Claim · model-written summary
Increasing plant density decreased single-plant grain yield, and more plants per area compensated for this decrease.
- Taxon
- sunflower
Helianthus annuust0 - Treatment
- افزایش تراکمe5
- Outcome
- عملکرد دانه تک گیاهe5
- Direction
- کاهشe5
- Qualifier
- افزایش تعداد گیاهان در واحد سطح جبرانکنندۀ این کاهش بودe6
Not reportedComparator
Verbatim
t0“promising sunflower cultivars”
e5“با افزایش تراکم، عملکرد دانه تک گیاه کاهش یافت”
e6“امّا افزایش تعداد گیاهان در واحد سطح جبرانکنندۀ این کاهش بود”
Title
Davoud Omidi Nasab; Moosa Meskarbashee; Afrasiab Rahnama Ghahfarokhi DOAJ (DOAJ: Directory of Open Access Journals) 2021. doi:10.22069/ejcp.2021.18704.2392
Other claims from this paper (11)
- Observation Foliar nutrient complex and plant density significantly affected the measured sunflower traits except stem height.
- Observation The cultivar Shams had the maximum stem height, 198.36 cm.
- Intervention effect Foliar nutrient complex increased stem diameter, seed number per head and seed weight per head compared with the control.
- Intervention effect Foliar nutrient complex increased grain and oil yield compared with the control.
- Intervention effect Increasing plant density increased sunflower grain yield despite fewer and lighter seeds per head.
- Intervention effect Increasing plant density decreased the number and weight of seeds per head in sunflower.
- Mechanism Foliar nutrient complex increased sunflower grain yield by improving yield components and reducing competition at high densities.
- Observation The highest sunflower grain yield, 5.40 t/ha, was obtained for cultivar Felix at 11 plants/m2 with 1 kg/ha of foliar nutrient complex.
- Observation The highest sunflower oil yield, 2.64 t/ha, was obtained for cultivar Felix at 11 plants/m2 with 1 kg/ha of foliar nutrient complex.
- Mechanism Higher grain yield at 11 plants/m2 and better photosynthesis and grain filling during foliar spraying are suggested to have increased oil yield.
- Recommendation Foliar nutrient spraying is suggested to reduce intraspecific competition damage and increase yield of sunflower genotypes under Dezful conditions.