Mechanical properties of maize fibre bundles and their contribution to lodging resistance

Huang, Jiale; Liu, Wangyu; Zhou, Feng; Peng, Yujian; Wang, Ningling

doi:10.1016/j.biosystemseng.2016.09.016

Cited by 42 publications

(23 citation statements)

References 30 publications

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“…The maximal compressive force occurs at the 0.75 compression rate, the peak and ultimate bending forces decrease from the bottom to the top of the maize stalk. This relationship corresponds with previous results by Zhang et al (2017) and Huang et al (2016). Their results show that the bottom (root) section of the stalk, where the moisture content of the cellulose and the cross-sectional area are higher, provides a greater resistance against external load than the upper parts of the stalk (middle and top sections).…”

Section: Discussionsupporting

confidence: 91%

“…The results of previous studies show the same linear relationship between the equivalent diameters of the internodes and their positions on the maize stalks (Igathinathane et al, 2006;Robertson et al, 2015a;Huang et al, 2016), moreover, a similar equivalent length ratio characteristic was determined in relation to sorghum stalks (Bakeer et al, 2012). A similar wet mass and moisture content distribution on the stalk was also reported by Igathinathane et al (2006).…”

Section: Discussionsupporting

confidence: 61%

“…Most of the previous studies focused on the geometrical (Robertson et al, 2015a;Forell et al, 2015), the chemical (Akgül et al, 2010) and the structural (Heckwolf et al, 2015;Huang et al, 2016) properties of the stalks which have a significant influence on its mechanical behaviour.…”

Section: Introductionmentioning

confidence: 99%

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Physical characteristics and mechanical behaviour of maize stalks for machine development

Kovács

Kerényi

2019

Int. Agrophys.

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In order to optimize the design and working parameters of agricultural machinery related to harvesting, knowledge about the physical properties and mechanical behaviour of harvest-ready maize is required. Previous studies have been conducted on different maize varieties from different parts of the world in different growing seasons. However, these experiments were usually conducted on dried or deep-frozen samples and therefore the condition of these samples was not related to the harvested material. In order to produce more relevant experimental results, a complex measurement method that involves in-situ observations and laboratorial experiments was established after taking into consideration the process of maize harvesting with a combine harvester and a maize header. The measurement method was successfully conducted over a period of days of harvesting in Hungary. With regard to the physical properties of the stalk, the distribution of the internodal diameter and the length, mass and moisture content of the stalk were determined. The mechanical behaviour of the stalk was analysed through transversal compression, three-point bending and dynamic cutting experiments. The results clearly demonstrate that the physical properties (diameter, length and wet-mass ratio, moisture content) and mechanical properties (force response characteristic and required mechanical work) of different parts of the maize stalk vary significantly. Therefore, different parts of the maize stalk require different considerations during machine development. K e y w o r d s: maize stalk, measurement method, mechanical behaviour, physical properties

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Section: Discussionsupporting

confidence: 91%

Section: Discussionsupporting

confidence: 61%

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Physical characteristics and mechanical behaviour of maize stalks for machine development

Kovács

Kerényi

2019

Int. Agrophys.

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“…Figure 2 depicts the results of these linear regressions. For the Diversity Set, we find that both (4)…”

Section: Resultsmentioning

confidence: 91%

Integrated Puncture Score: force–displacement weighted rind penetration tests improve stalk lodging resistance estimations in maize

et al. 2020

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Background: Stalk lodging (breaking of agricultural plant stalks prior to harvest) is a multi-billion dollar a year problem. Rind penetration resistance tests have been used by plant scientists and breeders to estimate the stalk lodging resistance of maize for nearly a hundred years. However, the rind puncture method has two key limitations: (1) the predictive power of the test decreases significantly when measuring elite or pre-commercial hybrids, and (2) using rind penetration measurements as a breeding metric does not necessarily create stronger stalks. In this study, we present a new rind penetration method called the Integrated Puncture Score, which uses a modified rind penetration testing protocol and a physics-based model to provide a robust measure of stalk lodging resistance. Results: Two datasets, one with a diverse array of maize hybrids and one with only elite hybrids, were evaluated by comparing traditional rind penetration testing and the Integrated Puncture Score method to measurements of stalk bending strength. When evaluating the diverse set of hybrids, both methods were good predictors of stalk bending strength (R 2 values of 0.67). However, when evaluating elite hybrids, the Integrated Puncture Score had an R 2 value of 0.74 whereas the traditional method had an R 2 value of 0.48. Additionally, the Integrated Puncture Score was able to differentiate between the strongest and weakest hybrids in the elite hybrid data set whereas the traditional rind penetration method was not. Additional experiments revealed strong evidence in favor of the data aggregation steps utilized to compute the Integrated Puncture Score. Conclusions: This study presents a new method for evaluating rind penetration resistance that highly correlates with stalk bending strength and can possibly be used as a breeding index for assessing stalk lodging resistance. This research lays the foundation required to develop a field-based high-throughput phenotyping device for stalk lodging resistance.

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“…Stalk lodging (permanent displacement of plants from their vertical orientation) severely reduces agronomic yields of several vital crop species including maize [37][38][39][40][41]43,45]. Yield losses due to stalk lodging are estimated to range from 5-20% annually [1,2].…”

Section: Introductionmentioning

confidence: 99%

Integrated Puncture Score: Force-Displacement Weighted Rind Penetration Tests Improve Stalk Lodging Resistance Estimations in Maize

Stubbs

McMahan

Seegmiller

et al. 2020

Preprint

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Background: Stalk lodging (breaking of agricultural plant stalks prior to harvest) is a multi-billion dollar a year problem. Rind penetration resistance tests have been used by plant scientists and breeders to estimate the stalk lodging resistance of maize for nearly a hundred years. However, the rind puncture method has two key limitations: (1) the predictive power of the test decreases significantly when measuring elite or pre-commercial hybrids, and (2) using rind penetration measurements as a breeding metric does not necessarily create stronger stalks. In this study, we present a new rind penetration method called the Integrated Puncture Score, which uses a modified rind penetration testing protocol and a physics-based model to provide a robust measure of stalk lodging resistance. Results: Two datasets, one with a diverse array of maize hybrids and one with only elite hybrids, were evaluated by comparing traditional rind penetration testing and the Integrated Puncture Score method to measurements of stalk bending strength. When evaluating the diverse set of hybrids, both methods were good predictors of stalk bending strength (R2 values of 0.67). However, when evaluating elite hybrids, the Integrated Puncture Score had an R2 value of 0.74 whereas the traditional method had an R2 value of 0.48. Additionally, the Integrated Puncture Score was able to differentiate between the strongest and weakest hybrids in the elite hybrid data set whereas the traditional rind penetration method was not. Additional experiments revealed strong evidence in favor of the data aggregation steps utilized to compute the Integrated Puncture Score. Conclusions: This study presents a new method for evaluating rind penetration resistance that highly correlates with stalk bending strength and can possibly be used as a breeding index for assessing stalk lodging resistance. This research lays the foundation required to develop a field-based high-throughput phenotyping device for stalk lodging resistance.

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Mechanical properties of maize fibre bundles and their contribution to lodging resistance

Cited by 42 publications

References 30 publications

Physical characteristics and mechanical behaviour of maize stalks for machine development

Physical characteristics and mechanical behaviour of maize stalks for machine development

Integrated Puncture Score: force–displacement weighted rind penetration tests improve stalk lodging resistance estimations in maize

Integrated Puncture Score: Force-Displacement Weighted Rind Penetration Tests Improve Stalk Lodging Resistance Estimations in Maize

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