Soil Management Systems Improve Water Use Efficiency of Rainfed Rice in the Semi-Arid Tropics of Southern Lombok, Eastern Indonesia

Mahrup,; Borrell, Andrew; Ma'shum, Mansur; Kusnarta, I Gusti Made; Sukartono,; Tisdall, J. M.; Gill, Jaikirat.

doi:10.1626/pps.8.342

Cited by 10 publications

(6 citation statements)

References 4 publications

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“…Numerous studies have been conducted to reduce S&P (Sharma et al, 1995;Borrell et al, 1997;Roel et al, 1999;Bouman and Tuong, 2001;Pirmoradian et al, 2004;Mahrup et al, 2005;Kato et al, 2009;de Vries et al, 2010), and these studies finally resulted in higher water use efficiency (WUE). Although S&P is a major component in water loss, we focused on the suppression of surface water evaporation to achieve a high WUE in this study because a large amount of water loss also occurs during the early growth period by surface water evaporation (Adachi et al, 1995;Cabangon et al, 2002).…”

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confidence: 99%

Role of Canopy Coverage in Water Use Efficiency of Lowland Rice in Early Growth Period in Semi-Arid Region

Suzuki

Ohta

Izumi

et al. 2013

Plant Production Science

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An appropriate combination of rice cultivar and cropping system that maximizes water use efficiency (WUE) may improve yield of rainfed lowland rice. In the paddy field, a large amount of water is consumed by evaporation during the early growth period, and it can be reduced by canopy coverage especially in semi-arid regions. Therefore, we evaluated the role of canopy coverage in WUE of rice in the early growth period in semi-arid region. A pot experiment was conducted in Namibia to investigate the genotypic and species difference in WUE, and another pot and a field experiment were conducted to investigate the effects of planting density on WUE. Although no significant difference was observed among species, the mean WUE was in the decreasing order of Oryza sativa, and Oryza glaberrima followed by the interspecific progenies including NERICA. In contrast, there was a significant difference in WUE at the genotypic level. Highly tillering genotypes such as WAB1159-2-12-11-5-1 and WITA 2 showed a high WUE. Furthermore, WUE was significantly correlated with the number of tillers (R 2 = 0.453), and higher planting density resulted in a higher WUE. In contrast, stomatal conductance had no significant correlation with WUE (R 2 = 0.081). Thus, the physical conditions affected by number of tillers and planting density had greater impacts on WUE than physiological characteristics such as stomatal conductance. The suppression of surface water evaporation by coverage was significant, probably contributing to WUE improvement. To increase WUE in semi-arid regions, we recommend the increase of canopy coverage and higher planting density.

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confidence: 99%

Role of Canopy Coverage in Water Use Efficiency of Lowland Rice in Early Growth Period in Semi-Arid Region

Suzuki

Ohta

Izumi

et al. 2013

Plant Production Science

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“…Hal ini akan memepercepat laju deplesi lengas tanah sehingga struktur rekahan akan merusak perakaran tanaman kedua (i.e. kedelai dan kacang hijau) dan membatasi pertumbuhan dan produksi tanaman (Mahrup et al, 2005).…”

Section: Pendahuluanunclassified

Dynamic of Change in Soil Physical Properties and SoyBean Growth through The Application of Biochar on Lombok Vertisols

Sukartono

Dewi²,

Bakti³

et al. 2023

JBT

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Vertisol is a type of soil whose mineral fraction is dominated by 2:1 type clay minerals (smectite) which have the property of swelling-shrinking periodically as the soil water content changes. However, these physical properties can be improved by the application of biochar so that it can support plant growth. The aim of this study was to evaluate the effect of biochar on changes in the physical characteristics of vertisols soils and growth performance of soybean plants. This research was conducted in Kawo Village, Pujut District, Central Lombok. This study was designed to test the application of two types of biochar, namely rice husk biochar (BS) and corn cob biochar (BJ) at several doses, namely 0, 15, 30 and 60 g/kg of vertisols soil and design using a randomized block design with 6 replications. The parameters measured were unit weight, soil density, porosity, soil tensile strength, available water capacity, aggregate stability, cole value, crack pattern and soybean growth test. The results showed that the application of biochar could improve the physical properties of vertisol soil and also has implications for improving the growth of soybean plants. Observational data showed that a dose of 60 g/kg of biochar, both rice husk and corn cob biochar, showed better changes in soil physical properties compared to biochar doses of 15 g/kg, 30 g/kg and without the addition of biochar. Besides that, the treatment of rice husk and corn cob biochar at a dose of 60 g/kg gave better vegetative growth of soybean plants.

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“…Lombok has an area of 4,619 km 2 and spans 60 km by 80 km at its widest point. Located just at the Wallace line, rainfall for Southern Lombok is noted at 948 mm and 1665 mm at 100 meters above sea level and 180 meters above sea level respectively [6]. East Lombok gets roughly 700 mm per year.…”

Section: Study Areamentioning

confidence: 99%

Farmer Water Management Strategies for Dry Season Water Shortages in Central Lombok, Indonesia

Klock¹,

Sjah²

2011

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This paper examines how farmers in central Lombok have organized themselves to manage agricultural water colle- ctively and to adapt to seasonally dry conditions. We interviewed eighteen village heads from October to December 2006. One of our questions we posed prior to field interviews was what might be the social and technical coping strategies that have allowed farmers to survive the lengthy dry seasons under the high population density of Lombok island. Some examples of organizational structure and practices in Central Lombok are presented. There were several common water management strategies that were revealed from these interviews including: methods of organization, flexible cropping systems, water allocation mechanisms, methods of compromise, alternative payments, and traditional water management practices. The statistical analysis comparing village characteristics and coping strategies suggests a relation between mosque number per village and farmers ability to cope. Farmers have shown their own unique coping strategies in times of water shortages and under decentralization occurring over the past decade. This decentralization involved turning over small scale irrigation systems (under 500 hectares), to the water user associations themselves in order to facilitate more efficient management and maintenance

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Soil Management Systems Improve Water Use Efficiency of Rainfed Rice in the Semi-Arid Tropics of Southern Lombok, Eastern Indonesia

Cited by 10 publications

References 4 publications

Role of Canopy Coverage in Water Use Efficiency of Lowland Rice in Early Growth Period in Semi-Arid Region

Role of Canopy Coverage in Water Use Efficiency of Lowland Rice in Early Growth Period in Semi-Arid Region

Dynamic of Change in Soil Physical Properties and SoyBean Growth through The Application of Biochar on Lombok Vertisols

Farmer Water Management Strategies for Dry Season Water Shortages in Central Lombok, Indonesia

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