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Effect of sowing date on growth, development and yield of catch crop sunflowers (Helianthus annuus L.)



Effect of sowing date on growth, development and yield of catch crop sunflowers (Helianthus annuus L.)



Rivista di Agronomia 25(1): 57-62



In field trials near Bari in 1988, 3 sunflowers cultivars were sown on (a) 10 June, (b) 20 June, (c) 30 June or (d) 10 July. Sunflowers matured earlier with later sowing dates: waxy seed maturity occurred 72, 78 and 77 d after sowing on 10 June in Isa, Topflor and Vulcano, resp., and 67, 74 d after sowing on 10 July. Max. LAI was attained 45-50 d after emergence and was lower in Isa than in Vulcano and Topflor. Max.

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