soil fertility Articles
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How to maintain soil fertility
In order to maintain soil fertility, some low-yield soil (acid soil, alkali soil and salt soil), chemical improvers and irrigation should be used to improve, remove obstacles and improve the fertility level. In addition, reasonable cultivation and rotation should be carried out to regulate the nutrients and water in the soil and prevent some nutrient deficiency and water vapor imbalance. 1. ...
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Long-term study of properties of a xerofluvent of the guadalquivir river valley under organic fertilization
The long-term effect of inorganic and organic fertilization in a vegetable crop rotation on soil chemical and biochemical properties was investigated in a trial in southern Spain. Two crops were grown in succession, potato (Solanum tuberosum L.) and a mixed-cropped strawberry–onion (Fragaria vesca L.–Allium cepa L.). Total organic carbon (TOC), Kjeldahl-N, bicarbonate-extractable P (Olsen-P), ...
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Phosphorus fertility effects on the expression of the low phytic acid barley phenotype
Low phytic acid (LPA) barley (Hordeum vulgare L.) cultivars partition phosphorus (P) in seed tissue differently than conventional wild-type (WT) barley cultivars. A reduction in seed phytic acid (myo-inositol-1,2,3,4,5,6-hexkisphosphate) is coupled with an increase in inorganic phosphorus (Pi). The response of the LPA characteristic to phosphate fertilization has not been previously investigated; ...
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Agronomic impact of earthworms, cow dung compost, vermicompost and chemical fertilisers on growth and yield of brinjal ( Solanum melongena )
The pot experiment was conducted to assess the impact of live earthworm + cattle dung (as feed), cow dung compost, vermicompost, chemical fertilisers and control (without fertiliser) on growth and yield of brinjal (S. melongena). Growth and yield parameters were significantly superior in the pots treated with live earthworms as compared to other fertiliser inputs at 5% level. The plant height ...
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Agronomically Speaking: Fall Fertility? From Soil Test to Prescriptions
Farmers understand that soil fertility is a key component of growing healthy and high yielding crops. While there is much debate on how we accomplish soil fertility and health, there are some general items that are helpful to remember. However, because it was an extremely wet year for many across the country it is even more important to soil test this year. Some of the nutrients ...
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Irrigated, no-till corn and barley response to nitrogen in Northern Colorado
Converting irrigated, conventional-till (CT) systems to no-till (NT) production systems can potentially reduce soil erosion, fossil fuel consumption, and greenhouse gas emissions. Nitrogen fertilization effects on irrigated corn (Zea mays L.) and malting barley (Hordeum distichon L.) yields in a corn-barley rotation were evaluated for 6 yr on a clay loam soil to determine the viability of using a ...
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Equivalency of broiler litter to ammonium nitrate as a cotton fertilizer in an upland soil
Estimates of litter value based on crop yield equivalency to inorganic fertilization may reflect the actual value of litter more accurately than estimates based on its N, P, and K content. The primary objective of this research was to identify a rate of broiler litter that results in cotton lint yield equivalent to inorganic N fertilization and to estimate litter value based on this yield ...
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Main Granulating Methods of NPK Compound Fertilizer Production
NPK fertilizer can supply many kinds of nutrients needed by crops at the same time. The economic benefit is obvious. The production cost can be reduced by using compound fertilizer. Compound fertilizer is not easy to agglomerate, easy to store and use, and is widely welcomed. How to select granulator for NPK fertilizer production line? Several main granulation methods are introduced here. 1. ...
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Farming Innovation: From Ammonia to AgTech Software
Just over a century ago, the Haber-Bosch process was invented in Germany, enabling the scalable production of copious amounts of ammonia for the very first time. This 1910 Eureka! moment meant farmers could fertilize their crops unlike ever before, growing food on a massive scale. So massive, in fact, a population explosion ensued – humankind went from 1.6 billion in 1900 to 7.7 billion in ...
By Vistex Inc
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Evaluation of zone soil sampling approaches for phosphorus and potassium based on corn and soybean response to fertilization
Soil sampling approaches have been compared based on soil-test variation. This study evaluated sampling approaches for P and K based on yield response to fertilization. Strip trials were established on four fields for P and three fields for K managed with corn (Zea mays L.) and soybean (Glycine max L. Merr.) rotations and evaluated 3 or 4 yr (27 site-years). Treatments replicated three to four ...
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Using Soil NPK Sensors to Improve Plant Nutrition
Introduction Plant nutrition is a critical aspect of sustainable agriculture, as it directly impacts the growth, development, and yield of crops. Traditional methods of fertilizer application often lead to over- or under-fertilization, resulting in poor plant growth or environmental pollution. With the advent of soil NPK sensors, however, farmers now have a precise and efficient tool to improve ...
By JXCT
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Interactive effects of tillage and mineral fertilization on soil carbon profiles
Both tillage and fertilizer management influence soil organic C (SOC) storage, but their interactive effects remain to be determined for various soil and climatic conditions. We evaluated the long-term effects of tillage (no-till, NT, and moldboard plowing, MP), and N and P fertilization on SOC stocks and concentrations in profiles of a clay loam soil (clayey, mixed, mesic Typic Humaquept). Corn ...
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The biofertilizer production method and process
Bio-organic fertilizer has high organic matter content, can improve soil, improve soil physical and chemical properties, enhance soil water retention, fertilizer conservation and fertilizer supply, and alleviate soil compaction caused by long-term use of chemical fertilizers; beneficial microorganisms in bio-organic fertilizer enter soil and soil Microorganisms form a symbiotic relationship with ...
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Biosolids increase soil aggregation and protection of soil carbon five years after application on a crested wheatgrass pasture
Biosolids application to rangelands and pastures recycles nutrients and organic matter back to soils. The effects of biosolids (20 and 60 dry Mg ha–1) and N+P fertilizer on soil aggregate stability, bulk density, aeration porosity, and total C and N of stable aggregates were evaluated 4 and 5 yr after surface application to a crested wheatgrass [Agropyron cristatum (L.) Gaertn.] pasture in the ...
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Nitrogen, tillage, and crop rotation effects on carbon dioxide and methane fluxes from irrigated cropping systems
Received for publication December 15, 2008. Long-term effects of tillage intensity, N fertilization, and crop rotation on carbon dioxide (CO2) and methane (CH4) flux from semiarid irrigated soils are poorly understood. We evaluated effects of: (i) tillage intensity [no-till (NT) and conventional moldboard plow tillage (CT)] in a continuous corn rotation; (ii) N fertilization levels [0–246 kg N ...
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Dairy cattle manure improves soil productivity in low residue rotation systems
Mineral fertilizer alone may not sustain soil productivity in cropping systems that return little crop residues to the soil, unless additional organic residues and/or manure is applied regularly to the soil. The objective of the present study was to assess the long-term effects of mineral fertilization (No fertilizer, PK, and NPK) and manure addition (0 and 20 Mg ha–1 yr–1) on soil physical and ...
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Phosphorus runoff is a big problem, but Florida is getting closer to a solution
Excess phosphorus runoff and emissions from urban areas and croplands, animal feedlots, sewage treatment plants, and combustion of fossil fuels has been blamed for the dead zone in the Gulf of Mexico, toxic algal blooms in Lake Erie and problems in numerous other lakes and rivers around the world. For years unwanted nutrients were also choking the Florida Everglades, but in a surprising ...
By Ensia
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Effects of agricultural production on phosphorus losses from paddy soils: a case study in the Taihu Lake Region of China
A field plot experiment was conducted on two types of paddy soils in the Taihu Lake Region of China from June 2000 through 2002 to assess phosphorus (P) losses by runoff and drainage flow and the effectiveness of rice–wheat double cropping on reducing P losses from paddy soils. Commercial NPK compound fertilizer and single superphosphate fertilizer were applied to furnish 0, 30, 150, and 300 kg P ...
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NPK Compound Fertilizer Development and Fertilizer Plant Production
Chemical fertilizer provides nutrients for continuous agricultural production, but single chemical fertilizer hasn't high utilization rate, limited promotion ability to crops, and a large amount of application is not conducive to crop growth. NPK compound fertilizer production has become the main trend of fertilizer. The granulation process of NPK fertilizer production line can make basic ...
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Disc granulator has many advantages in processing organic fertilizer particles
Disc granulator can process fertilizer into granules, and fertilizer granulation is an important process in organic fertilizer production line. The quality of granulation affects the quality of final fertilizer. Organic fertilizer is mainly derived from plants and animals. It is a carbon-containing material that is applied to the soil to provide plant nutrition as its main function. The waste ...
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