soybean field Articles
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Diversity of arbuscular mycorrhizal fungal species in soils of cultivated soybean fields
Mycorrhizae are presumably important contributors to plant growth in most ecosystems. Our objective in this study was to evaluate the population diversity of arbuscular mycorrhizal (AM) fungi in Clarion (well drained) and Webster (poorly drained) soils of four Iowa soybean [Glycine max (L.) Merr.] fields. These soils normally occur together on the landscape, with Clarion in the upland and Webster ...
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Soybean aphid population dynamics, soybean yield loss, and development of stage-specific economic injury levels
Stage-specific economic injury levels (EILs) form the basis of integrated pest management for soybean aphid (Aphis glycines Matsumura) in soybean [Glycine max (L.) Merr.]. Experimental objectives were to develop a procedure for calculating EILs of the soybean aphid specific to the R2 (full bloom), R4 (full pod), and R5 (beginning seed) soybean development stages using the law of the diminishing ...
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Soybean aphid population dynamics, soybean yield loss, and development of stage-specific economic injury levels
Stage-specific economic injury levels (EILs) form the basis of integrated pest management for soybean aphid (Aphis glycines Matsumura) in soybean [Glycine max (L.) Merr.]. Experimental objectives were to develop a procedure for calculating EILs of the soybean aphid specific to the R2 (full bloom), R4 (full pod), and R5 (beginning seed) soybean development stages using the law of the diminishing ...
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Estimating the contribution of groundwater to rootzone soil moisture
In the Huaibei Plain basin, China, soybean is a main crop. During the soybean growth period, rainfall can vary largely and depth to watertable can also vary largely. The amount of water supplied to the soybean rootzone by groundwater affects soybean growth and yield. Accurate simulation of groundwater contributions to soybean rootzone soil moisture (groundwater contribution) can be important ...
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Probability of yield response to inoculants in fields with a history of soybean
Inoculants containing Bradyrhizobium japonicum are available for soybean [Glycine max (L.) Merr.] production but may not be necessary in fields where soybean previously has been produced. The objective of this study was to determine yield response and probability of an economic return from inoculants in fields with a recent history of soybean production. Fifty-one inoculant products were ...
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Six Late Harvest Tips: Don’t Leave yourself Out in the Cold
One of the big concerns this harvest has been the moisture and rain that delayed the planting of corn and soy. Now, as we get into colder and colder temperatures and the stretches of intense sunlight begin to dwindle, some farmers might wonder how they should change their approach to the season. I’m a research lead for The Climate Corporation at one of its research farms in South Dakota, ...
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Pod removal, shade, and defoliation effects on soybean yield, protein, and oil
Soybean [Glycine max (L.) Merr.] yield formation in field environments can be either source-limited or sink-limited, depending on the assimilatory capacity of the mother plant relative to the assimilate demands of the developing seeds. Our objective was to evaluate yield and seed quality relationships under source-limited and sink-limited conditions during the seed-filling period, as protein and ...
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Phytotoxic effects of Cu and Zn on soybeans grown in field-aged soils: their additive and interactive actions
Received for publication June 16, 2006. A field pot experiment was conducted to investigate the interactive phytotoxicity of soil Cu and Zn on soybean plants [Glycine max (L.) Merr.]. Two soils (Arkport sandy loam [coarse-loamy, mixed, active, mesic Lamellic Hapludalf] and Hudson silty clay loam [fine, illitic, mesic Glossaquic Hapludalf]) spiked with Cu, Zn, and combinations of both to reach the ...
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Soybean response to inoculation and nitrogen application following long-term grass pasture
Current demand for soybean grain [Glycine max (L.) Merrill] may lead to a conversion of pasture and Conservation Reserve Program fields into soybean or corn (Zea mays L.) production. Our objective was to determine the effect of soybean seed inoculation with Bradyrhizobium spp. and fertilizer N application rate on soybean productivity planted 1 and 2 yr after conversion to row crop production. ...
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USDA Eyes Bioengineered Food Standard - Case study
On May 4, 2018, the U.S. Department of Agriculture (USDA) Agricultural Marketing Service (AMS) proposed a rule to establish the first ever National Bioengineered Food Disclosure Standard (NBFDS) mandated by Congress in 2016. This column discusses the proposal, what it intends to achieve, and its implications. Background On July 29, 2016, Congress enacted legislation amending the Agricultural ...
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Reduced soil tilling helps both soils and yields
Agriculture degrades over 24 million acres of fertile soil every year, raising concerns about meeting the rising global demand for food. But a simple farming practice born from the 1930's Dust Bowl could provide a solution, according to new Stanford research. The study, published Dec. 6 in Environmental Research Letters, shows that Midwest farmers who reduced how much they overturned the soil -- ...
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Conservation: It’s the right thing to do
A fable of six blind men and an elephant originated centuries ago somewhere on the Indian continent. In it the blind men try to identify an elephant by touching only one part. According to the fable each man came to a different conclusion as to what the elephant was. The parable illustrates that though opinions may vary, there’s some truth to be found in all of them. That’s the way ...
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Industrial Production of Plant-based Milk Alternatives
More and more consumers are turning to plant-based milk alternatives instead of cow’s milk. As such, the market has seen constant development in recent years. In this interview, Andreas Metzenauer, Head of Beverages and Dairy at Flottweg, provides some interesting facts about how plant-based milk alternatives are produced and how industrial centrifuges are used for this. Everyone is ...
By Flottweg SE
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Ruminant Animal Feed Production Business Plan
In recent years, more and more farmers who feed cattle, cow, sheep and other animals choose to make their own animal feed by purchasing a small set of ruminant animal feed production plant. How much does it cost to set up an animal feed production plant? What’s the price of small feed processing unit? How to make the best ruminant animal feed production business plan? Hot Sale Equipment ...
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AquaCrop model simulation under different irrigation water and nitrogen strategies
On a global scale, irrigated agriculture consumes about 72% of available freshwater resources. Deficit irrigation can be applied in the field to save irrigation water and still lead to acceptable crop production. The AquaCrop model is a simulation model for management of irrigation and nitrogen fertilizer. This model is a new model that is accurate, robust and requires fewer data inputs ...
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Fate and effects of clothianidin in fields using conservation practices
Despite the extensive use of the neonicotinoid insecticide clothianidin, and its known toxicity to beneficial insects like pollinators, little attention has been given to its fate under agricultural field conditions. The present study investigated the fate and toxicity of clothianidin applied every other year as a corn seed‐coating at two different rates, i.e., 0.25 and 0.50 mg/seed, in an ...
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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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Bumper 2011 Grain Harvest Fails to Rebuild Global Stocks
The world’s farmers produced more grain in 2011 than ever before. Estimates from the U.S. Department of Agriculture show the global grain harvest coming in at 2,295 million tons, up 53 million tons from the previous record in 2009. Consumption grew by 90 million tons over the same period to 2,280 million tons. Yet with global grain production actually falling short of consumption in 7 ...
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Can genetic engineering help quench crops’ thirst?
Researchers around the world are exploring how GMO technology might boost food production under hot, dry conditions. Roger Deal is trying to figure out how plants remember drought. An assistant professor of biochemistry and genetics at Emory University, Deal says most plants have a kind of memory for stress. When experiencing water shortage, for example, plants close the holes in their leaves, ...
By Ensia
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