Agroecology: Implications for Plant Response to Climate Change

Hatfield, Jerry L.; Prueger, John H.

doi:10.1002/9780470960929.ch3

Cited by 36 publications

(38 citation statements)

References 83 publications

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“…Lobell and Burke 2010, and references therein). While elevated CO 2 has potentially had a positive influence on growth in conditions of favourable water supply, nutrition, and pest control, the size of this 'fertilisation' effect will be partially offset by accompanying higher temperature effects over the next 20-30 years, especially in dryland production areas Hatfield and Prueger 2011). Higher temperatures influence plant growth by accelerating development (thereby causing a reduction in the number of 'growing days' and in the total radiation captured and biomass produced), and more directly by influencing growth processes to affect the photosynthetic capacity of leaves, the composition of biomass, and the establishment and filling of grains or fruits.…”

Section: Adaptation To High Temperature and Elevated Co 2 Conditionsmentioning

confidence: 99%

“…While breeders are actively developing lines that have an increased efficiency of use of water and N, it is not known what impact elevated CO 2 will have on such lines, especially in C 3 species. Hatfield and Prueger (2011) outline many of the issues around these interactions as related to plant growth rate, energy balance and feedback, and the consequences for WUE. Increased WUE under elevated CO 2 in C 3 species occurs through an acceleration of plant growth, and its consequent effect on leaf area (via elevated CO 2 effects on photosynthesis) generates a positive feedback on WUE over periods of days and weeks.…”

Section: Adaptation To High Temperature and Elevated Co 2 Conditionsmentioning

confidence: 99%

“…Biswas et al 2010;Huth et al 2010), but here we limit our interest to the more direct impacts of climate change on plant pests and plant production and quality in food, fibre, and forestry systems. Hatfield and Prueger (2011) concisely review the agro-ecological implications of climate change for plant responses, considering growth, yield, and quality, and they emphasise the importance of interactions among the factors of elevated CO 2 , temperature, rainfall patterns, and nitrogen (N) fertiliser. They summarise the implications as:…”

Section: Introductionmentioning

confidence: 99%

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Plant adaptation to climate change—opportunities and priorities in breeding

et al. 2012

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Abstract. Climate change in Australia is expected to influence crop growing conditions through direct increases in elevated carbon dioxide (CO 2 ) and average temperature, and through increases in the variability of climate, with potential to increase the occurrence of abiotic stresses such as heat, drought, waterlogging, and salinity. Associated effects of climate change and higher CO 2 concentrations include impacts on the water-use efficiency of dryland and irrigated crop production, and potential effects on biosecurity, production, and quality of product via impacts on endemic and introduced pests and diseases, and tolerance to these challenges. Direct adaptation to these changes can occur through changes in crop, farm, and value-chain management and via economically driven, geographic shifts where different production systems operate. Within specific crops, a longer term adaptation is the breeding of new varieties that have an improved performance in 'future' growing conditions compared with existing varieties.In crops, breeding is an appropriate adaptation response where it complements management changes, or when the required management changes are too expensive or impractical. Breeding requires the assessment of genetic diversity for adaptation, and the selection and recombining of genetic resources into new varieties for production systems for projected future climate and atmospheric conditions. As in the past, an essential priority entering into a 'climate-changed' era will be breeding for resistance or tolerance to the effects of existing and new pests and diseases. Hence, research on the potential incidence and intensity of biotic stresses, and the opportunities for breeding solutions, is essential to prioritise investment, as the consequences could be catastrophic. The values of breeding activities to adapt to the five major abiotic effects of climate change (heat, drought, waterlogging, salinity, and elevated CO 2 ) are more difficult to rank, and vary with species and production area, with impacts on both yield and quality of product. Although there is a high likelihood of future increases in atmospheric CO 2 concentrations and temperatures across Australia, there is uncertainty about the direction and magnitude of rainfall change, particularly in the northern farming regions. Consequently, the clearest opportunities for 'in-situ' genetic gains for abiotic stresses are in developing better adaptation to higher temperatures (e.g. control of phenological stage durations, and tolerance to stress) and, for C 3 species, in exploiting the (relatively small) fertilisation effects of elevated CO 2 . For most cultivated plant species, it remains to be demonstrated how much genetic variation exists for these traits and what value can be delivered via commercial varieties. Biotechnology-based breeding technologies (marker-assisted breeding and genetic modification) will be essential to accelerate genetic gain, but their application requires additional investment in the understanding, genetic characterisation,...

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Section: Adaptation To High Temperature and Elevated Co 2 Conditionsmentioning

confidence: 99%

Section: Adaptation To High Temperature and Elevated Co 2 Conditionsmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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Plant adaptation to climate change—opportunities and priorities in breeding

et al. 2012

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“…Increased inter-annual variability in summer and winter precipitation, as well as in summer temperatures, is also expected (Giorgi and Lionello, 2008). Changes in atmospheric CO 2 concentration, temperature and precipitation patterns are expected to affect plant productivity in a complex manner due to a set of mechanisms and interactions at different scales from the individual leaves to agroecosystems (Hatfield and Prueger, 2011;Xu et al, 2013). For grasslands, there are also important complicating factors such as plant competition and other plant-plant interactions, perennial growth habits, seasonal productivity patterns, and plant-animal interactions (Porter et al, 2014).…”

Section: Climate Change and Nordic Versus Mediterranean Grasslandsmentioning

confidence: 99%

How can forage production in Nordic and Mediterranean Europe adapt to the challenges and opportunities arising from climate change?

Ergon

Seddaiu

Korhonen

et al. 2018

European Journal of Agronomy

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Climate change and its eﬀects on grassland productivity vary across Europe. The Mediterranean and Nordic regions represent the opposite ends of a gradient of changes in temperature and precipitation patterns, with increasingly warmer and wetter winters in the north and increasingly warmer and drier summers in the south. Warming and elevated concentration of atmospheric CO2 may boost forage production in the Nordic region. Production in many Mediterranean areas is likely to become even more challenged by drought in the future, but elevated CO2 can to some extent alleviate drought limitation on photosynthesis and growth. In both regions, climate change will aﬀect forage quality and lead to modiﬁcations of the annual productivity cycles, with an extended growing season in the Nordic region and a shift towards winter in the Mediterranean region. This will require adaptations in defoliation and fertilization strategies. The identity of species and mixtures with optimal performance is likelyto shift somewhat inresponse to altered climate and management systems. Itis argued that breeding of grassland species should aimto (i) improve plantstrategies to cope with relevant abiotic stresses and (ii) optimize growth and phenology to new seasonal variation, and that plant diversity at all levels is a good adaptation strategy

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“…The detailed reviews by and Izaurralde et al (2011) provide insights into the impacts of temperature on crop growth and development. Hatfield and Prueger (2011) described how temperature increases tend to increase crop water use, assuming adequate soil water. Where soil water is inadequate, crop water stress will lead to decreases in crop growth and yield.…”

Section: Implications Of Warmer Temperaturesmentioning

confidence: 99%

Convergence of agricultural intensification and climate change in the Midwestern United States: implications for soil and water conservation

Hatfield

Cruse

Tomer

2013

Mar. Freshwater Res.

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Abstract. Society faces substantial challenges to expand food production while adapting to climatic changes and ensuring ecosystem services are maintained. A convergence of these issues is occurring in the Midwestern United States, i.e. the 'cornbelt' region that provides substantial grain supplies to world markets but is also well known for its contribution to hypoxic conditions in the Gulf of Mexico due to agricultural nutrient losses. This review examines anticipated trends in climate and possible consequences for grain production and soil resource management in this region. The historic climate of this region has been ideal for large-scale agriculture, and its soils are among the world's most productive. Yet under current trends, degradation of the soil resource threatens our capacity to ensure a stable food supply and a clean environment in the face of a changing climate. A set of strategies and practices can be implemented to meet these challenges by maintaining and improving hydrologic and plant-growth functions of soil, which will improve outcomes for aquatic ecosystems and for the agricultural sector. Soil management ensures our long-term capacity to provide a reliable food supply, and mitigates pressures to expand agricultural practices into marginal croplands that would lead to further environmental degradation.

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Agroecology: Implications for Plant Response to Climate Change

Cited by 36 publications

References 83 publications

Plant adaptation to climate change—opportunities and priorities in breeding

Plant adaptation to climate change—opportunities and priorities in breeding

How can forage production in Nordic and Mediterranean Europe adapt to the challenges and opportunities arising from climate change?

Convergence of agricultural intensification and climate change in the Midwestern United States: implications for soil and water conservation

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