No abstract

This study was conducted during winter seasons of (2009)(2010) and (2010)(2011) at Meet Louza Village, Mansoura Province, Dakahlia Governorate, Egypt on a silty clay soil to find out the residual effect rice N-biofertilization on the next wheat crop (Triticum aestivum L. c.v. sakha 93). Biofertilization 8 treatments involving inoculums of Azolla (Azl), Azospirillum (Azs), Azotobacter (Azt), and Cyanobacreria (Cyn) as well as mixtures (Azl + Azs), (Azl + Azt), (Azs + Azt) and (Cyn + Azt) which take the same location with the same layout of the experimental field for the previous crop (rice), soil N-fertilization (4 treatments of control, 12.5 %, 18.75 and 25 % of N-recommended level 75 kg N fed -1 as urea) were tasted in a split plot design with three replicates. The most important finding could be summarized as follows:  Treatment of 25 % N-level led to highest increases for plant height, grain yield, chlorophyll (a) and (b) content and the highest values were (101.27cm, 1.57 Mg fed -1 f.w) occurred with the combination of (12.5% N-level + Azs) and The superiority net return (3060 £.L. fed -1 .) of wheat crop, was given by combination of (25 % N-level + Azs).

O NLY few publications focus on the effect of humic substances plus foliar spraying with molybdenum on plants. Therefore, the objective of this study was to determine the influence of some humic substances (i.e., potassium fulvate and humate as a single treatment or in a combination) and the foliar application of molybdenum element (i.e., 0.0 and 50 mg L -1 as ammonium molybdate) on kidney bean (Phasuolas vulgaris L.;varitety Nebraska) plants. The field trial was carried out in a private farm at Tanah Village, El-Mansoura District, El-Dakahlia Governorate, Egypt during two consecutive growing seasons 2017 and 2018. The experimental design was a split-plot with three replicates. The findings showed that the combined treatment of potassium fulvate with potassium humate under foliar application of Mo at rate of 50 mgL -1 was the superior treatment for vegetative growth criteria, i.e. fresh and dry weights of shoot and plant height, chemical constituents in leaves (i.e. chla, chlb, chla+b), N, P, K , Mo and NPK nutrients uptake at a period of 45 days from sowing as well as yield, i.e. pods and seeds weights and nutritional elements concentration in seeds, i.e. nitrogen, phosphorus, potassium, molybdenum and NPK nutrients uptake at harvest stage of kidney bean plants. While the lowest values of all aforementioned traits were recorded with untreated plants (without both humic materials and Mo). Also, available N, P and K in soil after harvesting kidney bean plants pronouncedly differed due to all studied treatments.

To maximize the beneficial effect of using some stimulation substances (Potassium Fulvate and Yeast) along with foliar application of micronutrients on wheat crop productivity and properties of sandy soils under irrigation with saline ground water. Two field trials were conducted during two successive winter growing

Two field experiments on soybean (Glycine max L.; Variety Giza, 111), wheat (Triticum aestivum L.; Variety Misr 1), were conducted at Agricultural Experimental Research Station of Tag El-ezz, Agricultural Research Centre, El-Dakhalia Governorate, Egypt during two successive summer -winter seasons of (May to November 2019) and (November 2019 to May 2020). The experiment treatments were included eleven ( 11) treatments (T1-Absolute control, T2-100% U (recommended dose of urea fertilizer), T3-100% CCU (recommended dose of carbon coated urea fertilizer), T4-75% U+ 20 m 3 farm yard manure (FYM), T5-75% U+10 m 3 FYM, T6-50% U+20 m 3 FYM, T7-50% U+10 m 3 FYM, T8-75% CCU+20 m 3 FYM, T9-75% CCU +10 m 3 FYM, T10-50% CCU +20 m 3 FYM, T11-50% CCU +10 m 3 FYM). The treatments were layout in complete randomize block plot design with three replicates. The results indicated that the highest mean values of vegetative growth stage (N, P and K % and chlorophyll a, b and Carotene), chemical content of harvest stage (N, P and K % in soybean stover and seeds or wheat grains and straw) and protein %, as well as yield and its components (plant height cm, stover, seeds ton fed -1 and 100 seed weight of soybean or straw, grains yield (Ton fed -1 ) and1000 grain weight (g) of wheat) were recorded with integrated application of inorganic and organic fertilizers. T8-75% CCU + 20 m 3 FYM, was considered as most suitable treatment for obtaining the highest yield of soybeanwheat under these experimental conditions.