Abstract
Organic fertilizer is a plant nutrient material which is used for obtaining the requirements of nutrients of plants grown in agricultural production. Organic fertilizers increase the organic matter content by providing nutrients to the soil as well as providing a more favourable growth environment for plants by correcting the physical properties of the soil. Organic fertilizers, mainly nitrogen, phosphorus, potassium, such as many important nutrients are brought to the soil. Chemical fertilizers can be obtained from petroleum products, from rocks and even from organic sources. This type of fertilizer helps plants grow, but there is no contribution to the growth of the soil. This study was conducted in order to compare the effects on soil two synthetic and organic fertilizers derived molasses each pot seedling stage surprise in 500 ml of water 3 times and followed up at 3 week intervals. Experiment 5 was set up in a randomized trial design and plants were grown in greenhouse conditions. At the end of the experiment, physicochemical analyses of potted soil were carried out and the differences between applications were investigated. Accordingly, the contents of organic matter, salt and mineral matter increased in fertilizer applications. In addition, the lowest soil pH was obtained in the application of synthetic fertilizer.
Highlights
Tomatoes are one of the vegetables produced in temperate climate zone in the world
Organic fertilizer originated from molasses containing 7% N, 7% P and 7% K and synthetic fertilizer(NPK fertilizer solution) containing 10% N, 8% P and 5% K at dosage of 200 cc/ da were applied in 500 ml tap water at seedling transfer and 3 times more with 3 weeks intervals
Fruits and plants were harvested after four months later at the end of the experiment and soil in each pot was analyzed for soil productuvitiy. pH (Richards, 1954), EC (Richards, 1954), P (Knudsen, 1975), K (Carson, 1980), Fe, Cu, organic matter (Walkley, 1946) and CaCO3 (Çağlar, 1949) were analyzed for soil fertility
Summary
Tomatoes are one of the vegetables produced in temperate climate zone in the world. Origin of tomatoes is Peru, it is started to be produced in Anatolia in 1900s. Sustainable plant production is to obtain enough qualified product without exhaust the natural sources and destroy the nature It needs to be balanced the plant nutrition objects in soil in addition to climatic factors for sustainability of soil fertility. Organic fertilizers speed the microbial reactions and provides micro and macro elements for plant production, beside develops the stricture and aerated the soil. Inorganic fertilizers are produced by decomposition of petrol derivatives, rocks and organic matters and contain directly micro and macro elements in. Those are useful for plant development but are not for soil fertility (Yetgin, 2010). The effect of organic and synthetic fertilizers used in tomatoes production on soil fertility was investigated
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