Hossein Mirzaei-Takhtgahi; Hooshang Ghamarnia; Milad farmanifard
Abstract
In this research, the effect of vemicompost on yield and yield components of tomato and okra was investigated under irrigation with contaminated water. The experiment included two treatments using vermicompost and control with three replications; and it was conducted at the Campus of Agriculture and ...
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In this research, the effect of vemicompost on yield and yield components of tomato and okra was investigated under irrigation with contaminated water. The experiment included two treatments using vermicompost and control with three replications; and it was conducted at the Campus of Agriculture and Natural Resources of Razi University. Vermicompost was applied at 25 ton per hectare in two stages: 10 t/ha at the crop cultivation period, and 15 t/ha one month after cultivating. The effect of vermicompost growth indexes including plant height, stem diameter, fruit diameter and weight, chlorophyll index, stem and leaf dry matter percentage and yield were investigated. The comparison of the average yield of tomato and okra showed that only fruit weight of tomatoes was statistically significantly different, and there was no statistically significant difference between the two treatments in other characteristics. In tomatoes treated with vermicompost, plant height, stem diameter, chlorophyll index, stem and leaves dry matter percentage were increased by 2.3%, 0.3%, 7.3%, 5.6% and 9.1 percent and fruit diameter, fruit weight and yield were decreased 25.5%, 42.6% and 73.2 percent, respectively compared with the control. Also, in okra under application of vermicompost, plant height, stem diameter, fruit diameter, fruit weight, chlorophyll index and yield were increased by 10.3%, 1.2%, 10.4%, 13.3%, 3% and 35.7%, while stem and leaves dry matter percentages were increased by 5.5% and 11.7%, respectively, compared with the control. Considering the significant reduction in tomato fruit weight and reduction of its fruit diameter and yield, as well as reduction of stem and leaves dry matter in okra, and in light of the high risk of using contaminated water and possible contamination of the fruit and reduction of its quality and health, the use of vermicompost for these crops under irrigation with contaminated water is not recommended. In general, the use of contaminated water is unacceptable for human and animal foods.
Hossein Mirzaei-Takhtgahi; hooshang ghamarnia
Abstract
This study was conducted to investigate accumulation of Cu, Fe, Zn, Cd, and Mn in different vegetables such as spinach (Spinacia oleracea), fenugreek (Trigonella foenum-graceum) and dill (Anethum graveolens) under irrigation with contaminated water of Ghareso River and well water (control), as two treatments. ...
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This study was conducted to investigate accumulation of Cu, Fe, Zn, Cd, and Mn in different vegetables such as spinach (Spinacia oleracea), fenugreek (Trigonella foenum-graceum) and dill (Anethum graveolens) under irrigation with contaminated water of Ghareso River and well water (control), as two treatments. This study was carried out on root and shoot of three vegetables with three replications as split-plot in a randomized complete block design. The results showed that contaminated water significantly increased the concentration of Cu, Fe, Zn, and Mn in spinach (P Mn > Zn > Cu > Cd. Fe had the highest and Cd had the lowest accumulation in plants. The concentration of Cu and Fe in the shoot and root of spinach, fenugreek, and dill was higher than the WHO standard. The contents of Zn and Mn in the shoot and root of spinach, fenugreek, and dill were below the permissible limit of some standards, but more than the other standards. The amount of Cd in the shoot and root of the examined vegetables was higher than the permissible limit of all standards.