Kajian Sifat Fisik, Kimia, Dan Biologi Pada Tanah Berpasir Di Beberapa Wilayah Indonesia

Abstract

The growth, development and yield of plant production are influenced by soil properties, both physical, chemical and biological properties of the soil. The physical properties of the soil include texture, structure, consistency, soil moisture (the ability of the soil to hold water) and soil permeability. Soil chemical properties include soil pH, cation exchange capacity and nutrient content. Nutrient content, consisting of mineral and organic content including nitrogen, phosphorus, potassium and other materials. Biological properties of soil are microorganisms that decompose organic matter that live in the soil. To get optimal yields on sandy soil, a solution is needed to solve the problem of physical, chemical and biological properties of sandy soil. This study uses secondary data aimed at knowing the physical, chemical and biological conditions that exist in several coastal areas in Indonesia. The results obtained treatment recommendations to improve the physical, chemical and biological conditions of sandy soil so as to produce optimal plant production. Based on the data obtained, to improve the condition of the sandy soil, several soil amendments can be used, including using compost, manure, biochar, and nitrogen fixing. The results showed that the addition of soil amendments improved soil quality, especially on the physical properties of the soil where in sandy soil the most important thing was the ability of the soil to hold water and maintain available nutrients in the soil. The most important soil chemical properties are the availability of nutrients in the soil. The responses obtained vary, especially in sandy soils and depend on the commodity of the plant. Keywords: biological, physical, chemical, sandy soil, soil

Status Kesuburan Tanah Sawah Pasang Surut Di Desa Podorukun Kabupaten Kayong Utara

“…Tabel 4 menunjukkan bahwa kandungan P-Total tanah pada keempat lokasi penelitian memiliki kriteria rendah. Rendahnya kandungan P-total tanah disebabkan mineral sumber P pada tanah rendah, dimana sumber alami P adalah pelapukan mineral batuan seperti strengtit dan flourapatit, namun memiliki daya larut yang rendah (Syahputra et al, 2015). Sulakhudin et al, (2017) menyatakan bahwa unsur P dalam tanah berasal dari dekomposisi bahan organik dan desintegrasi mineral yang mengandung P seperti apatit.…”

Potential of Bio-Silica From Palm Oil Waste As a Rehabilitation of Dry Marginal Land on Corn (Zea mays L.) Planting

“…Tanah Ultisol digolongkan sebagai tanah marginal yang memiliki tingkat kesuburan rendah dikarenakan tanah Ultisol memiliki pH yang rendah (<5) dan mengandung unsur toksik di dalamnya (Syahputra et al, 2015). Al dan Fe termasuk unsur toksik yang menyebabkan turunnya kesuburan tanah akibat terjadinya proses pengikatan antar unsur hara dalam tanah, sehingga unsur hara yang saling terikat akan sulit diserap oleh tanaman.…”

Effect of Extract Euphorbia hirta Linn. Against Leaf and Fruit Pests on Plants Cucumber (Cucumis sativus Linn.)

“…The high Al-dd value of the soil causes the aluminum saturation to increase, thus causing low exchangeable bases. With the low exchangeable bases, the saturation value of Al shows that the cation exchange complex is dominated by Al.According toSyahputra, et al (2015), the lack of phosphate in ultisol can be caused by the phosphate content of the soil parent material which is definitely low, or the phosphate content is actually high but not available to plants because it is absorbed by other elements such as Al and Fe.…”