corn production Articles
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Evaluation of in-season Nitrogen management strategies for corn production
Nitrogen is an important and costly input for corn (Zea mays L.) production. With rising prices and environmental concerns, producers are looking for ways to better manage N fertilization. A project designed to evaluate in-season N management strategies for adjusting N rate was conducted in 30 Iowa cornfields from 2004 to 2006. Nitrogen rates applied preplant or early sidedress (PRE-N) and corn ...
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Planting date and cultivar effects on grain yield in dryland corn production
Corn (Zea mays L.) production is gradually spreading into the Sudan savanna zone of West Africa where production is limited by erratic and inadequate rainfall. To increase corn production, production practices should be properly designed to minimize the effects of low precipitation and high temperatures that characterize the zone. A study, to determine the performance of late (120 d), early (90 ...
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Hairy Vetch management for no-till organic corn production
Rolling-crimping to control hairy vetch (Vicia villosa Roth) may make organic no-till corn (Zea mays L.) possible. This study investigated how rolling-crimping date and growth stage of the cover crop affected hairy vetch control and if a rolled-crimped hairy vetch cover crop could supply weed control for no-till corn. Hairy vetch was planted in late August and was rolled and crimped and planted ...
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Corn morphology, mass, and grain yield as affected by early-season red: far-red light environments
The spatial arrangement among plants affects both vegetative and reproductive meristem development. More axillary meristems develop at lower plant densities, which are associated with relatively high red:far-red light ratios (R:FRs; 645:735 nm). However, little is known about the effect of R:FR on corn (Zea mays L.) productivity. We conducted field research to determine the effect of early-season ...
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Corn Production in the Bowen Food Basin - Case Study
In Bowen, Queensland, in 2010, Hibrix was compared with a high NPK mineral fertiliser program for the production of maize cv. Hycorn 675IT on an alluvial sandy loam soil irrigated via sub-surface drip tape. At commercial harvest, cobs from 20 randomly selected plants per plot from were harvested, weighed and the length, girth at the cob base and length of tip not filled with kernels was measured. ...
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Assessing the relationship between alternative production practices and energy and other input use in US agriculture
An important issue with regard to the overall effectiveness of conservation tillage practices in reducing the impact of agricultural production on the environment concerns what happens to energy, pesticide and fertiliser use as these practices are more extensively adopted. To gain some insight into this, the conservation tillage adoption decision is modelled. Starting with the assumption that the ...
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No-till corn after Bromegrass: Effect on soil carbon and soil aggregates
Grasslands in the Conservation Reserve Program (CRP) in the USA may be converted to grain crops for bioenergy. The effect of no-till conversion of a smooth bromegrass (Bromus inermis Leyss) grassland to no-till corn (Zea mays L.) production on soil organic carbon (SOC) in the western Corn Belt was monitored for over 6 yr. A different 13C/12C isotope signature is imparted to SOC by C4 plants ...
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The StarLink controversy: the competing frames of risk disputes
The controversy over the containment of StarLink corn, a genetically modified product, is in many ways similar to risk disputes that have surrounded new technologies in the past. More than technical debates about the extent of risk, they are shaped by conflicting socio-political perspectives about the nature of risks, the ability of regulators to predict and control the effects of new ...
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Profitability maps as an input for site-specific management decision making
For over a decade, farmers have been collecting site-specific yield data. Many have formed doubts about this investment because of their inability to directly apply this information as feedback for improving management. The objective of this case-study analysis was to investigate how site-specific decisions can be improved by transforming a long-term multiple-crop yield-map dataset into profit ...
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Linking Wisconsin dairy and grain farms via manure transfer for corn production
One relatively under-used manure management strategy employed by dairy farmers is to transport and apply manure onto the fields of nearby grain farmers. While this system offers advantages to both parties, little of the existing research on manure management has been conducted on grain farms. As part of an effort to link grain and livestock farms in southern Wisconsin, 20 on-farm trials were ...
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Corn Irrigation System
From Seed to Harvest: The Role of Corn Irrigation System Today we’re going to dive deep into the world of agriculture, focusing specifically on corn irrigation system. From the moment a corn seed is planted to the time it’s ready for harvest, irrigation plays a vital role. This process ensures that the crops get the right amount of water at the right time, which can significantly ...
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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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Grain sorghum and corn comparisons: yield, economic, and environmental responses
Grain sorghum [Sorghum bicolor (L.) Moench] is often grown where water stress is expected. But, improved drought tolerance in corn (Zea mays L.) hybrids has resulted in increased dryland corn production in preference to grain sorghum. However, grain sorghum may still have a yield advantage over corn in drought prone environments. This study was conducted to determine if grain sorghum has either a ...
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Nitrogen recommendations for corn: An on-the-go sensor compared with current recommendation methods
Precision agriculture technologies provide the capability to spatially vary N fertilizer applied to corn (Zea mays L.), potentially improving N use efficiency. The focus of this study was to evaluate the potential of improving N recommendations based on crop canopy reflectance. Corn was grown at four field sites in each of 2 yr in Centre County, Pennsylvania. Preplant treatments included: zero ...
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Integrating winter annual forages into a no-till corn silage system
The benefits of cover crops within crop rotations are well documented, but information is limited on using cover crops for forage within midwestern United States cropping systems, especially under no-tillage management. Our objective was to evaluate plant, animal, and soil responses when integrating winter cover crop forages into no-till corn (Zea mays L.) silage production. Three cover crop ...
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Economic performance of alternative tillage systems in the northern corn belt
While no-till (NT) cropping systems can provide conservation benefits in the northern Corn Belt, adoption has been low due to concerns about potential yield reductions and economic risk. Strip-tillage (ST) systems have been proposed as an alternative that may provide many of the conservation benefits of NT while maintaining productivity and economic returns. The objectives of this study were to ...
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Sensitivity of chlorophyll meters for diagnosing nitrogen deficiencies of corn in production agriculture
Chlorophyll meters have been widely used to diagnose N deficiencies in research trials and to help refine N fertilizer recommendations in production agriculture. The diagnoses are based on the assumption that chlorophyll meters can detect a wide range of N deficiencies under field conditions according to relationships between chlorophyll meter readings (CMRs) and yield responses to N ...
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High-Yielding corn response to applied Phosphorus, Potassium, and Sulfur in Nebraska
Nutrient management recommendations may change as yield levels and efficiency of crop production increase. Recommendations for P, K, and S were evaluated using results from 34 irrigated corn (Zea mays L.) trials conducted in diverse situations across Nebraska. The mean yield was 14.7 Mg ha–1 with adequate fertilizer applied. The median harvest index values were 0.52, 0.89, 0.15, and 0.56 for ...
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The Crunch Factor – Corn Chip Edition
Friday, January 29 was National Corn Chip Day. To celebrate, we took a closer look at this wonder of the snack world and are sharing the important role that moisture plays in the production of corn chips and snack foods in general. To get the scoop on corn chips, we spoke to Randy Rupprecht, QA Manager, and Mike Klein, Processing Manager, of Axium Foods. Every snack food has its own set of ...
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Say it ain’t so, Joe!
As the 2013 corn crop was being planted, futures prices were above $6.00 a bushel with an occasional bump above $7.00. Traders were concerned that the planting problems farmers were experiencing would result in reduced production. By the end of July, with fewer concerns about the size of the corn crop, the priced dropped below $5.00. Since then the price has trended downward so that as this ...
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