Two field experiments were conducted during 2010/2011 and 2011/2012 winter growing seasons in the Experimental Farm of Faculty of Agriculture, Cairo University at Giza, Egypt. The aim of this investigation was to study the response of two wheat cultivars via, Sakha 69 and Gemmiza 10 to five fertilizer treatments (1) 100% NPK recommended dose, as a contro (2) 50% NPK + microbin, (3) 50% NPK + phosphorin, (4) 50% NPK + potassiomage, (5) 50% NPK + microbin + phosphorin + potassiomage .The recommended quantities of NPK fertilizer (R. Q. F.) which are ( 75 kg N/fed, 100 kg P2O5/fed and 24 kg K2O/fed). Data obtained clearly revealed that:Varieties and bio chemical fertilizers had a significant effect on most of traits under study where Gemmiza 10 variety was superior in plant height, weight of 1000grain, No. of tillers/m 2 , spike length, grains weight/spike, No. of grains/spike in both seasons and No. of spike/m 2 and weight of spike (first season). Use of 50 % NKP + microbin + phosphorin + potassiomage was superior in plant height, 1000-grain weight, No. of tillers/m 2 , spike length, No. of grains/spike, weight of grains/spike, No. of spikes/m 2 , biological and grain yields /fed in both seasons and harvest index in only the first season.The interaction between varieties and fertilizer treatments significantly affected most of characters. Gemmiza 10 with 50 % NPK + microbin + phosphorin potassiomage + was superior in plant height, spike length, No. of spikes/m 2 , No. of grains/spike and No. of tillers/m 2 . Use of 50 % NPK + potassiomage with Sakha 69 or Gemmaiza 10 gave the highest average of harvest index while use of 100 % NPK with Sakha 69 or Gemmiza 10 gave the highest in straw yield (first season). Use of 50 % NPK + microbin + phosphorin + potassiomage with Gemmiza 10 gave the highest averages of grain yield and biological yield/fed. The shoot and wheat grain contents from mainly N,P and K as well as total sugars, total free amino acids,proteins and total indols were also increased due to this mineral and biofertilization treatments in both wheat cultivars.

Developing cotton cultivars with a high yielding potential, nutrients extract and efficient, fiber attributes, earliness, high oil as well as protein cottonseed contents and pest resistance across variable environments is of great importance of cotton breeding programmer in Egypt. The field experiments were carried out at Agric. Res. and Exp. Stat., Fac. Agric., Cairo Univ., Giza, Egypt during 2017 season and repeated in 2018 season to evaluate the productivity and fiber technology response of three new released Egyptian cotton cultivars namely; Giza 93, Giza 94 and Giza 95 to three nitrogen fertilizer sources i.e. urea (U -46.5%N), ammonium nitrate (AN-33.5%N) and ammonium sulfate (AS -20.5%N). The randomized complete block design with split-plot arrangement with three replications was used. The main plots were devoted to cotton cultivars and the nitrogen fertilizer sources was randomly distributed in sub-plots. Giza 93 cultivar had the superiority over other cultivars concerning growth attributes, yield and yield components, chemical and biochemical constituents of foliage and seeds of cotton as well as fiber technology parameters. Generally, nitrogen fertilizer sources had a significant effect on growth attributes, yield as well as its components, fiber technological parameters, chemical and biochemical constituents of foliage and seeds of cotton whereas, ammonium sulfate was superior in plant height, 1 st sympodial node, no. sympodial branches plant -1 , no. total bolls plant -1 , boll weight, seed index, lint %, seed cotton yield fed -1 , fiber technological parameters, chemical as well as biochemical constituents of foliage and seeds of cotton. Significant cotton cultivars × nitrogen fertilizer sources interactions existed on most of studied traits.

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This investigation was carried out at the Agricultural Experiment and Research Station, Faculty of Agriculture, Cairo University during 2001 and 2002 seasons to study the effect of three sowing dates (25 March, 10 April and 25 April) on four Egyptian cotton cultivars ( Giza 70, Giza 80, Giza 83 and Giza 89). The results obtained could be summarized as follows: -Plant height decreased as sowing date delayed. Giza 70 gave the tallest plants. -Sowing on 25 March and Giza 83 variety gave the best values of position 1 st sympodial, branches/plant, No. of sympodial branches/plant, seed index, lint percentage and seed cotton yield/feddan . -Delayed sowing date (25 April) and Giza 83 gave the lowest values for number of days from sowing to 1 st bloom and 1 st open boll. While Giza 70 gave the highest boll weight with delayed sowing date. -Early sowing date (25 March) with Giza 83 and Giza 89 varieties gave the highest values of fiber length at 2.5 % span length, fiber strength, fiber stiffness, fiber toughness and yarn strength.

Two field experiments were conducted at Agricultural Research and Experimental Station, Faculty of Agriculture, Cairo University, Giza, Egypt during 2017 and 2018 seasons to evaluate the response of two Egyptian cotton cultivars to the balanced between macro and micro fertilization as foliar application. The experiment included 14 treatments which were the combination of two cultivar and the foliar application of six chemical nutrient solutions (zinc 100 mg/L, zinc 200 mg/L, boron 500 mg/L, boron 1000 mg/L, novatreen 1L/fed and citreen 1 L/fed) in addition to control treatment. The experiment was laid out in a randomized complete block design with split plot arrangement with three replications. The cultivars were allocated in the main plots and the foliar application of nutrient were distributed in sub-plots. The two cultivars significantly varied in almost of studied traits. Giza 196 cultivar significantly exceeded Giza 195 in plant height, number of sympodial branches/plant, total number of bolls/plant, boll weight, seed index, lint%, seed cotton yield. Also, Giza 196 significantly surpassed Giza 195 in fiber length, fiber strength, fiber elongation and micronaire. Compared with control, the foliar of nutrient solutions significantly increased growth characters, seed cotton yield and yield components. Furthermore, spraying of nutrient solutions significantly improved fiber technology characters, macro and micronutrients contents of cotton leaves, biochemical compositions of leaves and both oil and protein contents of cotton seed in both seasons. Generally, novatreen recorded the best for all studied characters. The interaction between cotton cultivars and nutrient solutions was significant regarding most of studied traits.