Assessing of Some Summer Forage Crops to Infection by Common Smut and Downy Mildew Diseases for Forage and Silage Production

The present study was carried out at Sakha Agricultural Research Station in the summer 2020 and 2021 seasons. Ten forage crops namely, Millet Saudia Arabia, Selection Millet1, Millet2, Shandawel 1, Sudangrass Giza1, Piper black ,Sorghum SX-17 were evaluated for downy mildew common smut diseases yield some traits. Three cuts taken from seven fresh only one cut silage maize (95 days), Teosinte × teosinte (100days). Mean values of genotypes revealed significant to highly differences. had highest dry yields three total over two seasons which (26.4,22.3,17.1 65.7kg/plot) 5.3,2.8,2.5 10.59 ,respectively . For combined data millet Shandawal 1 46.7 kg/plot, 7.8 kg/plot ,while Arabia gave 31.3 4.9 yields, respectively, so surpass by 49.2 59.2% Also, sorghum, piper 19.2 26.5 % yield, respectively. Maize SC168 x plant height (298 cm) ,stem diameter (2.9 ,fresh/leaf stem percent(81%) (69 kg/plot) exceed 5.7,93.3,24.6 8.7% Meanwhile, 11.2, 16.0, 72.3 122.6%for percent ,respectively. hybrid SX -17 susceptible (s) disease on other hand pearl 2,3,Giza resistance ( R ) local millet1 , millet2 3 (Shandawal 1) recorded lowest infection disease1.666,0.000 1.333% also Giza 2.13 4.13% These tested resistant(R) can be used breeding programs as sources disease, In revers imported (Saudia millet) sorghum 20.33and 34.26, results indicated dangerousness importing materials. On hand, genotype resistant 0.000 first reading 0.666% second but (16.70%) infection. Therefore crossing between resulted moderate (MR) whereas, 5.966% 5.166% reading. As smut, disease. Finely, are better than Saudi millet. Hybrid best more twice (122.6%).