LAND SUITABILITY FOR RICE FIELD AND CONSERVATION PLANNING IN HO WATERSHED, TABANAN REGENCY, BALI

2 P061 Endah Wahyurini Propagation Of Arrowroot Plants In Vitro For The Agroforestry Environment Development 3 P062 Lelanti Peniwiratri and Dyah Arbiwati Potential Of Kirinyuh (Chromolaenaodorata) And Cow Fertilizer To Increase The Nitrogen Uptake

Of Tomato (Lycopersicumesculentum L.) On Sandy Beach Soil

4 P080 Tuti Setyaningrum and Dyah Arbiwati The Role Of Guano Phosphate In Improving The Quality Of Compost From Waste Of Household And Mushroom Media In Supporting The Zero Waste Concept

5 P082 Tutut Wirawati, Heti Herastuti and Husain Kasim Increasing The Performance Of Bougainvillea With Top Grafting Model For The Green Line In Urban Environment

6 P099 Sumarwoto and Sugeng Priyanto The Efforts To Improve The Quality Of Growing Bulbil Iles-Iles (Amorphophallus Muelleri Blume) With Oligo Chitosan Immersion

7 P164 I Made Diarta and Luh Komang Merawati The Effect Of Efishery And Probiotic Dosage On Growth Rate And Survival Of Tilapia

8 P165 Ni Made Trigunasih and Putu Perdana Kusuma Wiguna Land Suitability For Rice Field And Conservation Planning In Ho Watershed, Tabanan Regency, Bali Province, Indonesia

10.15-12.00 Parallel Session 1D (Bedugul room)

No. Paper ID Authors Tittle

1 P014 Khairina Natsir, Agus Zainul Arifin and Made Setini The Influence Of Income And Financial Literacy On Financial Satisfaction Through Financial Behavior As Mediation Variable

2 P022 Syafieq Fahlevi Almassawa and Baharuddin Saga Population Movement, Transportation Mode And Economic Relationship, South Tangerang City With Surrounding Areas

3 P030 Kartika Nuringsih and Nuryasman Propensity For Sustainable Entrepreneurship: The Perceived Among Owners Of Mses At Small County In Yogyakarta, Indonesia

4 P037 Yuhainis Abdul Talib, Nor Aini Salleh and Kharizam Ismail Strategic Facilities Management Approach In Australian Public Heathcare Organisation 5 P051 Dian Tariningsih, Putu Kepramareni and Putu Lasmi

Yuliyanthi Sapanca Impact Of Probiotics Supplementation On Financial Benefits Of Tilapia Nursery Farming 6 P053 Alejandro Betancourt, Javier Ramos and Eszter Wirth Business Cycle Impact On Pollution Levels In The City Of Madrid Using Functional Data

7 P133 I Gede Adiputra and Nyoman Suprastha The Influence Of Financial Decision And Corporate Social Responsibility On Value Of The Firm:

Evidences From Manufacturing Companies In Indonesia

8 P155 Nor Hisham Bin Md Saman, Indera Syahrul Mat Radzuan,

Mohd Sabri Mohd Arip and Khairil Afiq Ahmad Free, Prior, Informed Consent (Fpic) For Malaysia'S Ulu Jelai Hydroelectric Project (UJHP):

Indigenous Rights, A Conditional Trinity And Credibility

12.00 - 13.00 Lunch (Sanur Harum Restaurant)

13.00 - 14.45 Parallel Session 2A (Denpasar room - Hall)

No. Paper ID Authors Tittle

1 P015 Ahmad Zamil Zakaria, Melasutra Md Dali and Hazreena

Hussein Marketing And Promoting The Concept Of Malaysian Heritage Garden

2 P041

Nur'Ain Ismail, Tengku Nur Hazleen Tengku Abdul Aziz, Noraini Md Zain, Mohammad Nasharudine Shuib and Mohd Nasurudin Hasbullah

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3 P043 Chanrachna Nou and Sasima Charoenkit The Potential Of Green Infrastructure (Gi) For Reducing Stormwater Runoff In A Phnom Penh Neighborhood

4 P046

Asniza Hamimi Abdul Tharim, Fadhlizil Fariz Abdul Munir, Farid Al Hakeem Yuserrie, Ahmad Faiz Hassan Naziri, Sayed Muhammad Aiman Sayed Abdul Khair and Zaiwannizar Zainal Abidin

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5 P060 Syamim Jaafar, Nor Aini Salleh, Mohd Zaki Arif and Suwaibatul Islamiyah Abdullah Sani

An Empirical Investigation On The Relationship Between Property Manager'S Competencies And Property Management Performance In Green Certified Office Buildings

6 P077 Nur Ainaa Azmi, Haryati Isa, Siti Rasidah Sakip and Puteri Rohani

The Significance On The Compliances Of Person With Disabilities (Pwds) Facilities Towards Social Sustainability (Socsas)

7 P101 Rhisa Suprapto The Environmental Thermal Comfort Analysis Of Public Space In Jetayu Park, Pekalongan City

8 P159 Ayu Kurnia Permatasari, Teguh Hariyanto and

Muhammad Taufik Total Suspended Solid (Tss) Distribution Mapping Using Satellite Images And In Situ Data (Case Study : Porong River Estuary, Sidoarjo)

13.00 - 14.45 Parallel Session 2B (Kintamani room)

No. Paper ID Authors Tittle

1 P002 Wayan Suparta Application Of Anfis Technique For Prediction Of Rainfall In The South Tangerang City 2 P020 Ben Rahman Prediction Text Mining For Market Segment Based On Twitter Data Using Method Time Series

LAND SUITABILITY FOR RICE FIELD AND CONSERVATION PLANNING IN HO WATERSHED, TABANAN REGENCY, BALI

PROVINCE, INDONESIA

Ni Made TRIGUNASIH

¹

, Putu Perdana Kusuma WIGUNA

²

ABSTRACT:

This study aims to determine the actual extent of land use in the Ho watershed, to determine the suitability of paddy fields and their limiting factors and provide direction for land use in the Ho watershed of Tabanan Regency. Land characteristics as a determinant of land suitability observed include: annual mean temperature, water availability; rooting media;

availability of oxygen; nutrient retention, CEC, BS, pH, and organic matter; nutrients available; erosion; flood hazard; land preparation. Land suitability assessment is done by matching the quality of the land with the requirements for growing rice. The results showed that the actual land suitability for rice field was classified as not suitable (N) and marginal suitable (S3) with limiting factors: erosion hazard (slope and erosion hazard) and nutrient availability (P-available). Potential land suitability for rice field is classified as very suitable (S1) to marginal suitable (S3) with temperature limiting factors and erosion (slope) hazards.

Efforts to improve must be done by adding P fertilizer to areas classified as very low soil Potasium content and maintenance of terraces, especially rice fields with a slope of> 8% to overcome/prevent erosion and landslides.

Key-words: Land suitability, land characteristics, conservation planning

1

Udayana University, Faculty of Agriculture, Kampus Bukit Jimbaran, Badung, Bali. 80361, Indonesia. trigunasih@unud.ac.id;

2

Udayana University, Faculty of Agriculture, Kampus Bukit Jimbaran, Badung, Bali. 80361,

Indonesia. wiguna@unud.ac.id.

Ni Made Trigunasih ^,

Putu Perdana Kusuma Wiguna

Faculty of Agriculture, Udayana University, Indonesia

Land Suitability For Rice Field and Conservation Planning

in Ho Watershed, Tabanan Regency, Bali Province, Indonesia

CUSME 2020:

Urban Life and Technology

2020 International Conference On Urban Sustainability, Environment and Engineering

January 20-21, 2020

Prime Plaza Hotel Sanur, Bali - Indonesia

Introduction

Rice is an important food crop for human life, especially in Bali, Indonesia.

In order to improve the welfare of the farming community and soil conservation, landuses must be in accordance with the suitability of the land, especially to ricefields and its management must meet the principles of soil and water conservation.

Properly mapping agricultural land suitability is needed to manage current and

future agricultural land use, and for decision makers to develop strategies for

sustainable use of land resources.

Introduction

The research location was carried out in the Ho Watershed, Tabanan.

Administratively the Ho watershed is located in two sub-districts in Tabanan Regency, Bali, Indonesia, namely Kerambitan and Penebel sub-district. Astronomically, Ho Watershed is located at n 115 ^o 01 '26.

3 "- 115 ^o 09' 04.9" East and 8 ^o 16 '30.2 "-8 ^o 34' 03.7" South.

Methodology

Before physical data collection activities are carried out in the field, detailed land units are overlaid from slope maps, climate maps, soil type maps and land use maps using GIS software. Land unit map functions to direct

sampling in the field. Each land unit is sampled proportionally to its area.

Sampling is done by transect in a sloped area and with a grid system in a flat area. Soil samples are taken in layers at a depth of 0 - 30 cm, whereas to determine the effective depth is continued up to a depth of 150 cm for soils classified as deep or until lytic contact in shallow soils.

All data taken from the drilling results are then evaluated in the field, to obtain

representative samples. Each soil sample then analyzed in a laboratory to

determine the characteristics of the soil. The characteristics of the soil to be

analyzed are Soil texture, Organic C, N- Total, P- available, K- available,

Cation Exchange Capacity (CEC), Base Saturation (KB), soil pH, Soil

permeability, and salinity.

Result and Discussions

Delineation of land units is done through overlapping 4 types of maps, namely land, climate, slope and land use maps.

Land Unit Analysis

Land

Unit Main

material Physiography Topography Soil Type Slope Landuse I Intermediary

Volkan Ash Beach Ridge Flat, Grayish Bro

wn Regosol 0-8 % Agricultural II Ash and Inter

mediary

Volkan Tuff Volcanic Wavy until hilly

Yellowish Brown

Latosol 0-8 % Agricultural III Ash and Inter

mediary

Volkan Tuff Volcanic Wavy until hilly

Yellowish Brown

Latosol 8-15 % Agricultural IV Ash and Inter

mediary

Volkan Tuff Volcanic Wavy until hilly

Yellowish Brown Latosol

15-25

% Agricultural V Ash and Inter

mediary

Volkan Tuff Volcanic Wavy until hilly

Yellowish Brown Latosol

25-40

% Agricultural VI Ash and Inter

mediary

Volkan Tuff Volcanic Wavy until hilly

Grayish Brown Andosol

25-40

% Agricultural

Result and Discussions

Land Unit Analysis

Land units is mapped through overlaying 4 types of maps, na mely land, climate, slope and la nd use maps

There are six land units and six

samples to be anaysed in the

lab

Result and Discussions

The results of the actual land suitability assessment are assessed from matchi ng between the quality/characteristics of the land with the conditions for gro wing rice, then the suitability class of ricefields can be determined.

Based on the assessment of actual land suitability for rice plants, not suitable (N) in SHL III (Mengesta Village), SHL IV (Penatahan village), SHL V (Wangaya Gede Village) and SLH VI (Jatiluih Village) and conditional (S3) found in SHL I (Beraban Village) and SHL II (Tangguntiti Village). The suitability of the actual l and for ricefields in the Ho Watershed with limiting factors in erosion hazard ous land quality, namely slope characteristics and erosion hazard, and nutrien t availability land quality, namely P-available characteristics.

Land Suitability Analysis

Result and Discussions

Based on the assessment of the actual land suitability for rife fields in the Ho W atershed which classified as unsuitable (N) and conditionally suitable (S3) with the limiting factors are erosion hazard, land quality ie slope characteristics, erosi on hazards, and soil nutrient namely P-available characteristics.

The limiting factors of erosion hazard and the availability of P nutrient are very low, so by improving the limiting factors so that the actual land suitability can be increased to the potential land suitability.

Potential suitability for ricefields in the Ho Watershed is very suitable (S1) to marginal suitable (S3) with limiting factors: temperature (for Mengesta, Wangaya Gede and Jatiluwih Village), and erosion hazards.

Suitability of S1 land (very appropriate) is found in the downstream of Ho Water

shed, locate in SHL I (Desa Beraban) and SHL II in Tangguntiti Village.

Result and Discussions

Result and Discussions

Actual Potential

Result and Discussions

The locations that have very steep slopes, maintenance of terraces are n

eeded to overcome erosion. The direction of land use can be obtained from

the suitability of agro ecosystem land with the limiting factors in each one

homogeneous land (SHL). Directions for land use that can be recommende

d for using rice fields are by limiting factor of the level of erosion hazard

by overcome by repairing and maintaining the existing bench terrace and

planting reinforcement terrace plants and limiting factor of the low availabi

lity of P-available nutrients by overcome by adding fertilizers that contain

P elements such as SP36.

Conclusions

The actual land suitability for ricefields in the Ho Watershed is classified as inappropriate (N) in SHL III (Mengesta Village), SHL IV (Penatahan village), SHL V (Wangaya Gede Village) and SLH VI (Jatiluih Village) and according to conditional (S3) found in SHL I (Beraban Village) and SHL II (Tangguntiti Village). The limiting factor in the actual suitability of land is the quality of the erosion hazard land, namely the slope and erosion hazard and the availability of nutrient s, P-available.

Potential suitability for rice field in the Ho Watershed is very suitable (S1) to marginal suitable (S3) with limiting factors: temperature (for Mengesta, Wangaya Gede and Jatiluwih), and erosi on (slope) hazards. Land suitability of S1 (very suitable) is found in SHL I (Desa Beraban) and SHL II in Tangguntiti Village.

Directions / recommendations that can be given on the use of rice fields are by repairing and

maintaining existing bench terraces and planting reinforcing terraces and adding fertilizer

containing P elements such as SP36.