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Effect of supplemental irrigation timing and potassium fertilizer on rain-fed fig in micro-catchment: yield and yield quality | ||
| Iran Agricultural Research | ||
| مقاله 4، دوره 39، شماره 2، اسفند 2020، صفحه 29-36 اصل مقاله (284.33 K) | ||
| نوع مقاله: Research Paper | ||
| شناسه دیجیتال (DOI): 10.22099/iar.2019.31927.1317 | ||
| نویسندگان | ||
| T Honar* 1؛ A Shabani2؛ M Abdolahipour-Haghighi3؛ N Dalir4؛ A. R Sepaskhah1؛ A. A Kamgar-Haghighi1؛ M Jafari5 | ||
| 11Department of Irrigation, College of Agriculture, Shiraz University, Shiraz, I. R. Iran 2Drought Research Center, Shiraz University, Shiraz, I.R. Iran | ||
| 2Department of Water Science and Engineering, College of Agriculture, Fasa University, Fasa, I. R. Iran | ||
| 3Department of Water Engineering, College of Aburaihan, University of Tehran, Tehran, I. R. Iran | ||
| 4Department of Soil Science, Tarbiat Modares University, Tehran, I. R. Iran | ||
| 5Fig Research Station, Fars Agricultural and Natural Resources Research and Education Center, Agricultural Research, Education and Extension Organization (AREEO), Estahban, I. R. Iran. | ||
| چکیده | ||
| In this study, the effect of supplemental irrigation timing (treatments included no supplemental irrigation; supplemental irrigation in middle of March; supplemental irrigation in early May; supplemental irrigation in early August; and two supplemental irrigation events in middle of March and early May) and potassium (K) application (treatments included no-fertilizer; 150 and 250 g fertilizer per tree applied by fertigation method and no-fertilizer; 1.5 and 3.0 kg fertilizer per 1000 L water used by foliar application) on yield and yield quality of rain-fed fig trees were studied at the Estahban fig orchards in Fars province, Iran, through a three-year experiment. Results showed that supplemental irrigation for fig resulted in an increase in yield and fruit size, and improved the fruit peel color. However, it decreased total soluble solid of fruit. For one irrigation during the growing season, irrigation in late winter (March) with 1250 L of applied water per tree was better than irrigation in spring (May) with a similar amount applied water which was used as the supplemental irrigation of rain-fed fig trees under severe drought conditions. Two irrigation in March and May with 1500 L and 1250 L of applied water per tree for each event for the first year and two subsequent years, respectively, was more effective on the yield and fruit quality than single irrigation due to higher applied irrigation water. Using 150 g K per tree by fertigation method or 3.0 kg/1000L foliar K fertilizer resulted in significant effect on the yield and yield quality of fig and improved them. | ||
| کلیدواژهها | ||
| Fig tree؛ supplemental irrigation timing؛ potassium fertilizer؛ yield؛ yield quality | ||
| مراجع | ||
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