The Studies on Nodulation Behaviour in Leucaena leucocephala

The nodulation behaviour in different age group of Leucaene leucocephala K-28 was studied in detail. The number of nodules considerably increased with age. The culture of rhizobium enhanced the height growth of the seedlings in laborotory and nursery conditions. The height growth and survival percentage of Leucaene seedlings in the field trial plantations were more when the seedling stock for plantation was used from seedlings grown in polythene as compared to those directly transplanted from nursey beds. The application of nitrogen fertilizer (area) in potted mixture supressed the nodule formation. It has been found that rhizobium inoculation can boost up Ibe growth of nursery stock of L. leucoctphala by producing a healthy stock of high vigour for large scale plantation of Leucaena in silvipastrol systems and social forestry programmes.