Abstract:

This study was carried out in greenhouse conditions to determine the effects of the tea waste compost mixed in different proportions in the soil and the effects of different salt concentrations on the development of the pepper plant. Tested in the sand-covered soil, four different proportions of tea waste compost (0,2%,4,8%), five salt levels (0,0.75, 1.5, 2.5 and 3.5 dS m-1) and three repeatedly random parsels were established according to the test pattern. When the pepper plant has completed its development, the fruits have been harvested, the development of the plant and the content of some nutrient elements have been determined. The application of 4% and 8% of the tea waste compost has provided a double increase in root-body weight and plant length, 49% in fruit weight, and the effect on the fruit number has been unimportant. Salt applications have negatively affected these properties, resulting in roots weight and plant length 2 times, body weight 40 percent, fruit number 41 percent, fruit weight 39 percent. The root development and plant length of 0.75 dS m-1 in other characteristics, the application of 1.5 dS m-1 salt is determined as a critical point. The interaction of both factors on nitrogen, phosphorus and potassium content of the pepper plant has been found important. Applications on leaf phosphorus content have a negative effect, while the highest leaf nitrogen content is not salt and 8% in compost application, the highest leaf potassium content is determined at 0.75 dSm-1 salt level at 8% in compost conditions. When all the results are evaluated, it can be said that compost applications encourage plant development in salty conditions.

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