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Christophe, S., Jean-Christophe, A., Annabelle, L., Alain, O., Marion, P. and Anne-Sophie, V. (2011) Plant N Fluxes and Modulation by Nitrogen, Heat, and Water Stress: A Review Based on Comparison of Legumes and Nonlegume Plants. In: Shanker, A. and Venkateswarlu, B., Eds., Abiotic Stress in Plants-Mechanisms and Adaptations, IntechOpen, Rijeka, 79-118. https://doi.org/10.5772/23474

has been cited by the following article:

• TITLE: Evaluation of Soil Mineral Nitrogen under Different Organic and Inorganic Fertilization in Central Kenya

  AUTHORS: Josephat Murunga Mungoche, Moses Moywaywa Nyangito, Oscar Kipchirchir Koech

  KEYWORDS: Nitrogen Fertilizers, Mineral N, Organic Fertilizers, Inorganic Fertilizers

  JOURNAL NAME: Open Access Library Journal, Vol.10 No.12, December 27, 2023

  ABSTRACT: As part of an agricultural intensification strategy to increase livestock feed productivity, an agronomic trial was set up in Central, Kenya. The agronomic trial followed a Randomized Complete Block Design (RCBD) with three replicate plots measuring 4 meters by 2 meters per treatment. The treatments comprised of NPK fertilizer, Farmyard Manure (FYM), Farm Yard Manure + Biochar (FYM-BC), Bioslurry (all at 45 kg N·ha-1), Lablab intercropping (Biological Nitrogen Fixation), and Control treatment (no fertilizer). GenStat Statistical analysis of variance among the treatment means significantly influenced ammonium (NH4+) and nitrate (NO3-) availability in the soil (p 4+ concentration was recorded under NPK (21.20 ± 27.01 μg·g-1 dry matter (D.M.), while the lowest NH4+ concentration was recorded under Lablab treatment (6.62 ± 8.02 μg·g-1 D.M.). Like NH4+, significantly higher (61.41 ± 38.83 μg·g-1 D.M.) NO3- concentration was observed under NPK plots, while the lowest concentration (37.09 ± 25.15 μg·g-1 D.M.) was recorded under Lablab. These findings indicate that NPK releases plant-available mineral N faster than organic fertilizers, which could lead to faster plant growth and higher N leaching losses compared to the slow-release organic fertilizers.