The effect fertilizer on the growth of lowbush blueberry (Vaccinium angustifolium Ait.) in mineral soil
2001
Starast, M. | Karp, K. | Zimmer, K. | Tasa, T. (Estonian Agricultural Univ., Tartu (Estonia).Dept. of Horticulture)
Bluberries have very specific soil requirements, they do best where the pH is between 4.5 and 5.5. 2-year old seedlings were planted in soil with the addition of peat (12 l per plant). The soil was sampled before planting and at the end of the vegetation period of next year. In one study 100 g/m (2) of elemental sulfur (S) was applied (in Saaremaa, Kaerla). In another study (in Tartu Country, Vasula) 5 variants were used: 1) without sulfur and fertilizer (control); 2) ammonium sulfate + potassium sulfate + superphosphate; 3) sulfur; 4) sulfur + complete fertilizer; 5) sulfur + ammonium sulfate + potassium sulfate + superphosphate. One year after the application of sulfur and acid-forming fertilizers, sampling indicated no decrease in the soil pH. The weakest growth of plants was observed on control plots. Seedlings were estimated by measuring the average height, width and number of shoots. All variants had significantly higher height and width compared with non treated variants. The number of shoots was higher, but not significantly
显示更多 [+] 显示较少 [-]