evaluation the effect of the residue management and different nitrogen sources on accumulation and remobilization of wheat stem reserve

a trial study was set to assess the influence of the plant residue management in conjuction with application of different nitrogen sources on accumulation and translocation of wheat stem reserves, at the agricultural faculty of shahid chamran university of ahvaz during 2011-2012. the experimental design was split plot at randomized completed block design arrangement. the main plot were different wheat residue management at three levels (residue moving, residue incorporated to the soil and burning) and the subplot were different nitrogen resources (control, 75 & 150 kg/ha urea, supernitroplus biological fertilizer)snbf and 75 kg/ha urea fertilizer+ snbf. plant characteristic such as main stem internode length, weight and specific weight of internodes and dry matter accumulation and translocation were measured to learn about their growth behavior under plant residue and nitrogen treatments. the result showed that the plant residues are able to inhibit the growth of the internode length in particular those in which developed at the lower internodes of the plant stem. while, various nitrogen application have been shown more striking in term of growth of internode length as compared to the plant residues treatment and the majority of internode lengths on the plants were able to develop maximum growth at the 150 kg/ha urea. similar growth for the internode length were obtained at the75 kg/ha urea+ snbf, except for the peduncle length. the present study reveales information that the lower internodes are capable of conserving the most remobilization (307 mg) while peduncle holding the least remobilization (95 mg).