Evaluasi Kadar Air Tanah, Bahan Organik dan Liat serta Kaitannya Terhadap Indeks Plastisitas Tanah Pada Beberapa Vegetasi di Kecamatan Pamatang Sidamanik Kabupaten Simalungun
ABSTRAK
Kecamatan Pamatang Sidamanik merupakan salah satu daerah penghasil
komoditas perkebunan. Penelitian ini bertujuan untuk mengetahui hubungan kadar
air tanah dengan indeks plastisitas, bahan organik dengan indeks plastisitas dan
liat dengan indeks plastisitas pada beberapa vegetasi. Penelitian ini dilakukan
metode survei. Sampel diambil dengan metode acak berdasarkan jenis vegetasi
dengan parameter yang diukur yaitu Kadar Air Tanah, Bahan Organik, Kadar Liat
Tanah dan Indeks Plastisitas Tanah. Data diuji dengan analisis regresi dan analisis
faktor. Hasil penelitian menunjukkan bahwa analisis regresi linear bahan organik
dengan indeks plastisitas memiliki hubungan yang erat dan analisis faktor bahan
organik merupakan faktor paling besar yang mempengaruhi indeks plastisitas
tanah yakni 54, 818 %.
Kata kunci: Kadar air tanah, bahan organik, kadar liat, indeks plastisitas, vegetasi,
acak, analisis regresi linier, faktor.
i
Universitas Sumatera Utara
ABSTRACT
District of Pamatang Sidamanik was one of area as producer plantantion
comodity. This research were to know the relation of soil water content with index
plasticity, soil organic matter with index plasticity and clay content with index
plasticity at several vegetation. This research was conducted with survey method.
These samples taken with random method based on vegetation on the soil. The
parameters were determine are soil water content, soil organic matter, clay
content and soil index of plasticity. Data was analyzed by regression and faktor
analyze. The result from this research showed that regression linear analysis from
soil organic matter with index of plasticity has tight relation (r 2 = 0,98) and faktor
analiysis from soil organic matter was the greatest fajtor that effecting soil index
plasticity that as 54,818 %.
Keyword: Soil water content, soil organic matter, clay content index plasticity,
random, regression linear, factor
ii
Universitas Sumatera Utara
Kecamatan Pamatang Sidamanik merupakan salah satu daerah penghasil
komoditas perkebunan. Penelitian ini bertujuan untuk mengetahui hubungan kadar
air tanah dengan indeks plastisitas, bahan organik dengan indeks plastisitas dan
liat dengan indeks plastisitas pada beberapa vegetasi. Penelitian ini dilakukan
metode survei. Sampel diambil dengan metode acak berdasarkan jenis vegetasi
dengan parameter yang diukur yaitu Kadar Air Tanah, Bahan Organik, Kadar Liat
Tanah dan Indeks Plastisitas Tanah. Data diuji dengan analisis regresi dan analisis
faktor. Hasil penelitian menunjukkan bahwa analisis regresi linear bahan organik
dengan indeks plastisitas memiliki hubungan yang erat dan analisis faktor bahan
organik merupakan faktor paling besar yang mempengaruhi indeks plastisitas
tanah yakni 54, 818 %.
Kata kunci: Kadar air tanah, bahan organik, kadar liat, indeks plastisitas, vegetasi,
acak, analisis regresi linier, faktor.
i
Universitas Sumatera Utara
ABSTRACT
District of Pamatang Sidamanik was one of area as producer plantantion
comodity. This research were to know the relation of soil water content with index
plasticity, soil organic matter with index plasticity and clay content with index
plasticity at several vegetation. This research was conducted with survey method.
These samples taken with random method based on vegetation on the soil. The
parameters were determine are soil water content, soil organic matter, clay
content and soil index of plasticity. Data was analyzed by regression and faktor
analyze. The result from this research showed that regression linear analysis from
soil organic matter with index of plasticity has tight relation (r 2 = 0,98) and faktor
analiysis from soil organic matter was the greatest fajtor that effecting soil index
plasticity that as 54,818 %.
Keyword: Soil water content, soil organic matter, clay content index plasticity,
random, regression linear, factor
ii
Universitas Sumatera Utara