Two field trials were conducted in 2016/2017 and 2017/2018 seasons at Mallawy Agric. Res., Station, (latitude of 28 Ο N, longitude of 30 Ο E and altitude of 49 m above sea level), El-Minia Governorate, Egypt, to study the effect of two harvest ages (180 and 210 days after sowing), on yield and quality of eight sugar beet varieties (Steel, Pyramide, Kosmas, Lammia, Belino, Amelie, Drena, and Beta 398). A randomized complete block design (RCBD) was used, in a split plot arrangement and replicated three times. The mainplots were devoted for harvest ages, while the evaluated sugar beet varieties were randomly sown in the sub plots, in both seasons. The results revealed that: 1. Harvest age exhibited a significant effect on all studied traits in both seasons. Beets harvested at older age (210 days after sowing) surpassed those harvested earlier (180 days after sowing) in all traits in both seasons, except loss in sugar yield/fed and α-amino-N%. 2. The tested sugar beet varieties varied significantly in all studied traits in both seasons. Beta 398variety recorded the best values of root, top, and sugar yields/ fed, in both seasons. The best values of sucrose %, loss in sugar/fed and sugar recovery % were obtained by Drena variety in both seasons. Lammia variety recorded the highest values of α-amino-N %, while the highest value of alkalinity coefficient was obtained by Kosmas variety, in both seasons. Planting Beta 398 sugar beet variety and harvesting it after180 or 210 days from sowing could be concluded get the highest productivity and quality of sugar beet under conditions of Minia Governorate.

Two field trials were conducted during two successive growing seasons of 2016/2017 and 2017/2018 at Mallawy Agricultural Research Station, Agricultural Research Center, El-Minia Governorate (Middle Egypt) to study the effect of different levels of Nfertilization (160,190 and 220 kg /fed) on yield, yield components and quality of five sugar cane varieties (G.T.54-9(C9), G.2003-47, G.99-103, G.2004-27 and G.2010-7). A split plot design with three replications was used, main plots were represented by five sugar cane varieties (V1= G.T.54-9(C9), V2= G.2003-47, V3= G.99-103, V4= G.2004-27, V5= G.2010-7). The subplots were used for the three nitrogen levels (160, 190 and220 kg N / fed). The results indicated that: 1-Sugar cane varieties and N-fertilization levels exhibit significant effect on all studied traits in both seasons. Promising variety G.99-103 recorded the highest values of stalk hieght, stalk diameter (cm), millable cane ton/fed and sugar yield (ton/fed) in both seasons, while G.T.54-9(C9) variety recorded the highest values of sucrose %, purity% and sugar recovery%, whoever G.2004-27 variety outyielded the highest value of TSS%2-Increasing applied N levels from 160 up to 220 Kg N/fed significantly increased stalk height, stalk diameter(cm), millable cane ton / fed, sugar yield (ton/fed) and TSS (%), while190 Kg N/fed had the highest values of purity% and Sugar recovery%.3-The effect of interaction between sugar cane varieties and nitrogen levels on the studied traits was significant for stalk height in both seasons and purity%, sucrose % and T.S.S. % in plant crop season only. Generally, it could be concluded that under Middle Egypt conditions, it is recommended to inoculate G.99-103 sugar cane varieties with 220 Kg N/fed to maximize the productivity and quality of sugar cane yield.

The aim of this research was to assess the impact of different combinations of chemical nitrogen fertilizer levels and red yeast as a biofertilizer (F1,100 kg N+ red yeast; F2, 75kg N+ red yeast; F3,50kg N+ red yeast;F4, 25kg N+ red yeast; F5, unfertilized N+ red yeast and F6,100kg N without red yeast) on microbial biomass carbon and nitrogen, growth characteristics, yield and its components as well as harvest index of four durum wheat cultivars (V1, Beniswif 5; V2, Beni-swif 1; V3, Sohag4; V4, Sohag5). Results confirmed that, different wheat cultivars exhibited a significant effect on most studied traits in both seasons. V1 surpassed all tested cultivars for most studied traits followed by V2, meanwhile, V4 ranked the last one for most traits in both seasons. The combination of all chemical nitrogen fertilizers with red yeast possessed a highly significant effect on all studied characteristics. Significant interactions were recorded between cultivars and different combinations of yeast and nitrogen fertilizer levels on wheat yield and its components during both seasons, V2×F2 and V2×F1 obtained the greatest biological yield of 7.89 and 7.40 ton/fed. and grain yield of 20.75 and 20.49 ardab/fed in the first and second seasons, respectively. Grain yield (ardab/fed.) was highly positive and significantly correlated with all studied traits in both seasons. In conclusion, applying red yeast as a promising biofertilizer with different chemical nitrogen fertilizer rates could be recommended because it significantly increased the microbial biomass and, achieved a highly significant wheat yield, while reducing chemical fertilizers consumption.

to study the effect of three planting dates (November 1 st , November 15 th and December1 st) and three plant spacings (10, 15 and 20 cm) on growth, yield and chemical composition of quinoa plants to obtain the best agricultural transactions under the conditions of Central Egypt. The results showed significant effects of planting dates on all the studied traits, except for plant height, weight of 1000 seeds and protein% in both seasons, with the planting date of November 15 th being the best date. The effect of plant spacing was significant for all studied characters, except for weight of 1000 seeds and protein % in the first season. Planting quinoa seeds at 15 cm. was superior to the other spacings in most cases. The interaction between planting dates and plant spacing between plants was insignificant except for number of panicles/plant and yield of seeds/plant (g) in both seasons and the weight of 1000 seed (g) and seed yield/fed (ton) in the second season. Therefore, it is recommended to cultivate the quinoa on November 15 th at a distance of 15 cm apart under the conditions of Central Egypt because it gave the best values for economic characteristics.

A field experiments were conducted at Mallawy Agric. station, (latitude of 28 N, longitude of 30 E and altitude of 49 m above sea level), El-Minia Governorate, Egypt, during two successive growing seasons (2019 /2020) to study the effect of different concentrations of potassium silicate (P.Si), 0,3,6 and 9cm3/L foliar spray, under four soyabean genotypes, i.e. Giza 111, Giza22, Line3(H3L119 selected from Giza82) and Line7(H4L130 selected from Giza83) on yield ,its attributes and seed chemical analysis as well as pod warm infestation. The results indicated that, in both seasons foliar spraying of potassium silicate had highly significant effect on all studied character except seed index (S.I.). The concentration (6 cm3/L.) gave the highest values of seed yield (S.Y./F.) at 31.8 and 31.2% in the two seasons, respectively, as compared to control, as well as decreased the pod worm infestation (P.W.%) by 64.85% average both seasons. In the other hand Giza 22 surpassed the other genotypes regarding most characters, also the interaction between potassium silicate and soyabean genotypes had significant effect for all studied traits in both seasons, except seed weight/plant(S.W.) in the first season, the best values for all traits were obtained by foliar spraying of potassium silicate(6 cm3/L.) with Giza 22, furthermore the interaction ships among seed yield and its attributes through simple correlation( r) and regression(b) analysis were evaluated. Regarding correlation coefficients the seed yield was positively and significantly correlated with number of seeds /plant (No.S/P), number of pods plant-1 (No.p/p), Seed weight/ plant and seed index A strong correlation of seed yield with these traits indicated that, simultaneous improvement of these traits is possible. These findings indicate that selection for each of number of seeds plant-1, number of pods plant-1, seed weight/ plant and 1000-seed weight would be accompanied by high yielding ability under such conditions. Also, the seed yield was positively and significantly correlated with quantity traits Protein percent, oil percent, chlorophyl a (chl,a) + b (chl,b) and carotin(crt.), using silicon may be involved in cell elongation and/or cell division. negative and significant correlations were observed between seed yield (ton/fed.) and each of Infestation pods (P.W.%) and seeds (S.W.%) with pod worm percent. Decrease in these traits will ultimately Increase the seed yield. Regression procedure indicated that 6cm3/L. of potassium silicate gave the highest yield and yield components and reduce the pod worm infestation.