Spring 2021 EN

More documents

Recommendations

Info

English Issue Biogas Journal | Spring_2021 “There’s no point fertilizing according to a pH level” Hans Grötzinger Round crumbly soil with good root density in a field of oats. Fertilization according to Albrecht/Kinsey The changing tillage methods go hand in hand with soil analyses according to the Albrecht/Kinsey method, which is applied to create a balanced proportion of nutrients in the soil and adequate levels of trace elements. Grötzinger explained the theory of “scarcity despite abundance”: “Today, you have to eat ten times more salad than after World War II to absorb the same amount of trace elements. This method will provide us with food items that are simply more nutritious.” The farmer, who comes from Hilling, works with the agricultural retailer Josef Hägler and with Geobüro Christophel, and supervises the soil samples of other operating farms in the region. The Albrecht/Kinsey method primarily focuses on the cation exchange capacity, which is a measure of the quantity of nutrient cations that occurs in interchangeable form and that is thus accessible to plants (for example C a2+ , Mg 2+ , K + ). It also used to examine the interaction of nutrient contents, for which there are special ratios, such as the carbon:nitrogen ratio: “Within two years, we adjusted the C:N ratio to 9:1 (10:1 would be ideal). We started off at 5:1,” said Grötzinger, “That’s too tight for most of the farms, no matter whether they have dairy cattle or biogas.” According to Grötzinger, another indication is the calcium:magnesium ratio: “Ideally, it would be 68:12. We had 75:11. Too much calcium prevents other nutrients from being absorbed.” Grötzinger also found that the pH level is not a decisive criteria: “There’s no point fertilizing according to a pH level.” In the past, too much calcium was often used in fertilization if the pH level was low. But he believes that if the nutrients are well-balanced, there will automatically be a good pH level of around 6.5. His farm was discovered to have a shortage of boron and sulphur. Sulphur deficiency is a widespread phenomenon, he said, but you need enough sulfur for nitrogen availability and to build up humus. Grötzinger recommends having soil analyses made during the soil dormancy period before the soil is fertilized – ideally in November. Repeated analyses should then be made on the same date after two or three years. He recommends taking samples from a very good and a very bad area and from two or three average areas. A standard analysis costs around 100 Euros. photo: Grötzinger Biogaskontor Biogaskontor scratch-resistant scratch-resistant special glass special glass Köberle Köberle GmbH GmbH Köberle GmbH Bull‘s eyes Bull‘s for eyes any for application any Bull‘s application eyes for any application DLG approved DLG components approved components DLG approved compo for biogasplants for biogasplants for biogasplants scratch-resistant special glass With two With two inspection inspection glasses glasses Full control at a Full glance! control at a glance! With two inspection glasses Full control at a glance! r spacing tube For spacing or tube On steel or plate On with For steel spacing plate With with tube immersion or With On for immersion steel lookplate for with Over- look Underpressure With Over- immersion Underpressure for look Over- Underpressure Over- Underpressure core drilled hole core drilled customizable hole customizable sizecore drilled size hole around the corner customizable around the corner size relief device around relief ÜU-TT the device corner ÜU-TT relief device relief ÜU-GD ÜU-TT device ÜU-GD Ø300 + Ø400 mm Ø300 + Ø400 mm Ø300 + Ø400 mm for membrane for cover membrane digestors cover digestors for for membrane hard top cover digestors for hard digestors top digestors quipment: Lamps, Equipment: rosettes, Lamps, lining rosettes, sleeves, Equipment: lining sun covers, sleeves, Lamps, etc. sun covers, rosettes, etc. lining sleeves, sun covers, etc. ore features: More 10Air features: dosing units Air dosing for desulfurization, units More for features: desulfurization, measuring Air dosing systems, measuring units warn for systems, desulfurization, signs warn signs measuring systems, warn signs www.biogaskontor.de • info@biogaskontor.de • 89611 Obermarchtal, Germany • Tel +49(0)737595038-0 Over- Und relief dev for hard t www.biogaskontor.de www.biogaskontor.de • info@biogaskontor.de www.biogaskontor.de • info@biogaskontor.de • Germany • info@biogaskontor.de • Germany 89611 Obermarchtal 89611 Obermarchtal • Germany • Tel +49(0)737595038-0 • 89611 Tel +49(0)737595038-0 Obermarchtal • Tel +49(0)737
Biogas Journal | Spring_2021 English Issue photo: Christian Dany Digestate treatment with Leonardite and In-wa Quartz Organic fertilization with organic manure from the biogas plant is of prime important on Grötzinger’s farm. He separates the thick part of the digestate and in that way, extracts around 500 tons of solid phase per year. Grötzinger processes the liquid phase with Leonardite and In-Wa Quartz, which are both approved in organic farming. “The high proportion of grass clover produces 7 kilograms of nitrogen per cubic meter in the Catch crop of winter peas with triticale whole crop silage undersown by grass. nents HEAVY-DUTY MIXERS erpressure ice ÜU-GD op digestors 595038-0
Page 1 and 2: www.biogas.org German Biogas Associ
Page 3 and 4: Biogas Journal | Spring_2021 Editor
Page 5 and 6: Biogas Journal | Spring_2021 Englis
Page 9: Biogas Journal | Spring_2021 Englis
Page 17 and 18: AD & BIOGAS FEED TECHNOLOGY Biogas
Page 25 and 26: Triple Lifetime and Easiest Mainten

Spring 2021 EN

Create successful ePaper yourself

Delete template?

Save as template?