Effect of time of Azolla incorporation and inorganic fertilizer application on growth and yield of Basmati rice

dc.contributor.authorOyange, W. A.
dc.contributor.authorChemining’wa, G. N.
dc.contributor.authorKanya, J. I.
dc.contributor.authorNjiruh, Nthakanio P.
dc.date.accessioned2020-06-23T07:24:23Z
dc.date.available2020-06-23T07:24:23Z
dc.date.issued2020-03
dc.descriptionDOI: 10.5897/AJAR2019.14456en_US
dc.description.abstractAzolla tissue contains 5% N, which is slowly released into the soil upon decomposition. Timing of incorporation is therefore important for maximum benefit to a crop. The effect of time to incorporate Azolla biomass on growth and yield of rice was investigated in Mwea-Kenya. Treatments consisted of 7.5 t ha -1 Azolla applied at 21 days after transplanting (DAT) and 30 kg N ha Azolla biomass applied at transplanting, 7.5 t ha -1 inorganic N applied in splits at O, 21 and at 55 DAT. There were control treatments without Azolla and without inorganic N application. The treatments were laid out in a Randomized Complete Block Design (RCBD) with three replications. Phosphorus and potassium were applied at 50 Kg ha -1 each as P2O5 and K2O. Plant height and tiller numbers were recorded at 21 (rooting/tillering), 32 (tillering), 42 (maximum tillering), 60 (flowering) and 75 DAT (heading) while yield parameters were determined at physiological maturity (120 DAT). Data were analysed using SAS software and means separated using the least significant difference test (p≤0.05). Azolla incorporation at transplanting significantly enhanced panicle m -1 , grain weight and grain yield while incorporating it at 21 DAT only significantly enhanced panicle m -2 . Higher environmental temperatures enhanced Azolla effect. The effect of Inorganic N significantly increased plant height, tiller number, grain weight and spikelets panicle -2 -1 . However, percentage grain filling was reduced. The effect of interaction between Azolla application and inorganic N was significant on spikelets panicle and grain weight. Observations therefore indicate that the effect of Azolla on yield and yield components was more when incorporated at transplaen_US
dc.identifier.citationAfrican Journal of Agricultural Research Vol. 15(3), pp. 464-472, March, 2020en_US
dc.identifier.issn1991-637X
dc.identifier.urihttp://repository.embuni.ac.ke/handle/embuni/2374
dc.language.isoenen_US
dc.publisherAcademic Journalsen_US
dc.subjectAzollaen_US
dc.subjectincorporation timeen_US
dc.subjectinorganic fertilizeren_US
dc.subjectrice yieldsen_US
dc.titleEffect of time of Azolla incorporation and inorganic fertilizer application on growth and yield of Basmati riceen_US
dc.typeArticleen_US
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