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Articles by Mehdi Dahmardeh
Total Records ( 2 ) for Mehdi Dahmardeh
  Mehdi Dahmardeh
  A field experiment was conducted at the University of Zabol, The experimental farm in Southeast of Iran during 2007-08 to investigate the impacts of nitrogen (N) rate and plant density of maize (Zea mays L.) c.v. K.S.C 704. Split plot experimental treatments comprising three plant densities under title subplot included (P1 = 60,000 plants ha-1, P2 = 80,000 plants ha-1 and P3 = 100000 plants ha-1) and Four nitrogen rates (N1 = 200 kg ha-1, N2 = 250 kg ha-1, N3 = 300 kg ha-1 and N4 = 350 kg ha-1) were kept in main plots. Maize produced significantly as well as grain yield at high than at low density. Grain yield and Photosynthesis Active Radiation (PAR) absorption increase with increasing N rate and the highest amount of grain yield were obtained at N4 treatments. Grain yield and PAR absorption increase with increasing plant density and the highest amount of grain yield were obtained at P3 treatment. It is concluded that growing maize at high density with application of 350 kg h-1 N rate that could result in maximum Grain yield of maize and hence increase productivity of maize crop.
  Mehdi Dahmardeh , Ahmad Ghanbari , Baratali Syasar and Mahmood Ramroudi
  In this study effect of different planting ratios and harvest time of intercropping maize and cowpea on economical and biological yield and quality of maize forage (Zea mays L.) was evaluated in the Department of Agronomy, University of Zabol, during 2007. The planting ratios of maize to bean was 100:100, 50:100, 100:50, 25:75, 75:25, 50:50 , 0:100 and 100:0, respectively. The intercropped of maize and bean in different planting ratio significantly affected the quantitative and qualitative characters of the forage. The highest yield of green fodder (65.7 t ha-1) was obtained by sowing the crops in ratio of 100:100. The highest grain yield (9.0 t ha-1) for maize was recorded from 75+25% ratio, maize and cowpea and the highest grain yield for cowpea (3.9 t ha-1) was recorded from 50+100% ratio, maize and cowpea, respectively. The highest crude protein (19.65%) was produced by the cowpea sole cropping and the lowest from the maize plots sole cropping (12.11%). The highest land equivalent ratio (2.26) was obtained by sowing the crops in ratio of 100:100 and the highest crude protein was obtained by harvest time in milky stage (15.2%).
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