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Full-Text Articles in Plant Sciences
Performance Of Corn Hybrids With Contrasting Maturity In Northeastern Kansas, L. N. Lingua, I. Massigoge, A. J. P. Carcedo, I. A. Ciampitti
Performance Of Corn Hybrids With Contrasting Maturity In Northeastern Kansas, L. N. Lingua, I. Massigoge, A. J. P. Carcedo, I. A. Ciampitti
Kansas Agricultural Experiment Station Research Reports
Corn (Zea maysL.) hybrid selection is one of the most important agricultural management decisions made by farmers. Both genetic yield potential and adaptation to the local environment vary widely across corn hybrids, and have a direct impact on yield and input costs. This study compared the performance of corn hybrids with contrasting comparative relative maturity (CRM, referring to their growth cycle), to evaluate their differences in crop phenology, grain yield and its components—grain number and grain weight. The field experiment was conducted during the 2022 growing season in Manhattan, KS (U.S.), testing five commercial corn hybrids with contrasting …
How Relevant Is High-Cadence Earth Observation For Maize Crop Phenology Classification?, L. Nieto, R. Houborg, A. Zajdband, A. Jumpasut, P. V. Vara Prasad, B. J. S. C. Olson, I. A. Ciampitti
How Relevant Is High-Cadence Earth Observation For Maize Crop Phenology Classification?, L. Nieto, R. Houborg, A. Zajdband, A. Jumpasut, P. V. Vara Prasad, B. J. S. C. Olson, I. A. Ciampitti
Kansas Agricultural Experiment Station Research Reports
Crop phenology can be defined as the study of biological processes such as emergence, flowering, and senescence that are associated with and affected by environmental growing conditions. The ability to reliably detect crop phenology and its spatial-temporal variability is critical for farmers, policymakers, and government agencies, since it has implications for the entire food chain. Currently, two methods are the most used to report crop phenology. Land surface phenology provides insight into the overall trend, whereas USDA-NASS weekly reports provide insight into the development of specific crops at the regional level. High-cadence earth observations may be able to improve the …
Yield Response To Nitrogen Management In A Corn-Soybean Sequence In North Central Kansas – 2021 Season, A. A. Correndo, O. Lanza Lopez, L. F. A. Almeida, I. A. Ciampitti
Yield Response To Nitrogen Management In A Corn-Soybean Sequence In North Central Kansas – 2021 Season, A. A. Correndo, O. Lanza Lopez, L. F. A. Almeida, I. A. Ciampitti
Kansas Agricultural Experiment Station Research Reports
The aim of this study was to evaluate the response of corn (Zea maysL.) grain yield to nitrogen (N) fertilizer application and its residual effect on soybean [Glycine max(L.) Merr.] seed yield. During the 2021 growing season, a corn-soybean rotation study was continued at Scandia, KS (USA), evaluating the effect of five N fertilizer rates (0, 53, 107, 161, and 214 lb N/a) applied in corn under both dryland and irrigated conditions. Average corn grain yields ranged from 124 to 147 bu/a for dryland, and from 159 to 203 bu/a for irrigated conditions. However, no significant …
Effects Of Zeolite On Agronomic And Biochemical Traits And Yield Components Of Zea Mays L. Cv Simone Under Drought Stress Condition, Mehri Salehi, Mahdi Zare, Forood Bazrafshan, Ahmad Aien, Bahram Amiri
Effects Of Zeolite On Agronomic And Biochemical Traits And Yield Components Of Zea Mays L. Cv Simone Under Drought Stress Condition, Mehri Salehi, Mahdi Zare, Forood Bazrafshan, Ahmad Aien, Bahram Amiri
The Philippine Agricultural Scientist
One of the new strategies to increase the effectiveness of chemical fertilizers, prevent the waste of chemical fertilizers, and increase the yield of agricultural products, is the use of natural compound such as zeolite. This study was conducted to investigate the effects of zeolite (0, 5, 10, and 15 t ha-1) on agronomic and biochemical responses as well as yield components of maize (cv. Simon) under normal (90% field capacity), moderate (75% FC), and severe (60% FC) drought stress conditions during 2017-2019. The results showed that moderate and severe drought stress significantly decreased plant height (10.9% and 19.7%, …
Yield Response To Nitrogen Management In A Corn-Soybean Sequence In North Central Kansas, A. A. Correndo, I. A. Ciampitti
Yield Response To Nitrogen Management In A Corn-Soybean Sequence In North Central Kansas, A. A. Correndo, I. A. Ciampitti
Kansas Agricultural Experiment Station Research Reports
The aim of this study was to evaluate the response of corn (Zea mays L.) grain yield to nitrogen (N) fertilizer application and its residual effect on soybean (Glycine max(L.) Merr.) seed yield. During the 2020 growing season, a corn-soybean rotation study was continued at Scandia, KS (USA), evaluating five N fertilizer rates in corn under both dryland and irrigated conditions. Average corn grain yields ranged from 110 to 206 bu/a for dryland, and from 198 to 221 bu/a for irrigated conditions. Under dryland, maximum corn yields were achieved with an apparent soil N supply level …
Corn Grain Weight: Dependence Upon Nitrogen Supply And Source-Sink Relations, J. A. Fernandez, I. A. Ciampitti
Corn Grain Weight: Dependence Upon Nitrogen Supply And Source-Sink Relations, J. A. Fernandez, I. A. Ciampitti
Kansas Agricultural Experiment Station Research Reports
From a yield component perspective, final grain yield in corn (Zea maysL.) is the result of the number of grains per unit area and their final grain weight. The understanding of grain weight parameters, the rate and duration of grain growth, is critical to improve our rational design of management practices and breeding strategies. In this study, we attempted to determine the effect on grain weight and grain-filling parameters of source-sink modifications (i.e. the amount of assimilates available per grain) during linear grain fill under contrasting levels of nitrogen (N) fertilization in two commercially available US corn hybrids. …
Dynamics Of Post-Flowering Nitrogen Uptake And Nitrogen Recovery Efficiency Using 15n Isotope Labeling In Corn, J. A. Fernandez, J. B. Nippert, I. A. Ciampitti
Dynamics Of Post-Flowering Nitrogen Uptake And Nitrogen Recovery Efficiency Using 15n Isotope Labeling In Corn, J. A. Fernandez, J. B. Nippert, I. A. Ciampitti
Kansas Agricultural Experiment Station Research Reports
In corn (Zea maysL.), breeding and selection for grain yield over time has been accompanied by a simultaneous increase in plant nitrogen (N) uptake. The understanding of plant N dynamics has attracted attention due to the environmental concerns related to N losses coming from fertilization. This research study was implemented to 1) describe N uptake and allocation dynamics, and 2) quantify fertilizer recovery efficiency across late-N strategies. Two field experiments (one under irrigation and one rainfed) were conducted at the Ashland Bottoms Research Farm, KS, during 2017. Three hybrids with different year of release and three N scenarios …
Corn Yield Response To Nitrogen In North-Central Kansas, A. A. Correndo, I. A. Ciampitti
Corn Yield Response To Nitrogen In North-Central Kansas, A. A. Correndo, I. A. Ciampitti
Kansas Agricultural Experiment Station Research Reports
The aim of this study was to evaluate the response of corn (Zea maysL.) grain yield to nitrogen (N) fertilizer. During the 2019 cropping season, an N rate experiment in corn was established in Scandia, KS, evaluating five N fertilizer rates as UAN (28-0-0) under both dryland and irrigated conditions. Average yields ranged from 138 to 236 bu/a under rainfed and from 153 to 249 bu/a for irrigated conditions. Under both dryland and irrigated conditions, maximum yields were achieved with an N rate of about 161 lb/a. Total N supply was calculated as N at planting plus fertilizer …
The Endogenous L-Cysteine Desulfhydrase And Hydrogen Sulfide Participate In Supplemented Phosphorus-Induced Tolerance To Salinity Stress In Maize (Zea Mays) Plants, Cengi̇z Kaya, Muhammad Ashraf
The Endogenous L-Cysteine Desulfhydrase And Hydrogen Sulfide Participate In Supplemented Phosphorus-Induced Tolerance To Salinity Stress In Maize (Zea Mays) Plants, Cengi̇z Kaya, Muhammad Ashraf
Turkish Journal of Botany
Although phosphorus supplementation (SP) has been shown to improve salinity tolerance in plants, crosstalk between hydrogen sulfide (H2S) or L-cysteine desulfhydrase (LDES) and SP-induced salinity tolerance needs to be elucidated. Thus, prior to initiation of stress treatment, young seedlings were transferred to aqueous solution containing the scavenger of H2S, 0.1 mM hypotaurine (HT), or the inhibitor of LDES, 0.3 mM DL-propargylglycine (PAG), for 12 h. The plants grown under control (no NaCl added) or salinity stress (SS; 100 mM NaCl) were then supplemented with SP (2.0 mM in total) as KH2PO4 for 5 weeks. SS caused a significant decrease in …
Regulation Of Antioxidant Activity In Maize (Zea Mays L.) By Exogenous Application Of Sulfur Under Saline Conditions, Alia Riffat, Muhammad Sajid Aqeel Ahmad
Regulation Of Antioxidant Activity In Maize (Zea Mays L.) By Exogenous Application Of Sulfur Under Saline Conditions, Alia Riffat, Muhammad Sajid Aqeel Ahmad
Turkish Journal of Botany
One of the major effects of salt stress is high production of reactive oxygen species that adversely affect essential cellular metabolic pathways. To limit the elevated production of reactive oxygen species, plants stimulate various types of antioxidants. In this study, sulfur was used to induce tolerance against oxidative stress through modulation of the activities of various antioxidants. Two maize genotypes (Agatti 2003 and Pak Afgoi 2003) were subjected to different salinity (25 and 75 mM) and sulfur (40 and 80 mM) treatments and a control treatment. Various antioxidants and oxidative stress determinants in maize organs (leaf, shoot, and root) were …
Effect Of Late Nitrogen Fertilization On Grain Yield And Grain Filling In Corn, J. A. Fernandez, I. A. Ciampitti
Effect Of Late Nitrogen Fertilization On Grain Yield And Grain Filling In Corn, J. A. Fernandez, I. A. Ciampitti
Kansas Agricultural Experiment Station Research Reports
For decades, yield improvement in corn has been accompanied by an increase in plant nitrogen (N) uptake. Modern hybrids are absorbing more N during reproductive stages, while delaying N remobilization to the grain for later in the growing season. To evaluate the effect of late-season N applications in distinct corn genotypes, grain yield and grain filling parameters were evaluated in field experiments under early and late N regimes during 2017 and 2018 growing seasons. Hybrids with different release years (3394, 1990s; P1151, 2000s; and P1197, 2016) and contrasting N application scenarios (including a zero-N control) were evaluated at the Kansas …
Pursuing The Best Management Strategies For Corn-Soybean Rotation Systems In North Central Kansas, A. A. Correndo, I. A. Ciampitti
Pursuing The Best Management Strategies For Corn-Soybean Rotation Systems In North Central Kansas, A. A. Correndo, I. A. Ciampitti
Kansas Agricultural Experiment Station Research Reports
The aim of this study was to evaluate different management strategies for improving yield productivity in corn (Zea maysL.) and soybean [Glycine max(L.) Merr.] rotation systems. During the 2018 season, a long-term corn-soybean experiment was continued in Scandia, KS, evaluating five management strategies under rainfed and irrigated conditions. For corn, average yields were 146 bu/a and 172 bu/a under rainfed and irrigated conditions, respectively. For soybean, rainfed and irrigated average seed yields were similar (47–50 bu/a), attributed to herbicide injury on the irrigated plots. For both crop and water scenarios, intensifying the crop management (by modifying …
Promotive Effect Of Exogenously Applied Thiourea On Key Physiological Parametersand Oxidative Defense Mechanism In Salt-Stressed Zea Mays L. Plants, Cengi̇z Kaya, Muhammad Ashraf, Osman Sönmez
Promotive Effect Of Exogenously Applied Thiourea On Key Physiological Parametersand Oxidative Defense Mechanism In Salt-Stressed Zea Mays L. Plants, Cengi̇z Kaya, Muhammad Ashraf, Osman Sönmez
Turkish Journal of Botany
A greenhouse experiment was conducted to examine the alleviating role of thiourea (TU) on antioxidants and some vital physiological attributes in salt-stressed plants of two maize cultivars. The maize cv. DK 5783 performed better than cv. Apex 836 in an initial experiment. Of the six TU levels used in the initial experiment, 400 and 500 mg L-1 were chosen for subsequent studies. The two cultivars were subjected to saline stress (100 mM NaCl) and two levels of TU were applied presowing or as foliage spray. Salt stress suppressed total biomass, maximum fluorescence yield (Fv/Fm), chlorophyll, and leaf water potential ($\Psi$w), …
Genetic Dissection Of The Morphological Evolution Of Maize, John Doebley
Genetic Dissection Of The Morphological Evolution Of Maize, John Doebley
Aliso: A Journal of Systematic and Floristic Botany
Maize (Zea mays ssp. mays) and its wild progenitor, teosinte (Z. mays ssp. parviglumis) differ dramatically in inflorescence and plant architecture despite the fact that their evolutionary divergence occurred within the past 10,000 years or less. To elucidate the genetic control of the morphological differences between maize and teosinte, my colleague and I employed quantitative trait locus mapping with molecular markers. Results indicated that most of the variation in plant and inflorescence morphology between maize and teosinte can be explained by five restricted regions of the genome. In this paper, characterization of three of these regions …