Evaluating winter malting barley grain yield with fractional green canopy cover

McGlinch, Gregory J.; Jacquemin, Stephen J.; Lindsey, Laura E.

doi:10.1002/cft2.20079

Cited by 2 publications

(1 citation statement)

References 12 publications

(26 reference statements)

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“…This was also evidenced by the green canopy cover during the booting stage. Previous research [84] has shown that Canopeo-measured green canopy cover accounted for 65% of the variability in winter malting barley grain yield. Although the lack of yield penalties remained consistent across both experiments, it appeared that grains spike −1 exhibited a higher value in Larissa, whereas spikes m −2 recorded a higher value in Livadia.…”

Section: Exploring the Feasibility Of A 34% Nitrogen Rate Reduction I...mentioning

confidence: 94%

Optimizing Sustainability in Malting Barley: A Practical Approach to Nitrogen Management for Enhanced Environmental, Agronomic, and Economic Benefits

Vahamidis,

Stefopoulou,

Kotoulas

2023

Agriculture

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Nitrogen (N) fertilisers used in barley production serve as the primary contributors to total greenhouse gas (GHG) emissions. Consequently, to lower the carbon footprint (CF) and GHG emissions, it is imperative to either reduce N fertiliser rates or enhance grain yield and improve nitrogen use efficiency (NUE). To address this challenge, we combined two strategies related to N: (1) a 34% reduction in the total N rate compared to the control (total N rate 108–110 kg N ha−1), and (2) testing two types of N fertilisers for topdressing against the control (common sulfur urea). These types included (a) a mixture comprising controlled-release fertiliser (CRF) combined with ammonium sulfate nitrate fertiliser in a 40:60 ratio (CRF + Nitro) and (b) ammonium sulfate nitrate (Nitro). Experiments were conducted in two distinct areas of Greece specialising in cereal production, aiming to unveil the effects of these strategies on all sustainability aspects of malting barley production. The results showed that although a 34% reduction in N rate did not result in yield penalties or a decrease in grain size, it did have a negative impact on grain protein content (GPC). CRF + Nitro not only reduced CF by approximately 30% compared to the control but also increased N agronomic efficiency by 51.5% and net profit by 7.1%. Additionally, it was demonstrated that the maximum achievable reduction in total GHG emissions and CF, by excluding N fertilisation from the crop system, ranged from 68.5% to 74.3% for GHG emissions and 53.8% to 67.1% for CF.

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Section: Exploring the Feasibility Of A 34% Nitrogen Rate Reduction I...mentioning

confidence: 94%

Optimizing Sustainability in Malting Barley: A Practical Approach to Nitrogen Management for Enhanced Environmental, Agronomic, and Economic Benefits

Vahamidis,

Stefopoulou,

Kotoulas

2023

Agriculture

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Yield and Quality Changes in Barley Genotypes During High Temperature Stress Caused by Late Sowing

Eliş¹,

Yıldırım²

2023

RAR

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In achieve yield sustainability, it is important to cultivate barley varieties that are resistant to the heat and drought stress conditions carried on by global climate change. Barley is one of the significant cultivars that is negatively affected by global climate change due to its low tolerance to heat stress. Late sowing was employed to ensure that plants were exposed to heat stress in order to evaluate the agronomic performance of barley genotypes under high temperature stress. The late sowing process was carried out in February 2019 and 2020 years. Heading time, physiological maturity, plant height, chlorophyll content (SPAD), normalized difference vegetation index (NDVI), grain weight, protein content, test weight, ground cover (Canopeo) and leaf area index (LAI) were investigated using three local varieties, three advanced lines, and two standard barley varieties. Precipitation of more than 450 mm throughout the vegetation period in both years, as well as sufficient water storage in the soil before to the vegetation period, allowed the growth phase to be effectively examined under heat stress. There were significant differences among genotypes in all traits except plant height and NDVI. Except for physiological maturation and protein ratio, the genotype x environment interaction had an effect on all characteristics. This demonstrated that, in the absence of water stress, mainly high temperature effects had an impact on yield. Among the advanced lines examined, the DZ21-17 genotype succeeded in terms of staying green, being early, increasing chlorophyll content, and increasing grain weight. Local varieties maintained productivity in heat stress by increasing leaf area, while grain yield potential stayed behind standard varieties and advanced lines. Local cultivars had the advantage of fast ground cover and having a high growth rate. It has been determined that barley genotypes with high plant height and grain weight will have a high yield potential under conditions of heat stress.

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Evaluating winter malting barley grain yield with fractional green canopy cover

Cited by 2 publications

References 12 publications

Optimizing Sustainability in Malting Barley: A Practical Approach to Nitrogen Management for Enhanced Environmental, Agronomic, and Economic Benefits

Optimizing Sustainability in Malting Barley: A Practical Approach to Nitrogen Management for Enhanced Environmental, Agronomic, and Economic Benefits

Yield and Quality Changes in Barley Genotypes During High Temperature Stress Caused by Late Sowing

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