| Abstrak/Abstract |
Coastal soils have typical properties for categorization as marginal land for plant growth. Addition of plant residue is expected to improve the conditions of coastal soils to support the growth of agricultural crops and is able to help dissolve the alkaline cations required by plants with organic acids produced by their decom-position process. This research aimed to establish the influence of agricultural plant residue input on dissolved base cations in two types of coastal land use. This research was conducted in a completely randomized design with types of plant resi-due as a factor. The types of land use in coastal areas consisted of home gardens and cropland. The types of input plant residue consisted of Sembung shrub (Sphaeranthus africanus. L), corn, paddy, and peanut. The treatment was repeated three times and observations were done twice: at 30 day and 90 day. Input of peanut residue into the cropland soil gave the greatest amount of soil dissolved calcium and magnesium during the incubation period of 30 day and provided the greatest amount of dis-solved calcium in the incubation period of 90 day. Input of Sembung shrub into cropland soil gave the highest value for dissolved potassium in the incubation period of 30 day, while in the 90 day incubation period, Sembung shrub input provided the highest C:N ratio and soil dissolved potassium value |
