Bhol, NirakarRout, Chandan Kumar2024-12-052024-12-052022-06-07https://krishikosh.egranth.ac.in/handle/1/5810216910An investigation entitled “Crown architecture, growth and yield of promising Eucalyptus clones for farm forestry” was conducted at clonal plantation area of JK paper mill Rayagada as well as in college of Forestry, OUAT, Bhubaneswar during 2021-22.The experiment was consisting of 15 clones of eucalyptus and laid out in RBD with three replications. The clones were planted at a spacing of 3.0m X 1.5m in 2013 at JK paper mill, Rayagada. The plantation area comes under North-Eastern Ghat agroclimatic zones of Odisha. The laboratory works were carried out at College of Forestry, OUAT, Bhubaneswar. After eight years of establishment, it was found that clone JKSC-ECD and CPM-2070 recorded highest height (23.37 m) and CPM-2313 was recorded with lowest height (17.93 m). As regards to crown height JKSC-BP6 possessed highest crown height (13.39 m) while EC larariver secured the lowest crown height (7.33 m). JKSC-ECD produced crown on maximum length (12.83m) whereas IFGTB-4 produced crown of minimum length (5.93m). In case of crown length to total height ratio, JKSC-ECU registered highest value (0.57) whereas IFGTB-4 (0.32) registered lowest. As regards to crown area, there was no significant variation. It varied from (3.82m) to (4.39m). As regards to angle of branching of primary branches in 8 years MPM-MU8P registered significantly higher value over others (40.67o) while MPM-225 produced branches of minimum angle (17.67o). In case of number of primary branches, JKSC-ECD witnessed maximum number of branches (40.33) and IFGTB-4 registered minimum no of primary branches (13.67). JKPM-2135 intercepted highest light (78.96 %) whereas CTA-7.2 intercepted lowest (45.24 %). At the age of 8 years of plantation, it was observed that the shape of crown in all clones was nearly cylindrical. JKSC-ECD secured maximum DBH (19.00 cm) whereas CPM-288 achieved minimum DBH (11.57 cm). The highest MAI of DBH was registered by JKSC-ECD (2.38cm) whereas the lowest value was recorded in CPM-288(1.44cm). JKSC-ECD witnessed the highest height growth (2.92 m) whereas exhibited lowest height growth (2.30m) per annum. CPM-288 exhibited maximum bark thickness (2.48cm) and CTA-7.2 possessed lowest bark thickness (1.23cm). JKSC-ECD produced highest diameter under bark (16.22cm) while CPM-288 produced least diameter under bark (4.70cm). EC larariver produced highest stem form (0.78) and JKSC-ECD produced lowest stem form (0.68). In case of biomass of stem, branch, leaf and bark JKSC-ECD was highest and IFGTB-4 was lowest. Similarly JKSC-ECD stored maximum carbon in stem, branch, leaf and bark whereas IFGTB-4 stored lowest. In case of nutrient content in leaf JKSC-ECD stored highest whereas IFGTB-4 stored lowest. JKSC-ECD had highest cellulose and lowest lignin content. From overall point of view JKSC-ECD clone may be considered as the best among the 15 clone tested.EnglishThesis