Produção de matéria seca de alfafa (Medicago sativa L.) em função de doses de calcário

Nóia, Natália Regina de Campos; Cruz, Mara Cristina Pessôa da; Davalo, Marcelo Jara; Oliveira, M. C. M. de; Fujita, Claudia Kazumi

doi:10.15361/1984-5529.2014v42n3p310-315

Cited by 4 publications

(4 citation statements)

References 5 publications

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“…Brazilian agricultural soils are limited by the common presence of medium and high acidity levels (Raboin et al, 2016;Tiritan et al, 2016) that reduces crop yield potential (Nóia et al, 2014;Da Costa & Crusciol, 2016) and negatively impact the economic balance (Teixeira et al, 2015).…”

Section: Introductionmentioning

confidence: 99%

Pendulum-action spreader for lime application

Duarte

Molin

Wei

et al. 2020

BJD

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Currently the centrifugal spreaders are the most used for lime application in Brazil. The pendulumaction spreaders have characteristics that differentiate them from the centrifugal, such as a symmetrical pattern and the possibility to apply in different widths with the spout change, but are normally not used for lime application due to its high rates. The objective of this work was to resize, create and evaluate a pendulum-action spreader able to distribute lime, at flows larger than 1.50 kg s -1 , usually found in conventional models. A prototype with volumetric measure mechanism and eletric motor drive, connected to a frequency inverter, was developed. Polyvinyl chloride (PVC) pendulums with different lengths were used, with and without a ramp at their ends. Experiment tests were conducted in a completely randomized design with three replications using 7 x 3 x 2 factorial arrangement consisted of seven frequencies, three spout lengths and the use of a ramp at its end. Regarding bandwidth, the ramp utilization in the lowest frequency (1.73 Hz) did not increase the

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Section: Introductionmentioning

confidence: 99%

Pendulum-action spreader for lime application

Duarte

Molin

Wei

et al. 2020

BJD

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“…For Yellow Latosols with low levels of bases, liming is indispensable since it raises the calcium and magnesium contents, which influence the increase of soil base saturation, promoting an increase in nutrient availability in the soil solution, which in turn favors soil biota, root system development, and plant nutrient uptake (Nóia et al, 2014).…”

Section: Introductionmentioning

confidence: 99%

Liming on the growth and production of essential oil of basil grown in different light environments

et al. 2020

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Studies about the influence of agronomic factors in the growing and production of secondary metabolites of basil plants are scarce. Among the existing factors, the soil fertility and the light quality has a great influence in the vegetative production of this group of plants. This study aims to evaluate the impacts of different combinations of light quality and the absence and presence of liming on growth, content and yield of essential basil oil. The experimental design was completely randomized in a 5x2 factorial design arranged in subdivided plots. Five light environments were used: black mesh, thermo-reflective mesh, blue mesh, red mesh, and full sun, and two soil acidity correction conditions. We performed the analysis of plants growth at 50 days after thinning (DAT), besides the determination of the essential oil content and yield. We observed significant interaction between the light environment and the soil acidity correction for the variables root volume and dry mass, and trunk dry mass. Regarding the essential oil production, the greater content and yield were obtained in plats grown under thermo-reflective mesh and with limestone application, increasing the soil base saturation. The basil plants are influenced by the light quality and limestone application on the growth, and essential oil content and yield.

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“…Os latossolos representam 46% dos solos no Cerrado. Eles são naturalmente ácidos, pela constituição do material de origem e pelo elevado processo de intemperismo, e, normalmente, apresentam baixos teores de cátions básicos (NÓIA et al, 2014). No entanto, são solos que apresentam boas condições para a mecanização, sendo seu potencial de produção condicionado pelo uso de corretivos e fertilizantes (BREVILIERI, 2012).…”

Section: Introductionunclassified

Supercalagem: alterações em atributos químicos de um latossolo vermelho-amarelo distrófico

Carneiro

Sousa

Nikkel

et al. 2018

Rev. Ciênc. Agroamb.

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Resumo: Os latossolos correspondem à grande parte dos solos do cerrado, naturalmente apresentando elevada acidez, sendo necessária a prática da calagem para correção desses solos. No entanto, se realizada de forma inadequada, esta pode provocar a supercalagem. Diante disso, o presente trabalho objetivou avaliar o efeito da supercalagem nos atributos químicos de um latossolo vermelho-amarelo distrófico de textura franco argilo arenosa. Os cinco tratamentos foram obtidos a partir de doses de carbonato de cálcio p.a. (CaCO 3). O experimento foi realizado em um delineamento experimental inteiramente casualizado com cinco repetições. Foram utilizadas doses de CaCO 3 equivalentes a 0,0, 1,5, 3,0, 4,5 e 6,0 t ha-1. Foram avaliados os seguintes atributos químicos do solo: cálcio (Ca 2+) trocável, acidez potencial (H+Al), soma de bases (SB), saturação de bases (V%), fósforo (P), capacidade de troca catiônica potencial (CTC potencial) e pH em H 2 O. As propriedades avaliadas apresentaram aumento significativo em função das doses de carbonato de cálcio na supercalagem, exceto para acidez potencial. A supercalagem aumentou o pH do solo para valores acima de 6,5. Calagem com doses elevadas de calcário com baixo Mg causam desequilíbrio nutricional do solo. Palavras-chave: carbonato de cálcio; cerrado; acidez do solo. Overliming: changes in chemical attributes of a Dystrophic Red-Yellow Oxisol

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Produção de matéria seca de alfafa (Medicago sativa L.) em função de doses de calcário

Cited by 4 publications

References 5 publications

Pendulum-action spreader for lime application

Pendulum-action spreader for lime application

Liming on the growth and production of essential oil of basil grown in different light environments

Supercalagem: alterações em atributos químicos de um latossolo vermelho-amarelo distrófico

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