Irrigation of Sandy Soils, Basics and Scheduling

Alhammadi, Mohamed S.; Al-Shrouf, Ali M.

doi:10.5772/55117

Cited by 8 publications

(2 citation statements)

References 23 publications

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“…The sustainable development of oases depends on several influencing factors that should be carefully evaluated at the field level with the inter-relation of physical characteristics of agricultural lands and crop types. The irrigation of saline soils requires basic management control related to timing and amount of irrigation, which strongly affect plant physiologic characteristics and yield loss (Alhammadi and Al Shrouf 2013). Southwestern Tunisia undergoes rapid expansion of agricultural activities depending exclusively on groundwater resources, which results in rapid failing down of water table exceeding the replenishment of these aquifers (exploitation rate of about 176.7% and 78.23% in Kebili and Tozeur regions (CRDA 2018).…”

Section: Site Descriptionmentioning

confidence: 99%

Irrigation water management for sustainable cultivation of date palm

et al. 2021

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Given the aesthetic, cultural, ecological, and economic value of the date agro-system in Southwestern Tunisia, different management and conservation strategies have been warrantee to optimize land productivity sustainably. However, the inefficiency of the adopted management actions resulted in a continuous loss of soil fertility and decreasing fruit quality. Thus, the present paper attempts to evaluate accurately the evolution of the principal factors influencing date palm production and agricultural activities sustainability in the region. Integrated approaches of various irrigation water quality indices and geostatistical analysis coupled with field investigation and farming survey were applied to evaluate the evolution of key parameters influencing the development of date palm sustainably. The obtained results of the research indicate that the progressive land degradation is due to the effects of poorquality of water used for irrigation (EC between 674.4 and 5450 µs/cm, SAR exceeding locally 20 and about 80% of all the samples waters are of undoubtful quality according to the calculated indices), inappropriate irrigation scheduling (physiologic drought that might reach 3 months), traditional basin irrigation technique (decreasing of yield productivity, locally of 0.23, 0.23 and 0.25 kg m−3), an indigenous knowledge (sandy amendment, biologic compost, gravity improved irrigation…..). Also climate variability has leaded to furthermore degradation of crop quality. The degradation of date palm culture will be a great challenge for environmental conservation, food security and socio-economic values of the region unless a reasonable management take place, a flexible strategy based on indigenous knowledge of landowner, and scientific-based outlines with climate risks evaluation. The present paper might be useful to policy makers as a multi-disciplinary research covering most of the important aspects of date palm production.

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Section: Site Descriptionmentioning

confidence: 99%

Irrigation water management for sustainable cultivation of date palm

et al. 2021

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“…Many factors effects on irrigation amount and irrigation intervals such as climate conditions, soil texture and the quantity with quality of available water resources, it represented by rain, water bodies and wells. These factors are important to recognize water consumption [2,3].…”

Section: Introductionmentioning

confidence: 99%

Water Requirements of Crops under Various Kc Coefficient Approaches by Using Water Evaluation and Planning (WEAP)

Najm¹,

Abdulhameed²,

Sulaiman³

2020

IJDNE

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In this study, the Dual-Kc approach within FAO-56 paper was applied by water evaluation and planning (WEAP) to get the Kc parameters (Kcb and Ke) and to calculate the water requirement for various soil textures. The results compared with the outputs of Single-Kc approach for summer and winter crops in addition to trees. The results showed when applying Dual-Kc approach, the water requirements was more compared with the Single-Kc approach, except the tomato, eggplant, and Broad bean crop, which decreased by 5%, 4%, and 17% respectively. Also, there was a different in values of coefficient when compare two approaches, it was increased in Dual-Kc approach for wheat by 62% with 20% during initial and end-stage while ranged between 26-58% for trees during all season with more different for other winter and summer crops. The water requirement of crops was different according to soil texture. The net water requirement of wheat was 429 mm and 433 mm for sandy loam and clay loam respectively, with different in irrigation intervals 11 and 12 respectively, while the silt loam was recording water requirement 417 mm with 8 irrigation intervals.

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