@article { author = {}, title = {Evaluation of N, P and K Status of Wheat Using the Diagnosis and Recommendation Integrated System (DRIS) and the Physiological Diagnosis Chart}, journal = {Egyptian Journal of Soil Science}, volume = {55}, number = {3}, pages = {231-250}, year = {2015}, publisher = {The National Information and Documentation Centre (NIDOC) affiliated to Academy of Scientific Research and Technology(ASRT)}, issn = {0302-6701}, eissn = {2357-0369}, doi = {10.21608/ejss.2015.614}, abstract = {DIAGNOSIS and Recommendation Integrated System (DRIS) is a unique approach and a comprehensive system which identifies the nutritional factors mostly limiting crop production and improving fertilizer recommendations for obtaining high crop yields. The DRIS system depends on the principle of nutrient interrelationships in determining the order of the most limiting nutrients, as well as assessing the nutritional balance in plant. The current investigation aims at (i) Developing a database from which DRIS norms and indices of wheat grown on soils of Kalubia Governorate , Egypt, could be established and (ii) Defining the order of N, P and K requirements for plant using this method.To achieve these objectives, 1000 samples of wheat plants grown on soils of the seven Kalubia’s counties were collected at shooting stage. The fresh and dry weights were recorded and samples were finely-ground and wet- ashed for N, P and K determinations. Grain yield of each field was also measured ( using 1.0 m2 plots). The 1000 observations were divided into high-yielding population (591 observations ; >2.4 Mg grains / fed., Mg = 106 g ) and low-yielding populations (409 observations). DRIS norms were calculated for the high-yielding population because the high yield usually results from balanced nutrients in plant. DRIS norms of n/p, n/k and k/p were calculated [being Σ(N/P)/n, Σ(N/K)/n, and Σ(K/P)/n, respectively; where N, P and K are percentages of the respective nutrients in plant, and n = the number of observations].Calculated DRIS norms were 13.93, 1.40 and 10.25 for n/p, n/k and k/p, respectively and were almost comparable with those obtained by other researchers for wheat in other countries.The N, P and K nutritional balance of wheat plants grown in Kalubia “semiarid region” tested by the DRIS approach show that nitrogen was the most limiting nutrient indicating high increasing requirements for high-yielding populations followed, by phosphorus. A high demand of P by these populations was proven as it came in the first and second order of limitation. Both nitrogen and phosphorus should be adequately covered through a sound fertilization program. Thus, establishing DRIS norms for wheat is of a vital importance towards obtaining high yields. The DRIS norms could be used to test the nutritional balance of nutrients in plant and diagnose nutrient requirements through calculating DRIS indices or direct application of a proposed standard physiological diagnosis (PD) chart to the low-yielding populations. Research should be directed towards establishment of database from which DRIS norms for each of the most important strategic crops could be developed to assess the elements of obtaining high crop yield production.The Diagnosis and Recommendation Integrated System}, keywords = {}, url = {https://ejss.journals.ekb.eg/article_614.html}, eprint = {https://ejss.journals.ekb.eg/article_614_dc9ef6a59290569e2bfe7caf660cdebc.pdf} } @article { author = {}, title = {Application of Remotely Sensed Indices to Monitor and Detect the Changes of Land Cover: A Case Study of Abis Area, West Delta, Egypt}, journal = {Egyptian Journal of Soil Science}, volume = {55}, number = {3}, pages = {251-268}, year = {2015}, publisher = {The National Information and Documentation Centre (NIDOC) affiliated to Academy of Scientific Research and Technology(ASRT)}, issn = {0302-6701}, eissn = {2357-0369}, doi = {10.21608/ejss.2015.634}, abstract = {          PERIODIC and precise change detection of Earth's surface ……..features is extremely important for understanding relationships and interactions between human and natural phenomena in order to promote better decision making. Land cover changes are of high importance for investigating the processes and patterns of landscape changes over time and the impact of these changes on sustainable development. These changes can be identified by exploiting multitemporal remote sensing images. Abis is an agricultural area having about 40,000 fed. that have been reclaimed in 1960 in two phases, the first phase was estimated at about 32,000 fed. adjacent to El Behira Governorate, then 8,000 fed. in Alexandria Governorate has been reclaimed at the beginning of the twentieth century. Three satellite images have been used in this study, TM 1984, Landsat ETM+7 2005 and ETM+8 2013 to study the land cover changes and their impact on agricultural land in Abis area, West Nile Delta, Egypt. New remote sensing indices were used to study changes of land cover namely NDVI, MNDWI, SAVI, and IBI. The bare soil and urban areas decreased from 5613 fed. in 1984 to 3117 fed. in 2005 due to it’s the date of the second phase of reclaimed area. The bare soil and urban area increased from 3117 fed in 2005 on the other hand to 8264 fed in 2013. This means that more than 20% of the study area transformed from agricultural land to bare soil and urban area at 8 years, this means that we have lost some of the good and productive agricultural land in the period between 2005 and 2013. It is likely that most of this agricultural land will disappear if the continued encroachment on agricultural land remains the same.  }, keywords = {Change Detection,urbanization,Land cover,GIS,NDVI,NDBI,SAVI,and IBI}, url = {https://ejss.journals.ekb.eg/article_634.html}, eprint = {https://ejss.journals.ekb.eg/article_634_9885c2c79738bda1b254134fd95c8e1e.pdf} } @article { author = {}, title = {Seed and Oil Productivity upon Foliar Spray of Soybean (glycine max l.) with Humic and Ascorbic Acids with or without Seed Irradiation}, journal = {Egyptian Journal of Soil Science}, volume = {55}, number = {3}, pages = {269-285}, year = {2015}, publisher = {The National Information and Documentation Centre (NIDOC) affiliated to Academy of Scientific Research and Technology(ASRT)}, issn = {0302-6701}, eissn = {2357-0369}, doi = {10.21608/ejss.2015.635}, abstract = {THE STUDY evaluates the beneficial effects of soybean foliar ……..spray with humic acid (HA) and ascorbic acid (AA) antioxidants at 2000 mg L-1 HA and 300 and 600 mg L.-1 AA; and seed irradiation of 15 and 30Gy gamma rays. The split-plot experiment was conducted on a sandy soil in Ismailia Governorate, Egypt, during 2010 summer season. Main plots were for foliar spray treatments of: none, HA, AA1, AA2," HA+AA1"," HA+AA2"; AA1 and AA2, i.e. 300 and 600 mg L-1. Sub-plots were for irradiation of, none, 15Gy and 30Gy. 100-seed weight, straw and pod yields as well as protein, N, P, K and oil contents; protein and oil yields and N, P and K uptake increased by 15Gy than by 30Gy. Main effect of spray shows a general descending order of "HA+AA2" > "HA+AA1" > HA > AA2 > AA1. Highest straw yield (5.82 Mg ha–1) was by HA+AA1+15Gy. Highest seed yield (2.99 Mg ha–1) was by HA+AA2+30Gy. Highest uptake of P (23.2 kg ha–1) and K (206 kg ha–1), respectively at straw were achieved owing to the addition of HA+AA1+15Gy gamma ray while treatment of HA+AA2 with 15Gy gamma ray gave highest N-uptake (163 kg ha–1). Highest N, P and K uptake in seeds (149, 19.1 and 49.0 kg ha–1, respectively) were by (HA+AA2+15Gy gamma ray dose). The treatment of HA+AA2 with 15Gy gamma ray was superior to the other treatments.              }, keywords = {sandy soil,Soybean,Humic and ascorbic acid,Seed irradiation with gamma ray}, url = {https://ejss.journals.ekb.eg/article_635.html}, eprint = {https://ejss.journals.ekb.eg/article_635_7965f20bfc27ba406ebfa36e42973a10.pdf} } @article { author = {}, title = {Assessment of Water Quality of Wastewaters of Bahr El-Baqar, Bilbies and El-Qalyubia Drains in East Delta, Egypt for Irrigation Purposes}, journal = {Egyptian Journal of Soil Science}, volume = {55}, number = {3}, pages = {287-302}, year = {2015}, publisher = {The National Information and Documentation Centre (NIDOC) affiliated to Academy of Scientific Research and Technology(ASRT)}, issn = {0302-6701}, eissn = {2357-0369}, doi = {10.21608/ejss.2015.897}, abstract = {  SAMPLES of agricultural drainage water were collected monthly from the drains of Bahr El-Baqar, Bilbies and El-Qalyubia, East Delta, Egypt for one year from October 2013 to September 2014 to evaluate water quality and suitability for irrigation purpose. According to the USDA water was classified as class high salinity low sodicity (C3S1) which cannot be used on soils with restricted drainage. With adequate drainage and special management for salinity control and plants with good tolerance to salinity, the water could be used for irrigation. According to Gupta classification, water of Bahr El-Baqar drain is classified as low salinity with no sodicity (C2S0) while water of Bilbies and El-Qalyubia drains is classified as normal water with non-sodic (C1S0) and can be used for irrigation to most crops on most soils. Water of the three drains are suitable for most crops except the salinity sensitive ones and can be used to irrigate all soils except the very heavy textured, with impeded drainage. These waters do not have any problems regarding sodicity.    }, keywords = {Keyword : Bahr El-Baqar,Bilbies,El-Qalyubia,drains,water quality,Egypt}, url = {https://ejss.journals.ekb.eg/article_897.html}, eprint = {https://ejss.journals.ekb.eg/article_897_83540a59a4a33cb0cd877d74cf006217.pdf} } @article { author = {}, title = {Mutual Effect among Some Organic Substances and Micronutrients on Maize (Zea mays l.) Grown on Sandy Soil}, journal = {Egyptian Journal of Soil Science}, volume = {55}, number = {3}, pages = {303-317}, year = {2015}, publisher = {The National Information and Documentation Centre (NIDOC) affiliated to Academy of Scientific Research and Technology(ASRT)}, issn = {0302-6701}, eissn = {2357-0369}, doi = {10.21608/ejss.2015.896}, abstract = {            TWO FIELD experiments were conducted at a farm in Ismailia  ……..Governorate, Egypt during two successive summer seasons of 2011 and 2012. The response of maize grains (Triple hybride 310) grown on a sandy loam soil to different organic amendments, i.e., compost (CO) and humic acid (HA) at different rates and foliar spraying with micronutrients (mixture of Fe, Mn and Zn) on growth characters, productivity and nutrients in plant were assessed. The obtained results reveal CO and HA enhanced the growth and yield productivity of maize as well as nutrient contents and uptake. CO effectively augmented these parameters in comparison with HA application. Foliar spray with micronutrients in combination with CO or HA substantially elevated these parameters. N, P, K, Fe, Mn and Zn uptake by grains; significantly increased by application of the treatments. The highest response of maize productivity and nutrients uptake by grains were achieved by application of CO in combination with foliar spray of micronutrients followed by HA + foliar spray of micronutrients for the two growing seasons. Highest values of protein content and protein yield (205 g kg-1 and 1114 kg ha-1), respectively were at the first season and (218 g kg-1 and 1185 kg ha-1) at the second one were obtained due to the application of HA at the rate of 36 kg ha-1 + foliar spray with micronutrients.  }, keywords = {foliar spray,compost,Humic acid,Micronutrients (Fe,Mn and Zn),Maize,Sand soil}, url = {https://ejss.journals.ekb.eg/article_896.html}, eprint = {https://ejss.journals.ekb.eg/article_896_91da23f6a6e40d7bba8f6fa341786df5.pdf} } @article { author = {}, title = {Heavy Metals Uptake by Several Crops Grown in Soils Irrigated with Sewage Wastewater in Assiut: Case Study}, journal = {Egyptian Journal of Soil Science}, volume = {55}, number = {3}, pages = {319-330}, year = {2015}, publisher = {The National Information and Documentation Centre (NIDOC) affiliated to Academy of Scientific Research and Technology(ASRT)}, issn = {0302-6701}, eissn = {2357-0369}, doi = {10.21608/ejss.2015.898}, abstract = {EXCESSIVE accumulation of heavy metals in agricultural soils may not only result in environmental contamination, but leads to elevated heavy metal uptake by plants which may affect food quality and safety. The research work here studied heavy metal concentrations in wheat, corn, sorghum, bean, clover, onion, garlic and squash plants, which were irrigated with untreated sewage water in El-Madabegh and five other villages near Assiut City. The plants were analyzed for the content of Fe, Mn, Zn, Cu, Cd, Ni and Pb.   Cadmium, Zn, Cu, Ni and Pb concentrations in all studied soils and plants were relatively high due to irrigation with sewage wastewater compared to those irrigated with underground water.   This study highlights the potential hazard for the health of humans and animals due to uptake of high concentrations of heavy metals, especially Cd, Ni and Pb, by several crops.  }, keywords = {}, url = {https://ejss.journals.ekb.eg/article_898.html}, eprint = {https://ejss.journals.ekb.eg/article_898_1f98a55268d862a02b42205bd13919c7.pdf} } @article { author = {}, title = {Mitigation Effect of K-Humate on N, P and K Phytoavailability in Three Different Egyptian Soils under Salinity Stress}, journal = {Egyptian Journal of Soil Science}, volume = {55}, number = {3}, pages = {331-345}, year = {2015}, publisher = {The National Information and Documentation Centre (NIDOC) affiliated to Academy of Scientific Research and Technology(ASRT)}, issn = {0302-6701}, eissn = {2357-0369}, doi = {10.21608/ejss.2015.899}, abstract = {    SOIL salinity has several adverse effects on phytoavailability of …...nutrients and plant growth in arid and semi-arid regions. This study investigated the mitigation effect of K-Humate application on the phytoavailability of N, P and K nutrients in three different Egyptian soils; from Kafr El-Sheikh, West Nubaria and South Al-Tahrir under salinity stress condition using Amberlite IRN-150 resin capsules. Representative surface soil samples (0-15 cm) were artificially salinized through equilibrium with four electrolytic solutions having four salinity levels (0, 5, 20 and 40 me/l, SAR= 7) prepared using mixtures of Na2SO4 and CaCl2 salts (S1, S2, S3 and S4, respectively). Soils were then treated with 0, 1, 2 and 3g K-Humate/kg soil under each salinity level. Pots were subjected to drying/rewetting cycles for a period of 60 days then resin capsules were inserted into the soil, incubated for 14 days at soil water FC and phytoavailability of N, P and K were measured (RAQ, g/cm2). Results showed that increasing soil salinity had significantly adverse effects on N-RAQs and P-RAQs. Application of K-Humate significantly increased N-RAQs and P-RAQs up to the rate of 2 g K-Humate/kg soil under each salinity level in the three tested soils. The highest percent increase in N-RAQs and P-AQs were found to be at the highest salinity level S4. While K-RAQs was not significantly affected by increasing soil salinity, it was significantly increased by increasing K-Humate application rate. Further field research is required in diverse plant environments to assess economical feasibility of K-Humate and comparison with other manures and organic fertilizers.}, keywords = {N/P/K phytoavailability,K-humate,Soil salinity,Resin capsules,Egyptian soils}, url = {https://ejss.journals.ekb.eg/article_899.html}, eprint = {https://ejss.journals.ekb.eg/article_899_4b57cb84a9a049e37009eef0c16c14d7.pdf} }