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2025 growing season: corn update. Alabama Extension

How are #soybeans doing in your neck of the woods? #ScienceForSuccess team member Eros Francisco wants to know! Check out this video with an update on soybean planting in Alabama.

Side-dressing N at another one of our NRCS on-farm trials near Auburn, AL.

Today we hosted the farmers who are part of the #TAPS project. They were excited to look at their plots and realized the differences in the corn response to nitrogen sources, rates and the impact of rainfall on nitrogen availability and losses.

Nematodes can be a big problem for row crops, and we got know how to fight them. Short-term option is to use chemical control (nematicides) and long-term option is to work with crop rotation. Here is an idea of what crops to avoid if there are nematodes in the field.

Proper identification of nutrient deficiencies in soybeans is critical for in-season corrections and long-term yield protection. Eros Francisco explains key symptoms and diagnostic rules in this video. Watch here: ow.ly/Xw3V50VOG7p

Nitrogen is the most important nutrient for crop production, but crop response may be limited when another one is not available. Check out this corn response to N with and without sulfur. More info to come!!!

Deer depredation to row crops is a #1 problem in many areas of the state. We’re researching options of deer repellents to prevent damage to crops and help farmers to succeed in their business. Thanks to Alfa Farmers W&FG for funding this project. Alabama Extension CSES Auburn University

"Given the uniformity of the response across these 46 sites, there is no evidence that foliar fertilizers increase soybean yield in the absence of visual symptoms of nutrient deficiency.” Insights regarding these trial sites can be found here: resources.ipmcenters.org/view/resource.…

Corn fields in North AL are presenting this problem. Holcus leaf spot caused by the bacterium Pseudomonas syringae results in small, round to oval spots on leaves. Wet and mild weather conditions are in favor of this. Fortunately, it has no impact on yield. Alabama Extension CSES Auburn University

First report of southern corn rust for 2025 comes from Jackson Co, FL. Thanks Caleb Traugh! While none yet known in GA, corn growers in extreme SW GA with corn at tassel or beyond should take threat seriously. Weather now very favorable for infection and spread. UGA Extension

Holcus leaf spot, a bacterial disease of corn. Symptoms appear as small round spots on leaves, about 1/4 in in dia; light tan color often w/t a brown/reddish border.  Spots 1st appear on lower leaves after warm wet weather. Not economically important #Corn Eros Francisco Crop Protection Network

Nitrogen deficiency in corn: yellowing of older leaves (typical V shape) and stunting of plants (limited growth). Stay tuned for more agronomic tips. Alabama Extension CSES Auburn University

Soybean field at beginning of blooming (R1) in Central Alabama. Although this field is blooming most of soybeans in the state are younger or have just been planted, specially in Northern AL.

Soybean field in Central AL showing bacterial blight symptoms. Disease caused by Pseudomonas savastanoi begin with angular lesions (small yellow to brown spots) that progress to dark center and yellowish halo. Fungicides are not a good option of control. Alabama Extension CSES Auburn University

First report of southern rust in GA in 2025; SW corner of Seminole Co not far from where found in Jackson Co FL. Corn now at soft dough stage. Corn in extreme SW GA should be protected with fungicide at VT and beyond. Weather very favorable. UGA ext

Be careful when applying liquid N fertilizers to corn. It has the potential to cause phytotoxic symptoms of leaf burn, necrosis, loss of leaves and plant stunting. Depends on the severity of injury, the effects may be visible for weeks after application. Alabama Extension CSES Auburn University