{"population_id":"ANN_67","species":"Helianthus annuus","country":"United States","sitename":"Missouri","location_description":"Off Hwy 71N, between Road 140 and the next cross street north","elevation":324,"latitude":40.07698,"longitude":-94.86874,"description":"Grassy roadside and deep irrigation ditch/ravine with shrubby vegetation","climate_variables":[{"name":"MAT","value":11.1,"description":"mean annual temperature (°C)"},{"name":"MWMT","value":25.1,"description":"mean warmest month temperature (°C)"},{"name":"MCMT","value":-4.4,"description":"mean coldest month temperature (°C)"},{"name":"TD","value":29.5,"description":"temperature difference between MWMT and MCMT, or continentality (°C)"},{"name":"MAP","value":923.0,"description":"mean annual precipitation (mm)"},{"name":"MSP","value":571.0,"description":"May to September precipitation (mm)"},{"name":"AHM","value":22.9,"description":"annual heat-moisture index (MAT+10)/(MAP/1000))"},{"name":"SHM","value":43.9,"description":"summer heat-moisture index ((MWMT)/(MSP/1000))"},{"name":"DD_0","value":393.0,"description":"degree-days below 0°C, chilling degree-days"},{"name":"DD5","value":3132.0,"description":"degree-days above 5°C, growing degree-days"},{"name":"DD_18","value":3148.0,"description":"degree-days below 18°C, heating degree-days"},{"name":"DD18","value":663.0,"description":"degree-days above 18°C, cooling degree-days"},{"name":"NFFD","value":212.0,"description":"the number of frost-free days"},{"name":"bFFP","value":115.0,"description":"the day of the year on which FFP begins"},{"name":"eFFP","value":288.0,"description":"the day of the year on which FFP ends"},{"name":"FFP","value":174.0,"description":"frost-free period"},{"name":"EMT","value":-31.4,"description":"extreme minimum temperature over 30 years"},{"name":"EXT","value":41.6,"description":"extreme maximum temperature over 30 years"},{"name":"Eref","value":965.0,"description":"Hargreaves reference evaporation (mm)"},{"name":"CMD","value":161.0,"description":"Hargreaves climatic moisture deficit (mm)"},{"name":"RH","value":59.0,"description":"mean annual relative humidity (%)"}],"soil_variables":[{"name":"OM","value":2.3,"description":"organic matter (%)"},{"name":"P1","value":17.0,"description":"phosphorus, weak Bray (ppm)"},{"name":"P2","value":42.0,"description":"phosphorus, strong Bray (ppm)"},{"name":"BICARB","value":28.0,"description":"sodium bicarbonate (ppm)"},{"name":"K","value":323.0,"description":"potassium (ppm)"},{"name":"MG","value":528.0,"description":"magnesium (ppm)"},{"name":"CA","value":4861.0,"description":"calcium (ppm)"},{"name":"NA","value":153.0,"description":"sodium (ppm)"},{"name":"PH","value":7.8,"description":"soil pH"},{"name":"CEC","value":30.2,"description":"cation exchange capacity (meq/100g)"},{"name":"PERCENT_K","value":2.7,"description":"percent base saturation K (%)"},{"name":"PERCENT_MG","value":14.6,"description":"percent base saturation Mg (%)"},{"name":"PERCENT_CA","value":80.5,"description":"percent base saturation Ca (%)"},{"name":"PERCENT_NA","value":2.2,"description":"percent base saturation Na (%)"},{"name":"SOL_SALTS","value":0.6,"description":"soluble salts (mmhos/cm)"}],"ecology_description":"Grassy roadside and deep irrigation ditch/ravine with shrubby vegetation"}