Garuda - Garba Rujukan Digital

Winarna Winarna

Indonesian Oil Palm Research Institute

Author-ID : 3464649

Agriculture, Biological Sciences & Forestry

Published : 2 Documents Claim Missing Document

Claim Missing Document

Articles

PERBAIKAN SIFAT-SIFAT DAN PENCEGAHAN HIDROFOBISITAS TANAH GAMBUT DI PERKEBUNAN KELAPA SAWIT MELALUI APLIKASI TERAK BAJA Winarna Winarna; Iput Pradiko; Muhdan Syarovy; Fandi Hidayat
Jurnal Penelitian Kelapa Sawit Vol 24 No 1 (2016): Jurnal Penelitian Kelapa Sawit
Publisher : Pusat Penelitian Kelapa Sawit

Development of oil palm plantation on peatland was faced with hydrophobicity problem caused by over drained. Hydrophobicity could reduce water retention and nutrient availability in the peat soil. Beside of proper water management application, addition of soil ameliorant which contain iron could increase stability and improve peat soil fertility. The study was conducted to obtain the effect of steel slag on peat soil properties and hydrophobicity. In this study, peat soil was incorporated with steel slag and incubated in 60 days period. The research was employed completely randomized design (CRD) factorial 2 x 2 x 4. First factor is peat maturity consists of two levels: sapric (S) and hemic (H), while the second factor is soil moisture which also consist of two levels: field capacity (W1) and dry (under the critical water content) (W2). The third factor is steel slag dosage which consist of four levels: 0 g pot (TB0), 7.17 g pot (TB1), 14.81 g -1 -1 pot (TB2), and 22.44 g pot (TB3). The result showed that application of steel slag significantly increase of soil pH, ash content, and water retention at pF 4.2. Furthermore, application of steel slag significantly reduce time for water reabsorption (wettability) in sapric. On the other hand, there are negative corellation between water penetration and soil pH, ash content, and water retention at pF 4.2. Overall, application of steel slag could increase wettability and prevent peat soil hydrophobicity.

SIMULASI DAN ANALISIS SISTEM TATA KELOLA AIR DI LAHAN PASANG SURUT: STUDI AWAL PADA PERKEBUNAN KELAPA SAWIT DI KALIMANTAN SELATAN Henny Lydiasari; Winarna Winarna
Jurnal Penelitian Kelapa Sawit Vol 27 No 3 (2019): Jurnal Penelitian Kelapa Sawit
Publisher : Pusat Penelitian Kelapa Sawit

Oil palm plantations on tidal swamp land are increasing with the potential of land reach 20.1 million hectares due to unavailable mineral land which can be used. The limitation of optimal land for oil palm in Indonesia is currently a factor that encourages the use of sub-optimal land, one of which is tidal land. The use of tidal land has certain constraints such as soil acidity, low soil fertility, poor soil drainage conditions, lack of water and increased pyrite oxidation during dry periods which have a negative impact on oil palm growth and productivity. This preliminary study examines the effects of existing water governance to get the right solution and can be applied in the future. Modeling on HEC-RAS 4.1 software produces a simulation of the physical phenomena of channels in the land. The overall results show that the condition of the water governance system in the observation block is not optimal so that the inundated areas range from 65% due to the lack of good water management systems such as the drainage of the canals, the lack of water buildings and even the sluices so that in an uncontrolled area. This obstacle can be overcome by improving water management, such as canal washing, construction of water buildings, including culverts, bridges, crop harvesting, stoplogs and sluice gates. Water management system plays an important role in controlling water in the garden area so that in the rainy season, water can be channeled to outlets and in the dry season, water can survive in the garden area.This study is expected to be a reference in improving the water management system in that location.

Title

Found 2 Documents
Search

Abstract

Abstract

Title Search

Found 2 Documents Search

Abstract

Abstract

Title

Found 2 Documents
Search