Evaluation of Foliar Paclobutrazol Application on Growth Suppression, Yield, Residue Levels and Fruit Quality in Greenhouse Tomato Cultivation

Özlem Yılmaz; Emine Polat; Tarık Balkan; Naif Geboloğlu

Makale detayları

Evaluation of Foliar Paclobutrazol Application on Growth Suppression, Yield, Residue Levels and Fruit Quality in Greenhouse Tomato Cultivation

Yazarlar:

Özlem Yılmaz | Emine Polat | Tarık Balkan | Naif Geboloğlu

Yayıncı:

Karyay Karadeniz Yayımcılık

Ana Başlıklar:

Ziraat Mühendisliği (Diğer)

Dergi:

Black Sea Journal of Agriculture Vol.8 Issue 5, pp.605-614

Belge Tipi:

Makale

Yayın Tarihi:

9/2025

Belge Dili:

İngilizce

Document ID (Org No.):

2001358062

pISSN:

2618-6578

Anahtar kelimeler:

Özet:

 This study investigated the effects of foliar paclobutrazol PBZ applications at varying doses and intervals on the vegetative growth, yield, fruit quality, and residue accumulation in greenhouse-grown tomatoes. The experiment was conducted from April to November 2021 in a controlled greenhouse environment at Tokat Gaziosmanpaşa University, Türkiye. Indeterminate beef tomato cultivar Bellfort F₁ Enza Zaden was used in the study. PBZ was applied foliarly at concentrations of 10, 20, and 40 mgL at 7-day and 14-day intervals. Results indicated that PBZ significantly reduced plant height and internode length, with the most compact plants observed under the 40 mgL 14-day treatment. However, yield-related parameters responded more favorably to lower PBZ doses. The highest marketable yield 175.59 tha and total yield 178.27 tha were obtained under the 10 mgL 14-day treatment, which also supported greater fruit number and higher dry matter content. Moderate PBZ doses improved fruit weight and chlorophyll index, whereas higher doses tended to suppress yield and quality. While fruit soluble solids and titratable acidity were not significantly affected, slight improvements were noted under moderate PBZ treatments. Importantly, no PBZ residues were detected in fruit samples. These findings demonstrate that foliar PBZ application at low doses is effective for controlling vegetative growth without compromising fruit quality or leaving detectable residues. The results support the use of foliar PBZ as a safe and practical growth regulation strategy for high-density tomato production under greenhouse conditions.

 This study investigated the effects of foliar paclobutrazol PBZ applications at varying doses and intervals on the vegetative growth, yield, fruit quality, and residue accumulation in greenhouse-grown tomatoes. The experiment was conducted from April to November 2021 in a controlled greenhouse environment at Tokat Gaziosmanpaşa University, Türkiye. Indeterminate beef tomato cultivar Bellfort F₁ Enza Zaden was used in the study. PBZ was applied foliarly at concentrations of 10, 20, and 40 mgL at 7-day and 14-day intervals. Results indicated that PBZ significantly reduced plant height and internode length, with the most compact plants observed under the 40 mgL 14-day treatment. However, yield-related parameters responded more favorably to lower PBZ doses. The highest marketable yield 175.59 tha and total yield 178.27 tha were obtained under the 10 mgL 14-day treatment, which also supported greater fruit number and higher dry matter content. Moderate PBZ doses improved fruit weight and chlorophyll index, whereas higher doses tended to suppress yield and quality. While fruit soluble solids and titratable acidity were not significantly affected, slight improvements were noted under moderate PBZ treatments. Importantly, no PBZ residues were detected in fruit samples. These findings demonstrate that foliar PBZ application at low doses is effective for controlling vegetative growth without compromising fruit quality or leaving detectable residues. The results support the use of foliar PBZ as a safe and practical growth regulation strategy for high-density tomato production under greenhouse conditions.

 This study investigated the effects of foliar paclobutrazol PBZ applications at varying doses and intervals on the vegetative growth, yield, fruit quality, and residue accumulation in greenhouse-grown tomatoes. The experiment was conducted from April to November 2021 in a controlled greenhouse environment at Tokat Gaziosmanpaşa University, Türkiye. Indeterminate beef tomato cultivar Bellfort F₁ Enza Zaden was used in the study. PBZ was applied foliarly at concentrations of 10, 20, and 40 mgL at 7-day and 14-day intervals. Results indicated that PBZ significantly reduced plant height and internode length, with the most compact plants observed under the 40 mgL 14-day treatment. However, yield-related parameters responded more favorably to lower PBZ doses. The highest marketable yield 175.59 tha and total yield 178.27 tha were obtained under the 10 mgL 14-day treatment, which also supported greater fruit number and higher dry matter content. Moderate PBZ doses improved fruit weight and chlorophyll index, whereas higher doses tended to suppress yield and quality. While fruit soluble solids and titratable acidity were not significantly affected, slight improvements were noted under moderate PBZ treatments. Importantly, no PBZ residues were detected in fruit samples. These findings demonstrate that foliar PBZ application at low doses is effective for controlling vegetative growth without compromising fruit quality or leaving detectable residues. The results support the use of foliar PBZ as a safe and practical growth regulation strategy for high-density tomato production under greenhouse conditions.

 This study investigated the effects of foliar paclobutrazol PBZ applications at varying doses and intervals on the vegetative growth, yield, fruit quality, and residue accumulation in greenhouse-grown tomatoes. The experiment was conducted from April to November 2021 in a controlled greenhouse environment at Tokat Gaziosmanpaşa University, Türkiye. Indeterminate beef tomato cultivar Bellfort F₁ Enza Zaden was used in the study. PBZ was applied foliarly at concentrations of 10, 20, and 40 mgL at 7-day and 14-day intervals. Results indicated that PBZ significantly reduced plant height and internode length, with the most compact plants observed under the 40 mgL 14-day treatment. However, yield-related parameters responded more favorably to lower PBZ doses. The highest marketable yield 175.59 tha and total yield 178.27 tha were obtained under the 10 mgL 14-day treatment, which also supported greater fruit number and higher dry matter content. Moderate PBZ doses improved fruit weight and chlorophyll index, whereas higher doses tended to suppress yield and quality. While fruit soluble solids and titratable acidity were not significantly affected, slight improvements were noted under moderate PBZ treatments. Importantly, no PBZ residues were detected in fruit samples. These findings demonstrate that foliar PBZ application at low doses is effective for controlling vegetative growth without compromising fruit quality or leaving detectable residues. The results support the use of foliar PBZ as a safe and practical growth regulation strategy for high-density tomato production under greenhouse conditions.

Makale detayları

Evaluation of Foliar Paclobutrazol Application on Growth Suppression, Yield, Residue Levels and Fruit Quality in Greenhouse Tomato Cultivation

Yazarlar:

Özlem Yılmaz | Emine Polat | Tarık Balkan | Naif Geboloğlu

Yayıncı:

Karyay Karadeniz Yayımcılık

Ana Başlıklar:

Ziraat Mühendisliği (Diğer)

Dergi:

Black Sea Journal of Agriculture Vol.8 Issue 5, pp.605-614

Belge Tipi:

Makale

Yayın Tarihi:

9/2025

Belge Dili:

İngilizce

Document ID (Org No.):

2001358062

pISSN:

2618-6578

Plant height control

Internod length

Solanum lycopersicum

PBZ residue

Yield

Growth retardanPlant height control

Internod length

Solanum lycopersicum

PBZ residue

Yield

Growth retardan

Sayı

Makale detayları

Yazarlar: Özlem Yılmaz | Emine Polat | Tarık Balkan | Naif Geboloğlu

Yayıncı: Karyay Karadeniz Yayımcılık

Ana Başlıklar: Ziraat Mühendisliği (Diğer)

Dergi: Black Sea Journal of Agriculture Vol.8 Issue 5, pp.605-614

Belge Tipi: Makale

Yayın Tarihi: 9/2025

Belge Dili: İngilizce

Document ID (Org No.): 2001358062

pISSN: 2618-6578

Sayı

Yazarlar:

Özlem Yılmaz | Emine Polat | Tarık Balkan | Naif Geboloğlu

Yayıncı:

Karyay Karadeniz Yayımcılık

Ana Başlıklar:

Ziraat Mühendisliği (Diğer)

Dergi:

Black Sea Journal of Agriculture Vol.8 Issue 5, pp.605-614

Belge Tipi:

Makale

Yayın Tarihi:

9/2025

Belge Dili:

İngilizce

Document ID (Org No.):

2001358062

pISSN:

2618-6578