
seed inoculation and growing the seedlings in a glass house. In a separate 
experiment, the soil collected from the base of the nodulating tree were also evaluated 
as an inoculant. The inoculation studies were laid out in CRD with ten replications. 
The study revealed that, among the seven tree species investigated, five, 
viz., Albizia lebbeck L. (Nenmeni vaka) , Dalbergia latifolia Roxb. (Rosewood/Veeti), 
Erythrina stricta Roxb. (Mullumurukku), Pongamia pinnata (L.) Pierre (Ungu) and 
Pterocarpus marsupium Roxb. (Venga) were nodulating in their natural stand. In the 
other two viz., Adenanthera pavonina L. (Manchadi), Tamarindus indica L. (Tamarind) 
nodules were absent. The largest size nodules were found in the case of E. stricta 
and the smallest in D. latifolia. Regarding the shape, all nodulating species had round 
nodules except for A. lebbeck which had coralloid nodules. The Rhizobium isolates 
obtained from all the species showed growth in YEMA medium within 3-4 days, which 
indicates that, they are fast growing type. 
 
The promising Rhizobium isolate/commercial cultures identified were TAL -169 
and DTA1 for D. lallfolia. TAL-749 and ETR, for E. stricta;  P0 TR5 and Po TR3 
for P. pinnata; GR-H and NBL for A. lebbeck. Inoculation with the various 
isolates/commercial isolates showed no response in P. marsupium. Soil used as an 
inoculant to induce nodulation was found to be unsuccessful in all the selected tree 
legumes. 


UR  - http://krishikosh.egranth.ac.in/handle/1/5810140037
ER  -