Evaluasi Sifat Biologi Tanah Tanaman Kopi Arabika (Coffea arabica L.) di Beberapa Kecamatan di Kabupaten Mandailing Natal
ABSTRACT
Coffee is one of the agricultural commodities that has a sufficiently high economic
value. Mandailaing Natal is the one of the coffee-producing areas in Indonesia. This
study aimed to evaluate the biological properties of the soil, among others organic
carbon, total nitrogen, total soil respiration and total soil microorganisms to the
production of coffee. This study conducted using survey method. Samples were taken
at random method deliberately based on deployment coffee plants from various
altitudes. The measured parameters were soil organic carbon, total nitrogen, soil
respiration and total soil microorganisms. Data were tested with the data assuming a
classic, correlation and regression analysis. The results showed that the biological
properties of soil associated with the production were not significant. The
correlation between biological properties of the soil with the production of coffee
was low.
Keywords :
Soil Biology Characteristic, Coffee Production, Regression
Universitas Sumatera Utara
ABSTRAK
Kopi merupakan salah satu komoditas pertanian yang mempunyai nilai ekonomi
cukup tinggi. Daerah Mandailing Natal merupakan salah satu daerah penghasil kopi
di Indonesia. Penelitian ini bertujuan untuk mengevaluasi sifat biologi tanah antara
lain C – organik, N – total, respirasi tanah dan total mikroorganisme tanah terhadap
produksi kopi. Penelitian ini dilakukan metode survei. Sampel diambil dengan
metode acak sengaja berdasarkan ketinggian tempat dengan parameter yang diukur
yaitu C – organik, N – total, respirasi tanah dan total mikroorganisme tanah. Data
diuji dengan asumsi data klasik, analisis korelasi dan regresi. Hasil penelitian
menunjukkan bahwa sifat biologi tanah berhubungan tidak nyata dengan produksi.
Korelasi antara sifat biologi tanah terhadap tanaman kopi tergolong rendah.
Kata kunci :
Sifat Biologi Tanah, Produksi Kopi, Regresi
Universitas Sumatera Utara
Coffee is one of the agricultural commodities that has a sufficiently high economic
value. Mandailaing Natal is the one of the coffee-producing areas in Indonesia. This
study aimed to evaluate the biological properties of the soil, among others organic
carbon, total nitrogen, total soil respiration and total soil microorganisms to the
production of coffee. This study conducted using survey method. Samples were taken
at random method deliberately based on deployment coffee plants from various
altitudes. The measured parameters were soil organic carbon, total nitrogen, soil
respiration and total soil microorganisms. Data were tested with the data assuming a
classic, correlation and regression analysis. The results showed that the biological
properties of soil associated with the production were not significant. The
correlation between biological properties of the soil with the production of coffee
was low.
Keywords :
Soil Biology Characteristic, Coffee Production, Regression
Universitas Sumatera Utara
ABSTRAK
Kopi merupakan salah satu komoditas pertanian yang mempunyai nilai ekonomi
cukup tinggi. Daerah Mandailing Natal merupakan salah satu daerah penghasil kopi
di Indonesia. Penelitian ini bertujuan untuk mengevaluasi sifat biologi tanah antara
lain C – organik, N – total, respirasi tanah dan total mikroorganisme tanah terhadap
produksi kopi. Penelitian ini dilakukan metode survei. Sampel diambil dengan
metode acak sengaja berdasarkan ketinggian tempat dengan parameter yang diukur
yaitu C – organik, N – total, respirasi tanah dan total mikroorganisme tanah. Data
diuji dengan asumsi data klasik, analisis korelasi dan regresi. Hasil penelitian
menunjukkan bahwa sifat biologi tanah berhubungan tidak nyata dengan produksi.
Korelasi antara sifat biologi tanah terhadap tanaman kopi tergolong rendah.
Kata kunci :
Sifat Biologi Tanah, Produksi Kopi, Regresi
Universitas Sumatera Utara