New irrigation technologies and commonly used
traditional furrow irrigation methods were compared to drip irrigation in order
to increase color, total dry matter, total carotenoid and vitamin C of
processing red pepper widely grown in the Mediterranean part of Turkey. This
research was carried out in 2010-2011 growing seasons at Tarsus in Turkey. The
experimental treatments; Drip treatments consist of full irrigation (DI100),
deficit irrigation DI75, DI50, DIPRD50, and DIFPRD50
Alternative partial root drying (DIPRD50) and fixed partial root
drying (DIFPRD50) received 50% of DI100. Irrigation was
applied when 25% and 40% of the available water in the 60 cm soil profile were
consumed in DI100 and FI100 treatments in drip and furrow
systems, respectively and soil water replenished to field capacity in DI100
and FI100 treatments. In furrow irrigation, treatments consist of
full irrigation (FI100), alternative furrow (FIA50) and
PRD furrow (FIPRD50). FIA50 and FIPRD50
received 50% of water applied to FI100. In FIA50 the same
furrows were irrigated while FIPRD50 irrigated alternately. The
highest yields in drip and furrow systems were obtained from the DI100
and FI100 treatments, respectively. In generally, DIFPRD50
treatment was the highest a* value in drip irrigation system which means that
fruits had more red color. On the other hand, b* values (it represents yellow
color because of positive values) decreased following the first picking. In
generally, the color parameters (a* and b*) of furrow irrigation treatments in
the different picking times was not statistically significant. Total carotenoid
rates increased with following picking time both drip and furrow irrigation
systems and it is lower value under drip system than in the furrow system.
Finally, results indicate that in drip irrigation DI100 treatment;
and in furrow irrigation, FI100 treatment was recommended. Under
water scarcity conditions, DI75 and FIPRD50 treatments
can be recommended.
Colour processing red pepper total carotenoid vitamin C water level
Konular | Mühendislik |
---|---|
Bölüm | Makaleler |
Yazarlar | |
Yayımlanma Tarihi | 9 Kasım 2017 |
Yayımlandığı Sayı | Yıl 2017Sayı: 1 |