Figure 1.

Effect of vermicompost and conventional manure applications on vitamin C, total phenolic and colour parameters in the cultivation of ‘Orantes’ F1 and ‘Robredo’ F1 cultivars in different locations
| Quality parameters | Fertilizers | Cultivars/locations/applications | |||||||
|---|---|---|---|---|---|---|---|---|---|
| Adiyaman | Pozanti | ||||||||
| Orantes | Robredo | Orantes | Robredo | ||||||
| First year | Second year | First year | Second year | First year | Second year | First year | Second year | ||
| Vitamin C (mg · 100 g−1) | Vermicompost | 1044.93 c | 974.46 c | 1249.06 b | 1257.83 ab | 115.00 f | 212.33 d | 113.66 f | 145.00 d |
| Conventional fertilizer | 1392.13 a | 1128.93 bc | 951.60 d | 1418.53 a | 172.33 e | 195.00 d | 112.66 f | 188.66 d | |
| LSD0.05 = 18.62 for first year***; NS for second year | |||||||||
| Total phenolic (mg · 100 g−1) | Vermicompost | 364.46 b | 315.82 a | 323.67 b | 347.72 a | 155.61 c | 116.64 bc | 136.64 c | 108.45 c |
| Conventional fertilizer | 434.11 a | 358.48 a | 331.81 b | 311.51 a | 163.05 c | 165.61 b | 136.64 c | 156.38 bc | |
| LSD0.05 = NS for first year; LSD0.05 = NS for second year | |||||||||
| Colour parameter chroma |(C) | Vermicompost | 125.96 ab | 127.23 b | 126.37 ab | 130.62 b | 92.37 d | 100.99 d | 95.98 d | 100.23 d |
| Conventional fertilizer | 129.85 a | 128.71 b | 120.71 b | 145.84 a | 99.51 cd | 106.35 c | 106.35 c | 110.31 c | |
| LSD0.05 = NS for first year; LSD0.05 = NS for second year | |||||||||
| Colour parameter (h°) | Vermicompost | 8.84 cd | 10.93 b | 7.40 de | 8.96 c | 9.71 bc | 10.32 bc | 12.51 a | 10.37 bc |
| Conventional fertilizer | 4.52 f | 9.41 c | 6.65 ef | 3.79 d | 5.54 ef | 9.08 c | 11.50 ab | 12.77 a | |
| LSD0.05 = NS for first year; LSD0.05 = NS for second year | |||||||||
Effects of vermicompost and conventional fertilization on nutrient elements in the cultivation of Orantes and Robredo cultivars in different locations_
| Plant nutrient contents | Fertilizers | Varieties/locations/applications | |||||||
|---|---|---|---|---|---|---|---|---|---|
| Adiyaman | Pozanti | ||||||||
| Orantes | Robredo | Orantes | Robredo | ||||||
| First year | Second year | First year | Second year | First year | Second year | First year | Second year | ||
| N (%) | Vermicompost | 5.50 c | 5.50 b*** | 3.97 e | 5.08 c | 4.04 e | 4.15 e | 5.48 c | 5.11 bc |
| Conventional fertilizer | 6.36 b | 6.53 a | 4.42 de | 5.44 bc | 4.82 d | 4.65 d | 7.04 a | 6.74 a | |
| LSD0.05 = NS for first year; LSD0.05 = 0.36 for second year*** | |||||||||
| K (%) | Vermicompost | 26707.98 b | 27862.72 d | 18859.24 c | 31279.59 b | 29355.80 a | 34739.57 a | 27619.04 ab | 35887.03 a |
| Conventional fertilizer | 20646.86 c | 28125.41 cd | 28129.27 ab | 30425.45 bcd | 26089.09 b | 31067.29 bc | 29746.07 a | 31508.28 b | |
| LSD0.05 = 2485.77 for first year***; LSD0.05 = NS for second year | |||||||||
| Fe (ppm) | Vermicompost | 44426.70 ef | 82800.23 b | 34616.82 f | 65180.09 b | 79345.11 c | 64633.04 b | 120686.83 a | 115300.63 b |
| Conventional fertilizer | 55665.12 de | 66258.16 b | 53745.76 e | 311217.72 a | 69281.08 cd | 55887.57 b | 101680.64 b | 116183.29 b | |
| LSD0.05 = NS for first year; LSD0.05 = NS for second year | |||||||||
| Zn (ppm) | Vermicompost | 39989.98 bc | 34187.30 b | 33587.70 cd | 28548.90 c | 38632.63 bc | 37312.20 b | 51124.68 ab | 52323.36 a |
| Conventional fertilizer | 35845.47 cd | 27718.59 c | 23872.60 d | 34083.73 b | 46698.52 abc | 26375.05 c | 58923.15 a | 51639.39 a | |
| LSD0.05 = NS for first year; LSD0.05 = NS for second year | |||||||||
| Mn (ppm) | Vermicompost | 2052.54 ef | 22682.51 b | 18749.85 f | 20686.95 b | 32497.24 b | 23819.90 b | 36774.72 a | 29095.14 a |
| Conventional fertilizer | 19278.51 f | 217551.14 b | 22441.96 e | 22217.85 b | 25842.62 d | 23447.35 b | 28358.24 c | 24896.91 ab | |
| LSD0.05 = 2315.69 for first year**; LSD0.05 = NS for second year | |||||||||
Effects of vermicompost and conventional fertilizer applications on head width-height (cm) and SPAD reading in the cultivation of ‘Orantes’ F1 and ‘Robredo’ F1 broccoli cultivars in different locations_
| Plant growth parameters | Fertilizers | Cultivars/locations/applications | |||||||
|---|---|---|---|---|---|---|---|---|---|
| Adiyaman | Pozanti | ||||||||
| Orantes | Robredo | Orantes | Robredo | ||||||
| First year | Second year | First year | Second year | First year | Second year | First year | Second year | ||
| Head width (cm) | Vermicompost | 8.96 e | 12.06 ab | 9.90 d | 11.66 b | 10.95 c | 12.66 ab | 13.01 a | 13.05 a |
| LSD0.05 = NS for first year; LSD0.05 = NS for second year | |||||||||
| Head height (cm) | Vermicompost | 12.10 e | 14.26 a | 11.83 e | 13.86 a | 14.01 bcd | 14.42 a | 14.76 ab | 14.47 a |
| LSD0.05 = NS for first year; LSD0.05 = NS for second year | |||||||||
| SPAD reading | Vermicompost | 55.20 e | 82.96 a | 73.33 c | 74.10 c | 79.48 b | 77.22 bc | 71.86 cd | 69.76 d |
| LSD0.05 = 0.79 for first year***; LSD0.05 = 1.15 for second year** | |||||||||
Climate data for Adıyaman and Pozantı during broccoli cultivation in 2022–2023_
| Year | Location | Average temperature (°C) | Average humidity (%) | Total rainfall (mm)* |
|---|---|---|---|---|
| 2022 | Pozantı | 11.78 | 55.92 | 186 |
| Adıyaman | 18.07 | 46.22 | 456 | |
| 2023 | Pozantı | 12.32 | 58.60 | 155 |
| Adıyaman | 18.90 | 45.62 | 609 |
Soil analysis of Adıyaman and Pozantı locations_
| Parameters | Adıyaman | Pozantı |
|---|---|---|
| Texture | Clay | Clay-loam |
| CaCO3 (%) | 2.05 | 6.85 |
| pH | 7.60 | 7.43 |
| EC (μS · cm−1) | 1158.0 | 0.045 |
| Organic matter (%) | 1.42 | 1.07 |
| P (kg · ha−1) | 14.01 | 18.5 |
| K2O (kg · ha−1) | 51.26 | 42.42 |
| Fe (mg · kg−1) | 5.5 | 4.9 |
| Zn (mg · kg−1) | 8.0 | 5.8 |
| Cu (mg · kg−1) | 5.2 | 3.6 |
| Mn (mg · kg−1) | 10.3 | 1.5 |
Yield parameters of vermicompost and conventional fertilizer applications in the cultivation of ‘Orantes’ F1 and ‘Robredo’ F1 broccoli cultivars in different locations_
| Plant yield parameters | Fertilizers | Cultivars/locations/applications | |||||||
|---|---|---|---|---|---|---|---|---|---|
| Adiyaman | Pozanti | ||||||||
| Orantes | Robredo | Orantes | Robredo | ||||||
| First year | Second year | First year | Second year | First year | Second year | First year | Second year | ||
| Average head weight (g · plot−1) | Vermicompost | 110.70 c | 190.63 de | 185.71 b | 238.09 bc | 202.50 b | 232.61 bcd | 195.66 b | 187.00 e |
| LSD0.05 = NS for first year; LSD0.05 = 42.91 for second year** | |||||||||
| Total yield (kg · plot−1) | Vermicompost | 1.69 cd | 1.96 ab | 2.54 ab | 2.14 ab | 1.21 cd | 0.90 c | 1.73 cd | 1.38 bc |
| LSD0.05 = 0.63 for first year*; LSD0.05 = NS for second year | |||||||||
| Yieldt (kg · da−1) | Vermicompostt | 753.88 de | 873.92 b | 1130.17 b | 953.31 b | 683.97 e | 1327.65 a | 948.43 c | 788.61 bc |
| LSD0.05 = 149.43 for first year***; LSD0.05 = 334.33 for second year* | |||||||||