Results 41 to 50 of about 4,456 (234)

Breeding switchgrass for reduced nitrogen demand

Grassland Research, EarlyView.
Breeding has improved switchgrass biomass yield, but productivity is still heavily dependent on nitrogen fertilizer application. The genetic diversity needed to improve nitrogen use efficiency of switchgrass remains underused, mainly because of the slow and laborious breeding process, thus leaving the crop's high nitrogen demand as a major barrier to ...
Michael D. Casler, Prabin Bajgain
wiley   +1 more source

Experimental study on dynamic characteristics of calcareous sand-gravel mixtures from islands in the South China Sea

Yantu gongcheng xuebao
In the construction process of reef islands in the South China Sea, the upper reclamation foundation materials exist in the form of a combination of large calcareous gravels and small calcareous sand mixed in random proportions.
WU Yang 1, WU Yihang 1, 2, MA Linjian 3, CUI Jie 1, LIU Jiankun 2, DAI Beibing 2
doaj   +1 more source

Evaluation of the effect of natural seawater solidifying calcareous sand based on MICP

Rock and Soil Mechanics, 2021
The natural seawater was used to carry out the experiment of microbial culture and microbial-induced calcium carbonate precipitation (MICP) to solidify calcareous sand.
DONG Bo-wen, LIU Shi-yu, YU Jin, XIAO Yang, CAI Yan-yan, TU Bing-xiong   +5 more
doaj   +1 more source

Ostracod faunal and geochemical evidence for the impact of Hoxnian (MIS 11c) sea levels in eastern England

Journal of Quaternary Science, EarlyView.
ABSTRACT Marine isotope substage 11c (~426–366 ka) is widely regarded as the most recent Pleistocene interglacial that is broadly analogous to the Holocene. The timing and magnitude of sea‐level changes during MIS 11 have been much debated, particularly concerning whether sea levels were significantly higher than during the Holocene. Empirical evidence
Tom S. White, Jonathan A. Holmes, David J. Horne, David R. Bridgland   +3 more
wiley   +1 more source

Three-Dimensional Discrete Element Analysis of Crushing Characteristics of Calcareous Sand Particles

Geofluids, 2022
Particle crushing is an important factor affecting the mechanical characteristics of calcareous sand, but at present, most of relative studying methods rely on physical experiments.
Zucheng Lu, Heying Hou, Pengming Jiang, Qing Wang, Tianxiang Li, Zhuojie Pan   +5 more
doaj   +1 more source

Experimental study on characteristics of pore water pressure and dissipated energy of saturated calcareous sand under complex loading conditions

Yantu gongcheng xuebao, 2023
Calcareous sand, the special soil, is the main material for the filling of islands and reefs in the South China Sea, which is biogenic sediments and skeletal remains of marine organisms. It is of great importance to study its dynamic characteristics.
LI Baojian 1, 3, WANG Zhe 2, LÜ Guoer 1, PAN Kun 2, YANG Zhongxuan 3, GONG Xiaonan 3
doaj   +1 more source

Effect of bio‐fertilization and edapho‐climatic conditions on chickpea nodulation, grain yields, and seed protein in a Mediterranean context: a meta‐analysis approach

Journal of the Science of Food and Agriculture, EarlyView.
Abstract Chickpeas (Cicer arietinum L.) serve as a protein‐rich staple, particularly in Mediterranean countries, where they are often grown in marginal and water‐stressed areas. This meta‐analysis synthesized evidence from peer‐reviewed publications across Mediterranean countries to assess how chickpea rhizobial inoculation influences chickpea ...
Amira Hachana, Amir Souissi, Lewis Ziska, Katherine Morgan, Carina Yiu, Issam Achour, Asma Bouatrous, Imen Hemissi, Hanen Arfaoui, Anissa Riahi, Manel Bouraoui, Bouaziz Sifi   +11 more
wiley   +1 more source

Assessing Soil Erosion in a Typical Karst Region: A Model Improved by Bedrock Exposure Rate in Guizhou Province

Land Degradation &Development, EarlyView.
ABSTRACT Soil erosion is a major environmental challenge in karst regions of Southwest China, where thin soils and high bedrock exposure accelerate land degradation. This study modified the RUSLE model by incorporating bedrock exposure rate to improve erosion simulation in Guizhou Province from 2000 to 2024.
Ning Niu, Jihui Fan, Yiying Li
wiley   +1 more source

Shear breakage characteristics of calcareous sand particles under different normal pressures

Shuili Shuiyun Gongcheng Xuebao, 2018
The particles of the calcareous sands are easily broken under the conditions of high stresses. Consequently, the mechanical properties of the calcareous sands will change under the action of different pressures.
QI Yongzheng, YUAN Zirui, YANG Yongheng
doaj   +1 more source

Pedo‐Climatic Controls on Soil Health Recovery Across Cultivation Chronosequences: Hydraulic Conductivity as a Potential Link Between Soil Structure, Microbial Biomass, and Nutrient Availability

Land Degradation &Development, EarlyView.
ABSTRACT Long‐term cultivation can improve soil health, but recovery may not follow the same pathway across contrasting soil and climate conditions. A key unresolved question is whether soil health recovery is mainly associated with the release of physical–chemical constraints or with the gradual rebuilding of carbon, microbial biomass, and nutrient ...
Manal A. Alnaimy, Manas B. Kezekia, Khaled G. Soliman, EL‐Sayed A. EL‐Naka, Ahmed Salah Elrys   +4 more
wiley   +1 more source