Agronomic and Physiological Responses to High Temperature, Drought, and Elevated CO2 Interactions in Cereals

Kadam, Niteen N.; Xiao, Gui; Melgar, Reneeliza Jean; Bahuguna, Rajeev Nayan; Quiñones, Cherryl; Tamilselvan, Anandhan; Prasad, P. V. Vara; Jagadish, Krishna S.V.

doi:10.1016/b978-0-12-800131-8.00003-0

Cited by 141 publications

(91 citation statements)

References 179 publications

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“…Due to agro-ecological constraints, it is difficult to achieve long-term global agricultural sustainability, which is faced with the challenge of sustaining global food security despite a rapidly changing climate. A thorough understanding of the complex dynamics of the occurrence of multiple abiotic stresses and the prevailing strategies by which plants tolerate, avoid, or escape such harsh climatic conditions is thus crucial [28]. To counteract such harsh environmental conditions and the issues of feeding the rapidly The concept of agricultural sustainability needs to be reconsidered in the context of the high demand for increasing crop production in resource poor countries due to their rising populations [13] as follows: (i) Enhancement of the productivity per unit time, area, and key inputs, such as water, fertilizers, and energy; (ii) optimization of the use of off-farm inputs; (iii) maximization of the income of households via increasing production, trading carbon credits, off-farm employment, and value addition of farm produce; (iv) improvement of the quality and quantity of fresh water resources at the farm level; (v) provision of educational opportunities, especially for women; (vi) creation of clean household cooking fuel for rural populations to improve the health of women and children and spare animal dung and crop residues for use as soil amendments; and (vii) addressing the concerns of farming families, especially food security until the next harvest.…”

Section: The Concept Of Agricultural Sustainabilitymentioning

confidence: 99%

Section: The Concept Of Agricultural Sustainabilitymentioning

confidence: 99%

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Soil and Crop Management Strategies to Ensure Higher Crop Productivity within Sustainable Environments

2019

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The rising population and reduction in the amount of land and some other resources have created tremendous pressure on current agricultural producers to meet the increasing food demands. To cope with this challenge, certain key inputs, such as fertilizers and other chemicals, are overused, which are worsening the surroundings. This intensive agricultural production without adherence to ecological sustainability has led to declining soil health, land degradation, and severe environmental problems. So, future efforts to feed the growing population should aim for greater agricultural production within sustainable environments. In this regard, innovative steps are needed, as business-as-usual policies lack the potential to cope with these challenges. The concept of agricultural sustainability and various soil and crop management strategies (SCMS) that have been designed to optimize crop yield under sustainable environmental conditions are discussed, including nutrient management, site specific nutrient management (SSNM), integrated nutrient management (INM), integrated soil fertility management (ISFM), integrated soil-crop system management (ISSM), ridge-furrow mulching systems (RFMS), sustainable water management (SWM), conservation agriculture (CA), sustainable land management (SLM), vertical/sky farming, and integrated crop management, and breeding strategies as well as other approaches combined with technological and behavioural changes. The present review suggests that a sustainable production system can be developed by combining the multifaceted efforts under SCMS practices with short- and long-term preventive measures. Reducing chemicals’ usage, such as that of fertilizers and pesticides, plus improvements in the crop input use efficiency could minimize greenhouse gases emissions while protecting the environment. Sustainable agriculture holds promise for humankind and the planet Earth, and it can be successful if all developed and developing nations stand together to seek ‘our common future’ to produce more food while generating less environmental pressure.

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Section: The Concept Of Agricultural Sustainabilitymentioning

confidence: 99%

Section: The Concept Of Agricultural Sustainabilitymentioning

confidence: 99%

Soil and Crop Management Strategies to Ensure Higher Crop Productivity within Sustainable Environments

2019

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“…Temperature is critical for crop growth and yield via various mechanisms (Asseng et al, 2015;Butler & Huybers, 2013;Deryng et al, 2011;Leng, 2017a;Liu et al, 2016;Lobell & Field, 2007;Peng et al, 2004;Ray et al, 2015;Schauberger et al, 2017;Schlenker & Roberts, 2009;Wang et al, 2017;Zhao et al, 2016). High temperatures have direct damage to enzymes, tissue, and reproductive organ and could incur flowering impairment and oxidative stress (Hasanuzzaman et al, 2013;Kadam et al, 2014). High temperature could also lead to intensification of water stress through increasing atmospheric water demand and decreasing soil water content, which would result in gradual close of stomata, reduction in CO 2 uptake, and enhancement of root growth at the expense of aboveground biomass.…”

Section: Introductionmentioning

confidence: 99%

Uncertainty in Assessing Temperature Impact on U.S. Maize Yield Under Global Warming: The Role of Compounding Precipitation Effect

Leng

2019

JGR Atmospheres

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High temperature alone would lead to a well‐understood loss of crop yields, but the compounding effects by other global change factors are much less well understood and can either amplify or reduce temperature‐driven yield change. Analysis focusing on U.S. maize yield shows that the concurrent changes in precipitation have nonnegligible influence on temperature‐yield relations. For the country as a whole, ~27% of the observed strength of temperature‐yield relation relates to the compounding precipitation effects. Further analysis shows that precipitation exerted the compounding effects mainly through its direct influence on yields rather than indirectly from its feedback to temperature. Under 2 and 1.5°C global warming, maize yield for the country as a whole is projected to decrease by ‐13.53 to ‐14.37% and ‐9.02 to ‐9.29%, respectively, with the magnitude of change depending on the climate model. Around 30% of the benefit by constraining global warming to 1.5°C would be contributed by the compounding precipitation effects, pointing to the important role of precipitation in regulating the impacts of temperature rise on yields. The results can greatly improve our understanding and interpretation of the important but uncertain temperature‐yield relations.

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“…When the T max was under 30 • C, the higher the T max , the more yield obtained. Once the T max > 30 • C, which was defined as a high temperature by Schauberger [44], the crop enzymes and tissues are damaged [63,64] and the temperature impairs flowering [65], leads to precocious maturity and senescence [66], and triggers oxidative stress [67]. So, crop yields decline rapidly due to high temperatures, especially under rainfed conditions [4,6,44].…”

Section: Effects Of Climate Factors On Regional and National Food Secmentioning

confidence: 99%

Spatio-Temporal Analysis of Meteorological Elements in the North China District of China during 1960–2015

Yang

Yin

et al. 2018

Water

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Abstract:The North China District (NCD) is one of the main grain production regions in China. The double cropping system of irrigation has been leading to the groundwater table decline at the speed of 1-2 m per year. Climate change leads to uncertainty surrounding the future of the NCD agricultural system, which will have great effects on crop yields and crop water demands. In this research, the Meteorological dataset from 54 weather station sites over the period 1960-2015 were collected to quantify the long-term spatial and temporal trends of meteorological data, including daily minimum temperature (T min ), maximum temperature (T max ), precipitation, solar radiation, reference evapotranspiration (ET 0 ), and aridity index (AI). The results show that the long-term wheat and maize growing season and annual average air temperatures (T min and T max ) showed strong north to south increasing trends throughout the NCD. The average annual precipitation was 632.9 mm across the NCD, more than 70% of which was concentrated in the maize growing season. The regional average annual ET 0 was 1026.1 mm, which was 531.2 and 497.4 mm for the wheat and maize growing season, respectively. The regional precipitation decreased from northwest to southeast in each growing season and annual timescale. The funnel areas have lower precipitation and higher ET 0 than the regional average, which may lead to the mining of the groundwater funnel area. The regional average annual AI is 0.63, which lies in the humid class. For temporal analysis, the regional average trends in annual T min , T max , solar radiation, ET 0 , precipitation, and AI were 0.37 • C/10a, 0.15 • C/10a, −0.28 MJ/day/m 2 /10a, −2.98 mm/10a, −12.04 mm/10a, and 0.005/10a, respectively. The increasing trend of temperature and the decreasing trend of solar radiation may have a negative effect on the regional food security. The funnel area AI showed a significant increasing trend for the winter wheat growing season and a decreasing trend for maize, which indicated that more irrigation will be needed for the maize growing season and the winter fallow policy may lead to the increasing trend precipitation being wasted. Analyzing the growing season and the annual meteorological elements of the spatiotemporal trends can help us better understand the influence of climate change on the natural resources and agricultural development in both the past and the future, and will provide us with invaluable information for the modification of cropping patterns to protect the regional and national water and food security.

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Agronomic and Physiological Responses to High Temperature, Drought, and Elevated CO2 Interactions in Cereals

Cited by 141 publications

References 179 publications

Soil and Crop Management Strategies to Ensure Higher Crop Productivity within Sustainable Environments

Soil and Crop Management Strategies to Ensure Higher Crop Productivity within Sustainable Environments

Uncertainty in Assessing Temperature Impact on U.S. Maize Yield Under Global Warming: The Role of Compounding Precipitation Effect

Spatio-Temporal Analysis of Meteorological Elements in the North China District of China during 1960–2015

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