Investigation into nutritional status of cucumber grown greenhouse by means of soil and plant analyses around the Yalova region


Thesis Type: Postgraduate

Institution Of The Thesis: Uludağ Üniversitesi, Turkey

Approval Date: 2004

Thesis Language: Turkish

Student: SERHAT GÜREL

Supervisor: HALUK BAŞAR

Abstract:

This study was conducted to evaulate nutritional status of the cucumber grown soils and to determinate the probable nutritient problems of cucumber plants grown under glass in Yalova Region. For this purpose, 40 soil samples (from a depth of 0-20 cm and 20-40 cm) were collected to determinate pH, CaC03, total soluble salt, organic matter, texture, total N, available P, exchangeable K, Ca, Mg, Na, available Fe, Cu, Zn, Mn and B. The saturation extracts of these 40 soil samples were prepared to determinate the soluble content of their CO3, HCO3, SO4, CI anions and Na, K, Ca, Mg cations. Also 60 plant samples consisted of leaf, fruit and fruit peel were analyzed for their N, P, K, Ca, Mg, Na, Fe, Cu, Zn, Mn and B content. Nutritional status of examined soils and plants were evaluated by comparing the results of analyses with the interpretive values for the nutrients. According to the results, the %55 of soil samples was neutral in pH and %30 of them were slightly alkaline. The %30 of soil samples have high and %27.5 of soil samples have enough organic matter and %67.5 of them were slightly calcerious and %20 calcerious. The texture analyses showed mat %42.5 of the soil samples were clay loam, %32.5 of soils were sandy clay loam and %22.5 of them were clay. The soils have no salinity problem. %100 of the soil samples were insufficient in total N content, %97.5 of samples were insufficient in available P content. The exchangeable K content were high at the %70 of soil samples. %87.5 of soil samples have insufficient content in Ca and % 100 of soil samples were insufficient and enough in Mg content. Exchangeable Na content were showed sufficiency for all of the samples. Accordinding to the available micro nutrient analyses; %97.5 of soil samples in Fe content, %100 of soils in Cu and Mn content, %35 of them in B and %95 of soil samples in Zn content were found insufficient. On the other hand %60 of soil samples were found in high levels in their B content.IV Nutritional status of analyzed cucumber leaves, fruits and fruit peels were evaluated by comparing the interpretative values for the nutrients. According to the results; the %85 of leaf samples were insufficient and high in N content, %95 of leaf samples were insufficient in Ca, P, Mg, Fe, Cu, Zn and %65 of them were insufficient in Mn content. But %95 of leaf samples were sufficient in K, %35 of leaf samples were sufficient in Mn and %100 of leaf samples were sufficient in B content. According to the Cucumber fruits analyses; %60 of samples were insufficient for their K, %50 of samples were insufficient for their Mg, %60 of samples were insufficient for their Fe, %95 of samples were insufficient for their Zn, %100 of samples were insufficient for their Cu content. Also %75 of samples were sufficient for their N, %50 of samples were sufficient for their Mg, %40 of samples were sufficient for their Fe, %100 of samples were sufficient for their Ca, Mn and B content. %100 of samples were found high for their P content. The N concentrations were insufficient in %35 of peel samples. The %40 of cucumber fruit peels were insufficient in Fe and Mg, %95 of them were insufficient in Cu and %90 of them were insufficient in Zn content. %65 of these fruit peels were sufficient in N, %60 of fruit peels were sufficient in Mg and Fe, %100 of fruit peels were sufficient in Ca, Mn and B content. %100 of them were found high in P and %95 of them were high in Zn content.