Soil Data Explorer - LUDLOW

Official Series Description

Lab Data Summary

Aggregate lab data for the LUDLOW soil series. This aggregation is based on all pedons with a current taxon name of LUDLOW, and applied along 1-cm thick depth slices. Solid lines are the slice-wise median, bounded on either side by the interval defined by the slice-wise 5th and 95th percentiles. The median is the value that splits the data in half. Five percent of the data are less than the 5th percentile, and five percent of the data are greater than the 95th percentile. Values along the right hand side y-axis describe the proportion of pedon data that contribute to aggregate values at this depth. For example, a value of "90%" at 25cm means that 90% of the pedons correlated to LUDLOW were used in the calculation. Source: KSSL snapshot (updated 2020-03-13). Methods used to assemble the KSSL snapshot used by SoilWeb / SDE

Pedons used in the lab summary:

MLRA	Lab ID	Pedon ID	Taxonname	CI	NSSL / NASIS Reports	Link To SoilWeb GMap
145	91P0822	S1991MA011004	Ludlow	6	Primary | Supplementary | Taxonomy | Pedon | Water Retention | Correlation | Andic Soil Properties	42.5389755,-72.5861999
149B	96P0174	S1995NY085034	Ludlow	5	Primary | Supplementary | Taxonomy | Pedon | Water Retention | Correlation | Andic Soil Properties	40.5741119,-74.158226

Water Balance

Monthly water balance estimated using a leaky-bucket style model for the LUDLOW soil series. Monthly precipitation (PPT) and potential evapotranspiration (PET) have been estimated from the 50th percentile of gridded values (PRISM 1981-2010) overlapping with the extent of SSURGO map units containing each series as a major component. Monthly PET values were estimated using the method of Thornthwaite (1948). These (and other) climatic parameters are calculated with each SSURGO refresh and provided by the fetchOSD function of the soilDB package. Representative water storage values (“AWC” in the figures) were derived from SSURGO by taking the 50th percentile of profile-total water storage (sum[awc_r * horizon thickness]) for each soil series. Note that this representation of “water storage” is based on the average ability of most plants to extract soil water between 15 bar (“permanent wilting point”) and 1/3 bar (“field capacity”) matric potential. Soil moisture state can be roughly interpreted as “dry” when storage is depleted, “moist” when storage is between 0mm and AWC, and “wet” when there is a surplus. Clearly there are a lot of assumptions baked into this kind of monthly water balance. This is still a work in progress.

Sibling Summary

Siblings are those soil series that occur together in map units, in this case with the LUDLOW series. Sketches are arranged according to their subgroup-level taxonomic structure. Source: SSURGO snapshot (updated 2024-02-21), parsed OSD records (updated 2023-10-02) and snapshot of SC database (updated 2023-10-02).

Select annual climate data summaries for the LUDLOW series and siblings. Series are sorted according to hierarchical clustering of median values. Source: SSURGO map unit geometry and 1981-2010, 800m PRISM data (updated 2023-10-09).

Geomorphic description summaries for the LUDLOW series and siblings. Series are sorted according to hierarchical clustering of proportions and relative hydrologic position within an idealized landform (e.g. top to bottom). Most soil series (SSURGO components) are associated with a hillslope position and one or more landform-specific positions: hills, mountain slopes, terraces, and/or flats. Proportions can be interpreted as an aggregate representation of geomorphic membership. The values printed to the left (number of component records) and right (Shannon entropy) of stacked bars can be used to judge the reliability of trends. Small Shannon entropy values suggest relatively consistent geomorphic association, while larger values suggest lack thereof. Source: SSURGO component records (updated 2023-10-04).

There are insufficient data to create the 3D terrace figure.

There are insufficient data to create the 3D flats position figure.

Competing Series

Soil series competing with LUDLOW share the same family level classification in Soil Taxonomy. Source: parsed OSD records (updated 2023-10-02) and snapshot of the SC database (updated 2023-10-02).

Select annual climate data summaries for the LUDLOW series and competing. Series are sorted according to hierarchical clustering of median values. Source: SSURGO map unit geometry and 1981-2010, 800m PRISM data (updated 2023-10-09).

Geomorphic description summaries for the LUDLOW series and competing. Series are sorted according to hierarchical clustering of proportions and relative hydrologic position within an idealized landform (e.g. top to bottom). Proportions can be interpreted as an aggregate representation of geomorphic membership. Most soil series (SSURGO components) are associated with a hillslope position and one or more landform-specific positions: hills, mountain slopes, terraces, and/or flats. The values printed to the left (number of component records) and right (Shannon entropy) of stacked bars can be used to judge the reliability of trends. Shannon entropy values close to 0 represent soil series with relatively consistent geomorphic association, while values close to 1 suggest lack thereof. Source: SSURGO component records (updated 2023-10-04).

There are insufficient data to create the 3D mountains figure.

There are insufficient data to create the 3D terrace figure.

There are insufficient data to create the 3D flats position figure.

Soil series sharing subgroup-level classification with LUDLOW, arranged according to family differentiae. Hovering over a series name will print full classification and a small sketch from the OSD. Source: snapshot of SC database (updated 2023-10-02).

Block Diagrams

No block diagrams are available.

Map Units

Map units containing LUDLOW as a major component. Limited to 250 records.

Map Unit Name	Symbol	Map Unit Area (ac)	Map Unit Key	National Map Unit Symbol	Soil Survey Area	Publication Date	Map Scale
Ludlow silt loam, 3 to 8 percent slopes	40B	3797	3395752	9lnj	ct601	2003	1:12000
Ludlow silt loam, 2 to 15 percent slopes, extremely stony	42C	3502	3395754	9lnl	ct601	2003	1:12000
Ludlow-Urban land complex, 0 to 8 percent slopes	240B	1948	3395674	9lkw	ct601	2003	1:12000
Ludlow silt loam, 2 to 8 percent slopes, very stony	41B	1649	3395753	9lnk	ct601	2003	1:12000
Ludlow silt loam, 0 to 3 percent slopes	40A	1498	3395751	9lnh	ct601	2003	1:12000
Ludlow silt loam, 3 to 8 percent slopes	40B	2876	3400125	9lnj	ct602	2003	1:12000
Ludlow silt loam, 2 to 15 percent slopes, extremely stony	42C	575	3400127	9lnl	ct602	2003	1:12000
Ludlow silt loam, 0 to 3 percent slopes	40A	405	3400124	9lnh	ct602	2003	1:12000
Ludlow silt loam, 2 to 8 percent slopes, very stony	41B	400	3400126	9lnk	ct602	2003	1:12000
Ludlow-Urban land complex, 0 to 8 percent slopes	240B	74	3400047	9lkw	ct602	2003	1:12000
Wethersfield very fine sandy loam, 3 to 8 percent slopes	397B	148	279096	9cf3	ma011	2012	1:12000
Ludlow silt loam, 3 to 8 percent slopes	390B	120	279098	9cf5	ma011	2012	1:12000
Ludlow loam, 0 to 8 percent slopes, extremely stony	393B	673	277440	99pp	ma607	1975	1:15840
Ludlow loam, 3 to 8 percent slopes	390B	549	277438	99pm	ma607	1975	1:15840
Ludlow loam, 0 to 8 percent slopes, very stony	391B	284	277439	99pn	ma607	1975	1:15840
Ludlow loam, 8 to 15 percent slopes, extremely stony	393C	186	277441	99pq	ma607	1975	1:15840

Map of Series Extent

Approximate geographic distribution of the LUDLOW soil series. To learn more about how this distribution was mapped, or to compare this soil series extent to others, use the Series Extent Explorer (SEE) application. Source: generalization of SSURGO geometry (updated 2023-10-04).