چکیده:
Two laboratory and greenhouse experiments were carried out to compare and evaluate the nutrition of Phaseolus vulgaris L. plant with foliar spray and root media. In laboratory, effect of four treatments; N- nutrition solution; Urban solid waste leachate (USWL); vermi-compost extract and control (distilled water) on germination and seeding growth of Phaseolus vulgaris L. was examined for 10 days in incubation at 20°C. In greenhouse, in addition to four treatments mentioned earlier, vermi-compost paste (after extraction) + sand (1:1 ratio) was included as fifth treatment. Foliar spray of all treatments except the fifth treatment was performed at plant two leaf stage daily for one month. The results showed that foliar spray with organic compounds of low concentrations had a positive effect on vegetative growth and plant weight. In these treatments leaves were thicker, more succulent and dark green in color, probably due to higher photosynthetic activity of plant. Foliar spray with organic compounds increases the droplet persistence on leaf surface and hence more absorption of plant nutrient elements.
خلاصه ماشینی:
"Comparison of urban solid waste leachate and vermi-compost as foliar spray and root media on nutritional performance of Phaseolus vulgaris L.
In laboratory, effect of four treatments; N- nutrition solution; Urban solid waste leachate (USWL); vermi-compost extract and control (distilled water) on germination and seeding growth of Phaseolus vulgaris L.
But urban waste water or municipal solid waste compost leachate or extracts contain relatively larger amounts of organic matter, plant nutrients and soluble salts compared to MSW compost and the addition of these materials to soil, unlike compost materials, especially in calcareous soils have a pronounced effect on soil nutrition and plant growth.
Plumule weight to radicle weight ratio in vermi-compost extract, urban solid waste leachate and N- nutrition solution ranked as first, second and third with no significant differences compared to each other (Table 2).
all in all, vermi- compost extract proved to be superior in plumule weight, but was on a par with urban solid waste leachate and N- nutrition solution with respect to radicle weight and plumule weight to radicle weight ratio of plant.
Highest internode's length was noted in USWL and vermi-compost extract treatments with an increase of 45 and 32 percent respectively, compared to the control.
Positive impacts of urban solid waste leachate and vermi-compost extract treatments demonstrated their effectiveness in plant growth as an immediate remedy, the most and proper means in plant recovery and improvement in sustainable organic agriculture and safe guarding soil, water and environment."