I. Objective
To investigate the effects of yeast peptide preparation on corn growth and herbicide damage alleviation through seed dressing and foliar spraying.
II. Time and Location
- Time: July 11, 2024
- Location: LYS Eco Bioassay Laboratory
III. Materials and Methods
- Test Soil/Medium: Nutrient soil, seed coating agent (24% benzyl ether·fludioxonil·thiamethoxam), yeast peptide, competitor product, and herbicide (fomesafen).
- Test Crop: Corn
- Experimental Design and Treatments:
- The experiment consists of 7 treatment groups, with 90 corn seeds per group.
- Treatment arrangement:
- Control Group: No. 1, No. 2, No. 5
- Experimental Group: No. 3, No. 6
- Competitor Group: No. 4, No. 7
IV. Investigation Indicators, Methods, and Result Analysis
1.Record Germination Status of Corn in Different Groups:
2.Result Analysis (Based on Figure 2 and Table 2 Data):
- Compared to the No. 1 control group, the No. 3 treatment group showed a significant difference in germination rate, with faster germination speed and rapid shoot growth. No significant differences were observed between the No. 2, No. 4, and No. 1 treatment groups, indicating no clear promotion or inhibition.
- In the presence of soybean herbicide (fomesafen), compared to the No. 5 control group, the No. 6 treatment group exhibited a significant difference in germination rate, with faster germination speed and rapid shoot growth. No significant differences were observed between the No. 7 and No. 1 treatment groups, indicating no clear promotion or inhibition.
- Compared to the No. 6 experimental group, the No. 3 treatment group showed a significant difference in germination rate, with faster germination speed and rapid shoot growth. No significant differences were observed between the No. 2 and No. 5 treatment groups or between the No. 4 and No. 7 treatment groups.
- Fresh Weight Comparison:
- No. 3 showed a highly significant increase in fresh weight vs. No. 1, with notable corn weight gain.
- No. 2 and No. 4 had no significant difference vs. No. 1, with less pronounced growth promotion than No. 3.
- Stem Length Comparison:
- No. 3 exhibited the most significant stem length increase vs. No. 1, demonstrating strong growth promotion.
- No. 4 showed positive growth promotion after the second leaf emergence.
- Lodging and Growth Vigor:
- Lodging occurred in No. 1 and No. 2, while No. 3 and No. 4 showed no lodging and maintained vigorous growth.
V. Analysis of Experimental Conclusions
Germination Rate Analysis:
- The best-performing group in terms of germination rate was No. 3 (Water:Peptide:Seed Coating Agent:Seed = 6:1:200:1000). The peptide-to-seed ratio of 1:1000 positively accelerated seed germination, providing favorable conditions for subsequent growth.
- No. 4 (peptide-to-seed ratio of 1:1000) also promoted seed germination but was less effective than No. 3.
- No. 2 showed no significant promotion of seed germination.
Growth and Fresh Weight Analysis:
- No. 3 (peptide-to-seed ratio of 1:1000 + 1000x foliar spray) demonstrated the fastest weight accumulation and the best growth performance.
- No. 4 (peptide-to-seed ratio of 1:1000 + 1000x foliar spray) followed, showing moderate growth promotion.
- No. 2 had no significant growth-promoting effect.
Lodging Observation:
Lodging occurred in No. 1 and No. 2, indicating weaker root systems compared to No. 3 and No. 4, which exhibited vigorous growth without lodging.
Herbicide Impact Analysis:
Observations of No. 5, No. 6, and No. 7 revealed that the yeast peptide treatment in No. 6 significantly alleviated herbicide (fomesafen) damage in corn.
Comprehensive Analysis:
Under soil cultivation conditions, the optimal seed treatment and foliar spray combination was No. 3, with the method: Water:Peptide:Seed Coating Agent:Seed = 6:1:200:1000 and 1000x foliar spray.