List of Articles Grain yield Open Access Article Abstract Page Full-Text 1 - The Effect of Drought Stress on Grain Yield and Oil Rate and Protein Percentage of Four Varieties Castor in Climatic Conditions of Damghan Gh. Laei 10.22034/jchr.2012.543993 Open Access Article Abstract Page Full-Text 2 - Quantitative and Qualitative Responses of Corn 704 Singel-Cross to Different Planting Patterns and Nitrogen Fertilizer Levels Jaber Khordadi Varamin Seyed Mohammad Reza Haj Seyed Hadi Mohammad Taghi Darzi Arash Rozbahaei 10.22034/jchr.2022.1900396.1133