Comparison and spatial analysis of grain yield in irrigated and dry wheat cropping systems of Bandar-e-Turkmen county, Golestan province

Document Type : scientific research article

Authors

1 gorgan uni.

2 Gorgan uni

3 Ferdowsi uni.

Abstract

Background and objectives: In agriculture, finding the optimal location for agricultural products can increase economic benefits, reduce negative environmental consequences, and be effective in improving the health of agroecosystems. In the spatial analysis of agriculture, active layers of information from available resources such as climate, water, topography and soil fertility are created in the form of a coherent and coordinated set to determine the type of land use. This study was conducted investigate the grain yield of wheat varieties cultivated in irrigated and dry farming systems in Bandar-e-Turkmen county during 2018-2019.
Materials and methods: In this research, 59 wheat fields including 16 irrigated and 43 rainfed fields were randomly selected with uniform distribution in the county. Also, EC, pH, percentage of soil organic matter and precipitation during the wheat growth period in the county were investigated this year. The varieties cultivated in these fields included Qaboos, Morvarid, line N91-17 and line N87-20. In the maturity stage and before harvesting by the farmers, a W-shaped pattern, sampling was done from the fields using a square of 0.25 × 0.25 quadrat, and the grain yield was calculated. Then, by evaluating different interpolation methods and choosing the best method, a wheat grain yield map was prepared at the level of agricultural lands of the county in the ArcMap environment.
Results: According to the results of this study, comparing the average grain yield between the type of rainfed (5.01 tons per hectare) and irrigated (5.16 tons per hectare) wheat cultivation system, as well as the comparison of the grain yield of varieties in the wheat fields of the county, there was no significant difference between cropping systems and varieties. Sufficient precipitation during the growth period and no need for irrigation in irrigated fields could be a reason for non-significant differences between selected irrigated and dryland fields. Preparation of a wheat grain yield distribution map at the level of the county showed that the southern and eastern parts of the region had higher yields due to low soil salinity, favorable acidity, a high percentage of organic matter, distribution and proper amount of precipitation in these areas. Also, the examination of varieties production in terms of their capacity or expected production showed that 83% of the fields had acceptable production.
Conclusion: Most of the wheat fields in the county can produce yield according to the expected yield of the varieties and are in favorable conditions. The lands in the western and northwestern parts of the county, due to the inability to produce acceptable yields such as high soil salinity, should be allocated to the cultivation of crops with lower environmental requirements and more adapted to the conditions of these areas.

Keywords

Main Subjects

Journal of Plant Production Research
Volume 32, Issue 3
September 2025
Pages 1-16

Files

Share

How to cite

Statistics