The Nitrogen Cycle: Implications for Management, Soil Health, and Climate Change

2011 ◽  
pp. 107-129 ◽  
Author(s):  
Bijay-Singh
Keyword(s):  
Climate Change ◽  
Nitrogen Cycle ◽  
Soil Health

scholarly journals Iberian Halophytes as Agroecological Solutions for Degraded Lands and Biosaline Agriculture

2021 ◽  
Vol 13 (2) ◽  
pp. 1005
Author(s):  
Bernardo Duarte ◽  
Isabel Caçador
Keyword(s):  
Climate Change ◽  
Fatty Acids ◽  
Ecosystem Services ◽  
Essential Fatty Acids ◽  
Soil Health ◽  
Mediterranean Area ◽  
Agricultural Products ◽  
Animal Nutrition ◽  
Adverse Conditions ◽  
Green Solution

Research on biosaline agriculture has been increasing worldwide in recent years. In this respect, the Iberian halophyte diversity present a high-value ecological solution to be implemented for biosaline-based agroecosystems. The research on these halophytic species has been increasing worldwide and, in the recent years, especially in terms saline agriculture adaptation, osmophysiology and nutraceutical potential, highlighting the importance and potential of these species in terms of agrosolutions. The Mediterranean area has high biodiversity in terms of endemic halophytic vegetation (ca. 62 species), providing an alternative pool of potential new agricultural products to be cultivated in adverse conditions. Besides being highly diverse, most of these species are endemic and present a perennial life cycle with several applications in terms of food, forage, nutraceutical, feedstock and remediation. More specifically, the Iberian halophytic flora shows potential as resources of essential fatty acids, minerals and antioxidants—all very important for human and animal nutrition. Alongside the establishment of halophyte agroecological solutions is the provision of key ecosystem services, such as carbon sequestration and soil rehabilitation. Moreover, halophyte-based ecosystems provide additional recognized ecosystem services, beyond the final product production, by improving soil health, ecosystem biodiversity and storing large amounts of carbon, thereby increasing the ecosystem resilience to climate change and offering a green solution against climate change.

scholarly journals Climate Resilient Sustainable Agriculture for Restoring the Soil Health and Increasing Rice Productivity as Adaptation Strategy to Climate Change in Indonesia

2021 ◽  
Vol 748 (1) ◽  
pp. 012039
Author(s):  
Tualar Simarmata ◽  
M Khais Proyoga ◽  
Diyan Herdiyantoro ◽  
Mieke R Setiawati ◽  
Kustiwa Adinata ◽  
...  
Keyword(s):  
Climate Change ◽  
Sustainable Agriculture ◽  
Smallholder Farmers ◽  
Soil Health ◽  
Agricultural Practices ◽  
Adaptation Strategy ◽  
Water Efficiency ◽  
Rice Productivity ◽  
Rice Intensification ◽  
Significant Yield

Abstract Climate change (CC) is real and threatens the livelihood of most smallholder farmers who reside along the coastal area. The CC causes the rise of temperature (0.2-0.3°C/decade) and sea level (SRL = 5 mm/year), drought and floods to occur more frequently, the change of rainfall intensity and pattern and shifting of planting season and leads to the decreasing of crop yield or yield loss. Most of the paddy soil has been exhausted and degraded. About 50% of the rice field along the coastline is effected by high salinity and causes significant yield losses. The research was aimed to summarize the results of the system of organic based aerobic rice intensification (known as IPATBO) and of two climate filed school (CFS) in Cinganjeng and Rawapu that situated along the coastline of Pangandaran and Cilacap. Both IPATBO and CFS have adopted the strategy of climate-resilient sustainable agriculture (CRSA) for restoring the soil health and increasing rice productivity, and as well as to empower the farmer community. The implementation of IPATBO (2010-2020) in the different areas has increased the soil health, fertilizers, and water efficiency (reduce inorganic by 25-50%, and water by 30-40%) and increased rice productivity by at least 25-50%. Both CFS in Ciganjeng and Rawaapu were able to improve soil fertility, increase rice productivity, and farmer capacity. This result concludes the agro-ecological based CRSA and CFS can be adopted for the increasing the resilient of agricultural practices and farmers in adapting to climate change

scholarly journals Prospect and Challenges for Sustainable Management of Climate Change-Associated Stresses to Soil and Plant Health by Beneficial Rhizobacteria

Stresses ◽  
2021 ◽  
Vol 1 (4) ◽  
pp. 200-222
Author(s):  
Aniruddha Sarker ◽  
Most. Waheda Rahman Ansary ◽  
Mohammad Nabil Hossain ◽  
Tofazzal Islam
Keyword(s):  
Climate Change ◽  
Relevant Literature ◽  
Sustainable Use ◽  
Soil Health ◽  
Plant Growth Promoting Rhizobacteria ◽  
Critical Discussion ◽  
Climatic Conditions ◽  
Plant Health ◽  
Stressful Environment ◽  
Plant Growth Promoting

Climate change imposes biotic and abiotic stresses on soil and plant health all across the planet. Beneficial rhizobacterial genera, such as Bacillus, Pseudomonas, Paraburkholderia, Rhizobium, Serratia, and others, are gaining popularity due to their ability to provide simultaneous nutrition and protection of plants in adverse climatic conditions. Plant growth-promoting rhizobacteria are known to boost soil and plant health through a variety of direct and indirect mechanisms. However, various issues limit the wider commercialization of bacterial biostimulants, such as variable performance in different environmental conditions, poor shelf-life, application challenges, and our poor understanding on complex mechanisms of their interactions with plants and environment. This study focused on detecting the most recent findings on the improvement of plant and soil health under a stressful environment by the application of beneficial rhizobacteria. For a critical and systematic review story, we conducted a non-exhaustive but rigorous literature survey to assemble the most relevant literature (sorting of a total of 236 out of 300 articles produced from the search). In addition, a critical discussion deciphering the major challenges for the commercialization of these bioagents as biofertilizer, biostimulants, and biopesticides was undertaken to unlock the prospective research avenues and wider application of these natural resources. The advancement of biotechnological tools may help to enhance the sustainable use of bacterial biostimulants in agriculture. The perspective of biostimulants is also systematically evaluated for a better understanding of the molecular crosstalk between plants and beneficial bacteria in the changing climate towards sustainable soil and plant health.

The Potential Impact of Climate Change on Soil Health, Soil Biota, and Soil Properties: A Review

2021 ◽  
pp. 31-48
Author(s):  
Shikha Sharma ◽  
Arti Mishra ◽  
Kartikeya Shukla ◽  
Pratiksha Kumari ◽  
Tanu Jindal ◽  
...  
Keyword(s):  
Climate Change ◽  
Soil Properties ◽  
Soil Health ◽  
Soil Biota ◽  
Impact Of Climate Change ◽  
Potential Impact

scholarly journals Refining physical aspects of soil quality and soil health when exploring the effects of soil degradation and climate change on biomass production: an Italian case study

SOIL ◽  
2019 ◽  
Vol 5 (1) ◽  
pp. 1-14 ◽  
Author(s):  
Antonello Bonfante ◽  
Fabio Terribile ◽  
Johan Bouma
Keyword(s):  
Climate Change ◽  
Soil Properties ◽  
Soil Quality ◽  
Biomass Production ◽  
Soil Type ◽  
Soil Degradation ◽  
Soil Health ◽  
Biological Indicators ◽  
Communication Process ◽  
Physical Chemical

Abstract. This study focuses on soil physical aspects of soil quality and health with the objective to define procedures with worldwide rather than only regional applicability, reflecting modern developments in soil physical and agronomic research and addressing important questions regarding possible effects of soil degradation and climate change. In contrast to water and air, soils cannot, even after much research, be characterized by a universally accepted quality definition and this hampers the internal and external communication process. Soil quality expresses the capacity of the soil to function. Biomass production is a primary function, next to filtering and organic matter accumulation, and can be modeled with soil–water–atmosphere–plant (SWAP) simulation models, as used in the agronomic yield-gap program that defines potential yields (Yp) for any location on earth determined by radiation, temperature and standardized crop characteristics, assuming adequate water and nutrient supply and lack of pests and diseases. The water-limited yield (Yw) reflects, in addition, the often limited water availability at a particular location. Actual yields (Ya) can be considered in relation to Yw to indicate yield gaps, to be expressed in terms of the indicator (Ya/Yw)×100. Soil data to calculate Yw for a given soil type (the genoform) should consist of a range of soil properties as a function of past management (various phenoforms) rather than as a single representative dataset. This way a Yw-based characteristic soil quality range for every soil type is defined, based on semipermanent soil properties. In this study effects of subsoil compaction, overland flow following surface compaction and erosion were simulated for six soil series in the Destra Sele area in Italy, including effects of climate change. Recent proposals consider soil health, which appeals more to people than soil quality and is now defined by separate soil physical, chemical and biological indicators. Focusing on the soil function biomass production, physical soil health at a given time of a given type of soil can be expressed as a point (defined by a measured Ya) on the defined soil quality range for that particular type of soil, thereby defining the seriousness of the problem and the scope for improvement. The six soils showed different behavior following the three types of land degradation and projected climate change up to the year 2100. Effects are expected to be major as reductions of biomass production of up to 50 % appear likely under the scenarios. Rather than consider soil physical, chemical and biological indicators separately, as proposed now elsewhere for soil health, a sequential procedure is discussed, logically linking the separate procedures.

Soil health and climate change

2012 ◽  
Vol 49 (06) ◽  
pp. 49-3278-49-3278
Keyword(s):  
Climate Change ◽  
Soil Health

scholarly journals Hopanoids confer robustness to physicochemical variability in the niche of the plant symbiont Bradyrhizobium diazoefficiens

2021 ◽  
Author(s):  
Elise M Tookmanian ◽  
Lisa Junghans ◽  
Gargi Kulkarni ◽  
Raphael Ledermann ◽  
James Peter Saenz ◽  
...  
Keyword(s):  
Climate Change ◽  
Environmental Variability ◽  
Root Nodules ◽  
Soil Health ◽  
In Planta ◽  
Growth Defects ◽  
Plant Symbiont ◽  
Fitness Advantage ◽  
And Function

Climate change poses a threat to soil health and agriculture, but the potential effects of climate change on soil bacteria that can help maintain soil health are understudied. Rhizobia are a group of bacteria that increase soil nitrogen content through a symbiosis with legume plants. The soil and symbiosis are potentially stressful environments, and the soil will likely become even more stressful as the climate changes. Many rhizobia within the bradyrhizobia clade, like Bradyrhizobium diazoefficiens, possess the genetic capacity to synthesize hopanoids, steroid-like lipids similar in structure and function to cholesterol. Hopanoids are known to protect against stresses relevant to the niche of B. diazoefficiens. Paradoxically, mutants unable to synthesize the extended class of hopanoids participate in similarly successful symbioses compared to the wild type, despite being delayed in root nodule initiation. Here, we show that in B. diazoefficiens, the in vitro growth defects of extended hopanoid deficient mutants can be at least partially compensated for by the physicochemical environment, specifically by optimal osmotic and divalent cation concentrations. Through biophysical measurements, we show that extended hopanoids confer robustness to environmental variability. These results help explain the discrepancy between previous in vitro and in planta results and indicate that hopanoids may provide a greater fitness advantage to rhizobia in the variable soil environment than the more controlled environment within root nodules. To improve the legume-rhizobia symbiosis through either bioengineering or strain selection, it will be important to consider the full lifecycle of rhizobia, from the soil to the symbiosis.

Soil Health and Climate Change

2013 ◽  
Vol 77 (1) ◽  
pp. 336-336
Author(s):  
Umakant Mishra
Keyword(s):  
Climate Change ◽  
Soil Health
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