Investigating the effects of different levels of lignin, calcium nitrate and potassium sulfate on vitamin C and Ph 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 vitamin C and Ph 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 Malus domestica Borkh apple is one of the most important garden products that each year has a large share of world trade in agricultural products. Organic matter plays an important role in improving the quality and improving the physical properties of the soil.The aim of this study was to determine the best levels of lignin consumption in increasing the absorption of calcium and potassium elements in apple trees. This research was carried out in East Azarbaijan province of Hashtroud city in an apple garden during 2018- 19. The experiment was factorial based on randomized complete block with three replications 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”. According to the results, the highest amount of vitamin C in the fruit (16.20 mg.100 g-1 fresh fruit) was obtained by lignin 50 g, 200 g potassium sulfate and without calcium nitrate application. The highest (3.59) of fruit juice pH was obtained in combination treatment of without lignin, potassium sulfate 200 g and calcium nitrate 200 g application.

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