Nutritional Compositions, Polyphenolic Profiles, Modulation of Gut Microbiota, Glycemic Index and Some Biological Properties of Pigmented Rice Varieties and Adlay Influenced by Soaking and Germination Conditions

Thesis (Ph.D., Functional Food and Nutrition)--Prince of Songkla University, 201

Poultry Manure Addition Affects Production, Plant Nutritional Status and Heavy Metals Accumulation in Green Amaranth (Amaranthus hybridus)

Poultry manure (PM) application may be critical as source of contaminants and may affect crop quality. Experiments were conducted in 2016 and 2017 cropping seasons to determine effects of PM on performance and quality of green amaranth including some minerals and heavy metals in soil and plant tissues. In both years, PM were applied at 0, 10, 20, 30 and 40 t∙ha- 1 . Application of PM increased soil chemical properties, leaf mineral content, growth and marketable yield of green amaranth compared with the control. Soil pH, organic matter, N and P and leaf mineral N and P were increased up to 40 t ha-1 PM, but soil and leaf K, Ca, Mg, ash, protein, fiber contents were increased up to 20 t ha-1 PM. The lowest fat was observed at 20 t ha-1 PM. Dry matter declined as PM level increased. The PM influenced soil and leaf As, Cu and Zn, the abundance of heavy metals in soil and green amaranth leaf increased as level of PM increased. In soil and green amaranth leaves, levels of As, Cu and Zn as affected by PM did not exceed maximum permissible limits. The best green amaranth quality was obtained at 20 t ha-1 PM and may likely provides a good balance between yield and economic outlay. © 2019 Friends Science Publisher

Synergistic and antagonistic effects of soil applied P and Zn fertilizers on the performance, minerals and heavy metal composition of groundnut

Nutrients use efficiency of plants could be affected by the antagonistic or synergistic effects of two or more elements in the soil leading to decreased or increased yield. Field experiments were conducted in 2017 and 2018 cropping seasons at the Landmark University Teaching and Research farm, Omu-Aran, Nigeria, to determine the interaction between zinc (Zn) and phosphate (P) fertilizers on growth, yield, nutrient elements and some heavy metals composition of groundnut grown on an Alfisol. Treatments consisted of four levels of phosphorus (0, 40, 80 and 120 kg P ha-1) and three levels of zinc (0, 4 and 8 kg Zn ha-1). The experiment was laid out in a Randomized Complete Block Design (RCBD), replicated four times. The following parameters were taken: plant height, plant spread, total biomass, number of pods/plot, weight of pods/plot, number of seeds/plot, weight of seeds/plot. Laboratory analysis of some chemical constituents of groundnut seed was carried out to determine the nutrient and heavy metals composition. Results indicated that application of 8 kg Zn ha-1 and 120 kg P ha-1 had a synergistic effect on the growth parameters and antagonistic effect on the yield, yield parameters, some nutrient elements and beneficial heavy metals. Application of 8 kg Zn and 80 kg P ha-1 is therefore recommended on an Alfisol without necessarily increasing the concentration of non-beneficial heavy metals in groundnut seed

Synergistic and antagonistic effects of soil applied P and Zn fertilizers on the performance, minerals and heavy metal composition of groundnut

Nutrients use efficiency of plants could be affected by the antagonistic or synergistic effects of two or more elements in the soil leading to decreased or increased yield. Field experiments were conducted in 2017 and 2018 cropping seasons at the Landmark University Teaching and Research farm, Omu-Aran, Nigeria, to determine the interaction between zinc (Zn) and phosphate (P) fertilizers on growth, yield, nutrient elements and some heavy metals composition of groundnut grown on an Alfisol. Treatments consisted of four levels of phosphorus (0, 40, 80 and 120 kg P ha-1) and three levels of zinc (0, 4 and 8 kg Zn ha-1). The experiment was laid out in a Randomized Complete Block Design (RCBD), replicated four times. The following parameters were taken: plant height, plant spread, total biomass, number of pods/plot, weight of pods/plot, number of seeds/plot, weight of seeds/plot. Laboratory analysis of some chemical constituents of groundnut seed was carried out to determine the nutrient and heavy metals composition. Results indicated that application of 8 kg Zn ha-1 and 120 kg P ha-1 had a synergistic effect on the growth parameters and antagonistic effect on the yield, yield parameters, some nutrient elements and beneficial heavy metals. Application of 8 kg Zn and 80 kg P ha-1 is therefore recommended on an Alfisol without necessarily increasing the concentration of non-beneficial heavy metals in groundnut seed