Yapay Aydınlatma Şiddeti ve Süresinin Hidroponik Tekniği İle Yetiştirilen Fesleğen Bitkisinin Verimine Etkisi
DOI:
https://doi.org/10.24925/turjaf.v12i9.1516-1522.6802Anahtar Kelimeler:
Dikey tarım- hidroponik- Yapay aydınlatma- LED aydınlatma- Ocimum basilicumÖzet
Bu çalışmada aydınlatma veriminin en yüksek olduğu spektrum olan soğuk beyaz ve tam spektrum ışık kullanılarak farklı ışık şiddetleri ve sürelerinin geniş yeşil ve kırmızı yapraklı fesleğen bitkilerinin (Ocimum basilicum) gelişimi ve verimi üzerindeki etkisi araştırılmıştır. Toplamda 13,5 m2 lik alanda gerçekleştirilen çalışmada, 27 ayrı, 0,5’ er m2’ lik deneme parsellerinde farklı yapay aydınlatma şiddeti ve süreleri uygulanarak azot denge indisi (NBI) ve hasat sonrasında elde edilen verim değerlerinin arasındaki ilişkiler istatistiksel olarak değerlendirilmiştir. Çalışmada aydınlatma şiddeti faktörünün (AŞF) üç seviyesi, fotosentetik foton akı yoğunluğu (PPFD) olarak sırasıyla, 165,6 µmol m-2 s-1, 248,4 µmol m-2 s-1 ve 331,2 µmol m-2 s-1 ile aydınlatma süresi faktörünün (ASF) üç seviyesi (12-16-20 saat gün-1) denenmiştir. Elde edilen sonuçlara göre geniş yeşil yapraklı fesleğen bitkisi için 331,2 µmol s-1 aydınlatma şiddeti faktörü ve 20 saat gün-1 aydınlatma süresi faktörlerinde, geniş kırmızı yapraklı fesleğen bitkisi içinse 331,2 µmol s-1 aydınlatma şiddeti faktörü ve 12 saat gün-1 aydınlatma süresi faktörlerinde en yüksek verim değerleri elde edilmiştir.
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