Shehata, S. A., and M. A. El-Helaly, " Effect of compost, humic acid and amino acids on yield of snap beans.", Journal of Horticultural Science & Ornamental Plants , vol. 2, issue 2, pp. 107-110, 2010.
El-Helaly, M. A., "Effect of nitrogen fertilization rates and potassium sources on Broccoli yield, quality and storability", Research Journal of Agriculture and Biological Science , vol. 8, issue 4, pp. 385-394, 2012.
M.A.Mahmoud, A., M.M.I.Afifi, and M. A.El-Helaly, "Production of Organic Tomato Transplanting by Using Compost as Alternative Substrate for Peat-Moss", American -Eurasian Journal of Agricultural and Environmental, vol. 14, issue 10, pp. 1095-1104, 2014.
Shehata, S., A. A. Elsagheer, M. A. El-Helaly, S. A. Saleh, and A. M. Abdallah, "Shading effect on vegetative and fruit characters of tomato plant.", Journal of Applied Sciences Research, vol. 9, issue 3, pp. 1434-1437, 2013.
EL-Sayed, S. F., M. A. El-Helaly, M. S. Emam, and M. A. Abd El-Ghaffar, ". Effect of Some Post-Cold Storage Treatments on Shelf Life of Sweet Potato Roots. ", Journal of Horticultural Science & Ornamental Plants, vol. 5, issue 3, pp. 160-170, 2013.
Kesba, H. H., M. A. El-Helaly, S. A. Ghanny, and A.Suloma, "Potentials of aquaculture effluents on nematode management:1- effect of tilapia on two nematode species and cowpea growth.", Journal of Animal and plant Sciences , vol. 23, issue 1, pp. 281-289, 2014.
Shehata, S. A., M. A. El-Helaly, and M. A. EI-Said, "Using Natural Alternative Fertilizers for Potato Production Under Sandy Soil Conditions in Egypt", Journal Plant Production, Mansoura Univ, vol. 5 , issue 5, pp. 1845-1857, 2014.
Shehata, S. A., M. A. El-Helaly, and M. A. EI-Said, "Using Natural Alternative Fertilizers for Potato Production Under Sandy Soil Conditions in Egypt", Journal Plant Production, Mansoura Univ, vol. 5 , issue 5, pp. 1845-1857, 2014.
El-Helaly, M. A., and A. Suloma, "Influence of aquaculture effluent on Broccoli yield and quality", Australian Journal of Basic and Applied Sciences, vol. 6, issue 12, pp. 505-510, 2012.
Badawi, M. H., M. A. El-Helaly, and E. A.Shalaby, "Microbiota are necessary to ameliorate broccoli vegetative growth, yield and quality", Journal of Applied Sciences Research, vol. 8, issue 11, pp. 5512-5520, 2012.