Assessment of maize response to Minjingu phosphate rock and triple superphosphate applied under different P-application strategies in a Ferralsol in Tanzania

Phosphorus undergoes many reactions in acid soils, most of which convert it to less-available forms. There is a need to search for P source and P-application strategies that minimize the unfavourable reactions and optimize the benefits derived from P application. A field experiment was conducted in...

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Bibliographic Details
Published in:Archiv für Acker- und Pflanzenbau und Bodenkunde 2013-10, Vol.59 (10), p.1323-1338
Main Authors: Mtengeti, Eva E., Semoka, Johnson M.R., Maliondo, Salim M.
Format: Article
Language:English
Subjects:
Conferences
Experiments
Ferralsols
Fertilizers
maize
phosphorus
recapitalization
seasonal
Soil sciences
standard rate
strategies
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Summary:Phosphorus undergoes many reactions in acid soils, most of which convert it to less-available forms. There is a need to search for P source and P-application strategies that minimize the unfavourable reactions and optimize the benefits derived from P application. A field experiment was conducted in a Ferralsol for three years (2004-2006) to compare the effectiveness of Minjingu phosphate rock (MPR) with triple superphosphate (TSP) as assessed by maize response. The same experiment compared two P application strategies, i.e. P recapitalization and seasonal P application strategy, and two P rates, namely a standard P rate (SPR) and half of the SPR. The experiment followed a randomized complete block design with nine treatments replicated four times. Both P sources increased yields, nutrient P and Ca uptake significantly (p 
ISSN:0365-0340
1476-3567
DOI:10.1080/03650340.2012.721540