DAMPAK PEMANFAATAN PUPUK ORGANIK TERHADAP SIFAT FISIK TANAH DALAM BUDIDAYA SINGKONG LAHAN PESISIR SELATAN KABUPATEN JEMBER

Abstract

Coastal land is a marginal land that has a low soil productivity as a result of loose soil structure, low water holding ability, high infiltration and evaporation, low fertility, low organic matters, high temperatures and strong winds, low cation exchange capacity and high infiltration. Excessive availability of air in the pores causes drying and oxidation of organic materials to run fast. In 2014, in the southern coastal area of Jember Regency had experiments on cassava cultivation been conducted from January 2014, with a variety of organic fertilizer treatments such as: control, liquid organic fertilizer, fish hydrolyzate fertilizer, and manure. However, the research only examined the productivity of cassava and did not investigate the physical and chemical properties of the soil that affected the productivity of cassava plants. The physical properties have either direct or directly impacts and control the growth of plants, roots, oxygen, and temperature.