Response of lowland rice (oryza saliva l.) varieties to nitrogen, phosphorus, potassium and zinc in two soil types in Kibaha district

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dc.contributor.authorMbelle, Happiness Phillo
dc.date.accessioned2026-05-13T13:49:21Z
dc.date.available2026-05-13T13:49:21Z
dc.date.issued2015
dc.descriptionDissertation
dc.description.abstractA study was conducted during 2011/2012 growing season at Mlandizi and Kitomondo villages in Kibaha District, to determine the response of lowland rice varieties to N, P, K and Zn in two soil types. The nutrient treatment levels were as follow; Niso + P40 +K100 + Ziiio. N150 + P.10 +K100 + Zno, Niso + P40 +Ko + Zno, Nioo + Po +Ko + Zno , N75 + P20 +Ko + Ziio. No -I- P30 +K0 + Zno and No + Po +K0 + Zno as a control. Rice varieties used were SARO5, NERICA and SUPA. The fertility status of the soils for rice production at two experimental sites was evaluated. Generally, based on soil texture, the two sites are suitable for lowland rice production but deficiencies of N, P, K and Zn were identified. Prior to seeding, a basal application of P at the rates of 0, 20, 30, and 40 kg P/ha was applied. The amount of K applied was 100 kg K/ha whereas, 10g of Zinc Sulphate (ZnS04) was used. Nitrogen in the form of Urea (46% N) at rates of 0, 75, 100 and 150 kg N/ha was applied into two splits as follows: one split applied 21 days after sowing , and the second split was applied at panicle initiation stage (42-45 days after sowing). Field experiments indicated that the application of N, P, K and Zn increased rice yield from 2.05 (in control) to 6.863 t ha’1 (N150 + P40 +Kioo + Znio) in Mlandizi and 2.00 (in control) to 7.20 t ha’1 (N150 + P40 +K100 + Znio) in Kitomondo site. The yield increases were due to increased availability and uptake of plant nutrients particularly N, P. K and Zn. Based on the generalized yield data it was thus recommended that fertilizer level of N150P40K100Znl0 in Kibaha District should be adopted to achieve high rice yield. Further the results indicated that moisture was another limiting factor to rice yield, hence short to medium maturing varieties (SARO5 and NERICA) were recommended.
dc.description.sponsorshipBelgian Technical Co-operative (BTC)
dc.identifier.urihttps://www.suaire.sua.ac.tz/handle/20.500.14820/7566
dc.language.isoen
dc.publisherSokoine University of Agriculture
dc.subjectLowland rice
dc.subjectPhosphorus
dc.subjectPotassium
dc.subjectZinc
dc.subjectKibaha
dc.titleResponse of lowland rice (oryza saliva l.) varieties to nitrogen, phosphorus, potassium and zinc in two soil types in Kibaha district
dc.typeThesis

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