The effects of potassium, nitrogen and straw compost giving to increase organic material levels and k-exchangeable rice fields and rice growth

Abstract

Abstract Potasium and nitrogen fertilization accompanied by the application of rice straw compost is expected to improve the chemical properties of rice fields and the growth of rice plants. The purpose of this research is to find out the effect of potassium, nitrogen and straw compost fertilizer on increasing C-organic, organic matter and K-exchangeable soil and the growth of rice plants. This research was conducted in the rice field area of Cengkeh Turi village, Binjai City (± 32 m asl) from March-July 2018. This study used factorial randomized block design method with 3 Factors: Potassium (KCL): 0. 25. 50 and 75 kg ha−1; Nitrogen (Urea): dosage for farmers (250 kg ha−1) and LCC recommendations (315 kg ha−1); straw compost Treatment: without compost straw (0 t ha−1) and straw compost (5 t ha−1). The results showed that the application of potassium, nitrogen and straw compost had no significant effect on increasing levels of C-organic, organic matter and K-exchangeable paddy soil. However. There was an increase in nutrient status from very low to low. While there is a significant effect on plant height and number of tillers per clump at 2 weeks after planting and shoot dry weight of rice plants.