Investigating the effects of different levels of lignin, calcium nitrate and potassium sulfate on TSS and TA of apple fruit cultivar “Red Delicious”

حنفی, هاشم and شکوهیان, علی اکبر and عيني‌زاده, شهريار and همتی, آرش Investigating the effects of different levels of lignin, calcium nitrate and potassium sulfate on TSS and TA of apple fruit cultivar “Red Delicious”. In: 2nd International and 6th National Iranian Congress on Organic vs. Conventional Agriculture, August 2019, Ardabil, Iran.

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Abstract

The fruit of the apple, the scientific name of Malus domestica , is one of the first fruits that humans have used since prehistoric times . Organic and mineral fertilizers can be used as a suitable method for reducing environmental impacts of chemicals.lignin as an organic matter can have positive effects on plants performance. The aim of this study was to determine the best level of lignin consumption in the increase of calcium and potassium elements in fruit trees, especially apple trees. This research was carried out in East Azarbaijan province of Hashtroud city in an apple garden during 2018-19. The present study was carried out in a factorial arrangement with three replications in a randomized complete block design with four levels of lignin (0, 25, 50 and 75 g), three levels of calcium nitrate (0, 100 and 200 g) and three levels of potassium sulfate (0, 100 and 200 g) application on the apple “Red Delicious” was performed. According to the results, the highest amount of soluble solids (18.00 ° Brix) was observed with lignin non-application treatment, 100 g potassium sulfate and 200 g calcium nitrate, and the highest TA (0.37%) was obtained by combining treatment with lignin non-application, sulfate Potassium 200 g and calcium nitrate 100 g.

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