Managing phosphate rock to improve nutrient uptake, phosphorus use efficiency, and carrot yields

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cg.authorship.typesCGIAR and developing country instituteen
cg.contributor.affiliationJomo Kenyatta University of Agriculture and Technologyen
cg.contributor.affiliationInternational Centre of Insect Physiology and Ecologyen
cg.contributor.affiliationInternational Institute of Tropical Agricultureen
cg.contributor.donorBiovision Foundationen
cg.contributor.donorSwiss Coop Sustainability Funden
cg.contributor.donorLiechtenstein Development Serviceen
cg.contributor.donorSwiss Agency for Development and Cooperationen
cg.coverage.countryKenya
cg.coverage.iso3166-alpha2KE
cg.coverage.regionAfrica
cg.coverage.regionEastern Africa
cg.creator.identifierKomi Fiaboe: 0000-0001-5113-2159
cg.howPublishedFormally Publisheden
cg.identifier.doihttps://doi.org/10.1007/s42729-020-00217-xen
cg.identifier.iitathemeNATURAL RESOURCE MANAGEMENT
cg.isijournalISI Journalen
cg.issn0718-9508en
cg.issue3en
cg.journalJournal of Soil Science and Plant Nutritionen
cg.reviewStatusPeer Reviewen
cg.subject.iitaAGRONOMYen
cg.subject.iitaFARMING SYSTEMSen
cg.subject.iitaFOOD SECURITYen
cg.subject.iitaNATURAL RESOURCE MANAGEMENTen
cg.subject.iitaPLANT PRODUCTIONen
cg.subject.iitaSOIL FERTILITYen
cg.volume20en
dc.contributor.authorMwangi, E.en
dc.contributor.authorNgamau, C.en
dc.contributor.authorWesonga, J.M.en
dc.contributor.authorKaranja, E.en
dc.contributor.authorMusyoka, M.W.en
dc.contributor.authorMatheri, F.en
dc.contributor.authorFiaboe, K.en
dc.contributor.authorBautze, D.en
dc.contributor.authorAdamtey, N.en
dc.date.accessioned2020-07-17T10:49:18Zen
dc.date.available2020-07-17T10:49:18Zen
dc.identifier.urihttps://hdl.handle.net/10568/108805
dc.titleManaging phosphate rock to improve nutrient uptake, phosphorus use efficiency, and carrot yieldsen
dcterms.abstractThe objectives of this study were to assess (a) the efficiency of lemon and pineapple juices and the concentration and time needed to release more than 50% of available phosphorus from phosphate rock (PR), and (b) the effect of different types of PR management on carrot yields, nutrient uptake, and phosphorus use efficiency. Field trials were set up at two sites with humic andosols and orthic acrisols over two seasons in Kenya. In a randomized complete block design, replicated three times, the following treatments were compared: (i) composted dissolved PR in lemon juice; (ii) powdered PR composted; (iii) dissolved PR in lemon juice added to compost; (iv) powdered PR and compost; (v) triple superphosphate and compost; (vi) compost alone; (vii) triple superphosphate and Tithonia diversifolia mulch; with (viii) un-amended soil as a control. Lemon juice was effective in solubilizing PR, releasing 63% of the total phosphorus applied into available phosphorus, compared to 11% for pineapple juice and 6% for water. The combined application of compost and PR dissolved in lemon juice at planting significantly increased phosphorus and potassium uptake, phosphorus use efficiency, and carrot yields that was comparable to the use of triple superphosphate and compost. The study concludes that the dissolution of phosphate rock with lemon juice at a ratio of 1:5 phosphate rock to lemon juice and its combined application (immediately after dissolution) with compost at planting improves nutrient uptake, phosphorus use efficiency, and crop yields. We recommend further studies to explore the possibility of using citrus peels or other acidic organic materials to enhance the solubility of phosphate rock, and to assess their practical feasibility and the economic advantage(s) in the large-scale production of high value crops.en
dcterms.accessRightsLimited Access
dcterms.audienceScientistsen
dcterms.available2020-04-08
dcterms.bibliographicCitationMwangi, E., Ngamau, C., Wesonga, J., Karanja, E., Musyoka, M., Matheri, F., ... & Adamtey, N. (2020). Managing phosphate rock to improve nutrient uptake, phosphorus use efficiency, and carrot yields. Journal of Soil Science and Plant Nutrition, 1-16.en
dcterms.extentp. 1350-1365en
dcterms.issued2020-04-08
dcterms.languageen
dcterms.licenseCopyrighted; all rights reserved
dcterms.publisherSpringeren
dcterms.subjectphosphorusen
dcterms.subjectmanagementen
dcterms.subjectrock phosphateen
dcterms.subjectdissolvingen
dcterms.subjectnutrient uptakeen
dcterms.typeJournal Article

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