A filed experiment was carried out to study the effect of addition pressmud (PM) as organic wastesunder saline irrigation water on some soilproperties, Tuta Absuluta Damage and plant growth. PM was applied at rates of 0, 5 and 10 ton/fed. The soil was cultivated with tomato (Genotype: Alissa) under salinity irrigation whichapplied having 0, 25 and 50 mM NaCl.Untreated soil was used as a control (CTRL). At the end of the experiment, soil samples and plants were taken from each treatment. The results showed that the application of PM significantly decreased the soil bulk density, soil pH, while, under saline irrigation water increased them compared with PM. On the other hand, PM increased each of ECe, cations such as Ca +2 + Mg +2 , Na + and K + while these parameters were increased with increasing salinity levels compared with CTRL. In addition, data showed also that the parametersplant growth were significantly positively affected by the application of PM addition rates compared with control or salinity stress. Na + was accumulated into plant tissues with increasing level NaCl. The Ca 2+ + Mg 2+ and K + contents reduced under saline irrigation water compared as control or PM addition rates. On the other hand, plants growing under 10 ton/fed of PM and freshwater had lower number of miners/leaf and infested fruits/plant compared with plants growing under 5 ton/fed of PM or control treatment. High level of salinity had a good effect on T. absluta damage than control treatment. These results support the hypothesis that plants growing under a good level of organic fertilizer and salt-stress are better defended againstT. absluta.
Metal pollution in coastal areas is one of the focused environmental concerns. Sediment quality in the coastal zone reflects the long-term environmental status because it keeps a record of the development in the area. Quality indicators for metals in surface sediments were evaluated at 18 points of sediment sampling sites of these three bays using the Enrichment factor (EF) and the geo accumulation index (Igeo). Research locations in the coastal areas of Sangihe Island, Talengan Bay, Manalu, and Dagho Bay have values below the metal concentration at the background value. The Igeo category at the three research sites can generally be divided into two criteria, namely: Background concentration and unpolluted. For the types of Cr and Mg metals that are categorized as experiencing enrichment Minimum enrichment (Less), with an EF value <2, Moderate enrichment (Moderate), with a value of 2≤EF <5, and Enough enrichment (significant), with a value of 5≤EF <20. Whereas Co metal experiences enrichment of Very High enrichment (Very High), with a value of 20≤ EF < 40, and Extremely High (extremely high), with an EF value of ≥40, but still has an igeo value <1 which indicates that the metal Co is still in the category of no pollution.
This study was conducted on a private farm located at Southeast of Sohag Governorate, during two successive seasons of 2017/2018 and 2018/2019. Experiment were carried out to examine the capability of two varieties different kinds, Relatively Salt-tolerant, sorghum variety (Gia113) and. relatively Salt-sensitive, sorghum variety (Dorado) as a summer crop in the studied soil under stress condition. application different amelioration techniques with organic amendments,(mixture1and mixture 2) as well as Bio-organic treatments (soil, foliar spray and soil + foliar application) Results showed that increased fresh, dry weight and water content of both shoot and root, as well as increased plant length of shoot. Results also showed that different amelioration techniques with organic amendment under two varieties differed in salt tolerant, at 60th) as expected, associated with a marked improvement in the Na content and Na uptake status for both shoots and roots. Comparing the studied three methods of bioorganic amelioration (s, f and s + f) showed that application (s + f) significant effect application together, compared with the other with respect to varietal responses to salinity, reported that tolerant plants were associated with greater net transport of Na+ from roots to shoots.
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