Published in Scientific Papers. Series A. Agronomy, Vol. LXII, Issue 1
Written by Dumitru MANOLE, Vasile JINGA, Marga GRĂDILĂ, Ioan RADU, Ștefan IORDACHE, Sergiu SOARE
In Dobrogea, about 200,000 ha of sunflower (Helianthus anuus L.) are cultivated, accounting for 20% of the total area from Romania. SC FIRST GRAIN SRL-Amzacea organized in 2018 two polyfactorial experiences in the Amzacea and Fantanele fields in order to improve the technology for the sunflower culture in Dobrogea under climate change. In this paper, the behavior of 5 sunflower hybrids was observed at the attack of the main pests (pathogens: Phomopsis helianthi Munt.-Cvet. et al., Sclerotinia sclerotiorum (Lib.) de Bary, Alternaria helianthi (Hansf.) Tubaki & Nishihara, and the parasite Orobanche cumana Wallr.) and 5 experimental models for weeds and parasite control. The phytosanitary status and the yields obtained in both localities are presented. The two phytosanitary treatments during the vegetation period controlled the pathogens attack. The four ways of herbicide tested have differentiated the attack of weeds and especially the broomrape attack. The highest yield was obtained for Katana hybrid when Listego Plus was applied at 4-6 leaves 4555 kg/ha and 4480 kg/ha in Amzacea and Fantanele, respectively
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