Soil chemical properties and yield of onion crops grown for eight years under no-tillage system with cover crops

Souza, Monique; Júnior, Vilmar Müller; Kürtz, Claudinei; Ventura, Barbara; Lourenzi, Cledimar Rogério; Lazzari, Cleiton Júnior Ribeiro; Ferreira, Guilherme Wilbert; Brunetto, Gustavo; Loss, Arcângelo; Comin, Jucinei José

doi:10.1016/j.still.2020.104897

Cited by 12 publications

(10 citation statements)

References 36 publications

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“…Este resultado está relacionado com o estágio inicial da transição agroecológica do experimento, que requer tempo para re-estabilizar a capacidade produtiva e ecossistêmica do ambiente agrícola (NICHOLLS; ALTIERI, 2018). Isto é demonstrado na produção de cebola (Allium cepa L.) em SPDH, que ao longo dos anos é capaz de elevar o rendimento e a qualidade (em nível de classificação comercial) desta hortaliça (SOUZA et al, 2021).…”

Section: Resultsunclassified

Custos de implantação de alface em sistema de plantio direto de hortaliças em Laranjeiras do Sul, Paraná

Lizarelli,

Santos,

Chimiloski

et al. 2024

Green Journal

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A produção de hortaliças no estado do Paraná advém predominantemente do sistema de plantio convencional. Uma das estratégias tecnológicas para auxiliar o produtor rural no processo de conversão para uma produção sustentável é a implementação do sistema de plantio direto de hortaliças (SPDH). A produção de hortaliças apresenta custos de investimentos elevados principalmente para insumos. O objetivo dessa pesquisa foi determinar os principais custos e coeficientes técnicos na implantação e condução de um hectare de alface produzida em SPDH em área de transição agroecológica no município de Laranjeiras do Sul/PR. O estudo foi realizado na safra agrícola 2021. A implantação e condução de um ciclo da produção de 1 ha de alface em SPDH em transição agroecológica em Laranjeiras do Sul, indicou custo total de R$38.265,00. Os elementos mais relevantes dentro do custo total foram os insumos e as operações manuais.

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Section: Resultsunclassified

Custos de implantação de alface em sistema de plantio direto de hortaliças em Laranjeiras do Sul, Paraná

Lizarelli,

Santos,

Chimiloski

et al. 2024

Green Journal

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“…High temperatures accelerate, while low temperatures delay, bulb formation 2 . The Brazilian national yield average of 26 Mg bulb ha −1 4 remains far below expectations.…”

Section: Introductionmentioning

confidence: 84%

“…Because onions require long days to initiate and speed up bulb swelling and reduce the maturation period 1 , 2 , cultivars were adapted to site conditions to reach high bulb yield and quality 3 . Rainfall also impacts onion yields 4 . High temperatures accelerate, while low temperatures delay, bulb formation 2 .…”

Section: Introductionmentioning

confidence: 99%

Feature-specific nutrient management of onion (Allium cepa) using machine learning and compositional methods

Hahn,

Kurtz,

de Paula

et al. 2024

Sci Rep

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While onion cultivars, irrigation and soil and crop management have been given much attention in Brazil to boost onion yields, nutrient management at field scale is still challenging due to large dosage uncertainty. Our objective was to develop an accurate feature-based fertilization model for onion crops. We assembled climatic, edaphic, and managerial features as well as tissue tests into a database of 1182 observations from multi-environment fertilizer trials conducted during 13 years in southern Brazil. The complexity of onion cropping systems was captured by machine learning (ML) methods. The RReliefF ranking algorithm showed that the split-N dosage and soil tests for micronutrients and S were the most relevant features to predict bulb yield. The decision-tree random forest and extreme gradient boosting models were accurate to predict bulb yield from the relevant predictors (R2 > 90%). As shown by the gain ratio, foliar nutrient standards for nutritionally balanced and high-yielding specimens producing > 50 Mg bulb ha−1 set apart by the ML classification models differed among cultivars. Cultivar × environment interactions support documenting local nutrient diagnosis. The split-N dosage was the most relevant controllable feature to run future universality tests set to assess models’ ability to generalize to growers’ fields.

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“…The role of soil mulching in improving soil's physical properties and interception of water in cultivated land has been proved by a lot of practice [38,39]. First, with the increase in organic coverage, the contents of soil organic carbon, mineral nitrogen, available potassium and exchangeable potassium tend to increase [40][41][42], which can better promote soil development. The improvement of the soil moisture environment is another important aspect of organic mulching to improve the soil environment.…”

Section: Main Progress and Landmark Achievements 321 Theoretical Rese...mentioning

confidence: 99%

Progress of Study on Interception of Soil Mulching with an Insight into Karst Soil Leakage Control: A Review

Xiong

Luo

et al. 2022

Land

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Soil erosion is a global issue of great concern, especially in karst areas with special environments, where subsurface soil leakage is closely related to soil erosion, which has become a key factor limiting agricultural development. To explore how to improve soil erosion in karst areas to enhance soil quality and maintain the sustainable use of the land in the long term, a total of 176 studies on the interception characteristics of soil mulching and erosion management were reviewed using a systematic review approach, through the WoS and CNKI databases. Firstly, quantitative analysis was conducted in terms of the annual volume, content and countries of the published literature. Secondly, from four aspects (theoretical research, mechanism research, technology research and technical demonstration), the main progress and landmark achievements of soil mulching interception and erosion management were classified. It is shown that the interception characteristics of soil mulching can produce an effective blockage for soil leakage in karst areas. Based on the global classification, compared to synthetic materials, natural materials have received more attention. We propose five key scientific questions that still need to be addressed. This review explores the insightful role of soil mulching for karst soil leakage management and aims to provide theoretical support for future research on sustainable land development in karst areas.

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Soil chemical properties and yield of onion crops grown for eight years under no-tillage system with cover crops

Cited by 12 publications

References 36 publications

Custos de implantação de alface em sistema de plantio direto de hortaliças em Laranjeiras do Sul, Paraná

Custos de implantação de alface em sistema de plantio direto de hortaliças em Laranjeiras do Sul, Paraná

Feature-specific nutrient management of onion (Allium cepa) using machine learning and compositional methods

Progress of Study on Interception of Soil Mulching with an Insight into Karst Soil Leakage Control: A Review

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