Article
Plant Sciences
Markus Kraenzlein, Christoph-Martin Geilfus, Bastian L. Franzisky, Xudong Zhang, Monika A. Wimmer, Christian Zoerb
Summary: The study addresses different physiological adaptive responses to drought stress among maize hybrids, revealing that hybrids with higher recovery potential may be more important than those investing more in tolerance mechanisms. Only one hybrid in the study was able to maintain biomass production under drought conditions, and in the scenario of a long drought intermitted by a water-pulse, strategies involving resistance mechanisms or high recovery potential were equally effective.
JOURNAL OF PLANT GROWTH REGULATION
(2022)
Article
Plant Sciences
Markus Kraenzlein, Sandra M. Schmoeckel, Christoph-Martin Geilfus, Waltraud X. Schulze, Michael Altenbuchinger, Holger Hrenn, Ute Roessner, Christian Zoerb
Summary: A study was conducted on two maize hybrids with similar growth but different physiological responses to investigate lipid remodeling strategies in response to repeated drought events. Differences in adaptability, especially in galactolipid metabolism and fatty acid saturation patterns, were observed during recovery, which may lead to membrane dysregulation in the sensitive hybrid. The more drought-tolerant hybrid showed more changes in metabolites and lipids, despite a lower physiological response, while the sensitive hybrid had higher responses but lower significance on the level of individual lipids and metabolites. This study highlights the importance of lipid remodeling during recovery in drought response.
FRONTIERS IN PLANT SCIENCE
(2023)
Article
Agronomy
Maciej T. Grzesiak, Anna Maksymowicz, Katarzyna Hura, Kinga Dziurka, Agnieszka Ostrowska, Stanislaw Grzesiak
Summary: In the natural environment, plants are exposed to various abiotic and biotic stresses simultaneously or sequentially. However, little is known about the combined effects of these stresses on plants. This study investigated the effects of soil compaction and drought on maize hybrids through measurements of gas exchange, chlorophyll fluorescence parameters, leaf area, leaf greening, leaf water deficit, leaf water potential, and membrane injury. The results showed that high soil compaction led to a decrease in most measured traits, while drought had a greater impact, especially on sensitive hybrids. The study also revealed the genetically determined variability of tolerance to these stresses and suggested potential criteria for hybrid selection.
JOURNAL OF AGRONOMY AND CROP SCIENCE
(2023)
Article
Agronomy
Tomasz Warzecha, Roman Bathelt, Edyta Skrzypek, Marzena Warchol, Jan Bocianowski, Agnieszka Sutkowska
Summary: The environmental conditions have an impact on the growth and productivity of crop plants. Among the various factors, drought stress is identified as one of the major threats to plant productivity. This research focused on evaluating the physiological, biochemical, and agronomic parameters of OMA plants under soil drought conditions. The results showed that most of the examined lines exhibited reduced photosynthetic pigment content, PSII photosystem activity, and yield-related traits under drought stress. However, two lines (9 and 78b) were found to retain high yielding potential compared to the commercial cv. Bingo under drought stress.
Review
Agronomy
Adnan Rasheed, Hongdong Jie, Basharat Ali, Pengliang He, Long Zhao, Yushen Ma, Hucheng Xing, Sameer H. Qari, Muhammad Umair Hassan, Muhammad Rizwan Hamid, Yucheng Jie
Summary: Maize is a crucial cereal crop that provides essential nutrients to humans and livestock. Drought stress impairs maize growth and yield by affecting various functions. The increasing threats of drought stress have significant implications for global food security. Molecular breeding techniques have enabled researchers to better understand the genetic control of drought tolerance in maize, but further research is still needed to fully comprehend the mechanism.
Article
Agronomy
Jin Zhao, Thomas H. Marek, Ke Liu, Matthew Tom Harrison, Qingwu Xue
Summary: This study compares conventional and drought-tolerant hybrids in terms of yield and water-use efficiency under drought conditions in the Texas High Plains region. The results show that drought-tolerant hybrids exhibit lower yield penalties and achieve greater yield gains and water savings through improved water productivity. These findings highlight the potential of drought-tolerant hybrids for increasing yield and conserving water resources.
AGRICULTURAL WATER MANAGEMENT
(2022)
Article
Plant Sciences
Yifan Wang, Haoxue Guo, Xi Wu, Jiarui Wang, Hongjie Li, Renhe Zhang
Summary: In this study, leaf transcriptomics and physiological traits of two maize genotypes with differing drought resistance were analyzed. The results identified numerous differentially expressed genes (DEGs) involved in oxidative defense, photosynthesis, phytohormone response, and other pathways. The higher drought tolerance of one genotype (SD609) compared to the other (SD902) can be attributed to stronger stress defense capabilities, IAA signal transduction, and more stable photosynthesis. The findings provide new insights into the molecular mechanisms of maize against drought stress and suggest potential candidate genes for breeding drought-tolerant maize cultivars.
FRONTIERS IN PLANT SCIENCE
(2022)
Article
Genetics & Heredity
Abebe Menkir, Ibnou Dieng, Silvestro Meseka, Bunmi Bossey, Wende Mengesha, Oyekunle Muhyideen, Priscillia F. Riberio, Mmadou Coulibaly, Abdoul-Madjidou Yacoubou, Folusho A. Bankole, Gloria Boakyewaa Adu, Tayo Ojo
Summary: This study utilized a sequential selection scheme to breed maize hybrids with both drought tolerance and Striga resistance, effectively addressing the issue of yield losses caused by drought and Striga infestation in sub-Saharan Africa. The results demonstrate the successful development of dependable hybrids that can reduce food deficits in rural communities experiencing these two stresses.
FRONTIERS IN GENETICS
(2022)
Article
Agronomy
Juan M. Arjona-Lopez, Lidia Aparicio-Duran, Frederick G. G. Gmitter Jr, Estefania Romero-Rodriguez, Jude W. Grosser, Aurea Hervalejo, Francisco J. Arenas-Arenas
Summary: This study assessed the response of three HLB-tolerant citrus rootstocks to different water stress conditions and found that drought had the most limiting effect on the growth of citrus crops. Carrizo citrange was identified as the most suitable rootstock under drought conditions.
Article
Agriculture, Multidisciplinary
Joe D. Luck, Rachel Stevens, John T. Evans IV, Laura J. Thompson
Summary: Multi-hybrid planting has the potential to reduce yield variation caused by soil, disease, and environmental factors. A research trial conducted in eastern Nebraska examined the placement of offensive and defensive maize hybrids based on soil type and water availability. Results showed that planting a single hybrid optimized economic return, although planting a defensive hybrid had no negative consequence in some fields and provided yield protection in dry years. Zone scenarios were created for each field to determine the optimal hybrid placement for each growing season.
PRECISION AGRICULTURE
(2023)
Article
Plant Sciences
Sheng Ying, Brandon Webster, Lina Gomez-Cano, Kiran-Kumar Shivaiah, Qianjie Wang, Linsey Newton, Erich Grotewold, Addie Thompson, Peter K. Lundquist
Summary: Maize production systems heavily rely on managed inputs, such as fertilizers, to maximize growth and yield. This study investigates the physiological responses of maize hybrids to nitrogen (N) supplementation in field conditions. The results reveal that maize perceives the lack of N as a stress and responds to N supplementation with prolonged vegetative growth. The study also identifies potential biomarkers of N status.
Article
Biochemistry & Molecular Biology
Joram Kiriga Waititu, Xingen Zhang, Tianci Chen, Chunyi Zhang, Yang Zhao, Huan Wang
Summary: This study compared the transcriptome and physiological responses of drought-tolerant and susceptible maize inbred lines at the seedling stage, revealing higher water content and lower electrolyte leakage and malondialdehyde levels in the tolerant line. RNA-seq analysis identified key drought-responsive genes related to cytoskeleton, photosynthesis, and other pathways. The findings provide a comprehensive understanding of the molecular mechanisms mediating drought stress tolerance in maize seedlings.
INTERNATIONAL JOURNAL OF MOLECULAR SCIENCES
(2021)
Article
Plant Sciences
Olatunde A. Bhadmus, Baffour Badu-Apraku, Oyenike A. Adeyemo, Adebayo L. Ogunkanmi
Summary: An increase in global temperature and drought is expected in sub-Saharan Africa due to climate change. Early white quality protein maize hybrids show potential in mitigating the effects of climate change, especially under conditions of drought, heat stress, and low soil nitrogen. Research in Nigeria evaluated various QPM hybrids and identified gene actions affecting grain yield under different environmental stresses, with TZEQI 6 x TZEQI 228 and TZEQI 39 x TZEQI 44 showing highest yields in stress environments. Hybrid TZEQI 210 x TZEQI 188 was identified as the most stable across various environments and recommended for further testing and commercialization in SSA.
Article
Agronomy
Khalil M. Saad-Allah, Afaf A. Nessem, Mohsen K. H. Ebrahim, Dina Gad
Summary: This study investigated the metabolic and physiological adjustments, as well as gene expression patterns, in five maize genotypes with varying drought tolerance. The results showed that water stress reduced plant growth and yield characteristics, but also triggered adaptive mechanisms such as increased concentration of antioxidants and metabolic activities. The expression of drought-responsive genes was associated with the severity of water stress and varied among genotypes, with G10 and G123 showing the highest drought resistance.
Article
Environmental Sciences
Ali Khatibi, Saeed Omrani, Ali Omrani, Seyed Habib Shojaei, Seyed Mohammad Nasir Mousavi, Arpad Illes, Csaba Bojtor, Janos Nagy
Summary: This study investigated the response of maize hybrids to drought stress and identified the most drought-tolerant cultivar. The results showed that the SC647 and KSC704 hybrids exhibited good performance and drought tolerance.
Review
Agronomy
Osler A. Ortez, Anthony J. McMechan, Thomas Hoegemeyer, Ignacio A. Ciampitti, Robert Nielsen, Peter R. Thomison, Roger W. Elmore
Summary: This article reviews the symptoms, causes, and development timing of abnormal ear development in corn. It also describes the widespread symptoms that occurred in 2016. Limited information and unknown causes emphasize the need for more research in this area. Abnormal ear development in corn is a response to complex interactions among genetics, environment, and management practices. It is detrimental to yield and quality, making mitigation crucial for efficient corn systems, crop resiliency, and sustainability.
Article
Agronomy
Paula A. A. Demarco, Laura Mayor, Jose L. Rotundo, P. V. Vara Prasad, Geoffrey P. P. Morris, Javier A. A. Fernandez, Santiago Tamagno, Graeme Hammer, Carlos D. D. Messina, Ignacio A. A. Ciampitti
Summary: Understanding the physiological changes in response to long-term selection can inform breeding decisions and accelerate genetic gain for yield. This study characterized changes in yield-related physiological traits for grain sorghum hybrids released between 1963 and 2017. The findings suggest that water-soluble carbohydrates dynamics play a critical role in past genetic yield gain in sorghum and should be considered for future improvements.
Article
Agronomy
Laura Mayor, Paula Demarco, Sara Lira, Yinan Fang, Tabare Abadie, Brenda L. L. Gambin, Graeme Hammer, Ignacio Ciampitti, Mark Cooper, Carlos Messina
Summary: This article reports the rate of sorghum genetic gain in a commercial breeding program in the United States and provides evidence that a modest yield improvement is an important factor limiting land allocation to this crop. The study shows a positive rate of genetic gain of 2.63 g m(-2) y(-1) on average across three different maturity groups grown in the United States. However, these rates are insufficient to reverse the negative trend in planted area.
Article
Environmental Sciences
Monica B. Olson, Melba M. Crawford, Tony J. Vyn
Summary: The overuse of nitrogen in food production can have negative impacts on health and the environment. This study investigated the use of remote sensing to improve nitrogen efficiency measures in maize production. The researchers found that hyperspectral imaging accurately predicted nitrogen concentration and conversion efficiency, benefiting genotype selection for breeding programs.
Article
Environmental Sciences
Adrian Lapaz Olveira, Hernan Sainz Rozas, Mauricio Castro-Franco, Walter Carciochi, Luciana Nieto, Monica Balzarini, Ignacio Ciampitti, Nahuel Reussi Calvo
Summary: Corn nitrogen concentration can be predicted through data fusion of Sentinel-2 and Sentinel-1 sensors, which allows for monitoring of plant nitrogen status. Experiments in the Pampas region of Argentina showed that data fusion resulted in more accurate predictions of corn nitrogen concentration compared to spectral band combinations.
Article
Green & Sustainable Science & Technology
Emmanuela van Versendaal, Ana J. P. Carcedo, Eric Adee, Gretchen Sassenrath, Scott Dooley, Jane Lingenfelser, Ignacio A. A. Ciampitti
Summary: Optimizing planting date by maturity group (PD x MG) is crucial for increasing productivity and reducing production risks. This study analyzed the optimal combinations of soybean PD x MG management in the central-eastern region of Kansas for current and future weather conditions. Three geographical clusters were defined within the region, and the Agricultural Production Systems Simulator was used to explore PD x MG combinations. Early planting dates resulted in higher yields but reduced stability over time, while late planting dates had a significant reduction in yields under current weather conditions. Longer maturity groups mitigated the yield penalty when planting was delayed, but did not always maximize yields.
Article
Agronomy
Yesica D. Chazarreta, Ana J. P. Carcedo, Santiago Alvarez Prado, Ignacio Massigoge, Juan I. Amas, Javier A. Fernandez, Ignacio A. Ciampitti, Maria E. Otegui
Summary: The aim of this study was to identify weather variables affecting grain dry-down coefficient and develop models for predicting kernel moisture loss and harvest readiness. The models, based on solar radiation and VPD during pre-and post-maturity period, showed high accuracy in predicting kernel moisture and harvest readiness under different sowing date environments.
AGRICULTURAL AND FOREST METEOROLOGY
(2023)
Article
Environmental Sciences
Josefina Lacasa, Carlos D. Messina, Ignacio A. Ciampitti
Summary: Crop yield is influenced by genotype, management, and environment, and farmers' decision-making is often sub-optimal due to climate variability. Sub-seasonal climate predictions have the potential to improve risk analysis and decision-making, but frameworks integrating weather uncertainty are lacking. This study aims to design a model that predicts the economic optimum plant density based on weather variables and analyze its predictive performance and sources of uncertainty.
ENVIRONMENTAL RESEARCH LETTERS
(2023)
Article
Agronomy
Lincon Stefanello, Raissa Schwalbert, Rai Schwalbert, Adriele Tassinari, Luana Garlet, Lessandro De Conti, Marlise Ciotta, Carlos Ceretta, Ignacio Ciampitti, Gustavo Brunetto
Summary: This study aims to establish critical levels (CL) for phosphorus (P) in soil and grape leaves at different growth stages and propose P maximum technical efficiency (MTE) rates for white and red grapevines grown in sandy soils in South Brazil, using a Bayesian approach. The results provide the first CL for grapevine leaves at flowering and veraison in Brazil and propose MTE rates for specific grapevine cultivars. This new information can help optimize P management and reduce fertilizer usage in vineyards.
EUROPEAN JOURNAL OF AGRONOMY
(2023)
Article
Agronomy
Josefina Lacasa, David Makowski, Trevor Hefley, Javier Fernandez, Emmanuela van Versendaal, Gilles Lemaire, Ignacio Ciampitti
Summary: The critical nitrogen dilution curve (CNDC) is a crucial model for diagnosing crop nitrogen status. It relates plant N content to plant biomass under optimal conditions, estimating the critical %N (%NC) needed for maximum biomass. Two frameworks, sequential and hierarchical, have been proposed for estimating CNDC parameters. Comparing the methods, the hierarchical framework outperforms the sequential framework, resulting in more accurate estimates and lower risk of overfertilization.
EUROPEAN JOURNAL OF AGRONOMY
(2023)
Article
Agriculture, Multidisciplinary
Carlos M. Hernandez, Adrian Correndo, Peter Kyveryga, Aaron Prestholt, Ignacio A. Ciampitti
Summary: Using remote sensing satellite data, it is possible to spatially predict soybean seed protein and oil concentrations at the field level before harvest. This is important for farmers, agronomists, and commodity traders to segregate quality and gain economic advantage in domestic and global markets.
COMPUTERS AND ELECTRONICS IN AGRICULTURE
(2023)
Article
Agronomy
Ignacio Massigoge, Ana Carcedo, Jane Lingenfelser, Trevor Hefley, P. V. Vara Prasad, Dan Berning, Sara Lira, Carlos D. Messina, Charles W. Rice, Ignacio Ciampitti
Summary: Region-specific guidelines for maize management are essential in the US Great Plains. This study aimed to define maize yield environments, explore optimal planting date and hybrid maturity combinations, and identify different windows for maximizing yields. Historical weather data from 70 sites were used to analyze maize field dataset and simulate yields using the APSIM model. Results showed that long-maturing hybrids achieved greater yields, while late planting increased stability in central environments. Short-season hybrid maturities allowed for anticipation of physiological maturity date without yield penalties. The study suggests adopting region-specific guidelines to optimize yield and intensify maize-based farming systems.
EUROPEAN JOURNAL OF AGRONOMY
(2023)
Article
Multidisciplinary Sciences
Maria P. Rodriguez, Joaquin Vargas, Adrian A. Correndo, Ana J. P. Carcedo, Walter D. Carciochi, Hernan R. Sainz Rozas, Pablo A. Barbieri, Ignacio A. Ciampitti
Summary: This meta-analysis examines the impact of hairy vetch as a cover crop on maize yield. The results show that hairy vetch has a positive effect on maize yield under non-N fertilization, while the impact on N-fertilized maize is more neutral or slightly positive. The accumulation of nitrogen in hairy vetch and the nitrogen rate have a significant influence on maize yield.
Article
Spectroscopy
Agustina M. Goni, Javier A. Fernandez, Paula A. Demarco, Mario A. Secchi, Ana J. P. Carcedo, Ignacio A. Ciampitti
Summary: Near infrared spectroscopy (NIRS) was evaluated as a rapid and non-destructive method for determining the concentration of water-soluble carbohydrates (WSC) in stem fractions for winter canola, maize, and sorghum crops. The study confirmed the reliability of NIRS through comparison with chemical lab analysis and identified the critical spectral range.
SPECTROCHIMICA ACTA PART A-MOLECULAR AND BIOMOLECULAR SPECTROSCOPY
(2024)
Review
Agronomy
Osler A. Ortez, Anthony J. McMechan, Thomas Hoegemeyer, Ignacio A. Ciampitti, Robert L. Nielsen, Peter R. Thomison, Lori J. Abendroth, Roger W. Elmore
Summary: Abnormal ear development in corn has been reported for over 100 years. Recent reports have identified abnormal multiple ears per stalk node, barbell ears, and short husks in cornfields in certain regions of the United States. These abnormalities appear to be caused by stress conditions such as extreme weather and limited solar radiation, as well as responses to plant growth regulators. The accumulation of these effects may lead to the abortion of primary ears and the development of secondary abnormal ears. The underlying causes and impacts of these abnormalities on grain quality and yield, as well as their effects on other processes, require further research.
CROP FORAGE & TURFGRASS MANAGEMENT
(2022)
