Research Information System
CUSTOS E AGRONEGOCIO ON LINE, no.3, pp.2-40, 2024 (SCI-Expanded)
According to FAO data for the year 2021, world paddy production areas have been calculated as 165 million ha and the production amount as 787 million tons. According to TSI data for 2022, the paddy production area in Turkiye has been determined as 120,511 ha and the production amount as 950,000 tons. Turkiye's self-sufficiency rate in rice is around 80%. Turkiye has a share of 5.71% in world paddy imports. & Ccedil;anakkale province ranks 4th with 10% of paddy cultivation areas and 10.21% of production throughout the country. The average paddy yield in the province is 805.50 kg da-1, which is above the country's yield value (788.31 kg da-1). In the examined enterprises, it has been found out that 25.13 kg da-1 of pure nitrogen, 7.52 kg da-1 of pure phosphorus and 5.37 kg da-1 of pure potassium fertilizer are used per unit area in paddy production. In the study, the effect of chemical fertilizer factor on the amount of paddy production has been examined with the help of the production function. Coefficients of elasticity in the rice production estimation function have been determined as; pure nitrogen (X1) 0.639, pure phosphorus (X2) 0.140 and pure potassium (X3) 0.220. Pure nitrogen (X1) and pure potassium (X3) have been found to be statistically significant at the level of 1% and 5% respectively. It has been concluded that the sum of the coefficients of the production elasticity of the estimation equation (& sum;beta i 0,999) expresses the constant return to the scale. Among the factors included in the equation, the variable with the highest marginal efficiency coefficient has been found to be pure potassium (X3). In the study, it has been determined that pure nitrogen, pure phosphorus and pure potassium fertilizers are being used below the economic optimum level in paddy production. In other words, the results of the research revealed that the fertilizer factor is not used rationally in paddy production and in this case, it causes a loss of yield and therefore loss of income for the producer.