3296 results

Diagnostic leaves for evaluating dwarf cashew nutritional status

Thais da Silva Martins ORCID logo , Carlos Alberto Kenji Taniguchi ORCID logo , Luiz Augusto Lopes Serrano ORCID logo , William Natale ORCID logo , Danilo Eduardo Rozane ORCID logo , Adriana Guirado Artur ORCID logo

20/Mar/2025

ABSTRACT Cashew tree (Anacardium occidentale L.) is a fruit species widely cultivated in Brazil, but the interest in evaluating this plant nutritional status is very recent, to the point there is still no defined diagnostic leaf. This study aimed to define the leaves that reflect the nutritional status of dwarf cashews. Leaf samples were collected from a productive orchard established with four dwarf cashew clones: ‘CCP 76’, ‘BRS 189’, ‘BRS 226’, and ‘BRS 265’. Leaf sampling was performed over four […]

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Potential acidity determination for soils with high soil organic matter

Douglas Luiz Grando ORCID logo , Lucas Peranzoni Deponti ORCID logo , Marcos de Lima Rodrigues ORCID logo , Cauan Guerra Martins ORCID logo , William Natale ORCID logo , Djalma Eugenio Schmitt ORCID logo , [...]

20/Mar/2025

ABSTRACT Lime applications are used in acid soils to correct pH and eliminate Al3+ toxicity in crops. The lime rates are determined based on the estimated soil potential acidity (H+Al), using soil incubations with calcium carbonate (CaCO3) for 180 days, being a time-consuming and laborious process. An alternative method with calcium hydroxide [Ca(OH)2] for 96 h incubation may efficiently estimate H+Al, but it needs further studies. Also, soils from specific regions in southern Brazil have high organic matter (SOM) contents […]

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Gypsic soils in the Brazilian Semiarid

Artur Henrique Nascimento da Silva ORCID logo , Marilya Gabryella Sousa ORCID logo , José Coelho de Araújo Filho ORCID logo , Marcelo Metri Corrêa ORCID logo , Xose Lois Otero ORCID logo , Tiago Osório Ferreira ORCID logo , [...]

19/Mar/2025

ABSTRACT Globally, soils with gypsic horizons cover approximately 1 million km², predominantly in arid climates. The formation of pedogenic gypsum in soils has been a topic of discussion in pedological studies for some time, with gypsification representing the process responsible for secondary gypsum accumulation. Even though international classification systems acknowledge the existence of gypsic horizons, there is a paucity of documented evidence concerning their occurrence in Brazilian soils. This study aimed to identify and describe a soil with secondary gypsum […]

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Espodossolos in Brazil: A review of the criteria and conceptualization of the spodic B horizons

Andressa Rosas de Menezes ORCID logo , Ademir Fontana ORCID logo , Lúcia Helena Cunha dos Anjos ORCID logo

19/Mar/2025

ABSTRACT The absence of quantitative limits for the diagnostic attributes that define spodic B horizons in the Brazilian Soil Classification System (SiBCS) allows the inclusion of soils in the Espodossolos (the equivalent of Spodosols or Podzols) classes that contradict the classical concepts that define the podzolization process, by including horizons with low organic carbon (Corg) content, and with alkaline pH, high sum of bases and sodic or solodic characteristics. This study aimed to propose quantitative criteria and limits to identify […]

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Cover crops in between-rows of Coffea canephora for reduction of soil erosion

Gustavo Soares de Souza ORCID logo , Mateus Lopes Domiciano ORCID logo , Gildásio Ribeiro Sarnaglia ORCID logo , Irany Rodrigues Pretti ORCID logo , Petterson Teixeira Gonçalves ORCID logo , Marciano Kaulz ORCID logo , [...]

11/Mar/2025

ABSTRACT Soil erosion in tropical environments causes environmental, social and economic damage. Canephora coffee crops are impacted by soil erosion and testing alternatives to mitigate this damage is a current need. This study aimed to evaluate the losses of sediment, organic carbon, nutrients and surface runoff caused by water erosion in between-rows spacing of Coffea canephora Pierre ex A. Froehner plants in management with and without cover crops, and the effect of the intensity of rains on sediment loss and […]

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Biopores, soil decompacting potential, and biomass of Brachiaria cultivars

Milson Evaldo Serafim ORCID logo , Samara Martins Barbosa ORCID logo , Walmes Marques Zeviani ORCID logo , Eduardo da Costa Severiano ORCID logo , Kátia Aparecida de Pinho Costa ORCID logo , Luciano Recart Romano ORCID logo , [...]

07/Mar/2025

ABSTRACT Grasses of the Brachiaria genus are widely used as cover crops in no-tillage areas of the Brazilian Cerrado. This study aimed to evaluate the ability of six Brachiaria cultivars to produce shoot and root biomass, and the potential of the root system to grow through a 0.01 m thick wax layer with 1.5 MPa penetration resistance. The plants were grown in PVC columns with a diameter of 0.1 m and a height of 0.7 m. The column was divided […]

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Nutrient uptake and removal by runner peanut cultivars of different maturity groups

Carlos Felipe dos Santos Cordeiro ORCID logo , Leonardo Vesco Galdi ORCID logo , Fábio Rafael Echer ORCID logo

27/Feb/2025

ABSTRACT Modern runner-type peanut cultivars have high yield potential, but little is still known about the dynamics of nutrient uptake by these cultivars and whether nutrient uptake differs between maturity groups. This study evaluated the growth, nutrient uptake, and nutrient removal of runner-type peanut cultivars with early and late maturity. The study was conducted in the field in the 2021/2022 season, in a sandy soil environment in southeastern Brazil. Treatments consisted of runner-type peanut cultivars (early and late maturity) and […]

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Macrofauna and soil properties in agroforestry system and secondary forest

Aurea Pinto dos Ramos ORCID logo , Sandra Santana de Lima ORCID logo , Cyndi dos Santos Ferreira ORCID logo , Luiz Alberto Rodrigues da Silva Pinto ORCID logo , Robert Ferreira ORCID logo , Anelise Dias ORCID logo , [...]

27/Feb/2025

ABSTRACT Atlantic Forest devastation has resulted in the search and introduction of management capable of promoting and reestablishing the quality and sustainability of the ecosystem. Agroforestry systems (AS) are recognized for many benefits due to their management. This study compares an agroforestry system macrofauna and physical and chemical soil properties to those of a secondary forest area in the Atlantic Forest biome in southeast Brazil. Agroforestry system with 8 years of establishment and the regenerating subcaducifolious tropical forest fragment with […]

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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/Feb/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 […]

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/Feb/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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