Naslov
Spring crops of lettuce, carrot and pak-choi grown under direct covers
(Spring crops of lettuce, carrot and pak-choi grown under direct covers.)

Autori
Borošić, Josip ; Žutić, Ivanka ; Heblin, Dominka

Vrsta, podvrsta i kategorija rada
Radovi u zbornicima skupova, cjeloviti rad (in extenso), znanstveni

Izvornik
Proceedings of the 13th International Congress on Plastics in Agriculture (CIPA) / - Verona : Comité International des Plastiques en Agriculure, 1994, 98-120

Skup
13th International Congress on Plastics in Agriculture (CIPA)

Mjesto i datum
Verona, Italija, 08.03.1994. - 11.03.1994

Vrsta sudjelovanja
Predavanje

Vrsta recenzije
Međunarodna recenzija

Ključne riječi
polyethylene film ; unwoven materials ; growth method ; yield

Sažetak
Lettuce, carrot and pak-choi crops were directly covered during the early spring growth phase using perforated polyethylene film, and 3 unwoven materials: Agryl P17, Agratex and Retex. Lettuce cultivars with direct cover at the beginning of March produced 18 - 28% higher yields than the uncovered control, depending on the type of covering material used. Average weight of lettuce heads under the covering was 20 - 44% greater than the uncovered crops. The covering of carrot sown in mid March increased yields by 62 - 91% compared to the control. The marketable covered carrots were 18% larger in diameter, 13 - 29% longer, and weighed 38-54% more, on average. A yield increase of 14 - 286% was obtained with covered pak-choi compared to uncovered crop. Growth method, type of covering material, and plant density were all factors. Under the covering the average weight of the marketable portion of pak-choi plant was 36% greater, and the volume 19% greater, than the control. The covered plants were earlier and the first harvest yield was greater than the control.

Izvorni jezik
Engleski

Znanstvena područja
Poljoprivreda (agronomija)

POVEZANOST RADA