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. 2019 Dec 27;9:19908. doi: 10.1038/s41598-019-56465-0

Table 2.

Location (State, latitude (Lat.), and longitude (Long.)), soil characteristics (soil type, pH (1:2.5), available phosphorus (P), and soil organic matter (SOM) at 0–20 cm soil depth), and crop management (variety, maturity group, seeding rate, row spacing, previous crop, and tillage system) in 11 soybean environments (Env.).

Env. Location Soil characteristics Crop management
State§ Lat. Long. Soil type pH P (mg kg−1) SOM (g kg−1) Variety Maturity group Planting date Seeding rate (seeds ha−1) Row spacing (m) Previous crop Tillage system
IN1 IN 40.4965 −86.9995 Typic Endoaquoll 6.4 34.6 34 AG24X7 2 24-May 345,800 0.38 corn conventional
IN2 IN 40.4965 −86.9995 Typic Endoaquoll 6.4 34.6 34 AG34X6 3 24-May 345,800 0.38 corn conventional
IN3 IN 41.4481 −86.9416 Typic Argiaquoll 6.2 31.8 37 AG24X7 2 25-May 345,800 0.38 corn conventional
IN4 IN 41.4481 −86.9416 Typic Argiaquoll 6.2 31.8 37 AG34X6 3 25-May 345,800 0.38 corn conventional
KS1 KS 39.1369 −96.6185 Fluventic Hapludoll 6.1 52.6 22 AG30X8 3 27-Apr 444,600 0.76 soybean conventional
KS2 KS 39.1369 −96.6185 Fluventic Hapludoll 6.1 52.6 22 AG45X6 4 27-Apr 444,600 0.76 soybean conventional
KS3 KS 38.538 −95.2401 Abruptic Argiaquoll 6.1 13.7 40 AG30X8 3 10-May 370,500 0.76 corn no-till
KS4 KS 38.538 −95.2401 Abruptic Argiaquoll 6.1 13.7 40 AG45X6 4 10-May 370,500 0.76 corn no-till
MN MN 44.9942 −93.1731 Typic Hapludoll 6.2 16.4 36 AG14X7 1 11-May 346,000 0.76 corn conventional
SD1 SD 44.3472 −96.7714 Aeric Calciaquoll 6.9 32.3 47 AG24X7 2 18-May 346,000 0.76 corn conventional
SD2 SD 44.3472 −96.7714 Aeric Calciaquoll 6.9 32.3 47 AG11X8 1 18-May 346,000 0.76 corn conventional

§IN, Indiana; KS, Kansas; MN, Minnesota; SD, South Dakota.