The effect of shrimp shell powder on germination and seedling growth of rapeseed and wheat

Chitin possess polysaccharide and nitrogen and is white colored that produce by shrimps, crabs and so on many sea shellfish. To increase the quality of crops, reduce environmental hazards and reduce herbicides, it is essential to use natural herbicides. Therefore, we now need new herbicides that are safe and efficient for the environment. After cleaning, shrimp shells washed, dried and powdered. A solution of 10% was prepared and for concentration of 0, 3, 6 and 10% was used for each petri dish, 20 seeds of rapeseed cultivar Sarigol and 20 wheat seeds cultivar Cirvan used. According to the results, the effect of shrimp shell powder on germination and seedling growth of wheat, the germination rate, stem and root length in concentration of 3% had growth similar to the control. However, at the concentrations of 6% and 10%,the germination and seedling growth decreased significantly. Germination rate of rapeseed and seedling growth of root in all concentrations in particular 6 and 10% had a significant decrease compared to the control.Shrimp shell powder at 3% concentration had no effect or had a positive effect on germination and seedling growth of wheat. The concentrations of 6 and 10% decrease the rate of seedling growth in all treatments. Shrimp shell powder had more negative effect on rapeseed as a dicotyledon than wheat as a monocotyledon, significantly. Therefore, shrimp shell can used in the natural herbicides especially for dicotyledons.

کلیدواژه ها:

Shrimp shell ، Natural herbicides ، Wheat ، Rapeseed ، Seedling growth ، Germination