{"id":711,"date":"2018-06-20T09:01:14","date_gmt":"2018-06-20T13:01:14","guid":{"rendered":"http:\/\/site.extension.uga.edu\/plowpoints\/?p=711"},"modified":"2018-06-20T09:01:14","modified_gmt":"2018-06-20T13:01:14","slug":"late-planted-cotton-peanut-update-corn-update-late-planted-soybeans","status":"publish","type":"post","link":"https:\/\/site.extension.uga.edu\/plowpoints\/2018\/06\/late-planted-cotton-peanut-update-corn-update-late-planted-soybeans\/","title":{"rendered":"Late Planted Cotton &#8211; Peanut Update &#8211; Corn Update &#8211; Late Planted Soybeans"},"content":{"rendered":"<p><strong>Late Planted <u>COTTON <\/u>Tips from UGA Cotton Agronomists \u2013 Jared Whitaker &amp; Mark Freeman<\/strong><\/p>\n<p>Many of our cotton acres have been planted in the month of June. Although yields tend to decrease as we move past the 10<sup>th<\/sup> of June there is still potential for profitable yields.<\/p>\n<ul>\n<li>Consider <strong>increasing seeding rates<\/strong> \u2013 Shoot for a final plant stand of 2 plants\/foot<\/li>\n<li><strong>Decrease any stress<\/strong> \u2013 Irrigate to promote stand establishment, enhance fruit retention and eliminate stress during dry periods<\/li>\n<li><strong>PGR\u2019s<\/strong> \u2013 Mepiquat products should be applied to prevent excessive vegetative growth and decrease boll rot, and retain fruit on the lower position bolls which promotes crop earliness.<\/li>\n<li><strong>Varieties<\/strong> \u2013 Varieties should be chosen on overall yield potential NOT maturity characteristics. (Most available varieties only differ by a few days to a week.)<\/li>\n<li><strong>Fertility<\/strong> \u2013 Decrease N rates by 25%-30% to limit excessive vegetative growth. This should be done by taking some off pre-plant and sidedress. (Consider 20 lb N at plant and 55 lb N at sidedress. If you put out 30 at plant before rains in May and did not plant until June you will still have 10-20 lb N available so just do the N sidedress early.<\/li>\n<\/ul>\n<p><strong>Other things to keep in mind from specialists: Phillip Roberts, Wes Porter and Glen Harris<\/strong><\/p>\n<p><strong>Scout closely and use thresholds<\/strong><\/p>\n<ul>\n<li>Thrips are usually low on late planted cotton as long as plants are growing rapidly<\/li>\n<li>Aphids will infest younger cotton, stress could delay development<\/li>\n<li>Tarnished Plant Bug affects square retention use sweep nets and drop cloths to monitor. Shoot for 80% square retention.<\/li>\n<li>Corn Earworm watch for in mid-July, though the newer 3 Bt gene varieties are less susceptible no cotton is immune.<\/li>\n<li>Stink Bug infestations will be higher in late planted cotton. Scout and treat as needed, remember thresholds are lower during the 3<sup>rd<\/sup>-5<sup>th<\/sup> week of bloom.<\/li>\n<\/ul>\n<p><strong>Planter Settings<\/strong> \u2013 watch down pressure and soil contact when planting into less than ideal soils. Make sure the wheel is not pressing down to hard and making trenches or compacting. At the same time in rough fields see that seeds are getting covered with soil.<\/p>\n<p><strong>Nutrients Leached by Rains<\/strong> \u2013 The most mobile of the nutrients are nitrogen, sulfur and boron. Each scenario is different but consider replacing lost nutrients at sidedressing time between first square and first bloom. Keep in mind that saturated soils early on and through the season may mean that your nutrients have not leached but compromised root systems cannot pull them up.<\/p>\n<p>&nbsp;<\/p>\n<p><strong><u>PEANUT <\/u><\/strong><strong>Update: Compiled from specialists- Mark Abney, Scott Monfort and Bob Kemerait<\/strong><strong>\u00a0<\/strong><\/p>\n<ul>\n<li>Young peanuts showing signs of yellowing and stunting is likely the result of saturated soils. The nodules on the peanut roots need oxygen to do their job of fixing nitrogen. Prolonged wet periods can cause nodules to become inactive. Check by pinching them in half to see if they are pink, red or purple inside. If not they may not be fixing nitrogen. Reduced nodulation could call for a rescue N application in some cases.<\/li>\n<\/ul>\n<ul>\n<li>June planted acres are at increased risk for late season caterpillar infestations. Scout on time and treat according to thresholds. So far there have been reports of lesser cornstalk borers and southern corn rootworm from across the state. Thrips populations have be very variable this year. We are beginning to see tomato spotted wilt virus associated with their feeding.<\/li>\n<li>Aspergillus crown rot has been a problem in wet fields. Conditions are perfect for white mold and leaf spot. We have new fungicide Peanut Rx for 2018 call me or come by for a copy. I can also email out fungicide spray sheets from several different companies if you need it.<\/li>\n<\/ul>\n<p>&nbsp;<\/p>\n<p><strong><u>CORN <\/u><\/strong><strong>Update: Compiled from specialist- Bob Kemerait<\/strong><\/p>\n<ul>\n<li>To date there has been no southern rust found in Georgia. Conditions have been favorable for it. Preventative sprays should be applied at the pre or tassel stage for rust with a strobilurin fungicide.<\/li>\n<li>There have been reports of southern and northern corn leaf blight. Sprays for this are best when done at the V6-V10 stage for late planted corn. Use a combination product \u2013 strobilurin + triazole or strobilurin + SDHI for this disease.<\/li>\n<li>Strobilurin fungicides or combination products tend to have a longer protective window than just triazoles alone. Making a fungicide application at this point in the season is a grower preference if there are no diseases present in the field.<\/li>\n<li>Corn smut has been abundant this year (the blue moldy looking stuff that takes over the ear). The wet weather has contributed to this. Unless the variety is extremely susceptible there is little yield loss.<\/li>\n<\/ul>\n<p>&nbsp;<\/p>\n<p><strong>Late Planted <u>SOYBEAN <\/u>Tips from UGA Specialist &#8211; Mark Freeman<\/strong><\/p>\n<p>In Georgia the optimum planting window for soybeans is May 10th thru June 10th, however, the planting window can be extended through June 30<sup>th<\/sup> if well adapted late maturing varieties are used. Although the planting window can be shifted later, one should still expect yield potential to decline about \u00bd to \u00be bushel\/A for every day planting is delayed after June 10.<\/p>\n<ul>\n<li><strong>Select the Correct Maturity Group<\/strong> \u2013 Group V and VI beans still respond with decreased yield at later planting dates. Group VII has consistent yield over all late planting dates. If early varieties are planted to late they will flower before they grow enough to produce optimal yield.<\/li>\n<li><strong>Increase Seeding Rates <\/strong>\u2013 consider moving from 6 seed\/ft to 9 seed\/ft (90,000 per acre to 130,000)<\/li>\n<li><strong>Decrease row Spacing <\/strong>\u2013 more narrow row plantings increase yield by 0.7% per inch and can help with weed control<\/li>\n<li><strong>Watch Pests <\/strong>\u2013 late planted beans will see higher numbers of stink bugs and foliage feeding caterpillars. Identify the pest and treat accordingly. Use Dimilin at the R2-R3 stage as a preventative for velvetbean caterpillar and green cloverworm.<\/li>\n<\/ul>\n<p>&nbsp;<\/p>\n<p><strong>General Comment on <u>All ROW Crops<\/u> <\/strong><\/p>\n<p>Wet soils have altered the way many people apply herbicides. If you have an escaped weed or delay in your spray schedule that you need input on, please give me a call. We will help you find the best option for your situation.<\/p>\n","protected":false},"excerpt":{"rendered":"<p>This update contains tips on managing late planted cotton and soybeans. It also includes an update on peanuts and corn. This growing season has been a challenge thus far if there is anything UGA Extension can assist with give us a call.<\/p>\n","protected":false},"author":153,"featured_media":0,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[44,36,116,72,29,37],"tags":[17,160,161,50],"class_list":["post-711","post","type-post","status-publish","format-standard","hentry","category-corn","category-cotton","category-entomology","category-fertilizer","category-pecans","category-soybean","tag-corn","tag-late-cotton","tag-late-soybeans","tag-peanut"],"_links":{"self":[{"href":"https:\/\/site.extension.uga.edu\/plowpoints\/wp-json\/wp\/v2\/posts\/711","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/site.extension.uga.edu\/plowpoints\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/site.extension.uga.edu\/plowpoints\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/site.extension.uga.edu\/plowpoints\/wp-json\/wp\/v2\/users\/153"}],"replies":[{"embeddable":true,"href":"https:\/\/site.extension.uga.edu\/plowpoints\/wp-json\/wp\/v2\/comments?post=711"}],"version-history":[{"count":1,"href":"https:\/\/site.extension.uga.edu\/plowpoints\/wp-json\/wp\/v2\/posts\/711\/revisions"}],"predecessor-version":[{"id":712,"href":"https:\/\/site.extension.uga.edu\/plowpoints\/wp-json\/wp\/v2\/posts\/711\/revisions\/712"}],"wp:attachment":[{"href":"https:\/\/site.extension.uga.edu\/plowpoints\/wp-json\/wp\/v2\/media?parent=711"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/site.extension.uga.edu\/plowpoints\/wp-json\/wp\/v2\/categories?post=711"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/site.extension.uga.edu\/plowpoints\/wp-json\/wp\/v2\/tags?post=711"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}