during 2020-21 to observe the effect of incubation duration of organic manures on chemical properties viz. pH, electrical conductivity (EC), soil organic carbon (SOC), available nitrogen, phosphorus and potassium. The experiment was laid out in a complete randomized block design (CRD) with three replication and seven treatments. The treatment comprised of (T1) soil + FYM @ 10 t ha -1 , (T2) soil + Vermicompost @ 5 t ha -1 , (T3) soil + Poultry manure @ 5 t ha -1 , (T4) soil + Press mud compost @ 5 t ha -1 , (T5) soil + Goat manure @ 5 t ha -1 , (T6) soil + Urban compost @ 10 t ha -1 and (T7) absolute control. Results indicated that incorporation of organic manures to soil significantly influenced soil properties. The effects of organic manures on soil varied with manure type and incubation period. The application of FYM @ 10 t ha -1 recorded significantly lower pH (7.73). However, the treatment vermicompost @ 5 t ha -1 was at par with treatment FYM @ 10 t ha -1 . The significantly highest EC was recorded with the application of press mud compost @ 5 t ha -1 (1.22 dS m -1 ). The application of poultry manure significantly influenced soil available N, P and K content. The organic carbon content significantly increased at 15 days of incubation and further decreased from 30 days of incubation. The highest organic carbon content was observed with application of FYM @ 10 t ha -1 (0.68% at 15 days of incubation).

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A long-term field experiment initiated in the year 2018-19, was selected for conduct of present study in order to determine the effect of different bamboo species on growth attributing characters after 2 nd year of bamboo plantation grown on Entisol of semi-arid climate during the year 2020-21. The treatment of Bambusa tulda recorded highest number of culms per clump (59.32), culm density (49413.56 culms ha -1 ), number of new culms per clump (13.80) and clump girth (717.27 cm) over rest of tested bamboo species. Whereas, bamboo species Dendrocalamus strictus recorded highest culm height (6.39 m), basal diameter of culm (8.16 cm), Diameter at breast height (7.13 cm), culm girth at 5 th internode (16.53 cm) and internodal length (27.51 cm) as compared to other bamboo species. The treatment of Bambusa bamboos recorded highest number of internodes per culm (28.34). From the present study it is clear that tested bamboo species showed significant variation in growth attributing characteristics among themselves after 2 nd year of plantation grown on Entisol of semi-arid climate.

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