Evaluation of density and biomass of camelina (Camelina sativa L.) weeds affected by mulch and nitrogen

Document Type : Original Article

Authors

1 PhD. student, Department of Plant Production and Genetics, Faculty of Agricultural Sciences and Engineering, Razi University, Kermanshah, Iran

2 Associate Professor, Department of Plant Production and Genetics, Faculty of Agricultural Sciences and Engineering, Razi University, Kermanshah, Iran

10.22034/plant.2025.142918.1142

Abstract

Weeds reduce crop yield in different ways. Plastic mulch is one of the effective ways to reduce weed pressure in fields. Weeds are more efficient in using environmental factors than crops. One of the factors affecting the growth of plants is nitrogen, which causes rapid plant growth. The aim of this research was to determine the density, type and amount of dry matter of weeds in camelina affected by mulch and nitrogen. The experimental design was implemented in the form of a split plot based on randomized complete block design with three replications in two regions of Kermanshah (Razi University Agriculture and Natural Resources Campus) and Kangavar city (Sultanabad village). The factors were nitrogen fertilizer application at four levels of 0, 40, 80 and 120 kg per hectare and the use of plastic (transparent) at three levels (no plastic, plastic on the plant and plastic on the soil). The results showed that plastic mulch has a controlling effect on weed density and biomass. The plastic mulch on the soil had a more controlling effect than the plastic mulch on the plant on the weeds of camelina. When nitrogen was not used, the use of mulch on the soil compared to mulch on the plant caused a 70% decrease in the total density and 71% of the total biomass of weeds. When nitrogen was not consumed, the use of mulch on the soil reduced the total density and total biomass of weeds by 88% compared to the treatment without mulch. Plastic mulch at low nitrogen application reduced density and biomass of camelina weeds. High amounts of nitrogen consumption could help stimulate the growth of weeds, and plastic mulch in this case had less controlling power on weeds. The use of 120 kg of nitrogen per hectare along with plastic mulch on the soil caused a 49% and 51% decrease in the total density and total biomass of weeds, respectively, compared to the treatment without mulch without nitrogen use.

Keywords

References

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Plant Production and Genetics
Volume 6, Issue 1 - Serial Number 9
August 2025
Pages 149-160

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