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Articles by A. Aghabarati
Total Records ( 3 ) for A. Aghabarati
  H. Maralian , A. Tobeh , S. Seif Amiri , R. Didar-Talesh Mikail and A. Aghabarati
  This field study was conducted in order to investigate the yield and quality of sugar beet Cv zargan in relation to sowing date and different irrigation regimes during 2005 at Ardabil conditions. The experimental design was a randomized complete block design with factorial arrangement in four replicates. In this experiment two factor with four levels were used: Sowing date (S1 = 5 Apr, S2 = 20 Apr, S3 = 5 May and S4 = 20 May) and irrigation including: I1 = Irrigation at 13.3 FC (30% FC), I2 = Irrigation at 15.5 FC (50% FC), I3 = Irrigation at 17.7 FC (70% FC) and I4 = Irrigation at 19.9 FC (90% FC). The SAS software package was used to analyze all the data and means were separated by the least significant difference (LSD) test at p<0.01. In this study adjectives such as root yield (t ha-1), leaf yield (t ha-1), sugar content (%), Molasses (%), pure sugar content (%), white sugar yield (t ha-1), Na (mmol/100 g root), K (mmol/100 g root) and α-amino N (mmol/100 g root) were evaluated. Sowing date and irrigation had a significant effect on sugar yield and its quality. Potassium concentration was not significantly affected by irrigation treatments. Interaction effects between sowing date and irrigation treatments were significant (p<0.01) for all adjectives. Both early and late sowing decreased beet root and leaf yield. Results of irrigation treatments showed that the optimum soil water content for root yield is 70% of field capacity with 66.5 t ha-1. The minimum root yield (47.36 t ha-1) observed at 90% of field capacity. Sugar content (%) affected by sowing date and irrigation treatments. However irrigation at 30, 50 and 70% of field capacity (I1, I2 and I3) had same effect on sugar content while sugar content decreased at 90% field capacity (I4). Therefore the optimum sowing date in Ardabil condition is 20 April that maximum yield and quality observed on this treatment. When the available soil water content was at 70% of field capacity, maximum root yield observed.
  A. Aghabarati , S.M. Hosseini , A. Esmaili and H. Maralian
  Effect of municipal effluent on survival, growth and mineral nutrient in Olea europaea L. trees were studied. A study was carried out at Tehran (Iran) in which olive trees were irrigated with municipal effluent and well water for a period of 7 years. We analyzed the soil; leaves and fruits of olive trees irrigated with municipal effluent and compared them with olive trees irrigated with well water. Observation included tree height, collar diameter, survival and plant mineral composition, mineral uptake and change in soil properties at 7 years of plant age. Application of municipal effluent produced better growth in Olea europaea L. trees. The trees irrigated with municipal effluent attained 3.26±0.07 m height, 13.35±0.41 cm collar diameter, but trees irrigated with well water attained 2.47±0.12 m height, 9.5±0.64 cm collar diameter at the age of 7 years. Irrigation with municipal effluent increases pH, EC, OM, NH4-N, NO3-N and PO4-P in soil. Concentration of N, P, K, Ca and Mg were greater in leaves and fruits of trees irrigated with municipal effluent than those of the leaves of trees irrigated with well water. Municipal effluent may be useful in tree irrigation to increase biomass productivity. Further, reduction of toxic concentration of metal ions in effluents may be helpful for a long-term field application.
  A. Aghabarati , S.M. Hosseini and H. Maralian
  The concentrations of Zn, Pb, Cr and Ni were measured in the soil, fruits and leaves of Olea europaea L. irrigated with municipal effluent. In this study, site irrigated with municipal effluent and site irrigated with well water for 7 years were sampled for soil and plant chemical analysis to evaluate its long term effect. Samples of irrigation water, soil and leaves and fruits of olive were analyzed for Zn, Pb, Cr and Ni. Heavy metals in municipal effluent were higher than the standard (WHO). Irrigation with municipal effluent increased Zn, Pb, Cr and Ni in soil compared to well water. The mean heavy metal concentrations in topsoil were higher than the standard (FAO) for all heavy metals except Cr. Plant Zn, Pb, Cr and Ni increased with 7 years of wastewater irrigation. The study concludes that the use of municipal effluent for irrigation has increased the contaminated products of Zn, Pb, Cr and Ni in soil and plant, but the contaminated products of Zn, Cr and Ni in fruits were below the permissible limits of the standard except Pb, after 7 years from this practice. Based on these results, it can be concluded that proper management of municipal effluent irrigation and periodic monitoring of soil and plant quality parameters are required to ensure successful, safe, long-term municipal effluent irrigation.
 
 
 
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