Potential of irrigation technology to control soil salinity and greenhouses pepper yield production improvement in sandy soil of Southern Tunisia

2020 ◽  
Vol 10 (3) ◽  
pp. 287
Author(s):  
Ines Gasmi ◽  
Basem Aljoumani ◽  
Mohamed Mechergui ◽  
Saeid Eslamian ◽  
Mohamed Moussa
Keyword(s):  
Sandy Soil ◽  
Soil Salinity ◽  
Control Soil ◽  
Irrigation Technology ◽  
Southern Tunisia ◽  
Yield Production ◽  
Production Improvement

Effect of amendment of urine on clayey sandy soil salinity

2015 ◽  
pp. 329-334
Author(s):  
M Dakouré ◽  
F Kagabika ◽  
D Sangaré ◽  
B Sawadago ◽  
A Maïga ◽  
...  
Keyword(s):  
Sandy Soil ◽  
Soil Salinity

Advanced Numerical Analysis of Jack-Up Spudcan Penetration in Layered Sandy Soil

2013 ◽  
Vol 339 ◽  
pp. 628-631
Author(s):  
Jian Zhang ◽  
Wen Xian Tang ◽  
Wen Long Qin ◽  
Chao Gao
Keyword(s):  
Numerical Analysis ◽  
Numerical Model ◽  
Plastic Strain ◽  
Sandy Soil ◽  
Control Soil ◽  
Lagrangian Analysis ◽  
Negative Element ◽  
Distortion Control ◽  
Explicit Procedure ◽  
Jack Up

Quasi-static numerical model of jack-up spudcan penetration in layered sandy soil was presented in this paper, based on explicit procedure. Three different methods, such as Lagrangian analysis, Lagrangian analysis with distortion control and Lagrangian-Eulerian analysis, were used to control soil negative element volumes or other excessive distortion. The results showed that, reasonable and stable numerical results could be solved by Lagrangian-Eulerian analysis. The magnitude of plastic strain, however, decreases at first and then increases to the maximum.

scholarly journals The Effect of Soil Coverings on Soil Respiration in Sandy Soil

2003 ◽  
pp. 21-25
Author(s):  
Csaba Varga
Keyword(s):  
Soil Respiration ◽  
Moisture Content ◽  
Sandy Soil ◽  
The Other ◽  
Co2 Production ◽  
Favourable Effect ◽  
Control Soil ◽  
Soil Co2 ◽  
The Difference ◽  
Soil Co2 Production

The purpose of our experiments is to study effect of different soil coverings (porous black polyethylene called agroszövet and black polyethylene) on CO2 production in sandy soil. The CO2 production was measured in our laboratory according to Witkamp (1966 cit. Szegi, 1979), after 5 days’ incubation period. Samples were taken off four times (March, May, July, September) in every year of the experiment. In May, July and September of 2000, the CO2 production was significantly higher in the control than in the treatment soil. With the exception of September, the value of CO2 production was significantly higher under black polyethylene than under agroszövet. In March and May of 2001, the soil under black polyethylene, and in July and September the control soil produced the greatest quantity of CO2. With the exception of July, significantly more CO2 was produced under black polyethylene than under agroszövet. To study the dynamic of CO2 production there was find a significantly higher value May and September of 2001 than 2000. Similarly significant higher CO2 production was detected in September than in the other months In average of two experimental years the difference between the produced CO2 under different coverings was occasionally. Explicit upward tendency in soil CO2 production was detected only in case of control soil. There was a medium (r=0,413) relationship observed between the moisture content and the CO2 producing ability of soil. To sum up the soil coverings had favourable effect on soil CO2 production very rearly, but they could help to conserve the moisture content of soil.

scholarly journals Evaluation of cactus pear clones subjected to salt stress

2021 ◽  
Vol 9 (2) ◽  
pp. 235-242
Author(s):  
Joelma De Lira Freire ◽  
Mércia Virginia Ferreira Dos Santos ◽  
José Carlos Batista Dubeux Júnior ◽  
Egidio Bezerra Neto ◽  
Mário De Andrade Lira ◽  
...  
Keyword(s):  
Salt Stress ◽  
Experimental Design ◽  
Salinity Tolerance ◽  
Sandy Soil ◽  
Soil Salinity ◽  
Dry Matter ◽  
Germplasm Bank ◽  
Cactus Pear ◽  
Whole Plant ◽  
Tolerance To Salinity

Cactus pear is an important source of fodder for herbivores, though its production is affected by soil salinity. This work aimed to evaluate the development of cactus pear clones subjected to salt stress as a measure of their salinity tolerance. The experimental design was a randomized block with 6 replications. Twenty genotypes of cactus pear were used from the Active Germplasm Bank, with variability in resistance to carmine cochineal [Dactylopius opuntiae (Cockerell)] as this insect species destroys many stands of cactus on farms. One cladode was planted per pot containing 12 kg of sandy soil. Water with a salinity of 3.6 dS/m was applied at 14-day intervals. The clones were scored at 28-day intervals for degree of damage to cladodes (1‒5) and were harvested when they reached a score of 5, showing 100% damage (chlorosis and dehydration) to the whole plant. The Liso Forrageiro clone took 419 days to reach Score 5, indicating its greater tolerance to salinity. Highest dry matter yields were achieved by Orelha de Elefante Mexicana and Orelha de Elefante Africana clones with 51.5 and 50.8 g/plant, respectively, while Liso Forrageiro yielded only 36.1 g/plant, despite having similar surface area and weight of roots to these 2 clones. Further studies in the field involving these better-performing clones seem warranted to determine how the pot trial results are repeated in the field, especially in areas where carmine cochineal insect is prevalent.

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