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- W4281715745 abstract "Research establishing optimal sowing dates and supplemental irrigation can help to alleviate the adverse effects of water deficit conditions on safflower agronomic performance in dry regions. The main objective of this study was to assess the effects of sowing date (early and late) and irrigation quantity on morphological, grain and oil traits in safflower during two growing seasons. Irrigation treatments were applied based on crop evapotranspiration (ETc) at the vegetative, flowering and capitulum/grain development stages. A rainfed treatment with no supplemental irrigation was considered as a control. The results showed that sowing date × irrigation × year interactions were not significant for several agronomic and oil traits. Evapotranspiration increased as the number of supplemental irrigations increased. Morphological, yield and oil traits and water use efficiency (WUE) were significantly higher in the early than in the late sowing treatment. Grain yield varied from 440 to 1460 kg ha–1 in early and from 340 to 1240 kg ha–1 in late sowing dates. Oil yield of early sown safflower varied between 188.56 and 338.84 kg ha–1 and between 24.4 and 308.82 kg ha–1 in the late sown safflower. The oil yield of one supplemental irrigation in the vegetative stage (I1V treatment) was significantly lower than oil yield from the treatments with two (I2VF, vegetative and flowering stages) and three supplemental irrigations (I3VFG, vegetative, flowering and capitulum/grain development stages) in early sowing. In late sowing, oil yield of I2VF was higher than other supplemental irrigation treatments. The range of saving irrigation water in one supplemental irrigation treatments was from 57.0% to 83.0% in early sowing treatment but with a corresponding 30.0 to 66.0% reduction in grain yield compared with full irrigation treatment. For most of the tested traits, irrigation in the vegetative and especially flowering stages improved safflower yield and WUE in early sowing of safflower and thus can be an alternative irrigation strategy for water conservation in regions impacted by drought. This article is protected by copyright. All rights reserved" @default.
- W4281715745 created "2022-06-13" @default.
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- W4281715745 date "2022-07-26" @default.
- W4281715745 modified "2023-09-27" @default.
- W4281715745 title "Oil and seed yields affected by sowing dates and irrigation regimes applied in growth phenological stages of safflower" @default.
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- W4281715745 doi "https://doi.org/10.1002/csc2.20797" @default.
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