Mohammad Osman Omara; Mahmoud Ramroudi; Alireza Rashki; Mohammad Galavi; Mitra Jabbari
Volume 28, Issue 2 , June 2021, , Pages 357-368
Abstract
Saravan is one of the most date-growing regions of Iran, and the Mazafati cultivar is a high-yielding cultivar of this region. Dust phenomenon in this city occurs in summer, coinciding with the productivity of palm trees. In this study, the effect of dust on the leaves and clusters of date trees and ...
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Saravan is one of the most date-growing regions of Iran, and the Mazafati cultivar is a high-yielding cultivar of this region. Dust phenomenon in this city occurs in summer, coinciding with the productivity of palm trees. In this study, the effect of dust on the leaves and clusters of date trees and its yield in three regions of Saravan, Jalqh, and Rutak with different dust intensities were investigated in 2016 and 2017. Five groves were selected in each of the three areas, and within each grove, five palm trees were identified, and five leaves from each tree were selected randomly. Sampling was done during May, June, July, and August. The results showed the effect of dust intensity on the drying of leaves, leaflets, and fruit marketing. According to statistical analysis, the amount of dust in the study areas during two consecutive years had a significant and undeniable effect on the changes in the studied traits. The results of the average comparison of the total yield of dates showed that the Saravan region had the highest yield, about 210.14 kg per tree, and the Jalqh and Rutak areas, respectively, had 129.57 and 63.77 kg per tree. These results showed about a 30 to 40% reduction in yield of Mazafati cultivar dates in the Rothak region with the highest dust intensity. The results showed the destructive effects of dust on the studied traits.
Majid Zaboli,; Akbar Fakhire; Ahmad ghanbari; Hamid reza Moradi; Alireza Rashaki
Volume 17, Issue 2 , September 2010, , Pages 317-330
Abstract
Growth of plants species in an area is affected by biological and environmental factors of that region. It is necessary to study some ecological requirements of species and also environmental characteristics of the study area in order to determine site potential and plant growth needs. this study performed ...
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Growth of plants species in an area is affected by biological and environmental factors of that region. It is necessary to study some ecological requirements of species and also environmental characteristics of the study area in order to determine site potential and plant growth needs. this study performed to determine potential habitat of Haloxylon persicum and Haloxylon aphyllum in Sistan province by using Geographic Information System (GIS) technique. In this way sampling from habitats carried out for recognition of ecological requirements. Also thematic maps of area provided and digitized for attainment data layers which were needed. Then various sections of area were investigated and were compared with ecological requirements of these two species. Finally, the different layers of information were put together for every species. Base on our results, 3.18% and 3.52% of the studied area was suitable for growing H. persicum and H. aphyllum respectively. Assessment of accuracy of model was 93.3%.