Phosphate fertilization strategies and placement effects on grain crop yields in subtropical no-till Oxisols
Andria Paula Lima 
, Sandra Mara Vieira Fontoura , Renato Paulo de Moraes , Cimélio Bayer , Luke Gatiboni , Tales Tiecher
06/Aug/2025
ABSTRACT Subtropical Oxisols have a high phosphate adsorption capacity and consequently lower phosphorus (P) availability. Therefore, correct management of phosphate fertilization in grain crop rotations is essential to increase the P-use efficiency and minimize potential environmental impacts. This study aimed to evaluate, in soils with medium and high initial P level, fertilization strategies (crop and system fertilization) and placement’s effects (banded P and broadcast) on soil available P, crop yield, and P use efficiency. Two field trials were installed on […]
Using the 15N natural abundance for a quantitative approach to N recovery from organic fertilizers
Caio Teves Inácio , Segundo Urquiaga , Phillip Michael Chalk
30/Jun/2025
ABSTRACT The influence of organic inputs, such as manure and compost, on the 15N values of growing plants suggests it may be possible to use of 15N natural abundance (NA) as a nitrogen (N) tracer. This study aimed to verify the feasibility of using the TM15N values to estimate compost-N recovery by plants. A field experiment was carried out by growing head lettuce, carrots and broccoli in sequence under increasing levels of compost (randomized complete blocks, six doses, four replicates). […]
Granulated fertilizers are more efficient in reducing potassium leaching losses than combining biosolids with inorganic sources
Julia Barra Netto-Ferreira , Fernanda Palmeira Gabetto , Ana Carolina Muniz de Araujo , Ricardo de Castro Dias , Gabriel Maltais-Landry , Everaldo Zonta
25/Mar/2024
ABSTRACT Widespread use of soluble mineral fertilizers derived from non-renewable sources has raised concerns about environmental impacts, energy expenditures, and sustainability. Combining biosolid and mineral sources of phosphorus and potassium to produce organomineral fertilizers (OMF) can be used as an alternative nutrient source while reducing the environmental impact of sewage residues. As this approach simultaneously provides nutrients and incorporates organic matter, we hypothesized the presence of an organic source (biosolid) granulated with mineral sources of potassium (K) and phosphorus (P) […]
Fertilization strategies and liming in no-till integrated crop–livestock systems: effects on phosphorus and potassium use efficiency
Lucas Aquino Alves , Luiz Gustavo de Oliveira Denardin , Gustavo Duarte Farias , João Pedro Moro Flores , Dionata Filippi , Carolina Bremm , [...]
31/May/2022
ABSTRACT In an integrated crop-livestock system (ICLS), system fertilization exploits the nutrient cycling imposed by animal grazing and increases the system efficiency. An increasingly popular approach to fertilization in southern Brazil is anticipating P and K requirements for soybeans into the pasture phase. This can increase the use efficiency of these nutrients in ICLS based on meat production in winter and soybean in summer. This study aimed to evaluate the effect of fertilization strategy, grazing and soil acidity correction on […]
