Showing 2 results for Namarvari
M. Namarvari, Gh. Fathi, A. Bakhshandeh, M. H. Gharineh, S. Jafari,
Volume 2, Issue 5 (12-2012)
Abstract
The effects of drought stress at different growth stages and nutrition systems were studied on yield and yield components of wheat (Chamran cv.). This experiment was carried out as split plot based on completely randomized blocks design with three replications at Research Farm of Ramin University of Agriculture and Natural Resources, Khuzestan province, Iran, during 2009-2010. Irrigation at three levels of I1 (irrigation cut-back from spike formation stage to harvesting, 55 zadox), I2 (irrigation cut-back in anthesis stage to harvesting, 65 zadox) and I3 (full irrigation, control) were in main plots, and fertilizer systems including chemical fertilizer (NPK), manure (M), biological fertilizer (B) and manure + biological fertilizer (MB) were in sub-plots. Results showed that drought stress and nutrition systems had significant effect on grain yield and biological yield (P<0.01) and fertilizer system affected harvest index (P<0.05). Maximum grain yield (5304 kg/ha) was obtained in I3 treatment and minimum grain yield (3413 kg/ha) was in I1 treatment. In fertilizer treatments, maximum grain yield (5081 kg/ha) belonged to MB and minimum grain yield (3142 kg/ha) to B treatments. According to the results, application of manure plus biological fertilizer improves grain yield of wheat, even under drought stress.
M. Namarvari, G. Fathi, A. Bakhshandeh, M. H. Gharineh, S. Jafari,
Volume 3, Issue 10 (2-2014)
Abstract
The aim of this experiment was that study the effect of drought stress and different chemical and organic fertilizers systems on wheat flag leaf chlorophyll. This experiment was conducted as split plot based on completely randomized block design (CRBD) with four replications during 2009-2010 at experimental fields of Ramin university. Irrigation treatments were achived in I1(irrigation droped from anthesis stage to harvesting 55 zadox) and I2 (spike formation to harvesting 65 zadox) and I3 (full irrigation, control treatment), and fertilizers treatment included chemical fertilizer (NPK), manure fertilizer (M), biological fertilizer (B), biological fertilizer + manure fertilizer (MB) at the beginning of plantation. maximum and minimum chlorophyll leaf content were related to I3 and I1, respectively. Also, maximum chlorooyll was related to biological fertilizer mixed with manure (MB) and chemical fertilizers (NPK) and minimum was for biological fertilizer(B), respectively. A positive corelation was observed between grain yield and flag leaf chlorophyll at with high significance. Therefoere, flag leaf chlorophyll is a good trait selection performance under drought stress conditions and different fertilizer systems. .
