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View article: Delta yield predicts nitrogen fertilizer requirements for corn in US production systems
Delta yield predicts nitrogen fertilizer requirements for corn in US production systems Open
Predicting crop nitrogen (N) fertilizer needs is a major challenge in contemporary agriculture. Despite the success of current N recommendation tools, environmental concerns over N pollution from agriculture, and the adoption of improved c…
View article: The missing link: A purpose‐led framework for assessing soil health
The missing link: A purpose‐led framework for assessing soil health Open
Human food supply depends on healthy soils, yet lack of metrics to estimate returns from soil‐health‐improving practices (SHIPs) limits their adoption at ecologically significant scale. To address this limitation, we evaluate a purpose‐led…
View article: High Tunnels as a Unique Theatre for Investigating the Complex Causes of Yellow Shoulder Disorder in Tomatoes
High Tunnels as a Unique Theatre for Investigating the Complex Causes of Yellow Shoulder Disorder in Tomatoes Open
Yellow shoulder disorder (YSD) is characterized by discolored regions beneath the fruit’s epidermis, impacting the ripening process and rendering tomatoes unsuitable for marketing. YSD poses a significant challenge in high-tunnel (HT) toma…
View article: Chemical differences in cover crop residue quality are maintained through litter decay
Chemical differences in cover crop residue quality are maintained through litter decay Open
As plant litter decomposes, its mass exponentially decreases until it reaches a non-zero asymptote. However, decomposition rates vary considerably among litter types as a function of their overall quality (i.e., carbon:nitrogen (C:N) ratio…
View article: Genetic Variation and Heritability of Sensory and Artisan Bread Traits in a Set of SRW Wheat Breeding Lines
Genetic Variation and Heritability of Sensory and Artisan Bread Traits in a Set of SRW Wheat Breeding Lines Open
Focus on local food production and supply chains has heightened in recent years, as evidenced and amplified by the COVID-19 pandemic. This study aimed to assess the suitability of soft red winter (SRW) wheat breeding lines for local artisa…
View article: Contributions of plant breeding to soil carbon storage: Retrospect and prospects
Contributions of plant breeding to soil carbon storage: Retrospect and prospects Open
There is interest in harnessing cropland C storage potential at a large scale to mitigate climate change and improve land productivity. While the effects of soil management practices on C storage have been studied extensively, opportunitie…
View article: Litter quality and living roots affected the formation of new mineral-associated organic carbon but did not affect total mineral-associated organic carbon in a short-term incubation
Litter quality and living roots affected the formation of new mineral-associated organic carbon but did not affect total mineral-associated organic carbon in a short-term incubation Open
Storing carbon (C) in soil organic matter (SOM) is critical for mitigating climate change as well as for providing food security under extreme weather events. Mineral-associated organic matter (MAOM), which is the organic matter attached t…
View article: A large subsoil carbon sink in the United States Corn Belt
A large subsoil carbon sink in the United States Corn Belt Open
Current soil C inventories focus on surface layers although over half of soil C is found below 20 cm. Recent and ongoing changes in agricultural management, crop productivity, and climate in Midwest US cropland may influence subsoil C stoc…
View article: A large subsoil carbon sink in the United States Corn Belt
A large subsoil carbon sink in the United States Corn Belt Open
Current soil C inventories focus on surface layers although over half of soil C is found below 20 cm. Recent and ongoing changes in agricultural management, crop productivity, and climate in Midwest US cropland may influence subsoil C stoc…
View article: Selecting soil hydraulic properties as indicators of soil health: Measurement response to management and site characteristics
Selecting soil hydraulic properties as indicators of soil health: Measurement response to management and site characteristics Open
Farmers, scientists, and other soil health stakeholders require interpretable indicators of soil hydraulic function. Determining which indicators to use has been difficult because of measurement disconformity, spatial and temporal variabil…
View article: The legacy effect of synthetic N fertiliser
The legacy effect of synthetic N fertiliser Open
Cumulative crop recovery of synthetic fertiliser nitrogen (N) over several cropping seasons (legacy effect) generally receives limited attention. The increment in crop N uptake after the first‐season uptake from fertiliser can be expressed…
View article: Carbon‐sensitive pedotransfer functions for plant available water
Carbon‐sensitive pedotransfer functions for plant available water Open
Currently accepted pedotransfer functions show negligible effect of management‐induced changes to soil organic carbon (SOC) on plant available water holding capacity (θ AWHC ), while some studies show the ability to substantially increase …
View article: How can we estimate optimum fertilizer rates with accuracy and precision?
How can we estimate optimum fertilizer rates with accuracy and precision? Open
For decades, agronomists have invested time and resources to identify the optimum nitrogen (N) rates for cereal crops. The most common method for estimating the agronomic optimum N rate (AONR) is to design a field experiment with several N…
View article: A method for phenotyping roots of large plants
A method for phenotyping roots of large plants Open
Linking root traits to plant functions can enable crop improvement for yield and ecosystem functions. However, plant breeding efforts targeting belowground traits are limited by appropriate phenotyping methods for large root systems. While…
View article: Legacy Effects of Intercropping and Nitrogen Fertilization on Soil N Cycling, Nitrous Oxide Emissions, and the Soil Microbial Community in Tropical Maize Production
Legacy Effects of Intercropping and Nitrogen Fertilization on Soil N Cycling, Nitrous Oxide Emissions, and the Soil Microbial Community in Tropical Maize Production Open
Maize-forage grasses intercropping systems have been increasingly adopted by farmers because of their capacity to recycle nutrients, provide mulch, and add C to soil. However, grasses have been shown to increase nitrous oxide (N 2 O) emiss…
View article: Late-Season Nitrogen Applications Increase Soybean Yield and Seed Protein Concentration
Late-Season Nitrogen Applications Increase Soybean Yield and Seed Protein Concentration Open
Low seed and meal protein concentration in modern high-yielding soybean [ Glycine max L. (Merr.)] cultivars is a major concern but there is limited information on effective cultural practices to address this issue. In the objective of deal…
View article: Reproductive resilience but not root architecture underpins yield improvement under drought in maize
Reproductive resilience but not root architecture underpins yield improvement under drought in maize Open
Because plants capture water and nutrients through roots, it was proposed that changes in root systems architecture (RSA) might underpin the 3-fold increase in maize (Zea mays L.) grain yield over the last century. Here we show that both R…
View article: Reproductive resilience but not root architecture underpin yield improvement in maize (<i>Zea mays</i>L.)
Reproductive resilience but not root architecture underpin yield improvement in maize (<i>Zea mays</i>L.) Open
Plants capture soil resources to produce the grains required to feed a growing population. Because plants capture water and nutrients through roots, it was proposed that changes in root systems architecture (RSA) underpin the three-fold in…
View article: Global change has created a large subsoil carbon sink the U.S. Corn Belt
Global change has created a large subsoil carbon sink the U.S. Corn Belt Open
<p>Using long-term observations and experiments, we show that subsoils in the north central United States are a large modern organic carbon sink (~400 kg C ha<sup>-1</sup> y<sup>-1</sup>). In this region, whic…
View article: Nitrogen Fertilizer Suppresses Mineralization of Soil Organic Matter in Maize Agroecosystems
Nitrogen Fertilizer Suppresses Mineralization of Soil Organic Matter in Maize Agroecosystems Open
The possibility that N fertilizer increases soil organic matter (SOM) mineralization and, as a result, reduces SOM stocks has led to a great debate about the long-term sustainability of maize-based agroecosystems as well as the best method…