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EFFECT OF TIME OF AZOLLA INCORPORATION AND INORGANIC FERTILIZER APPLICATION ON GROWTH AND YIELD OF BASMATI RICE

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dc.contributor.author W. A. Oyange, George N. Chemining’wa , J. I. Kanya and P. N. Njiruh
dc.date.accessioned 2022-02-25T09:14:26Z
dc.date.available 2022-02-25T09:14:26Z
dc.date.issued 2021-02
dc.identifier.issn 1991-637X
dc.identifier.uri http://repository.tuc.ac.ke:8080/xmlui/handle/123456789/485
dc.description.abstract Azolla 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 biomass applied at transplanting, 7.5 t ha-1 Azolla applied at 21 days after transplanting (DAT) and 30 kg N 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 -2 , 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-1 . However, percentage grain filling was reduced. The effect of interaction between Azolla application and inorganic N was significant on spikelets panicle-1 and grain weight. Observations therefore indicate that the effect of Azolla on yield and yield components was more when incorporated at transplanting. en_US
dc.language.iso en en_US
dc.publisher African Journal of Agricultural Research en_US
dc.subject Azolla, incorporation time, inorganic fertilizer, rice yields en_US
dc.title EFFECT OF TIME OF AZOLLA INCORPORATION AND INORGANIC FERTILIZER APPLICATION ON GROWTH AND YIELD OF BASMATI RICE en_US
dc.type Article en_US


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