Soil carbon dioxide and mineral accumulation in citrus seedlings (Citrus sinensis var. Bessie)

Abstract

SUMMARYThis experiment was conducted in a greenhouse to study the influence of soil CO2 differential treatments on plant response, concentrations of nutrients in soils and plants, and total nutrients per plant (Citrus sinensis var. Bessie).Higher levels of soil CO2, applied to the roots, significantly increased the amount of dry weight per seedling, the height of seedling, and decreased the concentrations of N, P, Ca, Mg, and Mn in the tops. The dry weight of roots supplied with high soil CO2 was decreased, while the concentrations of Mg and Mn were increased. Concentrations of N, P, K, and B in the roots were also reduced due to high level of soil COs. Only total K and Mg per plant were increased with an increased soil COs supply. No significant interactions were found between the soil COs treatments and years of experiment.

Plant response to irrigation with water enriched with carbon dioxide

“…A mixed reaction was reported by Labanauskas et al (1971). Tbey found tbat elevated soil COj concentration increased total K and Mg per plant, wbile N, P, K and B in roots and N, P, Ca, Mg and Mn in tbe tops were reduced.…”

Absorption of 14CO2 by Potato Roots and its Subsequent Translocation1

“…Although monoecious strains of cucurbits vary in their response to different growth regulators according to species and variety, ethylene (or ethylene-releasing compounds), almost always pro mote femaleness. The ethylene-releasing compound, ethephon, is particularly effective in promoting the gynoecious condition in monoecious muskmelon (Cucumis melo L.) (8), cucumber {Cucumis sativus L.) (7,14), and squash (Cucurbita sp.) (19,22), and this effect has been exploited for commercial production of F, hybrid seed without hand pollination.…”

“…Uptake of carbon dioxide has also been reported by others (6, 7). High levels of carbon dioxide applied to the root systems of citrus seedlings significantly increased the total dry matter content (8). In potato plants, C 0 2 enrichment of the root zone increased dry matter content, enhanced tuberization (1), stimulated photosynthetic rates while suppressing photorespiratory rates (unpublished data), and altered the hormone bal ances (2).…”

Bell pepper yield response to carbonated irrigation water1

“…Root absorption of CO 2 has been measured in potato, tomato, eggplant, rice, peas, beans, oats, corn, wheat, and citrus (Bialczyk et al, 1994;Schafer, 1988;Yurgalevitch and Janes, 1988;Baron and Gorske, 1986;Higuchi et al, 1984;Poovaiah, 1982a and1982b;Arteca et al, 1979;Labanauskas et al, 1971). Once absorbed, CO 2 is dissolved in the xylem sap or fixed as an organic acid and transported to the plant leaves where it is used as a carbon source in photosynthesis or as an energy source for other plant reactions (Arteca and Poovaiah, 1982a).…”