Two are the critical factors in the commercial production of ornamental plants: the substrate and the fertilization method, since the "sustainable floriculture" discourages the use of synthetic chemical fertilizers...Two are the critical factors in the commercial production of ornamental plants: the substrate and the fertilization method, since the "sustainable floriculture" discourages the use of synthetic chemical fertilizers and peat-based substrates. The aim of this paper was to test a peat/compost based substrate and a guano + mycorrhizal inoculum fertilizer mixture, in order to obtain a sustainable quality yield of geranium plants. Geranium cuttings (Pelargonium zonale cv. real polaris and Pelargonium grandiflorum cv. lotus) were grown for two months in a glasshouse. Peat, in the growing substrate, was replaced with high quality compost (20% and 40% as reduction percentages). The fertilizer mixture was made up of guano (3 g/L) and mycorrhizal inoculum (7.5 L/m^3). Plants of Pelargonium cv. Real polaris, grown on a substrate made up of peat and 20% of high quality compost, presented the better trade features, so to satisfy the "sustainable floriculture" need.展开更多
The present study reports the physico-chemical properties of four compost based squeezed grape fruit wastes (SGFW) consisting of 60% SGFW + 40% chicken manure (including sawdust) (CMS) (v/v), 80% SGFW + 20% bean hay (...The present study reports the physico-chemical properties of four compost based squeezed grape fruit wastes (SGFW) consisting of 60% SGFW + 40% chicken manure (including sawdust) (CMS) (v/v), 80% SGFW + 20% bean hay (BH) (v/v), 80% SGFW + 20% chicken manure (including wheat hay) (CMH) (v/v) and 100% SGFW. Results showed that 100% SGFW compost had a suitable pH and EC with 7.82 and 1.68 dSm<sup>-1</sup>, respectively. Also, 80% SGFW + 20% BH compost was very rich in organic matter similar to coco peat, but 80%SGFW + 20% CMH compost had the lowest C/N ratio (5.2). The N, P and K concentrations in SGFW composts were higher than the coco peat or vermiculite. The soluble cations (Ca<sup>2+</sup>, Mg<sup>2+</sup>, K<sup>+</sup>) and anions (CO<sup>2</sup><sub>3</sub>, HCO<sup>-</sup><sub>3</sub> ) in 60% SGFW+ 40% CMS compost were the highest among substrates. The concentrations of trace elements and heavy metals in SGFW composts were far lower than the range of phytotoxicity. On the other hand, total phenols in SGFW composts were higher than coco peat.展开更多
文摘Two are the critical factors in the commercial production of ornamental plants: the substrate and the fertilization method, since the "sustainable floriculture" discourages the use of synthetic chemical fertilizers and peat-based substrates. The aim of this paper was to test a peat/compost based substrate and a guano + mycorrhizal inoculum fertilizer mixture, in order to obtain a sustainable quality yield of geranium plants. Geranium cuttings (Pelargonium zonale cv. real polaris and Pelargonium grandiflorum cv. lotus) were grown for two months in a glasshouse. Peat, in the growing substrate, was replaced with high quality compost (20% and 40% as reduction percentages). The fertilizer mixture was made up of guano (3 g/L) and mycorrhizal inoculum (7.5 L/m^3). Plants of Pelargonium cv. Real polaris, grown on a substrate made up of peat and 20% of high quality compost, presented the better trade features, so to satisfy the "sustainable floriculture" need.
文摘The present study reports the physico-chemical properties of four compost based squeezed grape fruit wastes (SGFW) consisting of 60% SGFW + 40% chicken manure (including sawdust) (CMS) (v/v), 80% SGFW + 20% bean hay (BH) (v/v), 80% SGFW + 20% chicken manure (including wheat hay) (CMH) (v/v) and 100% SGFW. Results showed that 100% SGFW compost had a suitable pH and EC with 7.82 and 1.68 dSm<sup>-1</sup>, respectively. Also, 80% SGFW + 20% BH compost was very rich in organic matter similar to coco peat, but 80%SGFW + 20% CMH compost had the lowest C/N ratio (5.2). The N, P and K concentrations in SGFW composts were higher than the coco peat or vermiculite. The soluble cations (Ca<sup>2+</sup>, Mg<sup>2+</sup>, K<sup>+</sup>) and anions (CO<sup>2</sup><sub>3</sub>, HCO<sup>-</sup><sub>3</sub> ) in 60% SGFW+ 40% CMS compost were the highest among substrates. The concentrations of trace elements and heavy metals in SGFW composts were far lower than the range of phytotoxicity. On the other hand, total phenols in SGFW composts were higher than coco peat.