Evaluating quinoa stem lodging susceptibility by a mathematical model and the finite element method under different agronomic practices

Wang, Ning; Wang, Fengxin; Shock, Clinton C.; Meng, Chaobiao; Huang, Zejun; Gao, Lei; Zhao, Jianyu

doi:10.1016/j.fcr.2021.108241

Cited by 8 publications

(8 citation statements)

References 42 publications

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“…However, accessions with a great height (>176.72 cm) and long panicles (>57.94 cm) tend to have lower yields and smaller seed sizes [ 35 ]. Excessive plant height may also result in yield losses, caused by lodging [ 38 ].…”

Section: Resultsmentioning

confidence: 99%

Nutritional Evaluation of Quinoa Genetic Resources Growing in the Climatic Conditions of Central Europe

Dostalíková¹,

Čepková

Janovská

et al. 2023

Foods

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Quinoa displays huge genetic variability and adaptability to distinct climatic conditions. Quinoa seeds are a good source of nutrients; however, the overall nutritional composition and nutrient content is influenced by numerous factors. This study focused on the nutritional and morphologic evaluation of various quinoa genotypes grown in the Czech Republic. Significant differences between years were observed for morphological traits (plant height, inflorescence length, weight of thousand seeds). The weather conditions in the year 2018 were favorable for all the morphological traits. The protein content of quinoa accessions ranged between 13.44 and 20.01% and it was positively correlated to mauritianin. Total phenolic content varied greatly from year to year, while the antioxidant activity remained relatively stable. The most abundant phenolic compounds were the flavonoids miquelianin, rutin, and isoquercetin. Isoquercetin, quercetin, and N-feruoloyl octopamine showed the highest stability under variable weather conditions in the analyzed years. A total of six compounds were detected and quantified in quinoa for the first time. Most varieties performed well under Central European conditions and can be considered a good source of nutrients and bioactive compounds. These data can be used as a source of information for plant breeders aiming to improve the quality traits of quinoa.

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Section: Resultsmentioning

confidence: 99%

Nutritional Evaluation of Quinoa Genetic Resources Growing in the Climatic Conditions of Central Europe

Dostalíková¹,

Čepková

Janovská

et al. 2023

Foods

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“…18,19 In season monitoring of crop nitrogen content and growth, and responding with altered nitrogen and PGR regimes to maintain optimum canopy size to maximise light interception whilst reducing lodging risk form the basis of OSR canopy management principles. 19,20 The physiological parameters of crops and their relative importance to lodging risk have been investigated through the use of 25 maize 23 and OSR. 21,26,27 These models enable the impact of environmental and husbandry influences on lodging risk to be understood mechanistically so that mitigation strategies can be designed more effectively.…”

Section: Introductionmentioning

confidence: 99%

Modelling the impact of cabbage stem flea beetle larval feeding on oilseed rape lodging risk

Wilkinson,

Coston,

Berry

et al. 2024

Pest Management Science

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BackgroundCabbage stem flea beetle (CSFB, Psylliodes chrysocephala L.) is a major pest of oilseed rape (OSR, Brassica napus L.) in the UK and low availability of effective chemical control has increased the need for integrated pest management approaches. The risk of OSR to lodging is strongly related to stem strength, however, the impact of CSFB larval tunnelling on stem strength and subsequent risk to stem lodging is unknown. The study investigated this by applying the Generalised Crop Lodging Model to conventionally grown OSR crops scored for varying levels of CSFB larval tunnelling. Lodging risk mitigation strategies including Plant Growth Regulators (PGR) and varying nitrogen regimes were tested under high CSFB larval pressure.ResultsStems of OSR plants were categorised by the proportion of visual damage (<5%; 5–25%; 26–50%; 51–75%; 75–100%). Stems of 26–50% damage had significantly lower breaking strengths and diameters compared to plants that scored <5%, with the associated reduction in stem failure windspeed equivalent to an order of magnitude increase in the risk of a lodging event occurring in the UK. PGR use reduced plant height and subsequently lodging risk variably across the sites.ConclusionEstimating the proportion of stem tunnelling alongside larval pressure may be a useful tool in considering the contribution of CSFB pressure to lodging risk. The research demonstrates that the use of canopy management principles to optimise canopy size through nitrogen management and PGR use may help offset increased lodging risk caused by CSFB tunnelling.This article is protected by copyright. All rights reserved.

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“…Despite the influence of the increasing N rate on quinoa seed yield and its components in different soil types [ 38 ], the interaction effects between the N rates and other field practices such as irrigation could be important in different climate conditions [ 39 , 40 ]. Limited research on nitrogen fertilizer and irrigation water management is available in European humid weather conditions [ 38 ] or arid weather conditions in quinoa native regions [ 32 ].…”

Section: Introductionmentioning

confidence: 99%

Irrigation Regimes and Nitrogen Rates as the Contributing Factors in Quinoa Yield to Increase Water and Nitrogen Efficiencies

Bahrami

Talebnejad

Sepaskhah

et al. 2022

Plants

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Sustainable field crop management has been considered to reach the food security issue due to global warming and water scarcity. The effect of deficit irrigation and nitrogen rates on quinoa yield is a challenging issue in those areas. In this regard, the interaction effects of different N rates (0, 125, 250, and 375 kg N ha−1) and irrigation regimes [full irrigation (FI) and deficit irrigation at 0.75 FI and 0.5 FI] on quinoa yield and water and nitrogen efficiencies were evaluated with a two-year field experiment. Increasing nitrogen fertilizer application levels from 250 to 375 kg N ha−1 under FI and deficit irrigation did not cause a significant difference in seed yield and the total dry matter of quinoa. Furthermore, 20% and 34% reductions were observed for nitrogen use efficiency (NUE) and nitrogen yield efficiency with the application of 375 kg N ha−1 compared with that obtained in 250 kg N ha−1 nitrogen fertilizer, respectively. Therefore, a Nitrogen application rate of 250 kg ha−1 and applying 0.75 FI is suggested as the optimum rate to reach the highest seed water use efficiency (0.7 kg m−3) and NUE (0.28 kg m−3) to gain 4.12 Mg ha−1 quinoa seed yield. Under non–limited water resource conditions, an FI and N application rate of 375 kg ha−1 could be used for higher seed yield; however, under water-deficit regimes, an N application rate of 250 kg ha−1 could be adequate. However, questions about which environmental factors impressively restricted the quinoa growth for optimizing the potential yield need further investigation.

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Evaluating quinoa stem lodging susceptibility by a mathematical model and the finite element method under different agronomic practices

Cited by 8 publications

References 42 publications

Nutritional Evaluation of Quinoa Genetic Resources Growing in the Climatic Conditions of Central Europe

Nutritional Evaluation of Quinoa Genetic Resources Growing in the Climatic Conditions of Central Europe

Modelling the impact of cabbage stem flea beetle larval feeding on oilseed rape lodging risk

Irrigation Regimes and Nitrogen Rates as the Contributing Factors in Quinoa Yield to Increase Water and Nitrogen Efficiencies

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