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Two field experiments were carried out during the two successive seasons of 2010/2011 and 2011/2012 in the Farm of Agric. Res. Station, Wady El-Natrown Area, Fac. Agric. Cairo University, Egypt under saline water and sandy soil conditions. This investigation aimed to study the effect of compost, natural alternative fertilizers (rock phosphate and feldspar) combined with bacterial inoculation (Azotobacter spp and Azospirillum perna + B. megaterium + B. circulans) on yield, tubers quality and its component of (dry matter, NPK, carbohydrate and nitrate) of potato tubers Diamant cultivar. Azotobacter spp and Azospirillum perna were used as nitrogen fixing bacteria from compost, B. megaterium was used as phosphate dissolving bacteria from rock phosphate and B. circulans was used as potassium dissolving bacteria from feldspar. The experiment included 13 treatments as follows three compost levels source of (N) (5.9, 8.8, 11.8 ton/fed.), three rock phosphate levels source of (P) (204.4, 140.7, 77.04 kg/fed.) and five feldspar levels source of (K) (888.8, 592.6, 580.7, 333.3, 251.9 kg/fed.) compared with control (mineral NPK at rate of 120 N -75 P2O5 -96 K2O kg/fed.) were applied in a (RCBD) randomized complete blocks design with three replicates. Results at harvest showed that significant increases in yield characteristics as (yield/plant, total yield, number of tubers and weight of tubers/plant) and tubers quality (dry matter, carbohydrate, nitrate) were treated with high rate of compost (11.8 ton/fed.) combined with potassium at the highest rate in the presence of bacterial inoculation mixture and showed significantly increasing compared with control. Therefore, compost, rock phosphate, feldspar and biofertilizers could be an alternative to mineral fertilizer for potato production.

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To improve yearlings and high potential yield of faba bean. Six populations P 1 , P 2 , F 1 , F 2 , BC 1 and BC 2 produced from three faba bean crosses , namely (Giza 429 x Giza 674), (Masr 1 x Giza 674) and (Giza 40 x Giza 402)) were conducted during three successive winter seasons 2013/14, 2014/15 and 2015/16. The experiment was conducted at the Experimental Farm., Faculty of Agricultural, Al-Azhar University (Assiut Branch). Recorded six generations mean days to maturity, branches number, number of pods, plant height per plant, 100 seed weight and seed yield per plant were exposed to upgrade test, and six abistatic detection method parameters and estimates of m, d, h, I, j and l parameters. The epistasis genes effects were reveal by the results that cannot be ignored when creating new program of breeding to expand faba bean inhabitants of economic traits. And controls inherit all attributes and nonadditive gene effects study added, with a value greater than the influence of genes dominate one in most cases. Among other elements added impact can be solved, i.e. , stabilizer × additive (I) interaction type and was also great and form the chief part of the effects of gene. (H) and (l) the consultation if days to maturity in two crosses, crosses the plant height in three, number one, cross sections and reflects the pods number / plant, 100 seed weight in three crosses and seed yield / plant in two crosses, indicating the duplicate type of interaction is allelic in these qualities. Accidentally discovered a sign and magnitude.