Volume 11, Issue 49 (vol. 11, no. 48 2022)
2022, 11(49): 63-74 |
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sadeghifard M, Malakouti M J, Jalali V R, Zare A A. Investigation of the role of Potassium Sulfate solution containing zinc chelate in increasing yield and decreasing water consumption in wheat in Kahnooj region (Kerman). Plant Process and Function 2022; 11 (49) : 7
URL: http://jispp.iut.ac.ir/article-1-1496-en.html
URL: http://jispp.iut.ac.ir/article-1-1496-en.html
1- Department of Soil Sciences, College of Agriculture, University of Tarbiat Modares, 14115- 336, Tehran, Iran
2- Department of Soil Sciences, College of Agriculture, University of Tarbiat Modares, 14115- 336, Tehran, Iran ,mjmalakouti@modares.ac.ir
3- Associate Professor, Department of Nature Engineering, Shirvan Faculty of Agriculture, University of Bojnord, Iran
4- Assistant Professor, Soil and Water Research Department, Safiabad Agricultural and Natural Resources Research and Education Center, AREEO, Dezful, Iran.
2- Department of Soil Sciences, College of Agriculture, University of Tarbiat Modares, 14115- 336, Tehran, Iran ,
3- Associate Professor, Department of Nature Engineering, Shirvan Faculty of Agriculture, University of Bojnord, Iran
4- Assistant Professor, Soil and Water Research Department, Safiabad Agricultural and Natural Resources Research and Education Center, AREEO, Dezful, Iran.
Abstract: (1263 Views)
To investigate the role of potassium and zinc fertilizers in increasing yield and reducing the water consumption of wheat (Triticum aestivum L.), a field experiment was conducted in the form of a randomized complete block design with five treatments and three replications in November 2017 in Kahnooj city in Kerman province. Experimental treatments in this study included; The first treatment: Control (consumption of all fertilizers except potassium based on the results of soil analysis with 7 irrigations); The second treatment: The conventional fertilizing by the local farmers (NP) with 7 irrigations; the third treatment: First treatment + application of potassium sulfate (SOP) before planting, with 7 irrigations; Fourth treatment: First treatment + application of 33% sulfate-potassium (SOP) before planting and 67% of the remaining source of soluble potassium sulfate (SSOP) as a foliar application with 7 irrigations; Fifth treatment: The first treatment + application of 33% of sulfate-potassium (SOP) before planting and 67% of the remaining source of the sulfate-potassium solution containing chelate (SSOP + Zn-EDTA) as foliar application and irrigation in 5 times. The results showed that A) application of potassium and zinc fertilizers had a significant effect on yield, protein content, phosphorus, potassium, and zinc concentrations and also the molar ratio of phytic acid to zinc (unfavorable nutritional index) Zn) in grain as well as water and potassium use efficiency. B). While the yield and percentage of protein in the grain in the control treatment were 4648 kg/ha and 11.68%, respectively, in the second, third, fourth, and fifth treatments were 4077 and 8.57, 5402 and 69, 12.12, 6137 and 13.62, increased 6022 kg/ha and 13.85%, respectively. C). Unfavorable nutritional index (molar ratio of phytic acid to zinc) - (PA/Zn) in wheat grain in the control treatment was 46, while this ratio in the second, third, fourth, and fifth treatments was 74, 33, 23, respectively. D). While the water use efficiency in the control was equal to 0.62 kg/m3, the values in the second, third, fourth, and fifth treatments were 0.54, 0.72, 0.82, and 1.11 kg/m3, respectively. The efficiency of potassium fertilizer in the third treatment was 2.51 kg/kg. In the fourth treatment this value improved to 4.96, and in the fifth treatment to 4.58 kg/kg. E). Despite reducing water consumption from 7560 cubic meters in all four treatments to 5400 cubic meters in the fifth treatment, the yield in the fifth treatment compared to the control treatment had a 31% increase yield, which was significant at the percent probability level. Considering the above results, it was concluded that in soils where the concentration of potassium and zinc was less than the critical limit, it was better to use potassium and zinc fertilizers in several stages.
Article number: 7
Type of Study: Applicable |
Subject:
Droughts Stress
Received: 2022/01/6 | Accepted: 2022/06/19 | Published: 2022/09/26
Received: 2022/01/6 | Accepted: 2022/06/19 | Published: 2022/09/26
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