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Articles by D.B. Tari
Total Records ( 2 ) for D.B. Tari
  M.S. Daliri , A. Eftekhari , H.R. Mobasser , D.B. Tari and H. Porkalhor
  In order to study the effect of cutting time and cutting height on yield and yield components of ratoon rice (Oryza sativa L.) Tarom langrody variety a field experiment was carried out in the field of Ghaemshahr Azad University in 2007. Experimental design was arranged in spilt plot in basis of Randomized Completely Block Design with four replications. Some agronomical traits such as numbers of effective tiller hill-1, panicle number m-2, total spikelet panicle-1, filled spikelets percentage, 1000 grains weight, grain and biological yield and harvest index were measured. Results showed that the effect of cutting time on number of effective tiller hill-1, panicle m-2, percent filled spikelet panicle-1, grain yield and harvest index were found statistically significant. Cutting height had a significant effect on number of tiller in hill, number of effective tiller in hill, number of panicle m-2, filled spikelet panicle-1 percentage, grain yield and harvest index. Interaction among cutting time and cutting height on number of tiller hill-1, number of effective tillers hill-1, number of panicle m-2 percent filled spikelet panicle-1 were significant. According to results cutting time at physiological maturity and also cutting in 40 cm cutting height from soil surface for the best grain yield of ratoon rice were recommended.
  Y. Nicknejad , R. Zarghami , M. Nasiri , H. Pirdashti , D.B. Tari and H. Fallah
  An experiment was conducted at Iran Rice Research Institute-Deputy of Mazandaran (Amol) in 2007, to study the physiological and morphological indices of different rice varieties. The experiment was carried out with, Factorial experiment in randomized completely block design comprising four replications. Studied factors were limitation of source and sink in 4 treatments viz., (1) cut all of leaves except flag leaf, (2) cut flag leaves, (3) cut 1/3 end of panicle and (4) control. Variety in four treatment was as Tarom, Neda, Shafagh and Fajr. Completion of source and sink limitation treatments were carried out at 50% flowering stage. Results showed that the most CGR was related to Shafagh variety (25.18 g/m2/day) in 1650 GDD and the least CGR was produced in the Tarom variety (21.1 g/m2/day) in 1452 GDD. The most RGR was obtained in the Shafagh and the least RGR was obtained in the Neda variety at the 850 GDD. Completion source and sink limitation treatments on leaf area index showed that cut all leaves except flag leaves had least leaf area index also with cut all of leaves and flag leaves in all of varieties the RGR was decreased. Results of morphological characteristics measurement showed that highest plant height and least plant height were produced in the Tarom and Shafag varieties, respectively. Maximum leaves number in the Tarom variety was produced in the 1180 GDD. Also, the Neda variety with produced 24 tillers per plant had most tiller number. The Tarom variety with coefficient 81.25% had most conversion all tillers to fertile tiller percentage.
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