<p class="yiv0945129372msonormal">Two field experiments were conducted to evaluate the time of foliar application of 100 ppm salicylic acid (SA), two irrigation (IR) timings, three levels of spacing (SP) hill-1 with different plant density on growth, yield and quality characters of two sugar beet cultivars (‘Samba’ and ‘Farida’). The results revealed that the foliar application of 100 ppm SA at 30 days after planting (DAP) and 14 days after the first application significantly influenced top fresh mass and root biomass of sugar beet plants. Conversely, the increasing period between planting and first irrigation scheduling led to significant differences in fresh mass, sugar yield, and sucrose % as well as purity % of sugar beet. Plants density with 60 × 20 cm spacing hill-1 was found to be better than the other two spacings for major characters, particularly root fresh mass, and Total soluble solids and purity %. Inversely, spacing at 60 × 15 cm, between hills gave the maximum levels of top fresh mass, root yield and sugar yield in the first season. The interaction effect between spacing hill-1 at 60 × 20 cm and 100 ppm SA applied at 30 DAP gave the maximum levels of increment for most of the studied characters, particularly for cultivar ‘Farida’.<strong></strong></p>

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Two field experiments were conducted at Sakha Agric. Research Station, during two successive seasons 2013 and 2014, to study the effect of the magnetized water treatment (MWT) on some soil proprieties and productivity of soybean under salt affected soils conditions. A split plot design with three replicates was used. The main plots were occupied by water types (fresh water and magnetic irrigation water) and sub plots were devoted to water quality: 0.75dSm 2-4 were decreased while (Rc± %) of Ca ++ , Mg ++ , and K + in the soil extraction , after harvesting, were increased due to MWT under S1; S2 and S3, as compared with magnetized fresh water .-Yield of soybean , yield components, protein and oil yield content were positively correlated with (MWT) during both seasons.-It could be concluded that to alleviate water salinity hazard, improve some soil properties and increase productivity of soybean plant can be obtained by magnetic water treatment under salt affected soil.

The objective of this investigation was to study the overall impact of biofertilization (control, Microbin, Rhizobacterin, Phosphorin and four combinations) and the mineral nitrogen fertilizer levels (0, 40, 80 and 120 kg N/fed.  ) on yield and quality of sugar beet. This investigation was conducted during 2013/2014 and 2014/2015 seasons at the experimental at Kalabsho (31°25' E and 23°31' N), El-Dakhlia Governorate, Northeast Delta. A split plot design with four replications was used. Results indicated that, using only biofertilizer gave the lowest values of root length, root diameter, root fresh weight and top fresh weight/g as well as root and sugar yields. While, using bio fertilizer with mixed Microbeen + Rhizobacterin led to increase in values of mentioned rails on the other direction. Addition Phosphorin to any kind of bio fertilizers (Microbeen or Rhizobacterin) did not give any significant increase in all traits under study. Mineral nitrogen fertilizer at high levels 80 or 120 kg N/fed. have a significant increase in most characters under study. Generally, it could be concluded that application the mixture of Microbeen + Rhizobacterin + Phosphorien as biofertilizers and adding 120 kg N/fed. as a mineral fertilization for maximizing sugar beet productivity under the environmental conditions. K e y w o r d sSugar beet, biofertilizer, Mineral Nitrogen, yield and quality, root yield.

The calibration of APSIM-Wheat and AQUACROP models had been done manually for anthesis date, maturity date, grain yield and total biomass of one recent spring wheat cultivar (T. aestivum) under irrigated conditions in Egypt. Various treatments of planting dates, irrigation and fertilization were applied during two successive growing seasons of 2014/2015 and 2015/2016 in a split split plot design replicated three times. The calibration of APSIM-Wheat and AQUACROP was done for Misr3 cultivar using genetic parameters based on observed field data. Both models simulated anthesis, maturity dates, grain yield and total biomass accurately, with high values of determination coefficient (R 2 ), and D-index greater than 0.8 as well as lower values of root mean square deviation (RMSD) in most cases. The calibrated models were then employed to explore wheat yield and water productivity in response to irrigation and nitrogen fertilization options. Scenarios analysis indicated that water productivity and yield of wheat ranged from (1.2-2.0 kg m -3) and (6.8-8.7 t ha -1 ) respectively. Application of 0.8 from actual evapotranspiration along with 120 % from recommended nitrogen dose was the best predicted scenario achieving the highest value of crop water productivity. Investigating the suitable option achieving the current wheat yield by farmers (7.4 t ha -1), models demonstrated that application of 1.4 from actual evapotranspiration with 80 % from the recommended nitrogen dose was the best option to achieve this yield. At this point predicted water productivity was low and recorded 1.5 kg m -3 . Quantifying wheat yield in all districts of the studied area was also predicted using both models. APSIM-Wheat and AQUACROP can be used to drive the best management strategies in terms of N-fertilizer and water regime for wheat under Egyptian conditions.