Review
Environmental Sciences
Waqas Qasim, Longlong Xia, Shan Lin, Li Wan, Yiming Zhao, Klaus Butterbach-Bahl
Summary: Excessive nitrogen fertilizer use in greenhouse vegetable production leads to low nitrogen use efficiency and high nitrogen losses, which can be mitigated by reducing fertilizer application rates.
ENVIRONMENTAL POLLUTION
(2021)
Article
Agriculture, Multidisciplinary
Lucas Pecci Canisares, Ciro Antonio Rosolem, Letusa Momesso, Carlos Alexandre Costa Crusciol, Daniel Mauricio Villegas, Jacobo Arango, Karl Ritz, Heitor Cantarella
Summary: Intercropping maize with Brachiaria grasses does not increase maize yield, but it can provide carbon and recycle nitrogen in the system.
AGRICULTURE ECOSYSTEMS & ENVIRONMENT
(2021)
Article
Soil Science
Yingjie Yan, Jinsong Wang, Dashuan Tian, Yiqi Luo, Xian Xue, Fei Peng, Jin-Sheng He, Lingli Liu, Lifen Jiang, Xin Wang, Yonghui Wang, Lei Song, Shuli Niu
Summary: The research findings indicate that the long-term impact of climate warming on soil respiration primarily stems from the increase in net primary productivity, with both soil respiration and NPP increasing continuously on a global scale.
Article
Environmental Sciences
Wanjia Hu, Junren Tan, Xinrong Shi, Thomas Ryan Lock, Robert L. Kallenbach, Zhiyou Yuan
Summary: Grasslands, the most extensive vegetation type in terrestrial ecosystems, play a crucial role in the soil phosphorus cycle. Nutrient addition and experimental warming have varying impacts on the global grassland ecosystem, affecting microbial biomass, litter phosphorus concentration, and available phosphorus. Environmental factors such as temperature, precipitation, and soil pH can also influence the soil phosphorus response to nutrient addition. Understanding the dynamic changes in soil microbial and enzyme activities is essential for predicting the future phosphorus cycle in grassland soils.
JOURNAL OF SOILS AND SEDIMENTS
(2022)
Article
Environmental Sciences
Yuyu Yang, Lei Liu, Feng Zhang, Xiuying Zhang, Wen Xu, Xuejun Liu, Yi Li, Zhen Wang, Yaowen Xie
Summary: Atmospheric nitrogen deposition in China has a significant impact on soil N2O emissions, especially in South China, the North China Plain and Southwest China. N2O emissions induced by nitrogen deposition account for about 43% of total emissions in agricultural systems in China, with emissions increasing in correlation with nitrogen deposition.
ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH
(2021)
Article
Plant Sciences
Sara Hube, Francisco Salazar, Marion Rodriguez, Jaime Mejias, Luis Ramirez, Marta Alfaro
Summary: Increasing rates of nitrogen fertilizer use result in increased nitrogen losses, mainly in the forms of ammonia and nitrous oxide, to the atmosphere. This study evaluated the effects of foliar application of nitrogen-based nanoformulations on nitrogen gas emissions from grasslands. Results showed that nitrate-based fertilizers had lower nitrogen gas emissions compared to ammonium-based nanoformulations. Ammonia volatilization was the main pathway for nitrogen losses, and indirect nitrogen oxide emissions exceeded direct emissions. There were no significant effects of the nitrogen treatments on soil available nitrogen or pasture yield.
JOURNAL OF SOIL SCIENCE AND PLANT NUTRITION
(2022)
Article
Green & Sustainable Science & Technology
Qingguan Wu, Yong He, Zhiming Qi, Qianjing Jiang
Summary: This study conducted a global meta-analysis to explore the effects of drainage on rice yield and greenhouse gas emissions in paddy systems. The results showed that implementing drainage had a minimal impact on yield but significantly reduced CH4 emissions, especially in soils with higher pH and organic carbon content. Extending the duration and increasing the frequency of drainage increased N2O emissions but contributed to a better reduction in CH4 emissions. Implementing drainage in paddy systems with organic amendment achieved greater overall greenhouse gas emissions reduction.
JOURNAL OF CLEANER PRODUCTION
(2022)
Article
Geography, Physical
Ziyu Yan, Zhihai Gao, Bin Sun, Xiangyuan Ding, Ting Gao, Yifu Li
Summary: Grassland is a crucial land resource for human survival and development, but the extent of its global degradation remains uncertain. This study quantitatively explored global grassland degradation trends from 2000 to 2020 and analyzed the driving factors, especially in hotspots. The results showed significant improvement in global grassland since 2000, with Africa and Asia leading in degradation and improvement, respectively. Climate change and human activities were identified as the main driving factors, accounting for a large percentage of grassland degradation and improvement.
INTERNATIONAL JOURNAL OF DIGITAL EARTH
(2023)
Article
Environmental Sciences
Chuang Yan, Zhiyou Yuan, Zunchi Liu, Jingjing Zhang, Kai Liu, Xinrong Shi, T. Ryan Lock, Robert L. Kallenbach
Summary: This study investigated the effects of warming and N addition on root traits in different grassland ecosystems along an aridity gradient in northern China. Results showed that warming increased root-shoot ratio in dry years but decreased root production and turnover in all grasslands, while N addition had varying effects on root traits depending on the grassland type and aridity level. Overall, warming and N addition had different impacts on root traits in the studied grasslands.
SCIENCE OF THE TOTAL ENVIRONMENT
(2021)
Article
Agronomy
Upendra M. Sainju, Patrick G. Hatfield, Devon Ragen
Summary: This study compared the global warming potential and greenhouse gas intensity of wheat in organic and conventional farming systems. The results showed that using sheep grazing to manage weeds in the organic farming system was effective in reducing global warming potential and greenhouse gas intensity.
Article
Environmental Sciences
Chuan Zhong, Ying Liu, Xintong Xu, Binjuan Yang, Muhammad Aamer, Peng Zhang, Guoqin Huang
Summary: The study found that the Chinese milk vetch-rice-sweet potato parallel to soybean cropping system significantly reduces CH4 emissions but increases N2O emissions. Paddy-upland rotation decreases soil CH4 emissions but increases N2O emissions. The interaction between Chinese milk vetch incorporation and paddy-upland rotation enhances N2O emissions and soil nitrate content.
ENVIRONMENTAL POLLUTION
(2021)
Article
Engineering, Environmental
Yuyu Yang, Lei Liu, Feng Zhang, Xiuying Zhang, Wen Xu, Xuejun Liu, Zhen Wang, Yaowen Xie
Summary: Agricultural soil is the main source of nitrous oxide emissions, with atmospheric nitrogen deposition as an important factor in increasing soil N2O emissions. The study shows that N deposition accounts for a significant portion of global cropland soil N2O emissions and predicts a substantial increase in emissions due to N deposition and climate change by 2100.
ENVIRONMENTAL SCIENCE & TECHNOLOGY
(2021)
Article
Environmental Sciences
Chan Guo, Xufei Liu, Xuefei He
Summary: The study collected 174 studies from 16 countries to determine appropriate nitrogen fertilization rates for enhancing crop yield while reducing greenhouse gas emissions. Results showed positive effects on crop yield and negative effects on greenhouse gas intensity, with recommendations for specific application strategies in different regions.
SCIENCE OF THE TOTAL ENVIRONMENT
(2022)
Article
Geosciences, Multidisciplinary
Jiamin Wan, Tetsu K. Tokunaga, Wendy Brown, Alexander W. Newman, Wenming Dong, Markus Bill, Curtis A. Beutler, Amanda N. Henderson, Nydra Harvey-Costello, Mark E. Conrad, Nicholas J. Bouskill, Susan S. Hubbard, Kenneth H. Williams
Summary: This study reveals the contribution of bedrock to nitrous oxide and the importance of the nitrogen cycle. The weathering of nitrogen-rich bedrock in the zone of seasonally fluctuating water table makes a significant contribution to the nitrogen cycle.
Article
Biodiversity Conservation
Nan Cui, Lianxuan Shi, Jixun Guo, Tao Zhang
Summary: The study demonstrates that the interactions among warming, nitrogen deposition, and AM fungi can affect soil N2O emissions, and the role of AM fungi in reducing N2O emissions is influenced by different global change contexts.
ECOLOGICAL INDICATORS
(2021)
Editorial Material
Plant Sciences
Idupulapati Madhusudana Rao, Emmanuel Delhaize, Zhi Chang Chen
FRONTIERS IN PLANT SCIENCE
(2021)
Article
Plant Sciences
Juan Carlos Suarez, Jose A. Polania, Jose Alexander Anzola, Amara Tatiana Contreras, Dina Luz Mendez, Jose Ivan Vanegas, Jhon Eduar Noriega, Leonardo Rodriguez, Milan O. Urban, Steve Beebe, Idupulapati M. Rao
Summary: This study aimed to evaluate the physiological characteristics and contributions to superior agronomic performance of different breeding lines at different nitrogen fertilizer levels. Results showed that lines with indeterminate growth habit responded better to increased nitrogen fertilizer through their physiological response, leading to improved yield. Two breeding lines (BFS 10 and SEF 10) stood out in their agronomic performance due to their photosynthetic capacity and ability to mobilize photosynthates in response to increased nitrogen fertilizer.
ACTA PHYSIOLOGIAE PLANTARUM
(2021)
Article
Agronomy
Juan Carlos Suarez, Jose Alexander Anzola, Amara Tatiana Contreras, Dina Luz Salas, Jose Ivan Vanegas, Milan O. Urban, Stephen E. Beebe, Idupulapati M. Rao
Summary: The study aims to evaluate the agronomic performance of different common bean lines intercropped with maize in the Colombian Amazon region and identify the best intercropping pattern to maximize productivity and land use. The results show that intercropping patterns can increase economic benefits and land use efficiency, especially under organic fertilizer application. This is of great significance for smallholders in the Amazon region.
Article
Plant Sciences
Juan Carlos Suarez, Amara Tatiana Contreras, Jose Alexander Anzola, Jose Ivan Vanegas, Idupulapati M. Rao
Summary: By evaluating the adaptation of four types of tepary bean genetic resources under high temperature and acid soil conditions, it was found that cultivated P. acutifolius var. acutifolius exhibited better pod production, while other genetic resources showed higher values in some photosynthetic fluorescence parameters. Some wild genetic resources were identified as suitable for improving dry seed production in tepary bean.
Article
Plant Sciences
Millicent R. Smith, Eric Dinglasan, Erik Veneklaas, Jose Polania, Idupulapati M. Rao, Stephen E. Beebe, Andrew Merchant
Summary: This study investigated the physiological and chemical responses of 12 bush bean genotypes to drought and low phosphorus stress. The results showed that both drought and low phosphorus individually or combined led to significant decreases in seed weight and aboveground biomass, as well as reduced photosynthesis and stomatal conductance. Two bean genotypes exhibited superior adaptation to the combined stress conditions. Additionally, the study found that carbon isotope fractionation decreased in response to water deficit treatment and that key nutrients and amino acids showed significant changes in the soluble leaf fraction under combined water deficit and low phosphorus stress.
FRONTIERS IN PLANT SCIENCE
(2022)
Article
Agronomy
Juan Carlos Suarez, Jose Alexander Anzola, Amara Tatiana Contreras, Dina Luz Salas, Jose Ivan Vanegas, Milan O. Urban, Stephen E. Beebe, Idupulapati M. Rao
Summary: This study aims to evaluate the effects of simultaneous intercropping of maize and common bean on their growth, development, and yield, and compare the effects of different fertilizer application methods. The results showed that in the Amazon region of Colombia, simultaneous intercropping can achieve higher grain yield for common bean.
Article
Plant Sciences
Juan Carlos Suarez, Jose Ivan Vanegas, Amara Tatiana Contreras, Jose Alexander Anzola, Milan O. Urban, Stephen E. Beebe, Idupulapati M. Rao
Summary: The evaluation of disease resistance is important for crop improvement. This study used chlorophyll fluorescence parameters to determine the response of the photosynthetic apparatus to natural pathogen infection in common bean lines and identified resistant lines that can be used for improving disease resistance in common bean crops.
Article
Agronomy
Simon Boudsocq, Camille Cros, Philippe Hinsinger, Hans Lambers
Summary: This study evaluated the performance of a cereal-legume mixture on gradients of nitrogen and phosphorus availability. The results showed that intercropping increased biomass and nutrient content of wheat and white lupin compared to sole crops under all levels of nitrogen and phosphorus supply. However, the performance of white lupin decreased with increasing nitrogen and phosphorus supply, leading to a shift from mutualism to competition between the two species, and compensation mechanisms were observed.
Article
Horticulture
Juan Carlos Suarez, Jose Alexander Anzola, Amara Tatiana Contreras, Dina Luz Salas, Jose Ivan Vanegas, Milan O. Urban, Stephen E. Beebe, Idupulapati M. Rao
Summary: The objective of this study was to determine the photosynthetic and grain yield responses of two common bean lines to intercropping with maize under different fertilizer applications in the Colombian Amazon region. The results showed that both bean lines had improved photosynthetic efficiency and yield when intercropped with maize and using organic fertilizer, with significant effects during the pod filling growth stage. This study suggests that small farmers in the Amazon region can benefit from intercropping beans with maize and using organic fertilizer.
SCIENTIA HORTICULTURAE
(2022)
Article
Agronomy
Daniel M. Villegas, Ashly Arevalo, Mauricio Sotelo, Jonathan Nunez, Danilo Moreta, Idupulapati Rao, Manabu Ishitani, Guntur Subbarao, Jacobo Arango
Summary: This study evaluated the forage grass Urochloa humidicola in acid soils of the Orinoquian savannas in Colombia and investigated its relationship with the biological nitrification inhibition (BNI) trait. The research identified two hybrid populations with superior agronomic traits and lower field nitrification rates, which exhibited higher dry matter production, nutrition quality, and nitrogen uptake compared to traditional varieties.
GRASS AND FORAGE SCIENCE
(2023)
Article
Plant Sciences
Xiaoyan Zou, Rui Huang, Linjie Wang, Guihua Wang, Ye Miao, Idupulapati Rao, Guodao Liu, Zhijian Chen
Summary: This study identified SgNramp genes in Stylosanthes guianensis and found that SgNramp1 is responsible for manganese uptake in stylo. The study provides important insights into the function of the Nramp gene family in plants.
FRONTIERS IN PLANT SCIENCE
(2022)
Article
Plant Sciences
Juan Carlos Suarez, Jose Ivan Vanegas, Jose Alexander Anzola, Amara Tatiana Contreras, Milan O. Urban, Stephen E. Beebe, Idupulapati M. Rao
Summary: This study investigates the response of the photosynthetic apparatus to increased disease severity caused by web blight on common bean leaves. The results show a significant impact of web blight on the photosynthetic apparatus, with up to a 50% reduction in energy use dedicated to photosynthesis even at low severity. Fluorescence imaging not only allows for quantifying the impact of web blight on photosynthetic performance, but also enables early detection of disease incidence.
Article
Food Science & Technology
Juan Carlos Suarez, Paola Andrea Polania-Hincapie, Sebastian Saldarriaga, Vivian Yorlady Ramon-Triana, Milan O. O. Urban, Stephen E. E. Beebe, Idupulapati M. M. Rao
Summary: This study evaluated the nutritional quality differences among 112 bean genotypes and identified three interspecific bred lines with superior nutritional quality. Further research is needed to explore the role of these bred lines in different climatic conditions.
Article
Plant Sciences
Juan Carlos Suarez, Milan O. Urban, Jose Alexander Anzola, Amara Tatiana Contreras, Jose Ivan Vanegas, Stephen E. Beebe, Idupulapati M. Rao
Summary: This study evaluated the effects of increased phosphorus supply on the growth and development of two common bean breeding lines grown in acidic soil. The results showed that increasing phosphorus supply improved the agronomic performance and grain yield of both bean lines. The adaptive responses were related to phenological adjustments and heat dissipation strategies, which alleviated the negative effects of high temperature on bean plants.
Article
Food Science & Technology
Glenn Hyman, Aracely Castro, Mayesse Da Silva, Miguel Arango, Jaime Bernal, Otoniel Perez, Idupulapati Madhusudana Rao
Summary: Improving soil organic carbon storage is important for enhancing soil quality and mitigating climate change. This research focused on the potential of storing more soil carbon in tropical grasslands in Colombia's Eastern High Plains. The results showed that improved pastures had higher SOC storage compared to degraded pastures or native savanna. The study also estimated the carbon storage potential across the region and highlighted the importance of appropriate management for sustainable livestock strategies.
FRONTIERS IN SUSTAINABLE FOOD SYSTEMS
(2022)