PHYSIOLOGICAL RESPONSE OF TOMATO PLANTS UNDER DIFFERENT IRRIGATION LEVELS AND NUTRIENT CONCENTRATIONS IN GREENHOUSE

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dc.contributor.authorUllah, Ikram
dc.contributor.authorMao Hanping
dc.contributor.authorShabbir, Abdul
dc.contributor.authorUllah, Muhammad Saif
dc.contributor.authorJabran, Khawar
dc.contributor.authorJaved, Qaiser
dc.contributor.authorButtar, Noman Ali
dc.date.accessioned2024-11-07T13:32:38Z
dc.date.available2024-11-07T13:32:38Z
dc.date.issued2020
dc.departmentNiğde Ömer Halisdemir Üniversitesi
dc.description.abstractThis study assessed the response of various water levels and concentration of nutrients on physiological characteristics of tomatoes under the greenhouse. The effects of various water levels as well as concentration of nutrients on the physiological characteristics of greenhouse tomatoes were discussed. Treatments consisted on five different levels of water based on crop evapotranspiration (ETC) as W-50%, W-75%, W-100%, W-125% and W-150%, and also five different levels of nutrient concentrations based on strength of Hoagland solution (X) as N-0.5X, N-0.75X, N-1.0X, N-1.5X and N-2.0X. The experiment was conducted during the Summer-Spring (SS) of 2015 and Fall-Winter (FW) of 2015-16. Deficit irrigation not only decreased photosynthetic rate (P-n), stomatal conductance (G(s)), and transpiration rate (T-r) of tomato but also down regulated the light-saturated net photosynthetic rate (P-n,P-max) from 6.18% to 11.38% and c indicating light use efficiency by 5.08% to 6.0% during SS and FW respectively. Increase in nutrients, enhanced the daily mean P. values up to 21.80 and 14.94 mu mol (CO2) m(2) s(-1) at N-1.5X during SS and FW, respectively. Addition of nutrients more than 1.5X did not significantly improve the photosynthetic performance. No significant difference was observed in P-n on 42nd DAT for T-6(W-125%-Ni-1.0X) and CR(W-100%-N-1.0X) but reduced significantly at subsequent measured days for CR. Considering only leaf gas exchange parameters, CR was found to be the optimal combination of water amount and nutrients concentration. Finally, interactive quadratic regression models were developed for P-n,P-max and epsilon to measure the water and nutrients needs from instantaneous values of P-n,P-max and epsilon. Our developed regression equations could be solved for momentarily estimation of water and nutrients.
dc.description.sponsorshipNational Key RD Projects [2018YFF0213600]; National Natural Science Foundation of China [61233006]
dc.description.sponsorshipThis work was supported by the National Key R&D Projects under Grant [No. 2018YFF0213600] and National Natural Science Foundation of China under grant [61233006]. There is no conflict of interest by the authors.
dc.identifier.doi10.21162/PAKJAS/19.844
dc.identifier.endpage608
dc.identifier.issn0552-9034
dc.identifier.issn2076-0906
dc.identifier.issue2
dc.identifier.startpage599
dc.identifier.urihttps://doi.org/10.21162/PAKJAS/19.844
dc.identifier.urihttps://hdl.handle.net/11480/15528
dc.identifier.volume57
dc.identifier.wosWOS:000518805000037
dc.identifier.wosqualityQ4
dc.indekslendigikaynakWeb of Science
dc.language.isoen
dc.publisherUniv Agriculture, Fac Veterinary Science
dc.relation.ispartofPakistan Journal of Agricultural Sciences
dc.relation.publicationcategoryMakale - Uluslararası Hakemli Dergi - Kurum Öğretim Elemanı
dc.rightsinfo:eu-repo/semantics/closedAccess
dc.snmzKA_20241106
dc.subjectIrrigation
dc.subjectLight Response curve
dc.subjectLight use efficiency
dc.subjectNutrient concentration
dc.subjectPhotosynthetic rate
dc.subjectTomato
dc.titlePHYSIOLOGICAL RESPONSE OF TOMATO PLANTS UNDER DIFFERENT IRRIGATION LEVELS AND NUTRIENT CONCENTRATIONS IN GREENHOUSE
dc.typeArticle

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