Evaluation of canola growth parameters under different residues management of rice in Izeh weather condition
Subject Areas :
Seyed Keyvan Marashi
1
(Assistant Professor, Department of Agronomy, Ahvaz Branch, Islamic Azad University, Ahvaz, Iran.)
Hamid Amanipor
2
(M.S. of Agronomy, Department of Agronomy, Ahvaz Branch, Islamic Azad University, Ahvaz, Iran)
Keywords: Canola, total dry matter, Net assimilation rate, rice residues,
Abstract :
This experiment was performed to investigate the effect of different rice residue management on growth parameters of canola. This experiment was performed as a split plot experiment in the form of a randomized complete block design with three replications in the agricultural lands of Izeh city. The studied treatments include rice residue management at four levels (including 1- conventional cultivation (stubble burning), 2- cultivation in plowed land with rice residues, 3- cultivation in rice residues with a height of 20 cm, 4 - cultivation in rice residues with a height of 40 cm) and the second factor was three canola cultivars (including 401, 4815 and okapi). The results showed that the effect of rice residue management on leaf area index, total dry matter, crop growth rate, relative growth rate and net assimilation rate were significant. The effect of cultivars were significant in all measurement traits. There was no significant difference interaction between rice residue management and cultivar type on all studied traits. The maximum and minimum values in the studied traits were observed in cultivation management in cultivation in plowed land with rice residues and conventional cultivation, respectively and among different canola cultivars, the maximum and minimum values in the traits were observed in cultivar 4815 . In general, the results of the experiment showed that the cultivation in plowed land with rice residues is superior to conventional cultivation and other managements and leads to the improvement of growth parameters. Also, 4815 cultivar is superior to 401 and okapi cultivars.
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