## 3 Results and Discussion
### Germination Seeds  
The germination energy was higher in seeds subjected to laser light and magnetic field stimulation and was smaller for silver nanocolloid, relative to the control (Table 2). The conducted analysis showed that a significant increase was observed in relation to the controls for GE by about 37% for \(p\). In turn, with regard to N\({}_{68}\), a significant decrease was observed for AgNC by about 83%, and, for N\({}_{e14}\) for \(p\) and AgNC by about 50% and 66%, respectively. A significantly positive effect of laser radiation on the germination of seeds was found in white lupine [56], white clover [57], radish [58], cucumber [59] and tomato [60]. No positive effect was observed in oats [61], sugar beet [62], cucumber and tomato [60], and pepper [61]. Similarly to the studies presented here, many authors examined the effect of an He-Ne laser and alternating magnetic field on the germination of amaranth seeds. \begin{table} \begin{tabular}{l l l l l} \hline \hline
**Parameters** & **C** & **L** & \(p\) & **AgNC** \\ \hline
**Germination** & & & & \\ \hline _GE(\%)_ & 54 \(\pm\) 2.31 (1) b & 60 \(\pm\) 13.86 b & 74 \(\pm\) 12.44 a & 53 \(\pm\) 16.45 b \\ _GC(\%)_ & 84 \(\pm\) 8.64 a & 79 \(\pm\) 11.02 a & 88 \(\pm\)8.64 a & 75 \(\pm\) 13.61 a \\ _Emergence_ & & & & \\ \(N_{e8}\) & 6 \(\pm\) 0.00 a & 5 \(\pm\) 1.41a & 3 \(\pm\) 2.12 ac & 1 \(\pm\) 0.00 bc \\ \(N_{e14}\) & 6 \(\pm\) 0.00 a & 6 \(\pm\) 0.00a & 3 \(\pm\) 1.41 b & 2 \(\pm\) 0.71 b \\ \hline \hline \end{tabular}  \({}^{(1)}\) SD; C—control; L—laser light; \(p\)—magnetic field; AgNC—silver nanocolloid. Different letters a—s—s—s—s—s——s——s——s———s———s—  
[PERSON] et al. [63] used the laser beam stimulation of the power density of 6 mW/cm\({}^{2}\), the alternating magnetic field with the induction 30 mT, the frequency 50 Hz for t = 30 s as well as the combination of both factors for amaranth seeds cvs Aztek and Rawa. The effects on the germination of the seeds were examined on Petri dishes in darkness at temperatures from 10 to 55 \({}^{\circ}\)C. The most pronounced effects important for the germination process were registered at the temperatures of 20 and 25 \({}^{\circ}\)C. When the above parameters of the stimulation of amaranth seeds cv. Rawa were present, the increase in dry matter, raw protein, crude fiber, crude ash and in the final yield was observed. An increase in the levels of Leu, Val, Lys, and Phe + Tyr amino acids as well as decreased levels of Arg, Glu, and Ala. The levels of Cys, Tr, Ile, His, and Pro remained unchanged. [PERSON] and [PERSON] [64] applied a laser beam of the power density of 6 mW/cm\({}^{2}\), alternating magnetic field with an induction of B = 30 mT and frequency of 50 Hz for t = 30 s, and the combination of these factors to stimulate amaranth seeds. A magnetic field applied to dormant seeds was found to increase the rate of subsequent seedling growth of barley, corn, beans, wheat, certain tree fruits, and other tree species. Moreover, a low frequency magnetic field (16 Hz) can be used as a method of post-harvest seed improvement for different plant species, especially for seeds of temperature sensitive species germinating at low temperatures [65]. Studies conducted by [PERSON] et al. [66] and [PERSON] and [PERSON] [67] demonstrated that the use of AgNPs in the concentration of 10 mg\(\cdot\)L\({}^{-1}\) AgNPs inhibited the germinating capacity of _Hordeum vulgare_ seeds and reduced the length of sprouts in flax (_Linum usitatissimum_) and barley (_Hordeum vulgare_). [PERSON] et al. [68] observed that the use of silver nanocolloid concentrated at 0.2 to 1.6 mg\(\cdot\)L\({}^{-1}\) contributed to the inhibition of seed germination and lipase activity in germinating seeds and seedlings of _Brassica nigra_. In the present study, seeds soaked in silver nanocolloid showed a decrease in germination. [PERSON] et al.