superphosphate has been researched along with potassium-sulfate* in 2 studies
2 other study(ies) available for superphosphate and potassium-sulfate
| Article | Year |
|---|---|
[Effects of formula fertilization to yield and content on polysaccharide of Isatis indigotica].
To select the optimum formula fertilization of Isatis indigotica through analyzing the yield and contents of polysaccharide of Radix Isatis for different treatments.. An orthogonal experiment design on the basis of three factors and four levels was applied for studying the effect of formula fertilization on yield. The contents of polysaccharides were determined with phenol-witriolic colorimetry.. The optimum formula fertilization of Radix Isatis was carbamide 869.0 kg x hm(-2), superphosphate 1 428.6 kg x hm(-2) and potassium sulfate 0 kg x hm(-2).. Superphosphate can observably influence the yields of Radix Inditis. while carbamide influence the contents of polysaccharide of Radix Inditis. Topics: Biomass; Diphosphates; Fertilizers; Isatis; Plant Roots; Plants, Medicinal; Polysaccharides; Sulfates; Urea | 2007 |
Bioactivity of Anagallis arvensis and Calendula micrantha plants, treated with ammonium nitrate, superphosphate and potassium sulphate fertilizers, on Biomphalaria alexandrina.
The survival rate of B. alexandrina snails maintained in aqueous solutions of the two tested plants (Calendula micrantha and Anagallis arvensis) decreased gradually with time until the 9th week and 10th week where the survival rate was zero in the high concentration of A. arvensis and C. micrantha, respectively, meanwhile, the survival rate of the control was 20%. Also, the two plants caused reduction in hatchability of snails egg masses. Thus, the percent of hatching in A. arvensis (82 ppm) was 46% and in C. micrantha was 72% compared with control (97.29%). Both plants reduced the infection rate of Biomphalaria alexandrina snails with Schistosoma mansoni miracidia to 41.17% and 61.9%, respectively, compared with control (90%). C. micrantha caused much higher reduction in snail infection rate than A. arvensis. The prepatent period was significantly prolonged in snails maintained at higher concentration of both plants. The cercarial output (expressed as mean number/snail) revealed that, A. arevensis caused a significant reduction in cercarial production than control. While, high concentration (120 ppm) of C. micrantha caused a significant elevation in the mean number of cercariae/snail. However, the total number of cercariae produced by all snails in each group showed a reverse relation with the tested concentrations in both plants. Topics: Animals; Asteraceae; Biomphalaria; Diphosphates; Fertilizers; Magnoliopsida; Molluscacides; Nitrates; Schistosomiasis; Sulfates | 2000 |