Showing results for: corn yield Articles
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Evaluation of the impacts of climate variability on rainfed maize production over the Wami-Ruvu basin of Tanzania
In this study, the impact of inter-seasonal climate variability on rainfed maize (Zea mays) production over the Wami-Ruvu basin of Tanzania is evaluated. Daily high-resolution climate simulations from the Coordinated Regional Climate Downscaling Experiment_Regional Climate Models (CORDEX_RCMs) are used to drive the Decision Support System for Agro-technological Transfer (DSSAT) to simulate ...
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Contribution of planting date trends to increased maize yields in the central united states
Early planting of maize (Zea mays L.) allows for longer-season hybrids to be used in cool temperate regions. Given that a multidecadal trend toward earlier planting has been occurring across the Corn Belt, it was hypothesized that this shift has supported a portion of recent yield increases. The objectives were to quantify relationships among state level monthly climate variables, maize yields, ...
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Climate change impacts on regional maize yields and possible adaptation measures in Argentina
In this work, the impact of future climate (2081-2090) on regional maize yields was assessed through a crop simulation model. The climatic inputs correspond to the regional model MM5/CIMA, considering grids of 50 km * 50 km. Crop model runs were done under typical crop management conditions with and without considering the fertilisation effect of CO2. Without CO2 effects, the impact of future ...
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Model-based approach to quantify production potentials of summer maize and spring maize in the north China plain
The North China Plain (NCP) belongs to the major maize (Zea mays L.) growing areas in China. Maize yields have increased steadily since the 1980s, but in recent years average yields have stabilized around 5000 kg ha–1. The objective of this study was to quantify the production potential of summer and spring maize in the NCP. For this purpose the CERES-Maize model was calibrated and validated. The ...
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Evaluation of climate change impacts and adaptation strategies for maize cultivation in the Himalayan foothills of India
This study evaluates the impacts of climate change on rainfed maize (Zea mays) yield and evaluates different agro-adaptation measures to counteract its negative impacts at Sikkim, a Himalayan state of India. Future climate scenarios for the 10 years centered on 2025, 2055 and 2085 were obtained by downscaling the outputs of the HadCM3 General Circulation Model (GCM) under for A2 and B2 ...
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Copper distribution in chemical soil fractions and relationships with maize crop yield
Abstract Agricultural practices can lead to copper accumulation in soils and at high concentration it can become toxic for plants. One common toxic effect of copper on plants is a decrease of crop yield. Here, we studied 1) the crop yield of maize grown on plots of a soil intentionally enriched with copper sulphate and 2) the possible relationship between the copper concentration in chemical soil ...
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Organic and mineral input management to enhance crop productivity in Central Kenya
Organic resources (ORs) are important nutrient inputs in tropical agriculture. Combined with mineral fertilizers, they form the backbone of integrated soil fertility management. This study was conducted to determine the medium- to long-term influence of OR quality and quantity on maize productivity and to evaluate the occurrence of additive benefits in terms of extra grain yield produced by the ...
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Do mixed-species legume fallows provide long-term maize yield benefit compared with monoculture legume fallows?
The deliberate planting of fast-growing N2–fixing legume monoculture species in rotation with cereal crops can be an important source of N for soil fertility replenishment. We hypothesized that mixed-species fallows have a higher potential of giving long-term residual benefits in terms of biomass, nutrients, and quality of residuals leading to long-term nutrient supply to postfallow maize (Zea ...
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Fecal sludge-derived pellet fertilizer in maize cultivation
Fecal sludge (FS) contains significant amounts of plant nutrients and organic matter although it also contains pathogens. Therefore, FS can be used as fertilizer after proper sanitization. This study was designed to test dried fecal sludge (DFS)-based pellet fertilizers on maize cultivation. The DFS fertilizers were produced by composting, co-composting with sawdust, or irradiated by ...
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Long-term fertilizer experiment network in China: Crop yields and soil nutrient trends
Results are summarized for the first 15 yr of an eight-site, long-term experimental network in China designed to assess the sustainability of cropping systems in environments representing 70% of Chinese cropland. Systems were wheat–maize double cropping (two crops per year) at four sites, wheat–rice double cropping, rice-based triple cropping, and wheat or maize single cropping. Without ...
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Appropriate integrated nutrient management and field water harvesting options for maize production mitigating drought in the semi-arid southern rangelands of eastern Kenya
The southern rangelands of Kenya are prone to frequent droughts leading to serious food shortages. The effect of the farmer practice (flat seedbed), tied-ridging and contour furrows water harvesting techniques and five integrated nutrient management practices on the performance of rain-fed maize was studied at the southern rangelands of Kenya (Kibwezi) during the 2006 short rainy season. Both ...
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Evaluation of NASA satellite- and model-derived weather data for simulation of maize yield potential in China
Use of crop models is frequently constrained by lack of the required weather data. This paper evaluates satellite-based solar radiation and model-derived air temperature (maximum temperature, Tmax; minimum temperature, Tmin) from NASA and their utility for simulating maize (Zea mays L.) yield potential at 39 locations in China's major maize-producing regions. The reference data in this evaluation ...
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Effect of biochar on maize yield and yield components in rainfed conditions
Int. J. Agron. Agri. Res. 12(3), 46-51, March 2018. To investigate the maize yield and nutrient concentration in its leaves as affected by biochar from different organic materials (wheat straw and sugarcane bagasse), a field experiment was conducted on maize crop during 2013 at koont research farm chakwal. The treatments were control, wheat straw biochar at 5t ha-1, and 10t ha-1, sugarcane ...
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Classifying maize inbred lines into heterotic groups using a factorial mating design
A novel method of using a heterotic group's specific and general combining ability (HSGCA) to assign maize (Zea mays L.) inbred lines into heterotic groups has been proposed recently. The objectives of this study were to (i) assign maize inbred lines to known heterotic groups using this method and (ii) compare efficiency of this method to traditional and molecular methods relative to the ...
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Physiological interaction of soil moisture deficit and plant population on yield and yield components relationships of maize ( Zea mays L.)
Maize ( Zea mays L.) crops were grown at Coimbatore in the years 2009 and 2010 during the kharif season. The treatments imposed were three soil moisture levels: 100% irrigation water supply (0.8 IW/CPE ratio), 75% irrigation water supply (0.6 IW/CPE ratio) and 50% irrigation water supply (0.4 IW/CPE ratio). The plant density treatments adopted were normal spacing (60 × 20 cm), narrow ...
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Can changes in canopy and/or root system architecture explain historical maize yield trends in the U.S. corn belt?
Continuous increase in the yield of maize (Zea mays L.) in the U.S. Corn Belt has involved an interaction with plant density. A number of contributing traits and mechanisms have been suggested. In this study we used a modeling approach to examine whether changes in canopy and/or root system architecture might explain the observed trends. A maize crop model was generalized so that changes in ...
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Vegetative phase change characteristics and resistance to common rust of corn cultivars developed in different eras
Since 1930, maize (Zea mays L.) yields in the United States have increased more than fourfold. Previous studies examining maize cultivars grown during that period have documented changes in yield, leaf angle, tassel size, drought tolerance, and insect resistance, but none have examined changes in vegetative phase change or resistance to common rust (Puccinia sorghi Schwein.). Vegetative phase ...
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Robust method for estimating grain yield in western Kenya during the growing seasons
Uncertainties caused by climate change and population explosion require suitable methods for estimating grain yield during the growing seasons. This paper evaluates the applicability of the AquaCrop model in the region of western Kenya. The objectives of the study were to: simulate the long-term maize crop yields for the region using AquaCrop model for variable climate scenarios, and estimate ...
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Efficiency of maize irrigation scheduling in climate variability and extreme weather events in eastern Croatia
This study was conducted (2010–2012) to analyse the efficiency of irrigation scheduling in maize production based on soil moisture measurements (Watermark soil moisture sensors) in years with extreme weather events at the research site of the Agricultural Institute in Osijek, eastern Croatia. Three irrigation treatments and four maize hybrids were studied. In the extremely rainy 2010, the ...
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Breeding maize for a bioeconomy: a literature survey examining harvest index and stover yield and their relationship to grain yield
The use of maize (Zea mays L.) stover as a feedstock for cellulosic biofuels production will create demand for maize hybrids with greater stover yield. It is expected that grain yield will remain the most critical trait and continue to drive hybrid sales, requiring that any increases in stover yield be made without sacrificing grain yield potential. The objective of this review was to determine ...
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