Abstract
Irrigation with moderately saline water is a necessity in many semi-arid areas of the Mediterranean Basin, and requires adequate irrigation management strategies. Broccoli (Brassica oleracea var. italica), a crop moderately sensitive to salinity stress, was used to evaluate the effects of the application of saline (S) and non-saline (NS) irrigation water during two growth phases in terms of plant growth, water status, floret yield, glucosinolate profile, and quality. Use of S-water (4 dS m−1) from transplanting to appearance of the inflorescence, alternated with NS-water (2 dS m−1) from inflorescence appearance to harvest and vice versa were compared with continuous use of S- or NS-water. Irrigation with S-water during the first growth-phase decreased leaf water and osmotic potential, net CO2 assimilation rate, and favoured Na+ and Cl− accumulation at toxic levels causing ion imbalances and reducing broccoli plant growth. Application of S-water exclusively after inflorescence appearance caused a 22.2% decrease of the head dry biomass compared to NS-NS plants. Regardless of application timing, irrigation with S-water decreased broccoli yield and head mean fresh weight compared to NS-NS plants by 20% and 24%, respectively. Use of S-water in one or both growth stages improved broccoli dry matter and soluble solid content, while had no impact on total glucosinolate concentration. However, application of S-water during the first growth-phase resulted in an increase of indolic glucosinolates (glucobrassicin and neoglucobrassicin) and potential effects on broccoli nutritional properties and flavour.
| Original language | English (US) |
|---|---|
| Pages (from-to) | 97-104 |
| Number of pages | 8 |
| Journal | Agricultural Water Management |
| Volume | 203 |
| DOIs | |
| State | Published - Apr 30 2018 |
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All Science Journal Classification (ASJC) codes
- Agronomy and Crop Science
- Water Science and Technology
- Soil Science
- Earth-Surface Processes
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Effects of application timing of saline irrigation water on broccoli production and quality. / Di Gioia, Francesco; Rosskopf, Erin N.; Leonardi, Cherubino; Giuffrida, Francesco.
In: Agricultural Water Management, Vol. 203, 30.04.2018, p. 97-104.Research output: Contribution to journal › Article
TY - JOUR
T1 - Effects of application timing of saline irrigation water on broccoli production and quality
AU - Di Gioia, Francesco
AU - Rosskopf, Erin N.
AU - Leonardi, Cherubino
AU - Giuffrida, Francesco
PY - 2018/4/30
Y1 - 2018/4/30
N2 - Irrigation with moderately saline water is a necessity in many semi-arid areas of the Mediterranean Basin, and requires adequate irrigation management strategies. Broccoli (Brassica oleracea var. italica), a crop moderately sensitive to salinity stress, was used to evaluate the effects of the application of saline (S) and non-saline (NS) irrigation water during two growth phases in terms of plant growth, water status, floret yield, glucosinolate profile, and quality. Use of S-water (4 dS m−1) from transplanting to appearance of the inflorescence, alternated with NS-water (2 dS m−1) from inflorescence appearance to harvest and vice versa were compared with continuous use of S- or NS-water. Irrigation with S-water during the first growth-phase decreased leaf water and osmotic potential, net CO2 assimilation rate, and favoured Na+ and Cl− accumulation at toxic levels causing ion imbalances and reducing broccoli plant growth. Application of S-water exclusively after inflorescence appearance caused a 22.2% decrease of the head dry biomass compared to NS-NS plants. Regardless of application timing, irrigation with S-water decreased broccoli yield and head mean fresh weight compared to NS-NS plants by 20% and 24%, respectively. Use of S-water in one or both growth stages improved broccoli dry matter and soluble solid content, while had no impact on total glucosinolate concentration. However, application of S-water during the first growth-phase resulted in an increase of indolic glucosinolates (glucobrassicin and neoglucobrassicin) and potential effects on broccoli nutritional properties and flavour.
AB - Irrigation with moderately saline water is a necessity in many semi-arid areas of the Mediterranean Basin, and requires adequate irrigation management strategies. Broccoli (Brassica oleracea var. italica), a crop moderately sensitive to salinity stress, was used to evaluate the effects of the application of saline (S) and non-saline (NS) irrigation water during two growth phases in terms of plant growth, water status, floret yield, glucosinolate profile, and quality. Use of S-water (4 dS m−1) from transplanting to appearance of the inflorescence, alternated with NS-water (2 dS m−1) from inflorescence appearance to harvest and vice versa were compared with continuous use of S- or NS-water. Irrigation with S-water during the first growth-phase decreased leaf water and osmotic potential, net CO2 assimilation rate, and favoured Na+ and Cl− accumulation at toxic levels causing ion imbalances and reducing broccoli plant growth. Application of S-water exclusively after inflorescence appearance caused a 22.2% decrease of the head dry biomass compared to NS-NS plants. Regardless of application timing, irrigation with S-water decreased broccoli yield and head mean fresh weight compared to NS-NS plants by 20% and 24%, respectively. Use of S-water in one or both growth stages improved broccoli dry matter and soluble solid content, while had no impact on total glucosinolate concentration. However, application of S-water during the first growth-phase resulted in an increase of indolic glucosinolates (glucobrassicin and neoglucobrassicin) and potential effects on broccoli nutritional properties and flavour.
UR - http://www.scopus.com/inward/record.url?scp=85043480286&partnerID=8YFLogxK
UR - http://www.scopus.com/inward/citedby.url?scp=85043480286&partnerID=8YFLogxK
U2 - 10.1016/j.agwat.2018.01.004
DO - 10.1016/j.agwat.2018.01.004
M3 - Article
AN - SCOPUS:85043480286
VL - 203
SP - 97
EP - 104
JO - Agricultural Water Management
JF - Agricultural Water Management
SN - 0378-3774
ER -