Article
Agronomy
Yan Zhang, Jiaping Liang, Zhenya Tang, Qiliang Yang
Summary: Panax notoginseng is an important medicinal crop in China, but root rot during the rainy season has hindered its development. This study investigated the effects of rainfall and fertilizer on root exudates, soil bacterial structure, and root rot in P. notoginseng. The results showed that a rain shelter had a greater impact than fertilizer, and the combination of both further reduced root rot incidence. The DWF treatment decreased soil moisture, phenolic acid concentration, and root rot incidence, while promoting the growth of beneficial bacteria, leading to the lowest incidence of root rot.
Article
Plant Sciences
Uday Chand Jha, Harsh Nayyar, Swarup K. Parida, R. Beena, Jiayin Pang, Kadambot H. M. Siddique
Summary: Phosphorus (P) is a crucial nutrient for plant growth, but its sources are non-renewable, raising concerns for sustainable agriculture and food security. Improving plant P-use efficiency (PUE) is necessary for intensive cropping systems, and this review explores various breeding approaches and tools to enhance PUE in grain legumes. The genetic architecture of PUE traits is complex, influenced by both genetics and the environment. Advances in genomics and functional genomics have provided insights into the underlying genetic mechanisms and pathways related to PUE, while novel breeding schemes and tools offer opportunities for designing P-use-efficient cultivars in low-P environments.
ENVIRONMENTAL AND EXPERIMENTAL BOTANY
(2023)
Article
Plant Sciences
Pedro M. de Souza Campos, Sebastian Meier, Arturo Morales, Laura Lavanderos, Javiera Nahuelcura, Antonieta Ruiz, Alvaro Lopez-Garcia, Alex Seguel
Summary: Quinoa is a promising crop that can tolerate different stress conditions and grow in marginal soils with low nutrient content. This study provides new insights into the phosphorus acquisition capacity of quinoa roots, finding that root biomass and morphology play a critical role in quinoa's phosphorus nutrition.
Article
Agronomy
Yikai Zhang, Huizhe Chen, Jing Xiang, Jiahuan Xiong, Yaliang Wang, Zhigang Wang, Yuping Zhang
Summary: This study found that the application of rice-straw biochar can significantly improve phosphorus availability in acidified soil and enhance plant growth and phosphorus accumulation in rice shoots. Biochar affects the chemical balance among different phosphorus fractions, increasing the aluminum-bound phosphate pool, calcium-bound phosphate pool, and reducing the occluded phosphate pool in acidic paddy soil. Additionally, the application of biochar also promotes root growth and citrate exudation, increasing rice's adaptability to low phosphorus supply.
Article
Environmental Sciences
Chong Liu, Wen-Shen Liu, Antony van der Ent, Jean Louis Morel, Hong-Xiang Zheng, Guo-Bao Wang, Ye-Tao Tang, Rong-Liang Qiu
Summary: The study found that the plant Phytolacca americana L. can efficiently hyperaccumulate manganese and rare earth elements, and the accumulation of elements is closely related to soil properties.
Article
Agronomy
Chao Wang, Jianfeng Wang, Xueli Niu, Yang Yang, Kamran Malik, Jie Jin, Chengzhou Zhao, Rong Tang, Rong Zheng, Rong Huang
Summary: Phosphorus (P) addition alters bacterial communities in both rhizosphere and root endosphere of Achnatherum inebrians by changing soil P levels and pH. Additionally, P addition modulates the composition of root exudates, which is mediated by the mutualistic endophyte Epichloe gansuensis.
Article
Agronomy
Chunjie Li, Ellis Hoffland, Wopke van der Werf, Junling Zhang, Haigang Li, Jianhao Sun, Fusuo Zhang, Thomas W. Kuyper
Summary: Complementarity in phosphorus acquisition from different sources and facilitation of P uptake were found between millet and chickpea on low-P soil, but this did not result in significant yield increase in intercropping. However, when phosphorus fertilizer was applied, there was a significant yield gain despite no significant net increase in P uptake by the intercrop compared to sole crops.
FIELD CROPS RESEARCH
(2021)
Review
Plant Sciences
Xue Lei, Yuting Shen, Jianing Zhao, Jiajia Huang, Hui Wang, Yang Yu, Chunwang Xiao
Summary: Root exudates, an important form of material input from plants to soil, play a crucial role in regulating the carbon input and efflux of plant rhizosphere soil and maintaining the carbon and nutrient balance of the ecosystem. However, accurately measuring root exudates in native soils has been challenging. The ecological mechanism of soil organic carbon input and efflux mediated by root exudates is rarely comprehensively analyzed.
Article
Agriculture, Multidisciplinary
Jingwei Wang, Ziyan Yao, Jinxian Han, Wenquan Niu, Yuan Li
Summary: The study demonstrates that soil carbon dioxide and nitrous oxide emissions can be reduced by increasing the burial depth of irrigation pipes. The different pipe burial depths have significant effects on the spatial distribution of soil water-filled pore space, which in turn affects root-soil interactions and soil gas emissions. Increasing burial depth leads to an increase in root forks and fungal diversity at pipe depths of 10 and 20 cm. However, a burial depth of 30 cm results in increased root forks but decreased fungal diversity. These findings provide important insights into controlling soil gas emissions in agroecosystems.
ANNALS OF APPLIED BIOLOGY
(2022)
Article
Plant Sciences
Yan Wang, Kaitai Liu, Yunyun Zhou, Yong Chen, Chenzhong Jin, Yihong Hu
Summary: This study investigated the relationship between phenolic acid biosynthesis and continuous cropping (CC) in Polygonatum odoratum roots through miRNA-seq and RNA-seq analysis. Several key DEGs and DEMs involved in phenolic acid synthesis were identified, providing a foundation for further understanding phenolic acid biosynthesis during CC of P. odoratum roots.
Article
Plant Sciences
Selma Cadot, Valentin Gfeller, Lingfei Hu, Nikhil Singh, Andrea Sanchez-Vallet, Gaetan Glauser, Daniel Croll, Matthias Erb, Marcel G. A. van der Heijden, Klaus Schlaeppi
Summary: Plant-soil feedbacks mediated by benzoxazinoids (BXs) were found to affect maize growth and insect resistance conservatively in two arable soils, but not in a more fertile grassland soil, indicating a soil-type dependence. Wheat also responded to BX-feedbacks, showing a negative growth response conserved between cereals, while insect resistance exhibited opposite patterns. Cultivar-specificity of BX-feedbacks was a key finding, suggesting the potential to optimize crops to avoid negative plant-soil feedbacks in rotations.
PLANT CELL AND ENVIRONMENT
(2021)
Article
Soil Science
Lucas Dantas Lopes, Daniel P. Schachtman
Summary: The composition of the rhizosphere microbiome and bulk soil microbiome change across plant developmental stages. This study analyzed the changes in bacterial community structure in the rhizosphere and bulk soil during three maize growth stages and found significant correlations with temporal changes in soil properties and root metabolites. Soil properties, such as soil N and moisture, explained more variation in the bacterial communities than rhizosphere metabolites. However, shifts in rhizosphere metabolites, particularly sugars and gibberellins, strongly influenced the rhizosphere bacterial community succession. Understanding the ecological processes shaping the belowground microbiomes through time is crucial for developing effective crop management strategies.
APPLIED SOIL ECOLOGY
(2023)
Article
Ecology
Mengfan He, Zhongbao Li, Cheng Chen, Ping Mei
Summary: The soil type and root exudates have an impact on the removal of cadmium and petroleum hydrocarbons in soils. The application of phytoremediation can enhance the removal of cadmium and petroleum hydrocarbons in contaminated soils.
FRONTIERS IN ECOLOGY AND EVOLUTION
(2022)
Article
Plant Sciences
Zhichao Xia, Yue He, Helena Korpelainen, Ulo Niinemets, Chunyang Li
Summary: This study found that female roots release a greater amount and more diverse phenolic allelochemicals, resulting in growth inhibition of same-sex neighbors and deterioration of the soil microorganism community. When grown with males, female growth was consistently enhanced, especially in the roots. The presence of males also reduced phenolic accumulation in the soil, leading to a shift from allelopathic inhibition to chemical facilitation. These effects were enhanced by a favorable soil bacterial community and increased bacterial diversity, which induced changes in the orientation of female roots.
Article
Environmental Sciences
Qihang Liao, Hua Liu, Chao Lu, Juan Liu, Michael Gatheru Waigi, Wanting Ling
Summary: Root exudates can enhance the biodegradation of polycyclic aromatic hydrocarbons in soil by stimulating specific bacterial genera associated with PAH-degrading genes, leading to increased abundance of PAH-degraders and their degrading genes.
SCIENCE OF THE TOTAL ENVIRONMENT
(2021)
Article
Agronomy
Thi Thai Hoa Hoang, Dinh Thuc Do, Huu Ngu Nguyen, Van Binh Nguyen, Surender Mann, Richard W. Bell
Summary: Improving sulfur and water use efficiency for peanut cultivation on sandy soils remains a challenge. By studying partial sulfur balance in irrigated peanut crops in Central Vietnam, it was found that sulfur application rates of 30-45 kg S ha(-1) showed positive sulfur balance and maximum pod yield.
ARCHIVES OF AGRONOMY AND SOIL SCIENCE
(2021)
Article
Environmental Sciences
R. Sharma, M. T. F. Wong, D. M. Weaver, R. W. Bell, Xiaodong Ding, Ke Wang
Summary: Managing phosphorus is a global priority for environmental water quality. A study in Western Australia's Fitzgerald River catchment found that dissolved phosphorus transport was dominant, with physical filtering methods like riparian vegetation proving ineffective in restricting phosphorus transport into streams. Evidence-based fertiliser advice could help reduce dissolved reactive phosphorus losses without yield loss.
SCIENCE OF THE TOTAL ENVIRONMENT
(2021)
Article
Agriculture, Multidisciplinary
M. M. R. Jahangir, R. Begum, M. Jahiruddin, K. Dawar, M. Zaman, R. W. Bell, K. G. Richards, C. Mueller
Summary: In a wheat-mungbean-rice rotation system, nitrous oxide emissions were higher in strip tillage compared to conventional tillage, with the nitrogen fertilizer rate also affecting emissions. However, strip tillage could improve soil aggregation and balance nitrogen and crop yield despite the increased emissions.
AGRICULTURE ECOSYSTEMS & ENVIRONMENT
(2021)
Article
Agronomy
Joshua Neil Monty Philp, Peter S. Cornish, Kim Sok Heng Te, Richard W. Bell, Wendy Vance, Vanndy Lim, Xueling Li, Sukanya Kamphayae, Matthew D. Denton
Summary: The study found that nutrient management on sandy soils for perennial forage grass systems is often unbalanced, leading to deficiencies in potassium and sulfur. Balanced nutrient management practices are necessary to improve productivity and sustainability of perennial forages on tropical sandy soils.
Article
Agronomy
Priya Lal Chandra Paul, Richard W. Bell, Edward G. Barrett-Lennard, Enamul Kabir, Donald S. Gaydon
Summary: Early sowing of sunflower before mid-December in the Ganges Delta can increase yield potential, but comes with risks such as waterlogging and adverse weather conditions. Rice straw mulching can improve soil moisture, reduce salinity, and enhance yield.
AGRONOMY FOR SUSTAINABLE DEVELOPMENT
(2021)
Article
Plant Sciences
Mubshar Hussain, Qifu Ma, Richard Bell
Summary: Low concentrations of sodium can enhance tillering of barley in low potassium soil, while high levels of sodium mainly improve growth by substituting potassium in barley plants grown in low potassium soil.
JOURNAL OF SOIL SCIENCE AND PLANT NUTRITION
(2021)
Article
Agronomy
Priya Lal Chandra Paul, Richard W. Bell, Edward G. Barrett-Lennard, Enamul Kabir
Summary: The study showed that ameliorating soil constraints through mulch application can promote sunflower root growth in the upper soil layer, resulting in increased yield in clay soil.
Article
Plant Sciences
Wendy Vance, Karthika Pradeep, Scott R. Strachan, Simon Diffey, Richard W. Bell
Summary: This study evaluated wild Cicer and Australian chickpea cultivars for aluminum toxicity tolerance, identifying some wild Cicer accessions that were more tolerant than current domestic cultivars. This provides promising germplasm for breeding programs to expand chickpea adaptation to acid soils.
FRONTIERS IN PLANT SCIENCE
(2021)
Article
Agronomy
Mohammad Mobarak Hossain, Mahfuza Begum, Abul Hashem, Md. Moshiur Rahman, Sharif Ahmed, Montaser M. Hassan, Talha Javed, Rubab Shabbir, Adel Hadifa, Ayman E. L. Sabagh, Richard W. Bell
Summary: The study found that reducing soil disruption and increasing residue deposition from previous crops can reduce weed abundance and biomass in wheat-mungbean-winter rice and monsoon rice-mustard-winter rice rotations under conservation agriculture. Furthermore, under conservation agriculture, weed seeds were mainly concentrated in the 0-5 cm soil depth.
Article
Plant Sciences
Nazmus Salahin, Md. Khairul Alam, Sharif Ahmed, Mohammad Jahiruddin, Ahmed Gaber, Walaa F. Alsanie, Akbar Hossain, Richard W. Bell
Summary: Transitioning to minimal tillage and increased crop residue retention in an intensive rice-based cropping system in the Gangetic Plains of South Asia can significantly increase the accumulation of soil organic carbon (SOC) and total nitrogen (TN). Compared to conventional crop establishment practices, zero tillage, strip-tillage, and bed planting can more effectively sequester SOC and TN, leading to higher soil levels of SOC and TN.
Article
Agronomy
Mohammad Mobarak Hossain, Mahfuza Begum, Abul Hashem, Md Moshiur Rahman, Md Enamul Haque, Richard W. Bell
Summary: The shift from conventional tillage to conservation agriculture practices may make weed control more challenging initially, but over time, the weed seedbank may be altered. Continuous conservation agriculture can reduce the size of the weed seedbank, but lead to an increase in specific perennial weed species.
Article
Plant Sciences
Mohammad Asadul Haque, Md Jahiruddin, Md Fazlul Hoque, Md Saiful Islam, Md Baktear Hossain, Md Abdus Satter, Md Enamul Haque, Richard William Bell
Summary: The present study aimed to increase the use efficiency of phosphorus (P) in the acidic Ganges delta floodplain soils by varying the methods and forms of P application. Results showed that furrow placement of P fertilizer gave higher yield and efficiency compared to conventional broadcasting method.
JOURNAL OF PLANT NUTRITION
(2023)
Review
Soil Science
Richard W. Bell, Vang Seng, Wendy H. Vance, Joshua N. M. Philp, Sarith Hin, Veasna Touch, Matthew D. Denton
Summary: Land development is occurring rapidly on sand-dominant soils in the Lower Mekong Basin, but it poses risks of degradation. Agriculture expansion on sloping uplands and intensification of cropping on lowland landscapes are the main factors contributing to these risks. Challenges include drought-prone conditions, nutrient losses, waterlogging, and soil acidity. These constraints limit the productivity and sustainable use of sand profiles. However, site-/soil-specific management strategies, land suitability assessment, and conservation agriculture principles can help overcome these constraints.
Article
Soil Science
Priya Lal Chandra Paul, Richard W. Bell, Edward G. Barrett-Lennard, Enamul Kabir, Mohammed Mainuddin, Khokan Kumer Sarker
Summary: The study found that waterlogging for 24 hours did not affect sunflower at any stage, but waterlogging for 48 and 72 hours suppressed emergence and growth at the 2 and 4-leaf stages. Waterlogging for 72 hours completely prevented emergence for early-sown sunflower, while emergence was less affected for later sowing. Shoot and root dry weight were most affected at the emergence and 2-leaf stages, not at the 4-leaf stage.
Article
Environmental Studies
Nazmus Salahin, Mohammad Jahiruddin, Mohammad Rafiqul Islam, Md Khairul Alam, M. Enamul Haque, Sharif Ahmed, Alaa Baazeem, Adel Hadifa, Ayman El Sabagh, Richard W. Bell
Summary: The field trial conducted in the Gangetic Plains of Bangladesh showed that strip-tillage and bed planting performed better in terms of rice and lentil yield, while strip-tillage and zero tillage were more effective for jute. Increasing residue retention led to higher crop yields across all years. Additionally, minimum soil disturbance practices such as zero tillage and strip-tillage significantly improved soil nutrient concentrations and crop yields compared to conventional tillage.