Volume 11, Issue 48 (vol. 11, no. 48 2022)
2022, 11(48): 229-248 |
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Seilsepour M. The effects of humic and salicylic acid application on yield, fiber quality and nutrient concentration in leaves of cotton var. Khordad. Plant Process and Function 2022; 11 (48) : 15
URL: http://jispp.iut.ac.ir/article-1-1599-en.html
URL: http://jispp.iut.ac.ir/article-1-1599-en.html
Greenhouse Cultivation Research Department, Tehran Agricultural and Natural Resources Research and Education Center, AREEO, Varamin, Iran , mseilsep@yahoo.com
Abstract: (1277 Views)
In order to investigate the effect of application of humic and salicylic acid on quantitative and qualitative characteristics of cotton and nutrient concentrations in cotton leaves of Khordad cultivar under salinity stress (soil salinity 7.65 and water salinity 10.86 dS/m), a factorial field experiment was conducted in 2018 in the form of randomized complete blocks with 9 treatments on a farm in the south of Varamin. Effect of humic acid at three levels (zero, seed and 10 liters per hectare as irrigation fertilizer) and salicylic acid at three levels (zero, 2 and 4 mmol as foliar application) on quantitative and qualitative traits Cotton of Khordad cultivar was examined. The effect of humic acid, salicylic acid and the effect of their interaction on the yield seedcotton and fibers and yield components, concentration of nutrients and leaf chlorophyll and qualitative characteristics of fibers including length, strength and fineness were significant (P <0.01). The highest yield of cotton seed at the rate of 4409 kg/ha was obtained from the combined application of humic acid as seedcoated and salicylic acid as a foliar application at a concentration of 4 mM, which was 49% higher than the control treatment. Application of humic and salicylic acid improved the quality properties of the fibers, so that the maximum average length of cotton fibers was 31 mm from the combined application of humic acid as seedcoated and salicylic acid. The form of foliar application was obtained with a concentration of 4 mM, which was a 10.7% increase in length compared to the control treatment. The effect of humic and salicylic acid interaction on the mean concentrations of nitrogen, phosphorus, potassium, calcium, magnesium of cotton leaves was significant. In this case, the highest mean concentrations of nitrogen, phosphorus, potassium, calcium and magnesium of cotton leaves were 3.9, 0.43, 3.9, 1.6 and 0.99 %, respectively, from the combined application of humic acid as seedcoated and salicylic acid as foliar application at a concentration of four per thousand, which compared to the control treatment for nitrogen, phosphorus, potassium, calcium and magnesium 44, 53, 62, 60 and 12 % respectively was higher. Based on the results, application of humic acid in the form of seedcoated and salicylic acid as foliar application on saline conditions, modulated the effects of salinity stress and increased the yield cotton seed and improved the qualitative characteristics of fibers.
Article number: 15
Type of Study: Research |
Subject:
Salt Stress
Received: 2021/09/25 | Accepted: 2022/01/4 | Published: 2022/05/23
Received: 2021/09/25 | Accepted: 2022/01/4 | Published: 2022/05/23
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