Sokoine University of Agriculture

Response of rice to nitrogen and phosphorus applied to the dominant soil type at the Dakawa irrigation scheme, Morogoro Tanzania

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dc.contributor.author Mbaga, Halima Rashid
dc.date.accessioned 2017-02-06T13:42:04Z
dc.date.available 2017-02-06T13:42:04Z
dc.date.issued 2015
dc.identifier.uri http://www.suaire.sua.ac.tz/handle/123456789/1210
dc.description MSc Thesis en_US
dc.description.abstract A study was conducted to classify and establish the fertility status of the soil at the Dakawa Irrigation Scheme (DIS) and subsequent to this, a screen-house pot experimentwas conducted to assess the response of rice (variety TXD 306) to nitrogen and phosphorus applied to the dominant soil type at the DIS. According to the Soil Taxonomy and the World Reference Base for Soil Resources, the soil of the study area classified as Inceptisol and Cambisol, respectively. Based on physical, chemical and biological properties of composite soil sample, the soil hadlow total N, low OC, organic matter and exchangeable Ca and Mg,and hence rated as marginally to moderately suitable for rice production. For the response of rice (variety TXD 306)to N and P, rates adopted were0, 50, 100, 150, 200 kgNha -1 and 0, 40, 80, 120, 160 kgPha -1 , respectively. The sources of N and P used were(NH 4 ) 2 SO 4 ) and (Ca(H 2 PO 4 ) 2 ), respectively applied in 5 2 factorial in CRBD. The number of tillers increased significantly (P < 0.05) with N and P levels from P 0 N 0 kgha -1 to P 80 N 200 kgha -1 . Biomass weight (g) increased significantly (P < 0.05) from 10.99 g pot -1 to 93.04 g pot -1 at P 0 N 0 kgha -1 and P 160 N 200 kgha -1 , respectively. Grain yield(g) increased significantly (P <0.05) from 2.24 g pot -1 to 33.06 g pot -1 for absolute control and P 160 N 200 kgha -1 , respectively. Therefore, for optimum grain yield of TXD 306 for the DIS Cambisol,80 kgPha -1 should be applied as basal and N in two splits i.e. 100 kgNha -1 close to tillering and 100 kgNha -1 at panicle initiation.ForappropriateN and P recommendations,further studies should be conducted to take onboard the intergrated soil fertility management in rice cultivation based on soil types to allow extrapolation of the results to other similar soils. en_US
dc.description.sponsorship Allience for Green Revolution in Africa (AGRA) en_US
dc.language.iso en en_US
dc.publisher Sokoine University of Agriculture en_US
dc.subject Soil fertility en_US
dc.subject irrigation scheme en_US
dc.subject soil taxonomy en_US
dc.subject soil resources en_US
dc.subject soil type en_US
dc.subject Dakawa en_US
dc.subject Morogoro en_US
dc.subject rice production en_US
dc.title Response of rice to nitrogen and phosphorus applied to the dominant soil type at the Dakawa irrigation scheme, Morogoro Tanzania en_US
dc.type Thesis en_US


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