Naslov
The effect of biostimulant and fertilizer on “low input” lettuce production

Autori
Dudaš, Slavica ; Šola, Ivana ; Sladonja, Barbara ; Erhatić, Renata ; Ban, Dean ; Poljuha, Danijela

Izvornik
Acta botanica Croatica (0365-0588) 75 (2016), 2; 253-259

Vrsta, podvrsta i kategorija rada
Radovi u časopisima, članak, znanstveni

Ključne riječi
Bio-algeen S-90; carotenoids; chlorophyll a and b; Megagreen; mineral content; non-heated plastic tunnel; vitamin C

Sažetak
Lettuce production in winter on the Adriatic coast, especially in a non-heated plastic tunnel, requires longer cultivation and is characterised by lower head mass and yield. In these conditions, the effect of biostimulant Bio-algeen S-90 and fertilizer Megagreen on the production of traditional winter lettuce cultivar ‘Four Seasons’ was tested. Both treatments showed a positive effect on the growth and total yield of winter lettuce, and decreased the share of non-marketable yield. Bio-algeen S-90 treatment increased the plant height by 61.5%, while foliar treatment with Megagreen by 60.9% compared to the control treatment. Equally, both treatments resulted in higher leaf numbers (47.7% for Bio-algeen S-90 and 37.2% for Megagreen). The head mass of lettuce treated with Bio-algeen S-90 and Megagreen was 30.3% and 25.0% higher than in the control treatment, respectively. Megagreen contributed more to chlorophyll and carotenoid content, while Bio-algeen S-90 elevated the amount of vitamin C and dry matter. The pH value of lettuce juice decreased after Bio-algeen S-90, while mineral content (N, P and K) did not differ between tested treatments. Lower nitrate content was detected after either treatment. The obtained results elucidate the effect of Bio-algeen S-90 and Megagreen on “low input” lettuce production.

Izvorni jezik
Engleski

Znanstvena područja
Kemija, Biologija

POVEZANOST RADA