Response of sunflower (Helianthus annuus L.) to sowing date and plant density under Mediterranean conditions

Barros, José Calado; Carvalho, Mário de; Basch, Gottlieb

doi:10.1016/j.eja.2003.10.005

Cited by 64 publications

(51 citation statements)

References 13 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Bassu et al [17], Turner [18] explained that sowing dates could help to have the crop growing period coincide with the concentration of precipitation, improve water-use efficiency, and offer an escape from frost risk. The experiments of sowing dates have been carried out for various plants including wheat (Triticum aestivum L.) by Spink et al [19], Yang et al [20], and Conry [21], maize (Zea mays L.) by Cirilo and Andrade [22], Otegui et al [23], and sunflower (Helianthus annuus L.) by Barros et al [24], etc. These studies mainly considered the effects of sowing dates on the thermal time and reported that a delay of the sowing date significantly reduced grain yield due to the decreases in the amount of heat accumulated during the growing season.…”

Section: Introductionmentioning

confidence: 99%

Adjusting Sowing Dates Improved Potato Adaptation to Climate Change in Semiarid Region, China

Yang

Pan

et al. 2017

Sustainability

View full text Add to dashboard Cite

Abstract:Yields of rainfed potato (Solanum tuberosum L.) in China's semiarid region are restricted by limited precipitation. Climate change could cause significant fluctuation in the rain-fed agricultural production due to the spatiotemporal changes in temperature and precipitation. As adjusting sowing dates proved to be an important management technique for improving grain yields, we examined how potato production can be improved by altering planting date in China's semiarid region, thus improving potato adaptation to climate change. Field trials with five target sowing dates (from late April to early June) were carried out in Inner Mongolia, China during four growing seasons (2010)(2011)(2012)(2013), and the effects of sowing dates on potato development, yield and water use efficiency (WUE) were estimated. Results showed that although delayed sowing shortened the duration of potato growth period, non-significant thermal time differences after flowering stage was found among the treatments. However, greater precipitation was shown in three intermediate treatments.Potato yield was significantly affected by sowing dates, and intermediate sowing dates showed greater yield compared to the earlier or later sowing dates. Delayed sowing dates significantly improved WUE in a drier year. As for a normal year, earlier sowing dates promoted WUE because of less water consumption, but these increases came at the cost of reducing yields. Under the current climate conditions in the study area, the flexible sowing time for potato was determined as from early May to early June, and optimum sowing time was between 10 May and 27 May. In conclusion, adjusting sowing date affected duration, thermal time, and precipitation over potato growth period, and the optimal sowing date exhibited higher yield by obtaining greater precipitation, which could improve potato adaption to climate change.

show abstract

Section: Introductionmentioning

confidence: 99%

Adjusting Sowing Dates Improved Potato Adaptation to Climate Change in Semiarid Region, China

Yang

Pan

et al. 2017

Sustainability

View full text Add to dashboard Cite

show abstract

“…Optimization of sowing date and planting density can also be used to manage various abiotic stresses in the field (Bange et al 1998;de la Vega & Hall 2002;Flagella et al 2002;Barros et al 2004). Early sowing dates with medium plant densities have been recommended in general to avoid the terminal phase drought or heat stress at the grainfilling stage (Bange et al 1998;de la Vega & Hall 2002).…”

Section: Infield Management Of Heat Stressmentioning

confidence: 99%

Handling sunflower (Helianthus annuusL.) populations under heat stress

Kalyar

Rauf

Silva

et al. 2013

Archives of Agronomy and Soil Science

View full text Add to dashboard Cite

Sustainable sunflower yield is under threat by a significant rise in global temperatures. Therefore, the development of a heat-resistant sunflower breeding population or hybrid is important for sustainable yield under high temperatures. Although there are a significant number of studies aimed at understanding the mechanism of heat resistance, only few direct approaches were made to improve heat resistance in sunflower. When breeding for heat resistance, the selection criteria are important. A desirable screening criterion should be rapid, highly heritable, and allow for the discrimination of resistant and susceptible ecotypes before reproductive maturity so that undesirable plants can be eliminated. In contrast, destructive selection criteria are not applicable for a segregating population. On the basis of an extensive review of data and experimentation, traits such as leaf and head orientation at the time of anthesis are proposed for practical utilization of sunflower heat-resistant breeding. These traits could be utilized as markers linked with heat avoidance. The traits are simply inherited, non-destructive, non-laborious, and show no impact of the environment and are independent of genotype × environment.

show abstract

“…Our results showed that the best correlation among multi-spectral data and crop yield was at the earlier season (mid-May). At this date, factors that affect the crop emergence and development, such as establishment pattern, sowing errors, air conditions (temperature and relative humidity), rainfall and soil humidity (Barros et al 2004;Botella-Miralles et al 1997;Fereres et al 1983) produced heterogeneous areas within the fields that might be more feasibly detected by the airborne imagery at this initial phase of crop development than later. Areas with vigorously growing vegetation typically show a higher reflectance in NIR than in the visible regions (Pinter et al 2003), resulting in high NDVI values which, at mid-May, mostly corresponded to high-yielding zones.…”

Section: Resultsmentioning

confidence: 98%

Sunflower yield related to multi-temporal aerial photography, land elevation and weed infestation

et al. 2009

View full text Add to dashboard Cite

Response of sunflower (Helianthus annuus L.) to sowing date and plant density under Mediterranean conditions

Cited by 64 publications

References 13 publications

Adjusting Sowing Dates Improved Potato Adaptation to Climate Change in Semiarid Region, China

Adjusting Sowing Dates Improved Potato Adaptation to Climate Change in Semiarid Region, China

Handling sunflower (Helianthus annuusL.) populations under heat stress

Sunflower yield related to multi-temporal aerial photography, land elevation and weed infestation

Contact Info

Product

Resources

About