PFT Application on Pomegranate – Keziban YAZICI

Plant diseases, pests and abiotic stress conditions cause significant yield and quality losses in fresh fruit and vegetable production. Pesticides have been widely used to reduce damage caused by plant pests. Some of the bacterial pathogens have developed resistance against antibiotics used as pesticides for almost five decades. Moreover, heavy use of pesticides does not fit to good agricultural practices and residue create health problems and limits export. Kaolin is used to whiten paper and pills like aspirin by the industry. It reflects the light, creates a protective layer similar to cuticula on plants and fruits that provides protection against biotic and abiotic stresses. After specially formulated and changed to dispersible form in water, kaolin; a naturel clay compound, has been used to control biotic and abiotic stresses in fruits and vegetable production, known as “Particle film technology” in the world. Turkey is rich in kaolin sources and kaolin is partially in use.

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PFT Application on Cherry –Hasan BALCI

The aim of this work is to investigate the effects of using alternative products which may be used to control against the Cherry fruit fly [Rhagoletis cerasi L. (Diptera: Tephritidae)] in cherry production area in Kemalpasa (İzmir) province. Kaolin and Spinosad are chosen as alternative products, after suggested number of applications with the suggested dosage the countings have took place during harvest over the number of fruit with and without larvae.

According to the results, spinosad has an effect between % 69.23 -72.31, and kaolin has an effect between % 72.64 – 79.49 against Cherry fruit fly varying between different orchards. During counting, it has been observed that there is an important statistical difference between the control and the alternative products, but there is no important statistical difference within the alternative products.

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PFT Application on Bean – Uğurhan YİĞİTARSLAN

The effect of kaolin as an antitranspirant on yield, yield components and grain quality in dry bean (Phaseolus vulgaris L.)was investigated. Göynük 98 dry bean cultivar was used in the study as plant material. The kaolin was sprayed with two different concentration as 3% and 5%. Kaolin was sprayed plant canopies on the leaves at three different growing stages (vegetative period, start of flowering and period of pod forming). The data of grain yield, biomass per plant, grain yield per plant, number of pods per plant, number of seeds per plant, 100-seed weight, grain protein content and grain some minarel elemts content were obtained. Significant diffirences were obtained among kaolin applications on grain yield, 100-seed weight, grain protein content and grain nitrogen content. It was concluded that grain yield, grain protein content and grain nitrogen content of bean positively effected by kaolin applications.

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PFT Application on Walnut – Neslihan KILIÇ, Nurgül F. TÜREMİŞ, Celaleddin BARUTÇULAR

In this study, the effects of kaolin, which is a natural clay mineral against sunburns, on the physiological properties of the plant were investigated. The experiment was carried out between 2010 and 2011. Payne, Serr and Pedro walnut cultivars were used as plant materials. The application of kaolin started in June with a dose of 6% and continued on a three weeks interval with 4% and respectively 2%. The study analyzed the effects of kaolin application on the temperature of the walnut, stoma conductivity, photosynthetic quantum activity, total amount of chlorophyll on the leaf and sunburn in fruits. As a result, it was found that kaolin application prevents overheating of the plant and has no negative effect on stomatal conductance and total amount of chlorophyll and to reduce sunburn in fruits.

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PFT Application on Watermellon – Merva YÜCEL

In this study, the effects of kaolin clay application on the growth and development of water melon plants ((Citrullus lanatus (Thunb.) Matsum & Nakai cv. Tartan F1) grown under high temperature stress. Kaolin clay was applied once or two or three times at 10-day intervals starting from June 20. Kaolin clay was solved in water and sprayed with a dose of 5 % for single application and of 2.5 % for double or triple applications. Plant and fruit temperature, plant height, fruit length and width, leaf stomata conductance, total soluble solid content of fruit juice, fresh and dry weights of above-ground plant organs, sun damage percentage on fruits and fruit weight were measured. Kaolin clay applications did not affect the total soluble solid content of fruit juice and plant dry weight and fruit weight, However, leaf and fruit surface temperatures, leaf stomata conductance, plant length, and fresh weight of above-ground plant organs were significantly affected by the doses used of kaolin clay and by the number of application. Leaf and fruit surface temperatures of kaolin clay sprayed plants were lowest than those of the control plants. Kaolin clay application decreased the stomatal conductance and stem length of plants, but increased the fresh weight of above-ground plant organs. Kaolin clay applications decreased the number of sun damaged plants The effects of kaolin clay applications on several parameters were apparent with the increasing number of applications.

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PFT Application on Mandarin – Gülcan Tuğçe VANOĞLU

 This study explores the role of the application of kaolin clay, at various doses and times, on certain physiological, morphological characteristics, fruit yield and quality, and heat stress on Okitsuwase mandarins. Kaolin clay application (Surround WP) was made on plants, beginning from small fruit drop (the end of May) in concentrations of 2,5% and/or 5% in different periods (1 to 7 times). Plants excluded from the application were used as control. During the experiment, measurements and analyses such as leaf temperature (ºC), leaf chlorophyll content, leaf water potential (%), fruit temperature (ºC), ratio of fruits with sunburn (%), fruit quality characteristics (fruit width (mm) and height (mm), juice (%), TSS (%), titrable acidity (%), fruit yield per tree (kg/tree) were conducted.

It was determined that, in Dortyol/Hatay conditions, kaolin clay application decreased leaf temperature and increased leaf water potential and leaf chlorophyll content on leaves, and decreased surface temperature and sunburn ratio on fruits of Okitsuwase mandarins. It was also determined that fruit quality (fruit weight, TSS and TSS/Acid ratio) and fruit yield per tree were also increased 8 (5% single dose in Mid-June, 2.5% dose in 15-day intervals following initial application until one week before harvest) and 10 (5% single dose in Mid-June, 5% dose in 10 days, 2.5% dose in 15-day intervals until one week before harvest) applications can be recommended as the most appropriate dose and time.

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