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Table 5 Water stress rates and salicylic acid concentrations influence on weight, juice volume, TSS, acidity, TSS/acid ratio and ascorbic acid of Washington navel orange fruits (2021–2022 seasons)

From: Effect of foliar application of different concentrations of salicylic acid on Washington navel orange trees under water stress

 

Fruit weight (g)

Juice volume (cm3)

TSS (%)

Acidity (%)

TSS/acid ratio

Ascorbic acid (mg/100 ml)

First season (2021)

ETc 100%

327.59a

184.64a

10.96c

0.77a

14.27c

37.05c

ETc 75%

303.91b

175.00b

11.78b

0.70b

16.73b

41.78b

ETc 50%

289.32c

166.85c

12.77a

0.69c

18.54a

45.74a

SA 0 ppm

297.31a

171.73a

11.49a

0.70a

16.49d

39.91d

SA 250 ppm

305.91a

173.93a

11.66a

0.73a

16.02c

40.97c

SA 500 ppm

310.66a

177.15a

11.96a

0.73a

16.50b

41.91b

SA 750 ppm

313.87a

179.18a

12.23a

0.73a

16.71a

43.29a

ETc 100% × SA 0 ppm

308.27d

180.45c

10.74d

0.72a

14.91e

35.85a

ETc 100% × SA 250 ppm

328.37b

183.46b

10.80d

0.78a

13.83f

36.02a

ETc 100% × SA 500 ppm

336.03a

186.53a

10.94d

0.79a

13.90f

37.23a

ETc 100% × SA 750 ppm

337.69a

188.12a

11.37c

0.78a

14.52e

39.10a

ETc 75% × SA 0 ppm

298.01d

170.67e

11.31c

0.68a

16.53d

39.08a

ETc 75% × SA 250 ppm

301.69d

172.19e

11.69c

0.70a

16.63d

41.78a

ETc 75% × SA 500 ppm

304.29d

176.44d

11.95b

0.70a

17.00d

42.55a

ETc 75% × SA 750 ppm

311.63c

180.71c

12.17b

0.73a

16.74d

43.69a

ETc 50% × SA 0 ppm

285.64d

164.07e

12.43b

0.69a

18.13b

44.81a

ETc 50% × SA 250 ppm

287.68d

166.12e

12.50b

0.70a

17.85c

45.11a

ETc 50% × SA 500 ppm

291.66d

168.50e

13.00a

0.69a

18.96a

45.96a

ETc 50% × SA 750 ppm

292.28d

168.71e

13.15a

0.69a

19.17a

47.08a

Second season (2022)

ETc 100%

328.92a

182.53a

11.49c

0.77a

14.93c

38.91c

ETc 75%

310.86b

171.21b

12.43b

0.75b

16.50b

42.74b

ETc 50%

292.56c

161.32c

13.30a

0.74c

18.02a

48.95a

SA 0 ppm

300.98a

167.02a

12.04a

0.75a

16.12d

41.61d

SA 250 ppm

308.12a

169.82a

12.23a

0.76a

16.20c

42.30c

SA 500 ppm

315.30a

173.81a

12.51a

0.76a

16.55b

44.22b

SA 750 ppm

318.73a

176.08a

12.83a

0.76a

16.97a

46.01a

ETc 100% × SA 0 ppm

315.42c

176.50c

11.15d

0.75a

14.91g

37.34a

ETc 100% × SA 250 ppm

325.86b

180.44b

11.21d

0.77a

14.51g

37.88a

ETc 100% × SA 500 ppm

336.33a

185.58a

11.60c

0.78a

14.89g

39.46a

ETc 100% × SA 750 ppm

338.09a

187.58a

12.01b

0.78a

15.38f

40.96a

ETc 75% × SA 0 ppm

306.79c

165.83d

11.94c

0.76a

15.80f

40.72a

ETc 75% × SA 250 ppm

308.66c

168.41d

12.40b

0.76a

16.38e

41.89a

ETc 75% × SA 500 ppm

311.28c

173.02c

12.58b

0.75a

16.72e

43.40a

ETc 75% × SA 750 ppm

316.73c

177.57c

12.78b

0.75a

17.15d

44.96a

ETc 50% × SA 0 ppm

280.73e

158.73d

13.03a

0.74a

17.71c

46.79a

ETc 50% × SA 250 ppm

289.86d

160.62d

13.09a

0.74a

17.77c

47.11a

ETc 50% × SA 500 ppm

298.28c

162.84d

13.36a

0.74a

18.11b

49.78a

ETc 50% × SA 750 ppm

301.36c

163.08d

13.70a

0.74a

18.51a

52.13a

  1. ETc, estimated crop water requirement; SA, salicylic acid
  2. Mean followed by the same letter/s within each column is not significantly different from each other at the 0.5% level