Effects of Nitrogen and Phosphorus Micro-Doses on Maize Growth and Yield in a Sub-Humid Tropical Climate

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dc.contributor.authorSaidia, P.S
dc.contributor.authorRweyemamu, C.L
dc.contributor.authorAsch, F
dc.contributor.authorSemoka, J.M.R
dc.contributor.authorKimaro, A.A
dc.contributor.authorGermer, J
dc.contributor.authorGraef, F
dc.contributor.authorLagweni, P
dc.contributor.authorKahimba, F
dc.contributor.authorChilagane, E.A
dc.date.accessioned2021-07-28T13:23:59Z
dc.date.available2021-07-28T13:23:59Z
dc.date.issued2018
dc.description.abstractInadequate knowledge on fertilizer usage and poor financial resources are among the reasons for low maize productivity under small-scale farming. Fertilizer micro-dosing may increase food production by using low rates which are affordable by most resource poor farmers and have a high investment return. A two-year field experiment was conducted on sandy loam and sandy clay soils being typical representatives of sub-humid tropical agroecological zones. A split-plot design involved di-ammonium phosphate (DAP), Minjingu mazao (MM) and triple super phosphate (TSP) as main plots and fertilizer micro-dose rates of 10 kg N and 5 kg P/ha, 20 kg N and 10 kg P/ha, 40 kg N and 20 kg P/ha, 60 kg N and 30 kg P/ha, recommended rate 80 kg N and 40 kg P ha-1 and control as sub-plots. Phosphate fertilizers that produced highest grain yield were MM (2317 kg/ha), followed by DAP (2173 kg/ha) and TSP (2115 kg/ha). Fertilizer micro dose rates (10 kg N and 5 kg P/ha; 20 kg N and 10 kg P/ha) increased the yield by 90.5 and 136.6% from 1012 kg/ha in control, respectively. Intermediate rates (40 kg N and 20 kg P/ha) and (60 kg N and 30 kg P/ha) produced average grain yields of 2629 and 2647 kg/ha while the recommended rate produced 2601 kg/ha. The highest grain yield was 3910 kg/ha from MM at 40 kg N and 20 kg P/ha. Considering the micro-dose options therefore, MM fertilizer and micro dose rates (10 kg N and 5 kg P/ha) and (20 kg N and 20 kg P/ha) are recommended in these agro-ecological zones.en_US
dc.identifier.issn0976-1233
dc.identifier.urihttps://www.suaire.sua.ac.tz/handle/123456789/3791
dc.language.isoenen_US
dc.subjectFertilizer micro-dosingen_US
dc.subjectGrowth analysis characteristicsen_US
dc.subjectPhosphate fertilizersen_US
dc.subjectRecommended fertilizeren_US
dc.subjectRelative agronomic effectivenessen_US
dc.titleEffects of Nitrogen and Phosphorus Micro-Doses on Maize Growth and Yield in a Sub-Humid Tropical Climateen_US
dc.typeArticleen_US

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