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Rain making Microbes

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New research show that microbes, especially bacteria and now fungi are the best at pulling moisture from the sky and making it rain. Dust and dirt particles can help it rain, but they are not as efficient as microbes. A recent article in Science Advances shows how the rain cycle works. Most rain starts as atmospheric water vapor and has to freeze into ice crystals before it comes down, turning into rain. Water in the atmosphere does not always freeze at 32OF. In fact, atmospheric water can stay liquid down to -40OF below zero. Temperatures are much lower at cloud level so clouds can stay full of moisture till it gets cold enough and attaches to something to freeze to cause ice crystals and then turn to rain. “Supercooled” water is a liquid cooler than normal freezing water because it has nothing to hold onto. For clouds to make snow, ice, or rain, it needs a “seed”, a tiny particle for the water molecules to grab onto to form an ice crystal before it falls from the sky as rain. Dust, s...

Corn and Soybean Phosphorus

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  Corn and soybeans require a steady supply of phosphorus (P) for early seedling vigor, root development, and stalk growth. P is used by plants in the lipid layer of the cell wall, as the backbone to genes (DNA and RNA) and for energy transfer (ATP). While P is an essential element (ranked 8th in the amount needed) it is one of the big 3 nutrients (N-P-K) because it yields more bushels per acre. Recommended corn and soybean soil test are between 20-40 ppm Mehlich. In corn, most rapid P uptake occurs after the V6 stage (six leaf collars). About 80% of absorbed P ends up in the grain. Post-tasseling P availability is critical to maximize yields. In early vegetative planting (Planting to V6), P is essential for root, shoot, and initial ear structure development. Severe P limitations early can permanently reduce yield potential. The most rapid uptake of corn P is V6 (vegetative stage) to R1 (reproductive stage). Demand spikes as biomass multiplies after V6 (4 to 6 weeks after planting)...

How Microbes Survive in Saturated Soils

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In the last few weeks, some areas have received a considerable amount of rain, some would say excess rain. While all microbes live on water films in the soil, too much water changes the microbial community. Excess water also displaces oxygen in the soil which is detrimental to both certain types of microbes and also to plant health. Roots need to be able to absorb oxygen for respiration to break down the root sugars for energy. Oxygen is the fuel to making both fires burn hotter and also for plants and animals to burn oxygen and sugars to produce energy. In flooded soils, the majority of obligate aerobic microbes die within 24-72 hours. As dissolved oxygen is depleted; biological activity drops by 50% within 48 hours. Then facultative and obligate anaerobic organisms take over. Obligate means that either oxygen is totally required (obligate aerobes) or not required (obligate anaerobe). Aerobe mean oxygen loving, anaerobe means absence of oxygen. Facultative microbes may live in either ...

Upcoming Weather & Screwworm

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After a week of relatively good weather, farmers have mostly finished planting. Crops are starting to grow with the warmer weather but crops are quite variable. Having spent some time out West in the states of eastern Nebraska, Iowa, Missouri, Wisconsin, Illinois, Indiana, and even Texas; overall the crops look good. That is until you get about an hour west of Fort Wayne and into Northwestern Ohio along US Route 30; then unfortunately, the ground is soggy and crops are still struggling to emerge. Eastern Indiana, and Northwest Ohio had some good crops but many fields just recently got planted. Now forecasted weather reports are coming out saying that the USA has a 60-100% chance of a “Super El Nino” developing between May and July and lasting until the end of the year. In El Nino years, surface water in the eastern Pacific Ocean warms up and this causes extreme weather across the USA. In extreme Super El Nino years, the sea surface temperatures rise 2.5-3.00C or causes about a 4.5-5.40...