Update Artikelilmiah: 50123

HAFIZHAN ZIDQY PANGESTU

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Abstrak (Bhs. Indonesia)

Penggunaan traktor roda 4 dapat meningkatkan efisiensi pengolahan tanah, namun berpotensi menyebabkan pemadatan tanah yang berdampak negatif bagi pertumbuhan tanaman. Penelitian ini bertujuan untuk mengkaji pengaruh perbedaan tekanan angin ban traktor roda 4 terhadap tingkat pemadatan tanah hingga kedalaman 0 – 50 cm pada 12 bulan setelah perlintasan traktor, serta menganalisis hubungan antar sifat fisik tanah. Penelitian menggunakan Rancangan Acak Lengkap dengan empat taraf perlakuan, yaitu tanpa perlintasan traktor (T0), 7 psi (T7), 15 psi (T15), dan 20 psi (T20), serta lima kedalaman tanah (0 – 10, 10 – 20, 20 – 30, 30 – 40, dan 40 – 50 cm). Variabel yang diamati meliputi dry bulk density, porositas, kadar air tanah, dan konduktivitas hidrolik jenuh.

Hasil penelitian menunjukkan bahwa peningkatan tekanan angin ban traktor meningkatkan dry bulk density, namun menurunkan porositas, kadar air, dan konduktivitas hidrolik jenuh. Semakin bertambah kedalaman tanah, tingkat pemadatan menurun, disertai peningkatan porositas, kadar air, dan konduktivitas hidrolik jenuh. Analisis regresi menunjukkan bahwa dry bulk density berhubungan negatif dengan konduktivitas hidrolik jenuh, sedangkan porositas dan kadar air berhubungan positif. Dibandingkan 0 dan 6 bulan setelah perlintasan, pada 12 bulan setelah perlintasan terjadi peningkatan dry bulk density dan penurunan porositas, kadar air, serta konduktivitas hidrolik jenuh.

Abtrak (Bhs. Inggris)

The use of four-wheeled tractors improves tillage efficiency but potentially causes soil compaction, which negatively affects plant growth. This study aimed to evaluate the effect of different tire pressures of a four-wheeled tractor on soil compaction up to 0–50 cm depth at 12 months after tractor passes and to analyze the relationship among soil physical properties. A Completely Randomized Design was applied with four treatments: no tractor pass (T0), 7 psi (T7), 15 psi (T15), and 20 psi (T20), and five soil depths (0–10, 10–20, 20–30, 30–40, and 40–50 cm). Observed variables included dry bulk density, porosity, soil water content, and saturated hydraulic conductivity.

The results showed that increasing tractor tire pressure increased dry bulk density, while decreasing porosity, soil water content, and saturated hydraulic conductivity. With increasing soil depth, compaction decreased, accompanied by higher porosity, water content, and saturated hydraulic conductivity. Regression analysis indicated that dry bulk density was negatively correlated with saturated hydraulic conductivity, whereas porosity and water content were positively correlated. Compared to 0 and 6 months after tractor passes, at 12 months, dry bulk density increased while porosity, water content, and saturated hydraulic conductivity decreased.

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