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Conventional methods of fertilizer release

S. Shahena,M. Rajan,Vinaya Chandran,L. Mathew

Published 2021 in Unknown venue

ABSTRACT

Abstract Any materials that are applied directly to the plant tissue or to the soil to enhance the production and growth of the plants are generally referred to as fertilizers. Nutrient deficiency results in abnormal or stunted growth of crop plants and causes reduction in crop yield. Fertilizers help to ameliorate nutrient deficiency to improve crop yields. The fertilizers are available and applied in solid and liquid form. The methods used for delivering the solid fertilizers are broadcasting, placement, band placement, and pellet application. The liquid fertilizers can be applied as starter solution, foliar application, injection into soil, aerial application, and also by fertigation. The traditional fertilizers can be encapsulated within the shell materials such as sulfur, thermoplastics, ethylene-vinyl acetate, surfactants, etc., to improve their efficiency and also to reduce the environmental contamination. These are called as controlled-release fertilizers. Controlled-release fertilizers, band deep placement, and foliar application can be used to improve or enhance the efficiency and yield of the crop plants and also to minimize phytotoxicity and environmental contamination.

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