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