A field experiment was conducted on calcareous soil at El-Nubaria AgricultureResearch Station, El -Behera Governorate to study the efficiency of sulfur (mineral fert), compost (organic fert) and phosphoreen (bio fert) with two different sources of phosphorus (rock phosphate and superphosphate) on physiochemical soil properties and yields of wheat as direct and succeeded by maize as residual effect grown on a calcareous soil. To fulfill this objective, two field experiments were conducted on EI-Noubaria calcareous soil during two successive winter (2014 -2015) and summer seasons (2015). The treatments were : A-amendments factor as control, sulfur by rate, 1 ton fed -1 as mineral fertilizer, compost, 10 ton fed -1 as organic fertilizer and phosphoreen seed inoculation with PDB as bio fertlizer and two sources of phosphorus ( control , rock phosphate and superphosphate) . The experimental plots were distributed in a splitplot design. Wheat (Triticum aestivum L, cv. Sakha 93) was cultivated within the first half of November 2014 then harvested in May 2015. The second experiment was conducted to study the residual effect of the aforementioned treatments on maize (Zea maize L, c v. single cross 10) cultivated at the same experimental plots in the second half of May 2015 and harvested at the end of August (2015). The results indicated that: The treatment of sulfur combined with super phosphate treatment has the highest effect in lowering pH values followed by compost treat. Also bio fertilizer showed moderately values. EC values of soil were increased by sulfur application combined with super phosphate treatment wheres, compost caused reductions in the EC values as compared to the control. The highest values of OM were recorded by compost combined with super phosphate treatment over sulfur followed by bio fertilizer. An improvement in soil physical properties as affected by soil amendment was observed. Wherever a slight decreased in soil bulk density (BD), an increase in both soil total porosity (TP) and soil hydraulic conductivity (HC) with using compost (organic fert) than sulfur (mineral fert) followed by phosphoreen (bio fert) were occurred. Compost combined with super phosphate treatment achieved the highest biological, grain yield and 100 grains weight of wheat and maize plant followed by sulfur combined with super phosphate treatment. Compost treatments significantly increased NPK uptake of wheat and maize crop. Also data revealed the superiority of compost treatments over sulfur followed by biofertilizer combined with super phosphate, compared to that treatment combined with rockphosphate. Generally, the different soil properties and crop yield of wheat and maize plant grown on calcareous soil were more affected by compost combined with super phosphate treatment than sulfur followed by bio fertilizer addition compared to rock phosphate treatment.
A field experiment was conducted on calcareous soil at El-Nubaria (private farm at the 10,000 Fed Village), El-Behera Governorate for two successive winter seasons (2015-2016) and (2016-2017) . Broad bean plant ( Vicia faba . Nubaria 1) was used as a tested plant to study the efficiency of some conditioners, compost (town refuse), potassium humate as organic and Rhizobium leguminosarum bv. Viceae strain ICARDA 441 as bio fertilizers on some calcareous soil properties and yield of broad bean. The treatments were: A-The cultivation methods (row and strew). B-The conditioners: organic (compost 10 ton fedP -1 P and potassium humate 15 L fedP -1 P ) and bio (Rhizobium leguminosarum bv. viceae strain ICARDA 441). Results indicated that, EC, pH and CaCOR 3R % of the studied soil were decreased, where OM was increased as a result of using both organic and bio conditioners compared to the control treatment. An improvement in soil physical properties as affected by soil conditioners was observed. Wherever a slight decreased soil bulk density (BD), an increase in total porosity (TP) and soil aggregation as dry and wet stable aggregates at using organic conditioners than biofertilizer were occurred. As well as soil hydraulic conductivity (HC) and moisture content at both field capacity (FC) and available water (AW) were increased compared to the control. Town refuse compost application achieved the highest biological, grain yield and 100 grains weight of broad bean plant followed by potassium humate treatment. Generally, the different soil properties and crop yield of broad bean plant grown on calcareous soil was more affected by the row cultivation method, town refuse compost and potassium humate, than bio fertilizer addition compared to the control.
Two field experiments were carried out on sandy soil at Experimental Farm of Ismailia Agric. Res Station for two successive summer seasons (2015 and 2016) to study the effect of individual and combined application of compost and tafla on some soil chemical, physical properties, sesame (Sesamum indicum L) productivity and its chemical composition. Both tafla and compost were added individually at rates of 0, 5, 10 and 15 ton fed -1 or in together at rates of 2.5, 5 and 7.5 ton fed -1 . The studied treatments arranged in the completely randomized design in three replicates. The obtained results indicated a noticeable reduction in soil pH as a result of treating the soil with tafla and compost at different rates compared to control, increased the soil EC at different rate of tafla , whereas reduction in soil EC in treating of compost or combined with tafla at different rates. The effect is more pronounced in the soil treated with 7.5 ton compost fed -1 + 7.5 ton tafla fed -1 and compost alone at rate of 15 ton fed -1 . However, the organic matter (OM) content of the soil was increased with application of compost alone and in combined with tafla at different rates. The highest OM content were recorded with the treatment of 7.5 ton compost fed -1 + 7.5 ton tafla fed -1 followed by 15 ton fed -1 of compost compared to control. A slight decreases of soil bulk density (BD), an increase in soil total porosity (TP) were found with application of compost and tafla individually and in together at different rates as compared to control. The values of field capacity, wilting point and the content of available water of sandy soil were increased as a result of the evaluated soil amendments at different application rates. In addition, the obtained data indicated that the yield and its components, straw yield, seed yield and weight of 1000 seeds, were significantly increased by the different studied treatments of both compost and tafla. The highest mean values of yield and its components were found with the combined treatments of compost with tafla at a high application rate compared to the control. Also, there was a significant increment in N, P and K contents (%) of sesame seeds with treatment of 7.5 ton compost fed -1 + 7.5 ton tafla fed -1 compared to control.
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