Planting dates and irrigation regimes influence on growth and yield of quinoa (Chenopodium quinoa) in a semi-arid area
سال انتشار: 1401
نوع سند: مقاله ژورنالی
زبان: انگلیسی
مشاهده: 100
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شناسه ملی سند علمی:
JR_IAR-40-2_012
تاریخ نمایه سازی: 20 تیر 1401
چکیده مقاله:
Planting crops with less vulnerability to environmental stresses, especially drought in semi-arid areas, can remarkably improve irrigation water use efficiency (IWUE). Therefore, in this study, planting quinoa (Chenopodium quinoa) under different irrigation regimes and planting dates was investigated. Irrigation regimes included full irrigation (FI) and ۵۰% of full irrigation (۰.۵FI), where planting dates consisted of six planting dates in the early spring and six planting dates in the early fall. Results indicated that the highest grain yield, dry matter, root dry weight, leaf area index, harvest index, and yield components were obtained in early spring cultivation on February ۱۹ and in the early fall on August ۲۳ planting dates. The maximum leaf area index on the planting date of August ۲۳ was ۲۱% higher than that on the planting date of February ۱۹ under FI conditions. The highest harvest index was ۰.۳۲ in FI and the planting date of August ۲۳. The planting date of August ۲۳ increased water use efficiency for grain (IWUEG) by ۳۰% compared to planting on February ۱۹ under FI conditions. There was no significant difference in specific root length between planting dates on February ۱۹ and August ۲۳. Applying ۰.۵FI compared to FI increased root dry weight to shoot dry weight ratio to ۱۴۲% on the planting date of August ۲۳. Generally, the planting date of August ۲۳ is suggested as the best planting time for quinoa in the study area with no water scarcity, while planting on February ۱۹ is recommended in the conditions of scarce water resources by applying ۰.۵FI.
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نویسندگان
Rezvan Talebnejad
Water Engineering Department, School of Agriculture, Shiraz University, Shiraz, I. R. and Drought Research Center, School of Agriculture, Shiraz University, Shiraz, I. R. Iran
Maryam Bahrami
Water Engineering Department, School of Agriculture, Shiraz University, Shiraz, I. R. Iran
Ali Reza Sepaskhah
Water Engineering Department, School of Agriculture, Shiraz University, Shiraz, I. R. Iran and Drought Research Center, School of Agriculture, Shiraz University, Shiraz, I. R. Iran
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