Journal of Plant Nutrition and Soil Science
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Comparison of urease inhibitor N‐(n‐butyl) thiophosphoric triamide and oxidized charcoal for conserving urea‐N in soilAbstract Charcoal‐based amendments have a potential use in controlling NH3 volatilization from urea fertilization, owing to a high cation‐exchange capacity (CEC) that enhances the retention of NH
$ _4^+ $ . An incubation study was conducted to evaluate the potential of oxidized charcoal (OCh) for controlling soil transformations of urea‐N, in comparison to urease inhibition by N‐(n‐butyl) thiophosphoric triamide (NBPT). Four soils, ranging widely in texture and CEC, were incubated aerobically for 0, 1, 3, 7, and 14 d after application of 15 N‐labeled urea with or without OCh (150 g kg−1 fertilizer) or NBPT (0.5 g kg−1 fertilizer), and analyses were performed to determine residual urea and 15 N recovery as volatilized NH3 , mineral N (as exchangeable NH
$ _4^+ $ , NO
$ _3^ - $ , and NO
$ _2^ - $ ), and immobilized organic N. The OCh amendment reduced NH3 volatilization by up to 12% but had no effect on urea hydrolysis, NH
$ _4^+ $ and NO
$ _3^ - $ concentrations, NO
$ _2^ - $ accumulation, or immobilization. In contrast, the use of NBPT to inhibit urea hydrolysis was markedly effective for moderating the accumulation of NH
$ _4^+ $ , which reduced immobilization and also controlled NH3 toxicity to nitrifying microorganisms that otherwise caused the accumulation of NO
$ _2^ - $ instead of NO
$ _3^ - $ hiện toàn bộ
Journal of Plant Nutrition and Soil Science - Tập 179 Số 4 - Trang 520-528 - 2016
Nitrogen and genotype effects on root growth and root survivorship of spring wheatAbstract The nitrogen (N) fertilization of wheat (Triticum aestivum L.) is important for stable and high grain yield. However, the effect of N on root growth and survivorship is poorly understood. The objectives of this study were (1) to determine the effect of varying N availability on the growth and survivorship of roots and (2) to deter... ...
Journal of Plant Nutrition and Soil Science - Tập 176 Số 4 - Trang 561-571 - 2013
Innovative methods in soil phosphorus research: A reviewAbstract Phosphorus (P) is an indispensable element for all life on Earth and, during the past decade, concerns about the future of its global supply have stimulated much research on soil P and method development. This review provides an overview of advanced state‐of‐the‐art methods currently used in soil P research. These involve bulk and spatially resolved spectro... ...
Journal of Plant Nutrition and Soil Science - Tập 178 Số 1 - Trang 43-88 - 2015
Phosphorus bioavailability of biochars produced by thermo‐chemical conversionAbstract Recycling of P is a common strategy in efficient use of P. The aims of our investigation were to study the P extractability of biochars produced by low temperature conversion and to determine the effect of soda application on low‐temperature conversion of organic compounds and the bioavailability of P to rye grass (Lolium perenne ... ...
Journal of Plant Nutrition and Soil Science - Tập 177 Số 1 - Trang 84-90 - 2014
Pharmaceutical antibiotic compounds in soils – a reviewAbstract Antibiotics are highly effective, bioactive substances. As a result of their consumption, excretion, and persistence, they are disseminated mostly via excrements and enter the soils and other environmental compartments. Resulting residual concentrations in soils range from a few μg upto g kg–1 and correspond to those found for pesticide... ...
Journal of Plant Nutrition and Soil Science - Tập 166 Số 2 - Trang 145-167 - 2003
Improving potassium acquisition and utilisation by crop plantsAbstract To avoid loss of yield, crops must maintain tissue potassium (K) concentrations above 5–40 mg K (g DM)–1 . The supply of K from the soil is often insufficient to meet this demand and, in many agricultural systems, K fertilisers are applied to crops. However, K fertilisers are expensive. There is interest, therefore, in reducing applicati... ...
Journal of Plant Nutrition and Soil Science - Tập 176 Số 3 - Trang 305-316 - 2013
Stabilization mechanisms of organic matter in four temperate soils: Development and application of a conceptual modelAbstract Based on recent findings in the literature, we developed a process‐oriented conceptual model that integrates all three process groups of organic matter (OM) stabilization in soils namely (1) selective preservation of recalcitrant compounds, (2) spatial inaccessibility to decomposer organisms, and (3) interactions of OM with minerals and metal ions. The mode... ...
Journal of Plant Nutrition and Soil Science - Tập 171 Số 1 - Trang 111-124 - 2008
Isolation and identification of rapeseed (Brassica napus) cultivars for potential higher and lower Cd accumulationAbstract Cadmium (Cd) as a non‐essential toxic metal has become one of the seriously environmental problems. Overload of Cd into plant shoots, particularly the addible parts (i.e ., grains), jeopardizes crop production and food safety. Isolating and identifying genotypic variations in Cd accumulation of rapeseed (Brassica napus... ...
Journal of Plant Nutrition and Soil Science - Tập 181 Số 4 - Trang 479-487 - 2018
How does sample preparation affect the δ15N values of terrestrial ecological materials?
Journal of Plant Nutrition and Soil Science - Tập 172 Số 4 - Trang 461-463 - 2009
Effects of hydrochar application on the dynamics of soluble nitrogen in soils and on plant availabilityAbstract Before hydrochars can be applied as soil amendments in agriculture, information about how hydrochar application affects soil nutrient cycles and plant growth are necessary. In this study, incubation experiments were performed to investigate hydrochar effects on N concentrations (NO$ _3^- $ hiện toàn bộ
Journal of Plant Nutrition and Soil Science - Tập 177 Số 1 - Trang 48-58 - 2014
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