Liumba, Anastazia Mohammed Nassoro2025-02-062025-02-061999https://www.suaire.sua.ac.tz/handle/123456789/6548A dissertation submitted in partial fulfilment of the requirements for the degree of master of science in agricultureA study was conducted to examine the effect of high rates of nitrogen (N) and phosphorus (P) fertilizer application and longer harvesting periods on seed production, dry matter (DM) yield and chemical composition of Stylosanthes guianensis and Stylosanthes hamata at Morogoro. A split­ plot experimental layout design was used. Four levels of N (0,30,60 and 90kg/ha) and four levels of P (0,60,120 and 180kg/ha) were arranged factorially as main-plot treatment. Sub-plot treatments were harvesting periods, which were 50% flowering stage, 4 th 8 th 10th, 12th and 14 th week post 50% flowering stage. The results showed that both S.guianensis and S.hamata did (p<0.05)to N application in terms of seed yield and DM yield.Nitrogen application not respond significantly slightly increased CP% , IVDMD% and IVOMD% of S. guianensis. Phosphorus fertilizer application on the other hand, did not affect seed yield and DM yield of S. hamata and seed yield of S.guianensis whereas it increased DM yield of S.guianensis as the levels increased. The over all quality of herbage produced application. declined in both species with PenFertilizerLonger harvesting periodsSeed productionDry matter yieldChemical compositionHamataMorogoro.Thesis