| Zackenberg Ecological Research Operation (ZERO) | | Greenland |
| Yurimaguas | | Peru |
| Yield declines in long-term rice-wheat experiments in Asia | | |
| Yield and Soil Nutrient Changes in a Long-Term Rice-Wheat Rotation in India | | India |
| Yield and soil fertility trends in a 20-year rice-rice-wheat experiment in Nepal | | Nepal |
| Yield and crop quality as affected by different fertilizer rates and time of fertilization. Crop rotation productivity and P regime of soddy podsolic loamy sand soil as affected by new types of P fertilizers direct and residual effect. | | Belarus |
| Woodslee tile runoff rotation experiment | | Canada |
| Woburn Market Garden | | United Kingdom |
| Woburn Ley-Arable | | United Kingdom |
| Water use and growth of maize under water stress on soil after fertilizers | | Japan |
| Water balance and water quality from agricultural catchments -Wallumbilla, Queensland, Australia | | Australia |
| Water balance and water quality from agricultural catchments -Greenwood, Queensland, Australia | | Australia |
| Water balance and water quality from agricultural catchments -Greenmount, Queensland, Australia | | Australia |
| Waite Permanent Rotation Trial | | Australia |
| Wagga Wagga soil organic carbon experiment | | Australia |
| Valle del Mezquital/Distrito de Riego 03 | | Mexico |
| Uruguay LTSE | | Uruguay |
| Uruguary Crop-Pasture Rotations | | Uruguay |
| University of Pretoria long-term crop rotation and fertilization experiment | | South Africa |
| Ultuna long-term soil organic matter experiment | | Sweden |
| Ukraine, Poltava State Agricultural Experiment Station | | Ukraine |
| Triple Cereal Cropping and soil organic matter long-term experiment. | | China |
| To evolve and improve foundations of field crop cultivation of grains supporting increasing of soil fertility and its reproduction applying modern methods of farming stimulation of West Siberia steppe | | Russia |
| To evolve and adopt fertilizers system for plucking tea plantations of Kolchida variety | | Russia |
| To evolve a energy-saving, high-yielding, environmentally sound cropping systems for forest-steppe of Ciscaucasian Russia | | Russia |
| To develop environmentally sound cropping systems of grains (spring wheat, barley), supporting soil fertility, crops yields and quality of crops of West Siberia | | Russia |
| Tillage systems/cropping sequences trial C 1 | | Australia |
| Tidal Marsh Vegetation and Soil Development | | United States |
| Theoretical and technological basis of biogeochemical substances flow in agricultural landscapes | | Russia |
| The Olentangy River Wetland Research Park | | United States |
| The fertilizer application system in rotation | | Russia |
| Swift Current Old Crop Rotation Experiment | | Canada |
| Swift Current New Crop Rotation Experiment | | Canada |
| Subtropical No-Till Cropping Systems | | Brazil |
| Studying the chemical properties of meadow-brown soil of the Primorie in field rotation at long term fertilizers application and to evolve the standard targets of soil fertility relating to cultivated crops | | Russia |
| Study of field rotation | | Russia |
| Statischer Duengungsversuch Bad Lauchstaedt | | Germany (Deutschland) |
| Stable isotopes grassland-forest border, SOM | | Taiwan |
| SoyFACE | | United States |
| South Road Tillage | | United Kingdom |
| Soil Respiration, Temperature & Moisture (Prospect Hill, Harvard Forest) | | United States |
| Soil organic matter content and quality: effects of fertilizer applications, burning and trash retention on a long-term sugarcane experiment in South Africa | | South Africa |
| Soil formation in an abandoned borrow pit | | United States |
| Soil Fertility Experiment (DVI Thyrow/Germany) | | Germany (Deutschland) |
| Soil fertility and crop production as affected by selected nutrients under separate and combined application in irrigation conditions | | Ukraine |
| Soil changes in time within a dry meadow | | Russia |
| Soil Changes Accompanying Land Development (clearing) SCALD | | Australia |
| Sevilleta | | United States |
| SETRES | | United States |
| Scientific basis of effective fertilizer application in conservation cropping system of agricultural landscapes in arid steppe of Trans-Baikal | | Russia |
| Sanborn Field | | United States |
| San Dimas | | United States |
| Salem Road Sustainable Grazing Study | | United States |
| S.A.T.W.A.G.L. | | Australia |
| Rothansted carbon model tested in Japan | | Japan |
| Rothamsted C model, non-volcanic Japanese soils | | Japan |
| Role of Potassium in sustaining yields in rice-wheat experiment in Indo-Gangetic Plains of Nepal | | Nepal |
| Role of farmyard manure organic matter in increasing fertility of soddy podsolic soils | | Russia |
| Response of soil phosphorus content, growth and yield of wheat to long-term phosphorus fertilization in a conventional cropping system | | South Africa |
| Rates of sulfate ammonium, No. 27 | | Georgia |
| Rates of nitrogen fertilizers. The experiment no75 | | Georgia |
| Quebec long-term forest soil monitoring network | | Canada |
| Putnok - Hungarian long-term fertilizer experimental network | | Hungary |
| Puch Long Term Cropping / Soil Organic Matter Experiment (Bavaria) | | Germany (Deutschland) |
| Principles of fertilizers efficiency and agrochemical parameters dynamics following intensive chemicalization system | | Ukraine |
| Praha - Ruzyne | | Czech Republic |
| Physical and chemical properties of an entic haplustoll under different crop sequences in the semi-arid Pampean region | | Argentina |
| Permanent Manurial Experiment under rice monoculture, Madurai, Tamil Nadu, India | | India |
| permanent manurial experiment in Kovilpatti, Tamil Nadu, India | | India |
| Permanent fertilization experiment at Bahtim, Egypt | | Egypt |
| Pendleton Residue Management | | United States |
| Pellston Nitrogen Addition Study | | United States |
| Park Grass | | United Kingdom |
| Pantnagar Centre, Uttar Pradesh (All India Coordinated Research Project on Long-Term Fertilizer Experiments) | | India |
| Palace Leas Meadow Hay Plots | | United Kingdom |
| Organic and Mineral Fertilizers II, N and C balances, RAC. P11 | | Switzerland (Confoederatio Helvetica) |
| Organic and mineral fertilizers I, N and C balances RAC. P24 | | Switzerland (Confoederatio Helvetica) |
| Organic and mineral fertilizers combinations and their application in crop rotation with green manure on sandy soils | | Russia |
| Optimization of organic & mineral fertilizers rates in flax rotation based on long-term fertilization influence on agrochemical soil properties | | Russia |
| OM and rice profitability | | |
| Olustee Fire Plots | | United States |
| Olustee Fire Plots | | United States |
| Old Rotation, Cotton Alabama USA | | United States |
| Old Permanent Manurial Trial | | India |
| NZ FACE Experiment | | New Zealand |
| Nuuk Basic (NERO) | | Greenland |
| Nutrient Deficiency Experiment (DIV, Thyrow). | | Germany (Deutschland) |
| Niwot Ridge Long Term Ecological Research Site | | United States |
| Nitrogen Fertilizer Trials In Nigeria | | Nigeria |
| Nippon Foundation CIAT project | | Thailand |
| New Permanent Manurial Trial | | India |
| New experimental field | | Ukraine |
| Nahrstoffverhaltnisversuch | | Germany (Deutschland) |
| Nahrstoffmangelversuch | | Germany (Deutschland) |
| Nagyhorcsok - Hungarian long-term fertilizer experimental network | | Hungary |
| N2 fixation in paddy soils | | Japan |
| N Mineralization, N20 production, microbes and sewage sludge | | Japan |
| Multiple-factor stationary field trial on studing of resource saving technologies of soil tillage in cropping systems of Siberia | | Russia |
| Muencheberg Long Term Fertilizer Experiment V140/00 | | Germany (Deutschland) |
| Mt Murchison Fallow Management Trial | | Australia |
| Mosomnagyarovar - Hungarian long-term fertilizer experimental network | | Hungary |
| Morrow Plots | | United States |
| Monocultures in Central Chile | | Chile |
| Monitoring the long-term effects of management practices on site productivity in South African forestry | | South Africa |
| Monitoring of fertility of ordinary carbonate chernozem at long-term irrigation and systematic fertilizers application in landscape specific agriculture of Kabardino-Balkaria | | Russia |
| Models of high & sustained crop yield with standart quality parameters based on minimal energy resources & ecological balance of agroecosystems | | Ukraine |
| Missouri LTSP project | | United States |
| Mid-Term Tillage Experiments | | Mexico |
| Methods of ecologically adaptive management of processes agrochemical influences on soil-plant system for increasing soil fertility of acidic soddy-podzolic soil, productivity and sustainability of agroecosystems in Kostroma Oblast | | Russia |
| Meckenheim II | | Germany (Deutschland) |
| McMurdo Dry Valleys | | Antarctica |
| Manistee National Forest - Nitrogen Deposition | | United States |
| Mallee wheat rotation and fallow experiment | | Australia |
| Magruder Plots | | United States |
| Luquillo Puerto Rico | | United States |
| LT Field Expiment in Sweden: effects of org. and inorganic fertilizers on soil fertility and crop quality | | Sweden |
| Longterm fertilization experiment on rice paddy | | China |
| Long-Term Tillage Study (Wooster Triplett-VanDoren) | | United States |
| Long-term Tillage Study (S. Charleston - Western ARS) | | United States |
| Long-term Tillage Study (Hoytville - Northwest ARS) | | United States |
| LONG-TERM TILLAGE EFFECTS ON PHYSICAL PROPERTIES OF ERODED SOIL | | United States |
| Long-term tillage and maize monoculture effects on a tropical Alfisol in western Nigeria. II. Soil chemical properties | | Nigeria |
| Long-term tillage and maize monoculture effects on a tropical Alfisol in western Nigeria | | Nigeria |
| Long-term tillage and crop rotation in southern Brazil | | Brazil |
| Long-term tillage (C and D) | | United States |
| Long-term static fertilizer experiments in Skierniewice | | Poland |
| Long-Term Soil Productivity Study-Texas installations | | United States |
| Long-Term Soil Productivity Study-LA1 installation | | United States |
| Long-term Soil Fertility Experiment, Orja | | Sweden |
| Long-term Soil Fertility Experiment in Rice-Wheat | | India |
| Long-term N, P, K fertilization of cassava and soil chemical properties in N Vietnam | | Vietnam |
| Long-Term Maize, Sorghum, and Millet Monoculture Effects on an Argentina Typic Ustipsamment | | Argentina |
| Long-term Fertilization Trial | | Germany (Deutschland) |
| Long-term effects of wheat residue management on some fertility indicators of a semi-arid Plinthosol | | South Africa |
| Long-term effects of fertilization on the forms and availability of soil phosphorus in rice paddy | | South Korea |
| Long-Term Effects of Cropping Systems and Fertilizers on Soil Physical Properties | | United States |
| Long-Term effect of Tillage systems on winter field crops in dryland Mediterranean conditions | | Spain (Espana) |
| Long-term effect of farmyard manure and N on yield of pearl millet-wheat cropping sequence. | | India |
| Long-term Ecological Research in Row Crop Agriculture | | United States |
| Long-Term Continuous Cropping Experiment | | Philippines |
| Long-term compost and fertilizer application on soil phosphorus status under paddy cropping system | | South Korea |
| Long-term changes in soil organic matter under conventional tillage and no-tillage systems in semiarid Morocco | | Morocco |
| Long Term Manurial Experiments in Tamil Nadu | | India |
| Long term changes in the distribution and delta N-15 values of individual soil amino acids in the absence of plant and fertiliser inputs | | France |
| Liming efficiency on different fertilizer type and rates background | | Ukraine |
| Lethbridge: Rotation U - irrigated cropping system | | Canada |
| Lethbridge: Rotation 120 | | Canada |
| Lethbridge Historical Dryland Study (Rotation ABC) | | Canada |
| Legume / cereal rotation on red soil | | Australia |
| Legume / cereal rotation on black soil | | Australia |
| Land Use Experiment (DIII, Berlin-Dahlem/Germany) | | Germany (Deutschland) |
| Lancaster Rotation, Wisconsin | | United States |
| Lake Wheeler Biochar Field Experiment | | United States |
| La Selva | | Costa Rica |
| L 28, Effect of N-fertilization by different organic fertilization | | Germany (Deutschland) |
| Korean Long-term Ecological Research - Mt. Jumbong | | South Korea |
| Konza Prairie | | United States |
| Kompolt - Hungarian long-term fertilizer experimental network | | Hungary |
| Keszthely - Hungarian long-term fertilizer experimental network | | Hungary |
| Kellogg Biological Station LTER | | United States |
| Karcag - Hungarian long-term fertilizer experimental network | | Hungary |
| Kansas Biotic Succession Facility | | United States |
| Jabalpur Centre, Madhya Pradesh (All India Coordinated Research Project on Long-Term Fertilizer Experiments). | | India |
| Iregszemcse - Hungarian long-term fertilizer experimental network | | Hungary |
| Influence of systematic fertilization on soil | | Russia |
| Influence of different improved nutrition regime factors on tea plantation productivity. The experiment no 68 | | Georgia |
| Influence of continuous cultivation on crop productivity and deep chernozem fertility | | Russia |
| Influence of continuous black fallow on deep chernozem fertility | | Russia |
| Influence of agricultural land management on organic matter content, microbial activity and aggregate stability in the profiles | | South Africa |
| Impacts of managing loblolly pine plantations for biofuels production on site productivity and sustainability | | United States |
| Hubbard Brook Sandbox Study | | United States |
| Hubbard Brook Sandbox Study | | United States |
| Hubbard Brook Ecosystem Studies | | United States |
| Hubbard Brook Ecosystem Studies | | United States |
| Horseshoe Bend Agroecosystem Experiment: Conventional tillage, no-tllage, and reforestation effects on soils | | United States |
| Hoosfield Continuous Barley | | United Kingdom |
| Hilo Eucalypt | | United States |
| Hajduboszormeny - Hungarian long-term fertilizer experimental network | | Hungary |
| Grassland Afforestation - Flooding Pampas | | Argentina |
| Glen Innes Rotation Experiment | | Australia |
| Gilat Research Center Long-Term Field Experiment | | Israel |
| Geescroft Wilderness | | United Kingdom |
| GCE LTER Soils | | United States |
| Forms of nitrogen fertilizers and time of ammonium nitrate application, No. 71 | | Georgia |
| Field crops productivity in the five–course crop rotation | | Russia |
| Fertilisation systems of organic and mineral fertilizers for field crops in crop rotation on leached chernozem | | Moldova |
| Fertilisation system on podzolic soil in Pre-Ural Region | | Russia |
| Fertilisation system for sugar beet and other crops in beet rotation | | Russia |
| Fernow Long Term Soil Productivity | | United States |
| Farmyard Manure, fertilizers and green manuring in rice-wheat systems in Bhutan | | Bhutan |
| Experimental Station. Effect of main types and combination of fertilizers on crop rotation productivity and soil parameters | | Ukraine |
| Essai permanent | | Belgium |
| EM89 | | Australia |
| Efficiency of low-analysis and high-analysis concentrated fertilizers (experiment 4). | | Russia |
| Efficiency of intermittent mineral fertilizers application in field crop rotation | | Russia |
| Efficiency of fertilization in combination with application of plant protection chemicals in arable crop rotation | | Russia |
| Efficiency of different ratios of mineral and organic fertilizers in crop rotation | | Russia |
| Efficiency of different rates and combinations of FYM and fertilizers on sandy loam podzoluvisoils | | Russia |
| Effects of long-term application of slurry on grassland cut for silage | | United Kingdom |
| Effects of Lime and Crop Residue on Soil Fertility and Crop Yield on Acidic soil under Rice-Rice-Soybean Cropping Sequence. | | Taiwan |
| Effects of deforestation on grass biomass and soil nutrient status in miombo woodland, Zambia | | Zambia |
| Effect of tillage system on growth, maturity and yield of corn and soybean. | | United States |
| Effect of systematic straw application on humus content and nitrogen pool of soil | | Russia |
| Effect of systematic fertilization on yield, crop quality parameters and fertility of calcareous chernozem | | Moldova |
| Effect of organic, mineral and organic-mineral fertilizers, applied in equivalent NPK rates, on crop rotation productivity and calcareous chernozem fertility | | Moldova |
| Effect of organic and mineral fertilizers on humus balance and crop rotation productivity in Zavolzhie steppe | | Russia |
| Effect of organic and mineral fertilisation systems on crop productivity and fertility of grey forest soil | | Moldova |
| Effect of manure and mineral fertilisation systems on crop productivity and ordinary chernozem soil fertility | | Moldova |
| Effect of long-term phosphorite application on agrochemical soil properties of podzolic brown soil, crops yields and quality of crop production | | Russia |
| Effect of long-term organic and mineral fertilizers application for soil attributes, yeild and quality of production of main crops in crop rotation | | Russia |
| Effect of long-term mineral fertilizers varieties application and their combinations on fertility of meadow-brown soil and crops yield in field rotation | | Russia |
| Effect of long-term mineral fertilizers application in increasing doses on fertility of meadow-brown soil and crop yield in field rotation | | Russia |
| Effect of long-term mineral fertilizers application in increasing doses in combination with manure on fertility of meadow-brown soil and crop yield in potato rotation | | Russia |
| Effect of long-term mineral fertilizers application in increasing doses in combination with manure on fertility of meadow-brown soil and crop yield in potato rotation | | Russia |
| Effect of long-term manure, mineral fertilizers and ameliorants applications and their combinations on fertility of meadow-brown soil and crops yields | | Russia |
| Effect of long-term fertilizers and lime applications on pH and nutrient pool in soil | | Russia |
| Effect of long-term fertilisation systems application for productivity of grain-row crop rotation, production quality and soddy podsolic soil fertility | | Russia |
| Effect of long term mineral fertilizer application and tillage on productivity of crops and soil fertility | | Russia |
| Effect of lime rates under split and bulk application | | Russia |
| Effect of increasing fertilizers doses for productivity of field rotation and fertility of soddy podsolic soil in factoric experiment | | Russia |
| Effect of fertilizers input on crop capacity and soil fertility as main parameters in agricultural monitoring programm for South Ukraine ordinary chernozems | | Ukraine |
| Effect of different factors on tea plantation productivity. The experiment no80. | | Georgia |
| Effect of chemical ameliorators repeated application in increasing doses on acid-base properties of meadow-brown soil and crops yield in field rotation | | Russia |
| Ecologically balanced fertilizer systems for crop rotations on blind tile drained soil providing a high yield and crop quality parameters and increasing soil fertility | | Ukraine |
| Dynamics of basic agrochemical parameters and fertility of soddy podsolic loamy sand soil under limited application of mineral and organic fertilizers (field 1) & Residual effect of fertilization on crop productivity and quality in crop rotation (field 2) | | Belarus |
| Duration of lime effect under split and bulk application on soil properties and crop yield (First establishment) | | Russia |
| Duke Forest CO2 Experiment (FACE) | | United States |
| Dobrowa Forest Amelioration Experiment | | Austria |
| DNPK Trial | | Nigeria |
| DIRT: Detrital Input, Removal, and Transfer at H.J. Andrews | | United States |
| DIRT: Detrital Input, Removal, and Transfer (University of Michigan Biological Station) | | United States |
| DIRT Litter Manipulation Experiment | | United States |
| Different rates of superphosphate and their aftereffect. The experiment no42 | | Georgia |
| Different forms of nitrogen fertilizers, No. 34 | | Georgia |
| Deherain plots | | France |
| Debrecen Long-term experiment | | Hungary |
| Czarny Potok | | Poland |
| Crop-pasture system | | Brazil |
| Crop yield and quality parameters, soil fertility as affected by medium and high rates of manure and fertilizers application | | Ukraine |
| Crop rotation/fertilization trial F1-07 (Seehausen) | | Germany (Deutschland) |
| Crop rotation system with maximum utilization of biological nitrogen | | Russia |
| Crop residues as a source of typical chernozem fertility and productivity of crops in rotation in irrigated and non-irrigated conditions | | Ukraine |
| Crop production and soil properties of typical Chernozem as affected by fertilization in Dneepre left bank, Ukraine forest steppe region | | Ukraine |
| Coweeta Hydrologic Laboratory - USDA Forest Service | | United States |
| CORN AND SOYBEAN RESPONSE TO TILLAGE AND ROTATION SYSTEMS ON A DARK PRAIRIE SOIL: 25 YEAR REVIEW | | United States |
| Continuous rye | | Ukraine |
| Constructed and Natural Tidal Salt Marshes | | United States |
| Comparative efficiency of FYM & inorganic fertilizers (experiment 2) | | Russia |
| Comparative efficiency of FYM & inorganic fertilizers (experiment 1) | | Russia |
| Combination trial F1-70 | | Germany (Deutschland) |
| Chronic Nitrogen Amendment Experiment | | United States |
| China FACE | | China |
| Central Arizona - Phoenix Long-Term Ecological Research Site | | United States |
| Center for Environmental Farming Systems | | United States |
| Cedar Creek Ecosystem Science Reserve | | United States |
| Calhoun Long-Term Soil-Ecosystem Experiments | | United States |
| Butler County Industrial Pine Forest, AL USA | | United States |
| Burning causes long-term changes in soil organic matter content of a South African grassland | | South Africa |
| BT1 - Long-term sugarcane trial | | South Africa |
| Broom's Barn - Long Term Experiment No. 2 | | United Kingdom |
| Broadbalk Winter Wheat Experiment | | United Kingdom |
| Brigalow Catchment Study | | Australia |
| Breton Plots | | Canada |
| Breeding of Improved Potato Cultivars | | Argentina |
| Biology of Forest Growth | | Australia |
| Biloela Tillage Experiment | | Australia |
| Billa Billa Fallow Management Experiment | | Australia |
| Bicserd - Hungarian long-term fertilizer experimental network | | Hungary |
| Bhubaneswar Centre, Orissa (All India Coordinated) | | India |
| Beet rotations of Russian Central Chernozem Zone | | Russia |
| Bangabandhu Sheikh Mujibur Rahman Agricultural University (BSMRAU) research farm | | Bangladesh |
| Baltimore urban long-term ecological research project | | United States |
| Askov Long-Term Experiments on Animal Manure and Mineral Fertilizers - Sandmarken | | Denmark |
| Askov Long-Term Experiments on Animal Manure and Mineral Fertilizers - Lermarken | | Denmark |
| Arlington Plots, Wisconsin | | United States |
| Arctic Long-Term Ecological Research | | United States |
| Aichi rice studies | | Japan |
| A comparison of strategies for ameliorating subsoil acidity: I. Long-term growth effects | | South Africa |
| 30 year experiment involving various lengths of pasture alternating with field crops like corn, sunflower, wheat and soybean experiment | | Argentina |
