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Dejpa Bitumen

Effects of petroleum mulch and method of preemergence application of diuron, prometryne, CIPC and DCPA on cotton weed control, soil moisture, soil temperature, and cotton yield

This study investigates the impact of petroleum mulch combined with preemergence herbicides (diuron, prometryne, CIPC, and DCPA) on weed control, soil moisture, temperature, and cotton yield. Results showed that petroleum mulch, especially when used with herbicides, significantly reduced weed growth, preserved soil moisture, regulated soil temperature, and improved cotton yield. The findings recommend integrated use of petroleum mulch and herbicides as an effective strategy for optimizing cotton production under challenging climatic conditions.
Dejpa Bitumen

Effect of bitumen mulching on soil conditions

The effects of ‘Colas’ bitumen emulsion on soil temperature, soil moisture and the stability of soil structure were determined in temperate and tropical conditions.
At a depth of 5 cm, soil temperature increments of from 2°c in England to 8°c in Trinidad were recorded when the soil was mulched with bitumen. Temperatures under bitumen were shown to be higher than those under mulches of black polyethylene, sand or pine needles, and in unmulched soil. It was also shown that growing crops exerted an increasing shading effect which limited the period of effectiveness of a mulch. When the mulch is applied in bands, these should be at least 15 cm wide for maximum temperature increments to occur.
Soil moisture studies were conducted both in the field and under laboratory/glasshouse conditions. It was found that only comparatively thick mulches on smooth soil surfaces, caused any appreciable reduction in water losses through evaporation.
It was found that the crumb structures of soils treated with very thin bitumen mulches (∼150μ thick) were able to withstand considerably more weathering by rainfall or irrigation than unmulched soil before breakdown of the soil surface structure occurred.
Dejpa Bitumen

Reducing Evaporation with Iranian Petroleum Mulches in Arid Climates

This study examines the effects of various Iranian petroleum-based mulches on soil surface evaporation. The findings reveal that these mulches significantly reduce water loss through evaporation, especially in arid and semi-arid regions. By forming a protective layer over the soil, petroleum mulches help retain moisture and enhance soil resilience under harsh climate conditions. The effectiveness of the mulch depends on factors such as mulch type, application thickness, and soil characteristics.
Dejpa Bitumen

Some Consequences Of Bituminous Mulches

This article investigates the consequences of using bituminous (oil-based) mulches in agriculture and construction projects. Results show that bitumen mulches increase soil temperature and help retain soil moisture. They are also effective in weed control and reducing soil erosion. However, improper use may lead to environmental pollution. The article emphasizes the importance of safe application and encourages exploring eco-friendly alternatives to mitigate environmental impacts.
Dejpa Bitumen

Shifting Sands, Oil Mulch Technology, and Its Consequences


This in-depth interview explores the origin and development of oil mulch technology in Iran, as recounted by its pioneer Engineer Seyyed Mehdi Mahdavi and field expert Engineer Ghamreza Ahannin. Developed in the 1960s to combat desertification and control shifting sands, this innovative petroleum-based method was successfully deployed across Iran, including Khuzestan and Boein Zahra. The article discusses technical implementation, challenges, environmental impacts, and the continued relevance of this technology in addressing dust storms and land degradation.

Dejpa Bitumen

Use of Petroleum Mulches for Erosion Control and Vegetation Recovery | Technical Publication

A comprehensive review on applying petroleum mulches for soil erosion control and vegetation enhancement in arid regions. Field experiences, environmental challenges, and optimization strategies discussed.
Dejpa Bitumen

Preliminary Report on Afforestation in Iran | Early Assessment of Projects in Arid Regions

A specialized review of early afforestation projects in Iran’s dry and semi-dry regions. Focus on species selection, planting strategies, and overcoming climatic constraints to establish sustainable vegetation cover.

Dejpa Bitumen

Soil Surface Application of Asphalt for Afforestation in Semi-Arid Zones of Iran


This innovative study demonstrates how surface asphalt application to soil can significantly enhance water harvesting and tree growth in drylands.
The technique shows substantial promise in reducing irrigation needs, supporting afforestation efforts, and combating desertification across Iran’s semi-arid regions.
Dejpa Bitumen

Effect of Surface and Subsurface Application of Petroleum Mulches on Sugar Beet Emergence and Growth

Explore how surface and subsurface petroleum mulches impact seedling emergence and development.
A must-read for agricultural innovation!
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