scholarly journals A Comparative Study of the Relative Importance of Agricultural Information Sources for Date Palm Farmers in Some Desert Areas

2019 ◽  
Vol 57 (4) ◽  
pp. 1107-1124
Author(s):  
Hassan Shafey
2021 ◽  
Vol 52 (3) ◽  
pp. 763-773
Author(s):  
N. A. Al-Harbi

This study was aimed to investigate weeds kind in palm plantations. Date palm is the most chief economic crop in most countries of the Arabian Peninsula. Many factors, such as the presence of weeds, may cause a huge loss in the production of dates. Despite the severe damage caused by the presence of some weeds in agroecosystems, many weeds have many medicinal and economic uses. A total of 62 species were listed in palm Plantations in Tabuk and Al-Qassim Regions. A total of 51 species were listed in Tabuk Region (The number of unique species in the Tabuk Region reached 32 that not recorded in Al-Qassim Region. Also, 19 species were recorded in both of Tabuk and Al-Qassim Regions). A total of 30 weeds were listed in Al-Qassim Region (The number of unique species in the Al-Qassim Region reached 11 that not recorded in the Tabuk Region. In addition to, 19 species were recorded in both of Tabuk and Al-Qassim Regions). Zygophyllaceae was the most common family, the majority life span was annuals and the most common life form was therophyte in both Tabuk and Al-Qassim Regions. Data management and classification were achieved using PCORD (TWINSPAN and DCA analyses).


Author(s):  
Bogdan-Vasile Cioruța ◽  
Mirela Coman

Almost a third of the Earth's surface is occupied by vast stretches of stone and sand, having a torrid climate or, on the contrary, extremely frigid. As such, the regions considered to fall into the category of deserts, which can be hot and arid, semi-arid, coastal, or cold, are of interest for the present study. In the same context, at the level of the Maramureș County surface, a major place is occupied by the areas that have served mining activities, and which, at first glance, have similarities with the specific landscapes of deserts. Starting from the aforementioned, through the present work, we intend to underline, in the form of a comparative study, the main common elements that exist between the naturally formed (globally) and anthropic (locally) deserts, for those the latter considering the areas of Maramures County, affected by the specific mining pollution.


2021 ◽  
Vol 48 (1) ◽  
pp. 55-62
Author(s):  
Hussein J. Shareef ◽  
Abdulrahman S. Alhamd ◽  
Summar A. Naqvi ◽  
Mamdouh A. Eissa

Abstract The date palm can grow in desert areas using high salinity groundwater by increasing the number of irrigation cycles. A field experiment was carried out on date palm cv. Sayer offshoots grown in sandy saline soil during the 2017 and 2018 growing seasons. The outcomes demonstrated that the application of saline (10 dS m–1) groundwater every four days increased plant height, number of new leaves, total chlorophyll, and relative water content. In turn, the hydrogen peroxide, malondialdehyde, and electrolyte leakage were reduced. Also, the effect of this treatment improved the growth of the plants, thus reduced the absorption of sodium, chloride, and increased potassium, then decreased the Na/K ratio. Cluster analysis showed two distinct cluster groups. In the first group, the dissimilarity between the treatments is illustrated by the influence of freshwater. While the second group showed the similarity between the treatments of four days and every week in the subgroup. Whereas treatment of two weeks duration shows the most detrimental effect on growth indices and chemical properties of offshoots. The utilization of saline groundwater in the water system of the date palm is the best option among the solutions possible in the current conditions of drought and thermal retention.


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