Evaluation of Soil Quality in a Composite Pecan Orchard Agroforestry System Based on the Smallest Data Set

Agroforestry not only takes into account the use of land for forestry and agriculture but can also improve efficacy utilized above- belowground resources, which have always garnered widespread attention. The objective this study is to evaluate quality pecan orchard soil following implementation agroforestry. Consequently, 15 indices were selected a principal component analysis (PCA), was then combined with norm value each index correlation coefficients between establish minimum data set (MDS). A comprehensive model used calculate (SQI) total (TDS) MDS (SQI-TDS SQI-MDS, respectively), linear regression two performed. results revealed that evaluation fertility included pH, electrical conductivity (EC), bulk density (BD), available potassium (AK), nitrogen (TN), magnesium (Mg), screening filtering rates attained 60%. Soil Quality Index (SQI-MDS) four planting patterns, sorted from largest smallest, were: PPS (0.573) > PPH (0.519) PPL (0.355) CK (0.315). BD AK main factors affected hickory soils. agroforestry composite system improved availability nutrients quality. Thus, promotion understory intercropping appropriate increases in fertilizers plantations are recommended.