{"id":210,"date":"2014-07-10T22:25:38","date_gmt":"2014-07-11T02:25:38","guid":{"rendered":"http:\/\/site.extension.uga.edu\/brooksag\/?p=210"},"modified":"2015-08-03T16:06:40","modified_gmt":"2015-08-03T20:06:40","slug":"ultra-late-soybean-production","status":"publish","type":"post","link":"https:\/\/site.extension.uga.edu\/brooksag\/2014\/07\/ultra-late-soybean-production\/","title":{"rendered":"Ultra-Late Soybean Production"},"content":{"rendered":"

\"doublecrop3\"<\/a><\/p>\n

In the last several years, many growers have experienced great success planting soybeans behind corn silage or traditional corn harvested early. \u00a0This double crop production system with soybeans has proved to be advantageous in the control of weeds and economically beneficial. \u00a0The price of soybeans has provided an economic incentive to add an additional crop within one growing season. \u00a0Also, weeds that would be growing,\u00a0in fallow ground behind corn, are better controlled in an ultra-late soybean planting. \u00a0Double cropping can assist with weed control by preventing germinating weeds and seed production. \u00a0Otherwise, these weeds are only controlled by the first seasonal frost, in our area this is generally around mid November. \u00a0The added bonus of additional weed control is especially important with glyphosate resistant Palmer amaranth. \u00a0However, this late season soybean production system is more risky than traditional soybean plantings and requires timely management of pesticide applications and irrigation. Ultra -late soybean yields can be significantly impacted by management practices.<\/p>\n

There are several factors that may affect the success or failure of ultra-late soybean production. \u00a0University of Georgia crop specialist have provided recommendations for growers interested in this production system. \u00a0The following is a list of points to consider that may have dramatic impact on yield and profitability.<\/p>\n

1. \u00a0Planting date – Every effort should be made to plant as early as possible. \u00a0Past research has indicated that a 0.75 bu\/day loss in yield occurs when soybeans are planted after the middle of June through the end of July. \u00a0This yield decrease is even more dramatic as planting continues into August. \u00a0However, UGA does not have a recommended cut-off date for planting soybeans but consider that the earlier planted the more time for yield potential. \u00a0UGA crop specialist indicate that planting date is the most significant factor in late soybean production. \u00a0Of course, each year is different due to fall weather and makes the latest planting date more variable.<\/p>\n

2. \u00a0Irrigation capabilities – Irrigation water will be necessary to support the amount of vegetative growth that is important with late season soybean production. \u00a0Irrigation will assist in eliminating stress, support growth, possibly help increase the height of the soybean crop, and potentially help increase the height of pods produced on bottom of plant. \u00a0In this production system, sometimes the pods located on the lower nodes may be too low to be harvested. \u00a0Also, irrigation plays an important role in acceptable germination. \u00a0Growers may also have access to a soybean seed supply that has been kept in cold storage to possibly aid with germination. If irrigation capabilities are available, watering before planting can provide better soil to seed contact.<\/p>\n

3. \u00a0Planting capabilities – Narrow rows and high seeding rates are beneficial in this production system. \u00a0Seeding rates to consider should include at least 175,000 seed\/A, but even higher rates may prove to be better. \u00a0The higher seeding rate is used to increase overall plant population. \u00a0The potential for positive yield impact and increased crop height goes up with each additional stalk present. \u00a0Planting soybeans in narrow rows, allows the plants to compete with each other and ultimately grow taller. \u00a0We can also decrease the time required for canopy closure, with narrow rows and higher plant populations, which aids in weed control. \u00a0Also, planting with a no-till drill may have a positive impact due to; same day planting as harvest, cooler soil temperatures with corn stubble (soybean emergence can decrease with high soil temperatures), and possible improved harvest.<\/p>\n

4. \u00a0Soybean Variety\/Maturity Group (MG) \u00a0– When planting this late, with a limited time for vegetative growth, important variety characteristics to consider are early season vigor and large plant stature. \u00a0Maturity group selection may not be the most important factor in variety selection in this late planting system. \u00a0During “traditional” planting windows maturity group plays a critical role in soybean growth and development. \u00a0However, the varieties planted in Georgia (MG V – MG VII) will begin flowering about the same time (within a day or two) when planted in late July or early August.<\/p>\n

5. \u00a0Fertility – Additional Nitrogen applied prior to or close to planting potentially increases early season growth rate. \u00a0With late planted soybeans, the limited growth period decreases the plant’s ability to produce enough nitrogen to experience maximum growth rate. \u00a0Research conducted in 2013 revealed that 30 units\/acre of additional nitrogen can increase plant height and soybean yield.<\/p>\n

6. \u00a0Soybean prices – Careful consideration should be given to the economic risk of this system. \u00a0Yields can vary greatly and are compressed with the late planting system. \u00a0So, economic profitability of this system is determined by price the crop can be sold.<\/p>\n

 <\/p>\n","protected":false},"excerpt":{"rendered":"

In the last several years, many growers have experienced great success planting soybeans behind corn silage or traditional corn harvested early. \u00a0This double crop production system with soybeans has proved to be advantageous in the control of weeds and economically beneficial. \u00a0The price of soybeans has provided an economic incentive to add an additional crop […]<\/p>\n","protected":false},"author":40,"featured_media":0,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[7],"tags":[],"class_list":["post-210","post","type-post","status-publish","format-standard","hentry","category-soybeans"],"_links":{"self":[{"href":"https:\/\/site.extension.uga.edu\/brooksag\/wp-json\/wp\/v2\/posts\/210","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/site.extension.uga.edu\/brooksag\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/site.extension.uga.edu\/brooksag\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/site.extension.uga.edu\/brooksag\/wp-json\/wp\/v2\/users\/40"}],"replies":[{"embeddable":true,"href":"https:\/\/site.extension.uga.edu\/brooksag\/wp-json\/wp\/v2\/comments?post=210"}],"version-history":[{"count":24,"href":"https:\/\/site.extension.uga.edu\/brooksag\/wp-json\/wp\/v2\/posts\/210\/revisions"}],"predecessor-version":[{"id":237,"href":"https:\/\/site.extension.uga.edu\/brooksag\/wp-json\/wp\/v2\/posts\/210\/revisions\/237"}],"wp:attachment":[{"href":"https:\/\/site.extension.uga.edu\/brooksag\/wp-json\/wp\/v2\/media?parent=210"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/site.extension.uga.edu\/brooksag\/wp-json\/wp\/v2\/categories?post=210"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/site.extension.uga.edu\/brooksag\/wp-json\/wp\/v2\/tags?post=210"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}