Not exact matches
Soybean yields across much of the Corn Belt have been exceptionally high in recent years, leading to the question of whether soybean yields are increasing relative to corn
Soybean yields across much of the Corn Belt have been exceptionally high in recent years, leading to the question of whether
soybean yields are increasing relative to corn
soybean yields are
increasing relative to corn
yields.
That's in contrast to the impact of a gene on chromosome 20 that
increased protein concentration but also significantly decreased
yields in
soybean varieties.
Yearly testing at the Southeast Research Center near Beresford, South Dakota, has not yet identified any nematicide seed treatments that have
increased soybean yields, according to Byamukama.
A new study, however, shows it's possible to
increase the number of
soybean root nodules — and the bacteria that live there — to
increase crop
yields.
«Fixing
soybean's need for nitrogen: Spraying beneficial bacteria
increases yield, sustainability.»
The researchers predict that crop
yields for wheat,
soybean, and sorghum should
increase even more if mitigation measures are put in place.
Studies from Iowa State University and the University of Missouri [PDF] found that so - called preventive use of fungicides
increased soybean yields by as much as 20 percent.
«Look back at US
soybeans shows genetic improvement behind
increased yields.»
In a new study that traces the genetic changes in varieties over the last 80 years of
soybean breeding, researchers concluded that
increases in
yield gains and an
increased rate of gains over the years are largely due to the continual release of greater -
yielding cultivars by breeders.
Average
yields of grain corn and
soybeans were highly correlated (R2 = 0.86 and 0.74, respectively) with average available crop heat units (CHU), with
yields increasing by about 0.006 t ha - 1 CHU - 1 for corn and 0.0013 t ha - 1 CHU - 1 forsoybeans.
Springtime cold air outbreaks (at least two consecutive days during which the daily average surface air temperature is below 95 % of the simulated average wintertime surface air temperature) are projected to continue to occur throughout this century.19 As a result,
increased productivity of some crops due to higher temperatures, longer growing seasons, and elevated CO2 concentrations could be offset by
increased freeze damage.20 Heat waves during pollination of field crops such as corn and
soybean also reduce
yields (Figure 18.3).4 Wetter springs may reduce crop
yields and profits, 21 especially if growers are forced to switch to late - planted, shorter - season varieties.
For corn, small long - term average temperature
increases will shorten the duration of reproductive development, leading to
yield declines, 4 even when offset by carbon dioxide (CO2) stimulation.5, 6 For
soybeans,
yields have a two in three chance of
increasing early in this century due to CO2 fertilization, but these
increases are projected to be offset later in the century by higher temperature stress7 (see Figure 18.2 for projections of
increases in the frost - free season length and the number of summer days with temperatures over 95 °F).
World
soybean production has more than doubled in the past 20 years, and while some of this
increased demand has been met by improvements in
yield, much of it has come from expanding
soybean cultivation into new areas — such as tropical forests in the Amazon region.
«The above findings reveal that
soybean yields will
increase in the future in response to benefits provided by rising atmospheric CO2.
Elevated CO2
increases nitrogen fixation at the reproductive phase contributing to various
yield responses of
soybean cultivars.
It predicts
increases of 30 to 60 percent in the
yields of
soybeans, cotton, wheat and other crops — enough to provide food and clothing for earth's expanding human population.
The slope of regression (ry) indicates a roughly 17 % relative decrease in both corn and
soybean yield for each degree
increase in growing season temperature.
One beneficial impact of climate change is likely to be the projected
increase in
soybean yields in the south of South America.
Chapter 9 Data: Feeding Eight Billion People Well (XLS PDF Highlights) Undernourishment in the World and in Selected Groups and Regions, 2009 Undernourishment in the World, 1969 - 2009 World Grain Production and Consumption, 1960 - 2009 World Average Grain
Yields, 1950 - 2009 World Grain
Yields, Annual Percent
Increase by Decade, 1950 - 2009 Milk Production in India and the United States, 1961 - 2007 World Animal Protein Production, 1961 - 2007 World
Soybean Production, 1964 - 2009 World Fertilizer Consumption, 1950 - 2008 Top of Page
It predicts
increases of 30 to 60 percent in the
yields of
soybeans, cotton, wheat and other crops — ignoring projections to the contrary from plant and agricultural scientists