![]() The solid fraction is more likely to contribute positively to soil humus in annual systems. In the intercropping system, complete substitution was possible. The separated biogas digestates were found to have a comparable effect to mineral fertilizer on biomass yield, but this varied with cropping system. The grassland and intercropping systems were less susceptible to weather conditions, producing a more constant biomass supply irrespective of site, treatment and year. Maize achieved relatively high yields in years with favorable weather conditions unfavorable conditions led to low yields. Fertilization with solid digestate fraction produced lowest yields in all fertilized plots, with results very often not significantly different from the untreated control. The influences of site, cropping system, year and fertilization treatment were highly significant.The mineral fertilizer and combination “liquid digestate fraction + mineral fertilizer” mostly led to the highest quantitative biomass yields in all cropping systems at both sites. combined liquid digestate fraction and mineral fertilizer.combined solid digestate fraction and mineral fertilizer.mineral fertilizer (calcium ammonium nitrate).Five N fertilization treatments were applied, each at 150 kg N ha −1: The fertilizing performance was assessed in a split-plot design with four replications using three cropping systems: (1) perennial grassland (2) intercropping of triticale and clover grass (3) silage maize. The objectives were to determine (1) whether separated digestates can complement or substitute mineral fertilizers and (2) their effect on long-term yield performance in different biomass cropping and fertilization systems. Multi-year field experiments were established at two challenging sites in south-west Germany in 2010 results from 6 years are shown here. These contain valuable nutrients and can be used in agriculture to close the nutrient cycle. This study investigates the fertilizing potential of separated biogas digestates. Department Biobased Products and Energy Crops, Institute of Crop Science, University of Hohenheim, Stuttgart, Germanyĭigestates produced by the increasing number of biogas plants require appropriate treatment or recycling.NOTE: This ebook focuses on how to produce both solid and liquid fertilizers.Andrea Ehmann * Ulrich Thumm Iris Lewandowski The manufacturer must also Endeavour to produce what is most needed by the majority of the farmers. It is necessary that the farmer obtain professional advice from agricultural extension workers, soil experts, or the local agricultural Ministry before applying any fertilizer. Nevertheless, N-P-K fertilizers are the commonest in the market. The variety of fertilizers in the market means that the farmer can find a product to meet any need. Note that the percentages of these elements reflect the types of major elements needed in the particular soil type. Hence, we can find the following concentrations in the market:ģ0:0:0 – Purely nitrogen fertilizer (P & K are absent)Ġ:40:0 – Purely phosphorus fertilizer (N & K are absent)Ġ:0:30 – Purely Potassium fertilizer (N & K are absent) 5:10:5 means Nitrogen 5%, Phosphorus 10%, potassium 5%. ![]() can be represented as 16:16:16 meaning that nitrogen is 16%, phosphorus 16%, and potassium 16%. fertilizers means a fertilizer that contains Nitrogen, phosphorus, and potassium. The symbols of the elements conventionally depict the major elements contained in any fertilizer. Manures or composts are also classified as organic or farm yard fertilizers. They are organic and inorganic, found in solid or liquid forms. There are two major types of fertilizers. The others are the trace ones that include Iron (Fe), Zinc (Zn), and Magnesium (MG) among others. ![]() These elements include major ones like Nitrogen (N), Phosphorus (P), Potassium (K), and Sulphur (S). But what are fertilizers?įertilizers are mixtures of substances added to the soil to supply elements essential to the growth of plants. This is the reason why the demand for fertilizer is at the rooftop. Farmers recognize the importance of timely and adequate fertilizer application to enhance plant growth and bumper harvest. One of the areas that need attention is the use of fertilizers to enhance crop yield. The need for sufficient production of staple and other foods has remained a major challenge to humanity, especially in poor economies like African nations.
0 Comments
Leave a Reply. |
AuthorWrite something about yourself. No need to be fancy, just an overview. ArchivesCategories |