Always consider proper soybean product selection, seedling population, row spacing, and fungicide application strategies to help reduce stress and help optimize soybean yield potential. Space beans about 4-6 inches away from one another with 24 inches between rows. Soybean Seed Rate Calculator (Fill in numbers in blue boxes) Seed: Seeding rate: Planting: Acres in field Desired stand, thousands of plants per acre Seed drop rate per foot of row Pounds of seed in a unit, if sold by weight Row spacing in inches Inches between seeds Figure 3 displays the early season (several weeks after plant emergence) plant population (y-axis) resulting from planting rates (x-axis) averaged across the soybean … Plants per acre by row spacing and within row plant density. At a given plant population, as row spacing decreases the plant spacing within the row increases and results in a more equidistant plant spacing. The increasing width of planters — many are now 60 feet wide — means that splitting rows with additional units makes planters very … In harvests from 2006 to 2008, Zhou et al., point out that row spacing of soybean ≤ 0.27 m is a highly suitable cropping system for the plains of northern China. In all row widths, the planted population was 140,000 seeds per acre. Recent studies of planting date and row spacing have been limited in geographic scope, and few of these have included both factors together. For a square bed, the distance between rows (Y) is equivalent to the spacing between plants planted within rows (X). In general, narrow rows decrease the time to canopy closure, which can help leaves intercept more light throughout the season. Spacing. Avoid soybeans planting in fields where common bean, sunflowers are grown in the previous season. Monsanto Technology Development. The old method was to use a “Hula-Hoop” but not many people find it “attractive” today to drive around with a “Hula-Hoop” in their truck when they can easily use a meter stick or a measuring tape. Three planting densities were applied (70, 90 and 110 seeds per 1 m2) with two row spacing (16 and 32 cm), in 4 replications. Table 1. Soybean management practices in farming are the decisions a producer must make in order to raise a soybean crop.The type of tillage, plant population, row spacing, and planting date are four major management decisions that soybean farmers must consider.How individual producers choose to handle each management application depends on their own farming circumstances. Plant population depends on seedbed conditions and planter settings. Every one of the pods that the soybean plant produces (up to 5 on average) will generally be between one and four inches in length. However, as row width isnarrowed (20-inch and below), establishing thestand to within +/- ½ plant per foot becomes moreimportant. Other agronomic practices were in alignment with local standards. In all row widths, the planted population was 140,000 seeds per acre. Some farmers use 20cm by 20xm; this is quite too close. and 30-in. Dr. Mark Licht is an assistant professor and extension cropping systems specialist with Iowa State University Extension and Outreach. Canopy closure is needed by the start of pod set (R3) for maximum pod formation and seed filling2. Two Nebraska On-Farm Research data-intensive management studies in 2018 showed no statistical yield difference in see… indicated that the spacing of 0.40 m between rows of plants can be used to ob-tain high yields. Combining winter wheat row spacing of 14 cm with soybean row spacing of 18 cm and soybean row spacing of 27 cm is a highly suitable planting system for the plains of Northern China. spacing between plants The resistance of pathogen to many fungicides; Management. It is quite obvious that we may develop new seeding rate recommendations in the future. Between 1 June and 10 September 2012 approximately 16 inches of irrigation were applied to all plots at a rate of one inch/acre on weekly intervals. In addition, Roundup PowerMAX® (28 fl oz/acre) and Warrant® Herbicide (2 pints/acre) were applied on 2 July 2012. Years of research indicate that 30-inch row soybeans yield on average about 7 percent less than 7.5- or 15-inch row soy-beans (Hanna et al., 2007; Oplinger and Philbrook, 1992). However, different planting patterns (plant spacing, row spacing and row ratios) directly affect intercropping system yields (Echarte et al., 2011). Soybean farmers need to be flexible enough to embrace new technologies and methods. Plant density and its non-uniformity drive the competition among plants as well as with weeds. To obtain a valid estimate of the number of plants per foot of row, make at least 10 random counts throughout the field. Plant spacing in the field is very important and plays a significant role in determining plant growth and development. Updated views on corn and soybean planting recommendations, Plant population considerations for corn following corn, Soybean planting date can have a significant impact on yield. If not, you will see a yield loss from reduced seeding rates. Average yield loss of a Genuity® Roundup Ready 2 Yield® soybean with relative maturity (RM) of 2.4 planted in three row spacing configurations compared to drilled (7.5-inch) single row for trial conducted in 2012. Obviously, both factors can be adjusted to provide optimal plant spacing and typically plant population increases as row spacing decreases. Soybean plant population in plants per foot of row for different row spacing's. Sources: 1Pedersen, P. 2008. In their study, the average plant spacing across all treatments was 8.2 inches, with standard deviation of uniformity at 4.7 for the ‘uniform,’ but 9.0 in non-uniform plots. Interaction of plant population, row spacing and variety selection on soybean yield. A Genuity® Roundup Ready 2 Yield® soybean product with relative maturity (RM) of 2.4 was planted on 7 May 2012 in 7.5-inch (drilled), 15- and- 30-inch row, and 30-inch twin row systems. The paper presents the effect of planting density and row spacing on the growth, development and yield of soybean, cv. ABSTRACT Soybean (Glicine max [L.] Merr.) apart with 4, 8, 16 or 24 plants per foot of row. The study’s average early season (2 to 4 weeks after planting) established soybean stand was 130,500 plants/acre with the planting rate of 150,000 pls/acre and 163,800 plants/acre with 200,000 pls/acre. For stands less than 50,000 plants per acre, plant a similar maturity into the existing stand; don’t tear out or kill an existing stand as early planted soybeans have a higher yield potential. The first unifoliate leaf appeared at 6 DAP and first trifoliate leaf appeared at 12 - 13 DAP. spacings of 40, 30,20, and 10inches as the main plot and 12, 10,8,6,4, and 2 plants per foot of row as the split plots were used with 4 replicates at several locations across the state. Twin row planting has been shown to have several potential benefits including maximizing light interception and allowing for greater plant root growth and development, which increases water and nutrient uptake. (Note: All of the seeding rate work was conducted in either 15- or 7.5-inch row width.) Row spacing determines the degree of plant to plant competition. Plant spacing should be thought of as existing in two directions: 1) within row spacing and 2) between row spacing. The risks associated with reduced plant populations is that pods form closer to the ground increasing harvest losses and the plant must maintain a high growth rate and leaf area throughout the season to remain competitive with higher populations. Nevertheless, most producers have resisted lowering their planting rates accordingly. Figure 2. Generally, May, June, and July temperatures were 9, 11, and 7 degrees, respectively, higher than 2011. The soybean crop has great economical importance in Brazil and in the world. Agronomic studies over the past 20 years have often shown that the chance of getting yield increases as plant population moves above 100,000 plants per acre is small. Testing was done to demonstrate the impact of different row spacing configurations on soybean yield potential under various growing conditions, such as the unusual drought and heat stress conditions of 2012. In crop seasons from2006 to 2008, Zhou et al. Soybean seeding rates of 90,000 to 120,000 seeds/acre resulted in the highest profitability. 1 Due to the ongoing goal of increasing yield potential for an ever-growing population, research continues to compare the … http://extension.agron.iastate.edu (10/18/12). soybean by 29.4 % compared to sole cropping of the component crops, while at Ibi, intercrop yields of pearl millet and soybean were respectively reduced by 35.9 % and 30.0 % compared to their sole yields. I am recommending farmers to try to see if they can manage a lower seeding rate (Table 4). Along with the yellowing and premature dropping of older leaves, insufficient nitrogen will also produce shorter internodal spacing on many plant types. 3. Soybean row spacing. Soybean plantings after June 20 in central/western NY and after June 10 in NNY can be risky, even with Group 0 varieties, especially if the remaining part of the growing season is cool or if frost occurs before October 1. Soybean [Glycine max (L.) Merrill] is a primary Illinois field crop, and maximizing returns through use of efficient soybean planting practices is important to producers. The trial consisted of 16 plots (four row widths, one soybean product, four replications), which were conventionally tilled on 2 April 2012. It is usually expressed in terms of plants per acre or plants per linear foot of row. These values equate to 10 and 6 bu/acre yield reductions for the 30- inch and both the 15-inch and the 30-inch rows, respectively. 2Elmore, R.W. An optimal plant population for soybean production is one that maximizes both yield and profitability. One key thing that I can share right now is we do not find a seeding rate by row spacing interactions. For example, soybean yield at both the Kemling and Stumpf farms (both in Perkins County) did not respond to changes in plant populations. Harvest populations were estimated by counting the number of plants in three- ... year study suggests that there is no significant effect on yields between the 7.5-inch row-spacing treatment and the 15-inch row-spacing treatment. Learning how much space needs to be between each plant results in healthier plants and a better yield. Seeding rate and number of viable plants are influenced by many factors. Weather conditions during the 2012 growing season were considered to be abnormal for the area with low rainfall and unusual high temperatures (Figure 1). There were days in late June and early July 2012 that daytime temperature was at or above 100° F; 26 June temperature recorded 111° F. In 2011, only two days in late July when daytime high temperatures were 100° F, while 16 days of temperature at or above 100° F was recorded in 2012. On average, the 7.5-inch drilled soybeans had a 20 -35 per cent increase in yield over the 15, 30, 36-inch and the twin row configurations. Air moves better around plants in wider rows, so soybeans in wide rows may be less susceptible to damage by white mold. soybean rows, at different planting dates and seeding rates, over six sites in Illinois. However, there are cases where 100,000 plants per acre is not enough. 5. Summary Soybean row spacing preferences vary greatly across the Midwestern U.S. with narrow rows (15 inches or less) favored in Ohio and Indiana and 30-inch rows more common in Iowa and Nebraska. One den of groundhogs can consume a tenth to a quarter of an acre of soybeans. Plant density (emergence) decreased at wider row spacing, but was not affected by N rate, regardless of row spacing (which means there was no interaction between these factors). In 2017 and 2018, eight soybean seeding rates (starting at 80,000 and increasing by 20,000 live seeds per acre increments) and row spacing (12 and 24 inch) were evaluated in 15 eastern North Dakota environments to quantify established plant densities, seed yield, and plant loss occurring during the season. The standard spacing for soybean is 50cm by 50cm. If you plan on using a rectangular bed layout rather than a traditional row layout, use the upper end of each between the plant spacing for your chosen vegetable. Figure 3. Average yield from 15-inch and twin rows were similar. Determination of the plant population is essential after damage by hail, diseases, or herbicides. Dry autumn conditions and severe lodging occurred at St. Paul. Seed yields tended to be higher at the narrow spacing between rows. Soybean plant population recommendations forIndiana are shown in Table 1 (columns 3 and 4) forvarious row widths. 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