Litterfall and its nutrient return in five oak species were studied in the mixed Oak forest in Senapati District, Manipur .Litter production was measured by litter trap method. The total annual litterfall was 958.9 g m -2 yr -1 .Leaf and non leaf litterfall comprises 76.7 % and 23.3 % of the total litterfall. Maximum litterfall was found in the month of ) and minimum in the month of July (23.7 g m -2 ). About 70% of the forest floor was replaced each year with turnover time of 1.42 yr. The amount of nutrient return through leaf litter was found to be maximum in Q. polystachya and minimum in C. indica. Nutrients (NPK) concentration of leaf litter of five different tree species was varied among different tree species.
In the present study four different types of organic solid wastes namely: sugarcane waste, fish waste, flower waste and pineapple waste were selected and amended in soil. Plantation of saplings of Solanum melongena were done in the amended soil and changes in the growth pattern, biomass and soil characteristics were observed by comparing with unamended pots. It was observed that amendment of flower waste leads to an overall increase in the productivity of crop. On an average there was an increase of 11.7cm in height, 13 number of leaves, 5cm in root length and 3.4 g of biomass in the flower waste amended pots. Sugarcane and fish wastes amendment did not show positive impact on the crop. Pineapple wastes showed positive change. Soil moisture, organic C and N increased in all types of amendments. Available K increased only in flower and pineapple wastes amendment. There was significant correlation between crop and soil characteristics showing faster release of K in flower waste led to an increase in production of the crop.
Fine root biomass and its nutrient concentration in different soil depths (0-10cm, 10-20cm and 20-30 cm) were studied in disturbed mixed Pine forest (forest site I) and undisturbed mixed oak forest (forest site II) at Senapati District, Manipur. Fine roots from both the study sites were collected by soil corer. Maximum fine root biomass were found in 1-10 cm (2037.80 gm -2 in forest site I and 2170.63 gm -2 in forest site II) throughout the year in both the study sites. Maximum fine root biomass was found in the month of December (205.65 gm -2 and 223.40 gm -2 in forest site I and site II respectively). The amount of nutrient (NPK) in fine roots varies in different soil depth in both the study sites throughout the year.
The paper deals 49 species of flowering plants belonging to 32 families which are reported as new records from Shiroy hills. Forest vegetation at the ranges of altitudes and a short description of the species, locality, date of collection, field number and altitude were described.
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