Abstract            Volume:10  Issue-2  Year-2022         Original Research Articles

Online ISSN : 2347 - 3215 Issues : 12 per year Publisher : Excellent Publishers Email : editorijcret@gmail.com

Phosphorus is often the limiting nutrient in a system and farming practices, by their very nature, remove P from the soil. As a result, P needs to be restored to maintain productivity. Plant available phosphorus levels can undergo gradual decline where losses through crop removal exceed input through fertilizers. Phosphorus is continuously taken up by maize from the seedling stage to maturity, with its maximum uptake during the third and sixth week of growth. Currently there are different types of inorganic phosphorus fertilizers sources are utilized for agricultural soil fertility to overcome the limitation of soil phosphorus deficient. The field experiment was conducted from 2016-2018 cropping years at MetuHurumu on maize crop to evaluate the effects of different phosphorus fertilizer sources with lime application on maize yield and soil chemical properties under acidic Nitisols soil. The treatments were arranged in split plot design with three replications. The treatments were consists of two lime rates as main plot and eight different phosphorus sources as sub plots Control, 2/3 Recommended P from(GPAPR 20 +Zn + B), Recommended P from (GPAPR 20 +Zn + B), 2/3 Recommended P from (MOHP +Zn +B), Recommended P from (MOHP +Zn +B), 2/3 Recommended P NAFAKA (NPK +CaO + S +MgO + Zn +B), Recommended P NAFAKA (NPK +CaO + S +MgO + Zn +B) and NPSZnB (positive control). Initial and after harvest soil sample was collected prepared and analysed based on standard soil laboratory procedures. The result revealed the combined three year (2016-2018) mean analysis data showed there was significant difference among lime and different phosphorus sources. The maximum grain yield 7036.80 kg/ha and biomass yield 17.38 ton/ha was recorded from the Lime*NPSZnB (positive control). There was also the maximum grain and biomass yield was obtained from different phosphorus sources under limed treated plots as compared with unlimed and negative control treatments but statically not significant. In general, from the evaluated different inorganic phosphorus fertilizer sources NPSZnB (positive control) with lime treated plot gave the maximum mean grain and biomass yield as well as enhanced the available phosphorus of soil.

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