No abstract

and 2020 years, 2 field experiments were done to study the effect of sprinkle treatments (without, sprinkle with NPK, Zn + Mn + Fe, seaweed extract and combination of NPK + "Zn + Mn + Fe" and seaweed extract) on development, yield and its ingredient and chemical constituents of three maize hybrids (TWC 368, SC 162 and SC168). Every trial was brought in a strip-plot design with 4 duplications. The results appeared that SC 168 hybrid exceeded other researched hybrids (TWC 368 and SC 162) in all studied characters, except plant height and stover yield fed -1 in jointly seasons. Foliar sprinkle maize plants 3 periods with combination of Fert-plus powder at 4 g liter -1 + Zn, Mn and Fe at 3.0 g of each liter -1 + seaweed extract (SWE) at 1.0 g liter -1 water, which topped further foliar sprinkle treatments and formed the highest growth characteristics, yields and its attributes, chemical constituents and uptakes in jointly seasons. It could be decided that sprayed maize SC 168 or SC 162 hybrids with combination of Fert-plus fertilizer at 4 g + micro-elements (Zn, Mn and Fe) at 3.0 g + seaweed extract at 1.0 g liter -1 water in each sprinkle in order to maximize productivity, NPK contents and uptakes underneath the ecological situations of Dakahlia Governorate, Egypt.

Two field experiments were conducted at the Experimental Research Station in El-Serw, Agricultural Research Center during 2010/2011 and 2011/2012 seasons to study the effect of nitrogen and compost combination treatments and potassium fertilizer levels on growth, yield and its components as well as grain quality of some wheat cultivars. The experiments were carried out in a strip-split plot design with three replicates. The vertical plots were assigned to wheat cultivars (Sakha 93, Gemmiza 9 and Gemmiza 10). The Horizontal plots were devoted to nitrogen and compost combination treatments as follows: 1) 100 % mineral nitrogen (90 kg/fed). 2) 75 % mineral nitrogen (67.5 kg/fed) + 25 % organic nitrogen "compost" (22.5 kg/fed). 3) 50 % mineral nitrogen (45.0 kg/fed) + 50 % organic nitrogen "compost" (45.0 kg/fed). 4) 25 % mineral nitrogen (22.5 kg/fed) + 75 % organic nitrogen "compost" (67.5 kg/fed). 5) 100 % organic nitrogen "compost" (90 kg/fed). While, the subplots were allocated to potassium fertilizer levels (0 and 48 kg K2O/fed). Results showed that Gemmiza 10 cultivar surpassed other studied cultivars in number of days to heading, flag leaf area, plant height, number of spikes/m 2 , number of spikelets/spike, number of grains/spike, grains weight/spike, grain and straw yields/fed, potassium content in grains in both seasons. However, Gemmiza 9 cultivar produced the longest spikes and the highest values of protein percentage in grains in both seasons. Whereas, Sakha 93 cultivar recorded the highest values of 1000grain weight at the same time the lowest values of other studied characters in both seasons. Application of 100 % mineral nitrogen fertilizer alone produced the highest values of all studied characters. Application of 75 % mineral nitrogen (67.5 kg/fed) + 25 % organic nitrogen "compost" (22.5 kg/fed) came in the second rank after application of 100 % mineral nitrogen alone without significant differences between them in some studied characters in both seasons. All studied characters of wheat plants gradually increased as a result of increasing potassium fertilizer levels from 0 to 48 kg K2O/fed in both seasons. Generally, maximum means of all studied characters were produced from fertilizing wheat plants with 48 kg K2O/fed in both seasons. It could be recommended that fertilizing Gemmiza 10 cultivar plants with mineral nitrogen (67.5 kg N/fed) + compost (22.5 kg N/fed) + 48 kg K2O/fed to enhance wheat productivity and also to reduce sources of environmental pollution and maintain human health.

Two field experiments were conducted on saline clay soil in a split-split-plot design with four replicates. The main plots were arranged to study the effect of phosphoric acid applied with irrigation water ( without, 6 L ha -1 and 12 L ha -1 ) where subplots were occupied to with or without the zinc spray Zn (at 13% chelated on EDTA), While the sub-subplots were occupied to anti-stress foliar which included Salicylic acid SA (foliar spraying of 0.01 mM), foliar spraying of calcium (at 10% chelated on EDTA) and Salicylic acid with calcium (foliar spraying of 0.01mM with foliar spraying of calcium at 10% chelated on EDTA). Where the interaction between these treatments showed that using phosphoric acid (12 L ha -1 ) acid with zinc spray (at 13% chelated on EDTA) and spraying both salicylic acid (0.01 mM) and calcium (at 10% chelated on EDTA) together showed an effective effect on increasing growth, the yield of grains, oil content and salinity tolerance by reducing the concentration of sodium and chloride in the sunflower plant.