Review on: The Effect NPS Fertilizer Rate on Phenology, Growth and Yield Parameters of Food Barley (Hordeum vulgare L.)

Barley is one of the popular crops cultivated since ancient time in the world. Barley is one of the main cereal crops produced in the World and it is one of the most ancient crops among cereals and has played a significant role in the development of agriculture in the world. It is commonly used for food, animal feed and beverage value. The most important factors that reduce yield of barley is poor soil fertility, blanket recommendation of fertilizers, soil acidity (low soil pH), diseases and insects, poor crop management practices. The main objective of this paper is to review the effect of NPS fertilizer rates on food barley yield and yield components. Balanced fertilization is the key to sustainable crop production and maintenance of soil health. The yield of crop is depending upon the combined effect of many factors. Among these factors, the production and productivity is declining from time to time because of lack of combined application of input like recommended amount of fertilizers and management practices. Based on the review on the effect NPS fertilizer rate on phenology, growth and yield parameters of food barley. It has both economic and environmental consideration. The application of NPS fertilizer rates shows significant effect on growth, yield and yield components of food barley. It influence on the phonological, vegetative growth, yield and yield related parameters. Days to 50%heading, days to 90% maturity, spike length and number of tiller per plant were significantly affected by the NPS fertilizer rate. Then we should or need to focus on micro nutrients that are considered useless by farmers as well as researchers because those micro nutrients deficiency today shows clinical symptoms at human beings especially on children and infant women. Fertilizer suppliers or cooperative unions should pay attention to supply or blended type of the fertilizer instead of supplying single elements, the fact that the government and recognized researchers should give due attention to blended fertilizer to increase production of food Barley.