Bài báo khoa học

We conducted study in orange farming area of the central Nghe An province, Vietnam to understand effect of chemical Characteristics of soil conditions on orange productivity. I collected soil samples from 102 sites in three high orange yielding districts (Quy Hop, Nghia Dan and Con Cuong) to analyze 16 chemical factors including pH, macronutrients, some micronutrients and beneficial nutrients. Dataset with 16 factors got by chemical analysis was examined with Principal Component Analysis (PCA) to extract combination of chemical factors characterizing soils in the study area