Sustainability · 2018 · 19 citations · 42 references
AgricultureAgronomySoil SciencesNutrient ManagementSoil FertilitySoil ScienceMineral Nutrient EnhancementNutrient Retention In SoilsPlant-soil Nutrient InteractionsSoil Chemical PropertiesSoil Fertility EvaluationSoil PhAvailable Soil PhosphorusBiochar Amended LitterBiochar AmendmentsBiochar For Nutrient RetentionElectrical Conductivity EnhancementPhosphorus Uptake EnhancementSoil Ph Effects On Nutrient AvailabilitySoil Properties
Poultry-litter biochars (PLBs), which were prepared at two pyrolytic temperatures, were applied to the soils of croplands with four consecutive harvests of water spinach to assess the effects of PLBs on the soil properties and the growth of water spinach. The results show that PLB amendment resulted in an increase of soil pH. The electrical conductivity values, and the concentrations of extractable inorganic nitrogen, exchangeable potassium, and available phosphorus in the soils drastically increased in the 0.5% and 1% biochar-amended soils. However, most of the significant changes due to PLB amendment disappeared after four consecutive harvests of water spinach. The growth of water spinach was enhanced in the soils amended with PLBs, especially the one prepared at 350 °C. Nonetheless, the application of 1% PLBs to the soil resulted in an imbalance between calcium and magnesium in water spinach.
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Johannes Lehmann, José Pereira da Silva, Christoph Steiner et al. · Plant and Soil · 2003 · 1.9K citations