1-Pertaining to barley, verify the combative ability of weeds.
One of the leading crops in Saudi Arabia, barley are found to be unaggressive over Chenopodium as revealed by the outcomes of a current study. However on the contrary, it was found that Malva is less combative for wadding barley than Chenopodium.
2-Categorize the effects of interaction on the crop plants morphology.
3-Identify weeds conventions and their compelling interactions with crops.
Interaction exerts a strong force in the community of plants. Here, the second and third objectives are involved with the outcomes of the interaction between weed and crop on the morphology barley. The results based on experiments proved that the interference of Chenopodium with barley plants considerably reduce and raise at all concentration. Physiological and morphological changes in the height, number of tillers, number of leaves, shoot and root dry weight, shoot and root fresh weight, photosynthesis rates, chlorophyll content and leaf area took place due to the interference of weeds.
In the case of Malva, almost all barley growth parameters were decreased due to interference in all conditions of interaction (Chon & Kim, 2002).
In this thesis, it was concluded that planting crop plants in wintry weather is the solution to pass up weed plants for crops whose vegetative active is much elevated all through summer season. Even though this study was of great help in understanding the cereal response to weeds, however further research is required on the commonly grown crops. Further studies and researches are needed to explore the behaviour and forceful interactions of weeds with nearby crop plants, or under changing environmental and soil conditions.
4-Scrutinize the different interaction mechanism between crop plants and weeds.
Interaction between plants and weeds indicates the competition with respect to struggle for their superiority and existence. Various upshots of weeds on crop plants were verified to because of allelopathic the function of different applications of Malva and Chenopodium on barley seed considerably decreased the length of the root and powerfully repressed the germination proportion of seeds in barley crop.
The extracts of Malva and Chenopodium lead to few morphological changes like browning and deformation of roots and also the Plumule deformation in rising barley seedling. However, further studies are indispensable to revise allelopathic ability in crop that can be employed in the struggle in opposition to weeds devoid of disturbing the environment.
5-Examine the struggling and forbearing abilities of crop plant in opposition to weeds.