Yield and quality of densely cultivated onion cultivars as function of nitrogen fertilization

Gonçalves, Francisco das Chagas; Grangeiro, Leílson Costa; Sousa, Valdívia de Fátima Lima de; Santos, Jandeilson Pereira dos; Souza, Francisco Irael de; Silva, Luiz R. R. da

doi:10.1590/1807-1929/agriambi.v23n11p847-851

Cited by 13 publications

(3 citation statements)

References 14 publications

(12 reference statements)

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“…The yield registered in the current experiment is near the productivity observed in other studies carried out within and abroad of Europe [66][67][68]. In particular, concerning fertilization management, as in our experiment, the highest yield with similar production was also obtained with a dose of 180 kg N ha −1 by Díaz-Pérez et al [69], Rodrigues et al [70], and Gonçalves et al [71]. Onion yield is strictly linked to N fertilization and is directly proportional to the amount of N supplied to the crop.…”

Section: Ec [µS CMsupporting

confidence: 83%

Monitoring Onion Crop “Cipolla Rossa di Tropea Calabria IGP” Growth and Yield Response to Varying Nitrogen Fertilizer Application Rates Using UAV Imagery

Messina

Praticò

Badagliacca

et al. 2021

Drones

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Remote sensing (RS) platforms such as unmanned aerial vehicles (UAVs) represent an essential source of information in precision agriculture (PA) as they are able to provide images on a daily basis and at a very high resolution. In this framework, this study aims to identify the optimal level of nitrogen (N)-based nutrients for improved productivity in an onion field of “Cipolla Rossa di Tropea” (Tropea red onion). Following an experiment that involved the arrangement of nine plots in the onion field in a randomized complete block design (RCBD), with three replications, three different levels of N fertilization were compared: N150 (150 kg N ha−1), N180 (180 kg N ha−1), and e N210 (210 kg N ha−1). The crop cycle was monitored using multispectral (MS) UAV imagery, producing vigor maps and taking into account the yield of data. The soil-adjusted vegetation index (SAVI) was used to monitor the vigor of the crop. In addition, the coverage’s class onion was spatially identified using geographical object-based image classification (GEOBIA), observing differences in SAVI values obtained in plots subjected to differentiated N fertilizer treatment. The information retrieved from the analysis of soil properties (electrical conductivity, ammonium and nitrate nitrogen), yield performance and mean SAVI index data from each field plot showed significant relationships between the different indicators investigated. A higher onion yield was evident in plot N180, in which SAVI values were higher based on the production data.

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Section: Ec [µS CMsupporting

confidence: 83%

Monitoring Onion Crop “Cipolla Rossa di Tropea Calabria IGP” Growth and Yield Response to Varying Nitrogen Fertilizer Application Rates Using UAV Imagery

Messina

Praticò

Badagliacca

et al. 2021

Drones

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“…Argissolo e Neossolo, respectivamente (Figura 1D). Aumento da produtividade de bulbos de classes com maior diâmetro com o incremento de doses de N e a redução na produtividade de bulbos de menor diâmetro tem sido observado (CECÍLIO FILHO et al, 2010;KURTZ et al, 2012;COSTA, 2014aCOSTA, e 2014bRODRIGUES et al, 2015;MENEZES JÚNIOR;KURTZ, 2016;GONÇALVES et al, 2019).…”

Section: Methodsunclassified

Índice SPAD, teores de nitrato na seiva de folhas e produtividade de cebola em dois tipos de solo / SPAD index, nitrate contents in leaf sap and yield of onion on two soil types

Vidigal¹,

Moreira²

2021

BJDV

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Avaliou-se o efeito de cinco doses de N (0; 80; 160; 240 e 320 kg ha -1 ) sobre os índices SPAD e nitrato na seiva e a produção de bulbos de cebola hibrida Superex. Dois experimentos foram conduzidos a campo no delineamento de blocos casualizados com quatro repetições, no período de maio a outubro, sendo um em Argissolo Vermelho Amarelo, textura argilosa, na Zona da Mata, e outro em Neossolo Quartzarênico, textura arenosa, na região Norte de Minas Gerais. O N foi aplicado em cobertura, parcelado em três épocas aos 65, 79 e 107 dias após a semeadura (DAS), na forma de uréia. A colheita foi realizada aos 147 DAS. A adubação com N em cobertura influenciou a produtividade de bulbos comercializáveis e a classe 4 representou a maior proporção de bulbos comercializáveis, nos dois tipos de solo. No Argissolo, a produção máxima (56,98 t ha -1 ) foi estimada com 203 kg ha -1 de N e no Neossolo (62,09 kg ha -1 ) foi estimada com 213 kg de N ha -1 . A massa da matéria seca de bulbo representou 79,34 % e 82,69 % da massa seca da planta no Argissolo e no Neossolo, respectivamente. Os níveis críticos para o índice SPAD situaram-se entre 65,92 e 69,68 e para o teor de nitrato na seiva das folhas situaram-se entre 1.008 e 2.130 mg L -1 . O estado nutricional de nitrogênio da cebola pode ser estimado pelo uso do índice SPAD. O nível crítico para o índice SPAD e o teor de nitrato na seiva variou com o tipo de solo. O acúmulo de massa da matéria seca da planta de cebola foi influenciado pelo tipo de solo e condições climáticas da região de cultivo. Maior produtividade de cebola pode ser obtida com aplicação de doses de N superiores a recomendada atualmente.

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“…Shallot bulb diameter and dry weight increased 31.03% and 35.95%, respectively, from the application of 200 kg N ha -1 [46]. Onion bulbs dry matter percentage increased with the application of 350 mg kg -1 potassium sulfate and 100 mg kg -1 ammonium nitrate [47]. A fertilizer minus one test on sandy land for shallot showed that N becomes the main limiting factor with light P and K content, whereas P and K nutrients were the limiting factor on sandy land for shallot [35], [41].…”

Section: B Experiments 1: Land Suitability Analysismentioning

confidence: 99%

Double Production of Shallot (Allium cepa L var. aggregatum) based on Climate, Water, and Soil Management in Sandy Land

Sutardi¹,

Pramono²,

Widodo³

et al. 2022

International Journal on Advanced Science, Engineering and Information Technology

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The objective of this study was to double production by True Shallot Seed (TSS) in sandy land agro-ecosystems, widely adapted especially in temperate climate regions. Even though vegetative planting has been carried out using tubers in rice fields and dry land in Indonesia, not much has been done on sandy land. Another research gap also presents from the considerably low actual productivity (10-15 t ha -1 ) that still can be doubled (>20 -30 t ha -1 ) in sandy land. The study used three varieties (Lokananta, Bima, and Trisula) and carried out in three stages: characterization and identification of soil biophysical properties, an in-site study of the seed nursery system of TSS, and an assessment of cultivation development based on plant populations increasing production. This study resulted in TSS productivity 30.66-236.00% higher than average national productivity for all three varieties; this is a novel finding. TSS productivity on sandy land ranging from 14.831 to 28.178 t ha -1 was above the national average production at 10.48 t ha -1 of bulb-seed originated shallots. Thus, this result indicates that TSS seed planting system is more profitable, particularly for shallot seed producers (traders and farmers), aside from saving transportation costs. Another benefit is supporting planning and agronomy development, especially the progress of planting shallot from seeds in Indonesia.

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Yield and quality of densely cultivated onion cultivars as function of nitrogen fertilization

Cited by 13 publications

References 14 publications

Monitoring Onion Crop “Cipolla Rossa di Tropea Calabria IGP” Growth and Yield Response to Varying Nitrogen Fertilizer Application Rates Using UAV Imagery

Monitoring Onion Crop “Cipolla Rossa di Tropea Calabria IGP” Growth and Yield Response to Varying Nitrogen Fertilizer Application Rates Using UAV Imagery

Índice SPAD, teores de nitrato na seiva de folhas e produtividade de cebola em dois tipos de solo / SPAD index, nitrate contents in leaf sap and yield of onion on two soil types

Double Production of Shallot (Allium cepa L var. aggregatum) based on Climate, Water, and Soil Management in Sandy Land

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