Senna (Cassia angustifolia) is mainly used for the conservation of sandy soils. When sown senna holds the sand particles together. The decomposed roots of senna make a good compost. It can also be used for the improvement of black and muddy soil and for reducing the alkalinity of the soil.
Formulation: Senna (Cassia angustifolia)
Ingredients: Senna (Cassia angustifolia)
Carbon: nitrogen (
lignin: nitrogen (
L:N) ratios of organic substances primarily determine the N mineralization and its availability to crop plants. Two field experiments were conducted at Kitete Village, Morogoro, Tanzania in 1998-99 to assess the effects of different
L:N ratios of mixtures of Senna singueana foliage and local straw materials on decomposition and N mineralization for optimum N use efficiency of maize. Litterbags and the incubation methods were used for the studies. Residual mass, available mineral N, maize shoot height, N nutrient uptake and yield were measured. Senna leaves alone decomposed considerably fast with over 94% mass loss completed within the first 4 weeks of incubation. When these foliages were mixed with different proportions of local straw materials, however, the decomposition rate slowed down, with the mass loss percentage decreasing with increasing proportions of straw in the mixtures. The pattern of N released from Senna and straw manures closely resembled to the mass loss. The medium quality Senna-straw mixtures (
C: N ratio of 30:1 and
L: N ratio range of 2.7:1 to 4.5:1), optimally promoted the maize height growth from 160 to 248 cm and grain yield from 1.4 to 4.5 t ha-1." [J.B. Nduwayezu , L.L.L. Lulandala and S.A.O Chamshama , 2005. Managing Decomposition and Mineralization of Senna singueana (Del.) Lock. Manure to Improve N Use Efficiency and Maize Yield in Morogoro, Tanzania. Journal of Agronomy, 4: 349-359.