Abstract “Paintings fade like flowers”: van Gogh’s prediction on the impact of age paintings came true for most his paintings. We have studied consequences this aging Sunflowers in a vase with yellow background series, namely its original, F454, currently London, and two replicates, F457, Tokyo, F458, Amsterdam, which Gogh painted using original as model. The flower renditions those faded turne...

Blackbirds, such as red-winged blackbirds (Agelaius phoeniceus), are notorious agricultural pests and damage crops at multiple stages of growth. Our aim was to test a novel deterrent, the use sound designed mask communication among birds (termed “Sonic Net”), deter (Icteridae) from target areas maturing sunflower crops. The Sonic Net masks species by delivering “pink noise” that overlaps with f...

In the USA, cultivated sunflower (Helianthus annuus) is often sympatric with wild H. annuus, which is an agricultural weed that grows along roadsides and in other disturbed sites. We found that crop-to-wild gene flow was common (~5-40% hybrids) when wild plants occurred within <1,000 m of the crop, and crop-specific genetic markers persisted in wild populations for many generations. Crop-to-wil...

Crop coefficients (Kc) are important for the development of irrigation schedules, but few studies on Kc focus on saline soils. To propose the growth-stage-specific Kc values for sunflowers in saline soils, a two-year micro-plot experiment was conducted in Yichang Experimental Station, Hetao Irrigation District. Four salinity levels including non-salinized (ECe = 3.4–4.1 dS·m–1), low (ECe = 5.5–...

Although the impact of Orobanche cumana Wallr. on sunflower (Helianthus annuus L.) becomes evident with emergence of broomrape shoots aboveground, infection occurs early after sowing, the host physiology being altered during underground parasite stages. Genetic resistance is the most effective control method and one of the main goals of sunflower breeding programmes. Blue-green fluorescence (BG...

Abstract The former gold mining land is a that has deficient fertility level and contained heavy metals such as mercury (Hg). purpose of this research to study the role biochar, manure, clay sunflowers in reducing (Hg) restoration land. researcher used random design method with groups 3 treatments repetitions. treatment consists 0 ton/ha, 10 20 ton/ha clay. result shows effect reviving chemical...

Various support and self-help groups for people living with HIV and their families have developed in Viet Nam in recent years. This paper reports on a case study of Sunflowers, the first support group for HIV positive mothers in Hanoi, begun in 2004, and a sister group begun in 2005 in Thai Nguyen province. From April 2004 to early 2007, we carried out semi-structured interviews with 275 health...

This citizen science study evaluates the occurrence of Fibonacci structure in the spirals of sunflower (Helianthus annuus) seedheads. This phenomenon has competing biomathematical explanations, and our core premise is that observation of both Fibonacci and non-Fibonacci structure is informative for challenging such models. We collected data on 657 sunflowers. In our most reliable data subset, w...