Effects of sludge on germination and initial growth performance of Leucaena leucocephala seedlings in the nursery

研究被执行决定污泥的不同类型的影响(市政，工业；居住) 在地萌芽上，生长；L 的生节。在托儿所的 leucocephala 幼苗。在种子播种前，污泥的不同联合与滋养的缺乏的自然森林土被合并。领域萌芽，生节地位；幼苗的物理生长参数(射击；根长度，活力索引，领子直径，叶数字，新鲜；弄干射击的重量；根；全部的干燥生物资源增长) 在三以后被记录；六月种子播种。地萌芽，生节地位；生长参数在与控制相比与污泥修改的土壤显著地被改变。小瘤的最高的数字从与居住污泥(1:1 ) 修改的土壤被记录；最高新鲜；干燥小瘤重量也在三从一样的联合被发现；六个月旧的幼苗。在生长参数的情况下，最高的生长从土壤被记录；与控制相比的居住污泥(1:1 ) 联合。从学习，与居住污泥(1:1 ) 修改的土壤提供更好的地萌芽，这能被推荐，生长；L 的小瘤形成。在降级的土壤的 leucocephala。

A study was carried out to determine the influence of different types of sludges （municipal, industrial and residential） on field germination, growth and nodulation of L. leucocephala seedlings in the nursery. Before sowing of seeds, different combinations of sludges were incorporated with the nutrient deficient natural forest soils. Field germination, nodulation status and physical growth parameters of seedlings （shoot and root length, vigor index, collar diameter, leaf number, fresh and dry weight of shoot and root and total dry biomass increment） were recorded after three and six months of seed sowing. Field germination, nodulation status and growth parameters were varied significantly in the soil amended with sludges in comparison to control. The highest number of nodule was recorded from soil amended with residential sludge （ 1：1 ） and highest fresh and dry nodule weight was also found from the same combination in both three and six month old seedlings. In case of growth parameters, the highest growth was recorded from soil and residential sludge （ 1：1 ） combination compared to control. From the study, it can be recommended that soil amended with residential sludge （ 1：1 ） provide better field germination, growth and nodule formation of L. leucocephala in degraded soil.