Document Type : Research Paper
Authors
1
Ph.D Student of Agrotechnology, Department of Production Engineering and Plant Genetics, Faculty of Agriculture, Shahid Chamran University of Ahvaz, Ahvaz, Iran.
2
Department of Production engineering and Plant Genetics, Faculty of Agriculture , Shahid Chamran University of Ahvaz. Ahvaz. Iran.
3
Department of Production Engineering and Plant Genetics, Faculty of Agriculture, Shahid Chamran University of Ahvaz, Iran.
4
Associate Professor of Khuzestan Agricultural and Natural Resources Research Center, AREEO, Ahvaz, Iran.
10.22124/cr.2024.26122.1798
Abstract
Introduction
Rice is one of the most important agricultural products in the world, and after wheat, it occupies the second place in terms of annual production. Planting rice in most parts of the world is done in the form of transplants, and finding new and suitable methods of planting rice with the aim of reducing water consumption and achieving optimal performance is an undeniable necessity. On the other hand, choosing the suitable planting date is one of the important agricultural managements to achieve optimal crop performance. Therefore, the present experiment was conducted with the aim of investigating the effect of land preparation different methods and different dates of nursery Preparation on the physiological characteristics and yield of three rice cultivars included Champa, Anbori Germez Paboland and Daniyal in Shavor region of Khuzestan province.
Material and Methods
In this experiment was investigated the physiological responses of some rice cultivars in different methods of land preparation of two-year (2021 and 2022) in Shavor research station in Khuzestan province, in the form of split split plots at form of randomized complete block design with three replications. different methods of land preparation (Planting bed) as the main factor includes puddling, with field capacity, flat and raised, planting date (different dates of nursery Preparation) as a sub-factor including 2, 12 and 23 June and rice cultivars as a sub-sub-factor included Champa, Anbori Germez Paboland and Daniyal. In order to prepare the planting beds (puddling, flat with field capacity and flat with dry soil) in the main land after plowing and disk, the soil was leveled by leveler. To prepare the raised bed in the ridge, after plowing, disk and leveler, the ridges were created by a ditcher (with a width of 50 cm and a height of 20 cm).
Results
The results of combination variance analysis showed that the effect of planting bed, planting date, variety and their interaction effect on rice yield had statistically significant differences. The average comparison results showed that the highest yield of grain yield was belonged to the application of flat bed with dry soil on the planting date of 2 June in the Anbori Germez Paboland cultivar and biological yield was belonged to the bed with field capacity on the planting date of 23 June in the Anbori Germez Paboland cultivar. Harvest index and canopy temperature in the stage of panicle emergence showed the best conditions in flat bed with dry soil treatment on 23 June planting date in Champa cultivar (respectively 51.71% and 32.22 ᵒC).
Conclusion
According to the results of grain yield, as the most important goal of rice planting, the cultivation of the local cultivar of Anbori Germez Paboland on the flat bed on the planting date of 2 June through the provision of environmental conditions (not implementing puddling and creating negative effects on the plant growth) and a suitable temperature (preventing the occurrence of stress in the flowering and seeding stage), achieved a high yield.
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