Initial growth response of twelve Saccharum Complex genotypes to inoculation using Nitrospirillum viridazoti

Alex Paulo Lemos da Silva ORCID logo , Luíz Felipe Coutinho da Silva ORCID logo , Bruno José Rodrigues Alves ORCID logo , Veronica Massena Reis ORCID logo

10/fev/2025

ABSTRACT Sugar and alcohol production in Brazil comes from planting hybrids from the crossing of species belonging to the Saccharum Complex. However, little is known about the growth response of these genera to inoculation using a diazotrophic bacteria Nitrospirillum viridazoti strain BR11145, currently recommended in Brazil as an inoculant for sugarcane growth promotion. This study aimed to evaluate the initial growth of 12 sugarcane genotypes inoculated or not with the strain BR11145. After 109 days, plant growth, biomass and macronutrient […]

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Mulching effects on the quality formation of medicinal materials and rhizosphere soil microenvironment in Notopterygium franchetii in the Qinghai-Tibet Plateau

Shengrong Xu ORCID logo , Ruili Ma ORCID logo , Shibing Yang ORCID logo , Taijia La ORCID logo , Xingmei Nan ORCID logo , Wenjuan Kang ORCID logo

10/fev/2025

ABSTRACT Different cultivation methods directly affect the quality of medicinal materials, to gain insights into the effects of different type of mulching on the quality of Notopterygium franchetii root medicinal materials, farmland experiments were conducted in the Qinghai-Tibet Plateau. We subjected two-year-old Notopterygium franchetii seedling to five mulching treatments: no mulching (CK, control), coarse sand mulching (CM), grassy mulching (GM), stalk mulching (SM), and plastic mulching (PM). Following these treatments, we determined the moisture content, pH, NPK contents, and enzymeatic […]

Immediate and residual effect of tobacco powder compost and of NPK on N2O emissions and on N use in a wheat/corn crop succession

Pâmela Oruoski ORCID logo , Celso Aita ORCID logo , Stefen Barbosa Pujol ORCID logo , Heitor Luís Santin Bazzo ORCID logo

04/fev/2025

ABSTRACT Organic fertilization with tobacco powder compost produced via solid-state fermentation (SSF) is a recent practice that needs to be evaluated through research. This study aimed to evaluate the effect of two nitrogen sources – tobacco powder compost or mineral fertilizer (NPK) – and of compost doses on N use and loss in an immediate and residual way in a wheat/corn crop succession in a subtropical Argissolo. The wheat/corn crop succession was established after three successive fertilizer applications with different […]

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Saturated hydraulic conductivity and steady-state infiltration rate database for Brazilian soils

Marta Vasconcelos Ottoni ORCID logo , Wenceslau Geraldes Teixeira ORCID logo , Aline Mari Huf dos Reis ORCID logo , Letícia Guimarães Pimentel ORCID logo , Luciana Rodrigues Souza ORCID logo , Jackson Adriano Albuquerque ORCID logo , [...]

20/jan/2025

ABSTRACT Soil saturated hydraulic conductivity (Ksat) and steady-state infiltration rate (SSIR) are essential and necessary soil properties for different geoscience applications. Values of these hydraulic properties for the Brazilian territory are difficult to access and are dispersed in research efforts carried out around the country. This study developed an easy-to-manipulate, freely accessible database of soil saturated hydraulic conductivity, comprising field and laboratory analyses, and steady-state infiltration rates for Brazilian soils. This database was named Ksat-SSIR-DB. One analysis of the Ksat-SSIR-DB […]

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Delineation of potential management zones for cowpea by factorial kriging and spatial Fuzzy C-Means of yield and soil chemical and texture properties

João Fernandes da Silva Júnior ORCID logo , Thiago Thomé da Silva ORCID logo , Devid Jackson da Silva Sousa ORCID logo , Rose Luiza Moraes Tavares ORCID logo , Benedito Dutra Luz de Souza ORCID logo , Daniel Pereira Pinheiro ORCID logo

14/jan/2025

ABSTRACT In precision agriculture, accurate delineation of management zones and understanding spatial variability of soil properties and crop yields are critical for optimizing resource allocation and improving productivity. Spatial variability of different environmental factors (soil and plants) is evident in several studies. Associations between the texture and chemical properties of the soil and cowpea yield have been tested, but a large, unexplained variance of ranges between kriged maps is usually reported. This suggests that a deeper exploration into the soil […]

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Effect of potassium rates and application methods in no-till on soil K availability and crop yield

Gustavo Pesini ORCID logo , Dayana Jéssica Eckert ORCID logo , Matheus Ferrari Menegat ORCID logo , Gustavo Frosi ORCID logo , João Pedro Moro Flores ORCID logo , Lucas Aquino Alves ORCID logo , [...]

16/dez/2024

ABSTRACT The combination of potassium (K) fertilization with the adoption of no-tillage (NT) increases the concentration gradient of K in the soil, requiring subsurface layers to diagnose fertility. This study aimed to evaluate the effect of K rates applied in band or broadcast on the soil K availability and soybean and wheat yield. The study was established in 2019 on a Latossolo (Ferralsol) in the northwest of Rio Grande do Sul State, Brazil, under NT since 2002. Summer soybeans and […]

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Critical potassium concentrations for the initial cultivation of Cedrela fissilis Vell

Nonato Junior Ribeiro dos Santos ORCID logo , José Zilton Lopes Santos ORCID logo , Sulianne Idalior Paião Rosado ORCID logo , Tainah Manuela Benlolo Brabosa ORCID logo , Mylena Rêgo Panza ORCID logo , Marcelo Tavares Nunes ORCID logo , [...]

16/dez/2024

ABSTRACT Providing nutrients in optimum quantities is essential for increasing the productivity of timber species. Despite this, we know little about the actual potassium (K) requirements of native Amazonian Forest species. This study aimed to determine the critical level of K deficiency and toxicity for the initial cultivation of cedar. We grew Cedrela fissilis seedlings in a nutrient solution under the effect of five concentrations of K (0, 1, 2, 5, and 8 mmol L-1) in a completely randomized design […]

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Coconut residues increase light fraction of organic matter and water retention in semi-arid sandy soil under irrigated cultivation

Isnara Evelin Barbosa da Silva ORCID logo , Magnus Dall’Igna Deon ORCID logo , Davi José Silva ORCID logo , Francisco Alisson da Silva Xavier ORCID logo , Ana Paula Guimarães Santos ORCID logo , Diana Signor ORCID logo

16/dez/2024

ABSTRACT Coconut palm cultivation is associated with the generation of a large amount of residues, mainly from coconut shells, and their utilization in agriculture can represent an opportunity in the context of circular economy and climate change. This study aimed to determine the effect of coconut shell deposition on carbon (C) stocks, organic matter quality, and soil water retention in coconut palm cultivation in the Brazilian semi-arid region. The study was conducted in a commercial coconut palm cultivation area in […]

Management of marandu grass pasture increases soil carbon and nitrogen stocks in silvopastoral systems in the Brazilian Cerrado

Arnon Henrique Campos Anésio ORCID logo , Márcia Vitória Santos ORCID logo , Mariana Almeida Dumont ORCID logo , Josiane Aparecida de Souza Barboza ORCID logo , Leidivan Almeida Frazão ORCID logo , Rafael Bastos Teixeira ORCID logo , [...]

12/dez/2024

ABSTRACT Integration of systems with pastures, using silvopastoral systems, can increase soil carbon levels, optimize land use, improve the quality and productivity of agricultural products, and promote the conservation of environmental resources. This study aimed to evaluate the influence of management practices of marandu grass at eucalyptus shading levels in a silvopastoral systems, on organic carbon and nitrogen stocks, and soil chemical properties in the Brazilian Cerrado. Environments with different light availability in the plots (SPS 55-60, SPS 50-55, SPS […]

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Accumulation and distribution dynamics of biomass, phosphorus, and starch in cassava fertilized with or without phosphorus during long growth cycles

Luis Augusto de Souza Magolbo ORCID logo , Layana Gomes do Nascimento ORCID logo , Adalton Mazetti Fernandes ORCID logo , Politon Thiago Pereira Guedes ORCID logo

12/dez/2024

ABSTRACT Phosphorus (P) is one of the most important nutrients for plant growth. In cassava, P promotes plant growth and alters the synthesis and accumulation of starch in the storage roots. This study aimed to understand the dynamics of the accumulation and distribution of biomass, P, and starch in cassava plants fertilized with or without P during long growth cycles. A randomized block design with a split-plot scheme and four replicates was used. Plots were represented by the application of […]

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