DIE RELATIEWE WINSGEWENDHEID VAN SEKERE ALTERNATIEWE BESPROEIINGSTELSELS IN DIE VAALHARTSBESPROEHNGSGEBIED / The relative profitability of certain alternative irrigation systems in the Vaalharts irrigation area

AbstractThis paper, based on historical research on irrigation administration in the Dongping area and on-site investigations into its current state, explores the benefits and problems produced by two institutional changes. As a common pool resource situation, irrigation systems’ “provision” and “appropriation” are two separate issues; any institutional change must thus offer two different solutions. The study concludes that the participatory changes undertaken in the Dongping irrigation area failed, in the end, to resolve the problem of irrigation system sustainability. In particular, it proved difficult for collective action to take place around provision, which led to difficulties in operating the irrigation system.

Download Full-text

AGRONOMIC CHARACTERISTICS OF THE PACOVAN ORGANIC BANANA IN IRRIGATION SYSTEMS IN THE AÇU-RN VALLEY

Revista Caatinga ◽

10.1590/1983-21252018v31n213rc ◽

2018 ◽

Vol 31 (2) ◽

pp. 370-378

Author(s):

JÚLIO JUSTINO DE ARAÚJO ◽

VANDER MENDONÇA ◽

MARIA FRANCISCA SOARES PEREIRA ◽

MATHEUS DE FREITAS SOUZA

Keyword(s):

Irrigation System ◽

Block Design ◽

Sprinkler Irrigation ◽

Tropical Region ◽

Irrigation Systems ◽

Banana Production ◽

Banana Tree ◽

The One ◽

Small Producers ◽

Alternative Irrigation

ABSTRACT The banana tree is grown in an extensive tropical region throughout the world, usually by small producers. The present work had the objective of evaluating irrigation systems in banana production in the Açu-RN Valley, aiming at alternatives so that they can be recommended to farmers in the Açu Valley region. The experiment was carried out in the area of the School Farm of the IFRN Campus Ipanguaçu, located in the municipality of Ipanguaçu-RN. The experiment was carried out in a randomized complete block design with subdivided plots and eight replications. The irrigation systems were: irrigation, drip irrigation, micro sprinkler and alternative irrigation. The plots were composed of eight useful plants with spacing in double rows 4 x 2 x 2 m. Eight characteristics related to production were evaluated: bunch mass (MC); number of leaves (NP); number of fruits per cluster (NFC); mean mass of the leaves (MMP); diameter of the fruit of the second seed (DF2P); length of the fruit of the second seed (CF2P); mean fruit mass (MMF); productivity (Prod). The data were submitted to analysis of variance and the means were compared by the Tukey test at 5% of probability. In the first cycle of production the sprinkler irrigation system was the one that presented better results the productivity of the Pacovan banana tree; in the 3rd cycle the alternative irrigation system was the one that showed better results the productivity of the banana tree; where the electrical conductivity correlated with the sodium adsorption ratio in the irrigation water, contributed to a moderate limitation of use.

Download Full-text

Institutional Performance of Irrigation System in Spatial Dimensions in Semi-Arid Region Timor Island East Nusa Tenggara

International Journal of Current Science Research and Review ◽

10.47191/ijcsrr/v4-i6-15 ◽

2021 ◽

Vol 04 (06) ◽

Author(s):

Ida Nurwiana ◽

Keyword(s):

Surface Water ◽

System Performance ◽

Arid Region ◽

Irrigation System ◽

Institutional Performance ◽

Irrigation Systems ◽

Irrigation Area ◽

Main System ◽

Semi Arid Region ◽

Semi Arid

Thirty-four percent (34.40%) of irrigation areas in Indonesia are under the authority of the central government, 17.89% under the authority of the provincial government and 47.71% are under the authority of the District/Municipality government. Various efforts have been made by the government to improve the performance of surface water irrigation systems that cover 78% of the total irrigation area, however, the performance did not improve significantly. One of the cause is due to the damage of national surface water canals that affect the performance of the irrigation system. The purpose of this study was to analyze the factors that influence the institutional performance of the irrigation system in the spatial dimension in the semi-arid region of Timor Island, East Nusa Tenggara. The spatial approach of the Geographically Weighted Regression (GWR) method was chosen as an alternative approach in the analysis of irrigation system performance because it considers the variability of hydrogeological characteristics and the performance of different irrigation systems in each irrigation area based on their authority. The results of this study indicated that the total cropping intensity had a significant effectand decreased the performance of the irrigation system. The higher rice productivity and the maintenance frequency of the main system (headworks and canals) would improve the performance of the irrigation system. Meanwhile, the lower damage rate of the main system would improve the performance of the irrigation system. Irrigation area under the authority of district/municipality had a lower/worse irrigation system performance than those under the authority of provincial and central governments.

Download Full-text

Peramalan Kebutuhan Air Untuk Penyiapan Lahan Menggunakan Metode Siklis (Studi Kasus Daerah Irigasi Bendungan Batu Bulan Kec.Moyo Hulu)

Unisda Journal of Mathematics and Computer Science (UJMC) ◽

10.52166/ujmc.v5i01.1480 ◽

2019 ◽

Vol 5 (01) ◽

pp. 25-34

Author(s):

Koko Hermanto ◽

Silvia Firda Utami

Keyword(s):

Soil Texture ◽

Irrigation Water ◽

Agricultural Land ◽

Water Discharge ◽

Water Requirements ◽

Irrigation Systems ◽

Irrigation Area ◽

Land Preparation ◽

High Level ◽

Irrigation Agriculture

Abstract. The area of agriculture in the Moyo Hulu sub-district of Sumbawa Regency is 6000 hectares with irrigation water sources from Batu Bulan Dam, which is the largest dam in Sumbawa Regency with an area of 932 hectares. Considering that Sumbawa Regency is one of the regions with a high level of drought, information on irrigation water requirements for land preparation needs to be known because it can optimize the allocation of the use of dam water discharge. And one of the important stages needed in the planning and management of irrigation systems. Based on this, the aim of this study is to forecast water requirements for land preparation in the irrigation area of Batu Bulan Dam by using cyclical methods because the data patterns are cyclical or seasonal. The factors that influence water requirements for preparing agricultural land are topography, hydrology, climatology and soil texture. From these factors, the data is then analysed so that the volume of water preparation needs to be obtained every month so that the results of the analysis can be predicted for the next period. Keyword: Forecasting, Cyclic methods, water requirements for land preparation, irrigation, agriculture. Abstrak. Luas area pertanian di kecamatan Moyo Hulu Kabupaten Sumbawa sebesar 6000 hektar dengan sumber air irigasi dari Bendungan Batu Bulan yang merupakan bendungan terbesar di Kabupaten Sumbawa dengan luas 932 hektar. Mengingat Kabupaten Sumbawa salah satu wilayah dengan tingkat kekeringan yang cukup tinggi maka Informasi kebutuhan air irigasi untuk penyiapan lahan perlu diketahui karena dapat mengoptimalkan pengalokasian pengunaan debit air bendungan. Serta salah satu tahap penting yang diperlukan dalam perencanaan dan pengelolaan sistem irigasi. Berdasarkan hal tersebut tujuan dari penelitian ini adalah meramalkan kebutuhan air untuk penyiapan lahan di daerah irigasi Bendungan Batu Bulan dengan menngunakan metode siklis karena pola datanya bersifat siklis atau musiman. Adapun faktor-faktor yang mempengaruhi kebutuhan air untuk penyiapan lahan pertanian adalah topografi, hidrologi, klimatologi dan tekstur tanah. Dari data-data faktor tersebut selanjutnya dianalisa sehingga diperoleh volume kebutuhan air penyiapan lahan setiap bulannya sehingga dari hasil analisa tersebut dapat diramalkan untuk periode berikutnya. Keyword: Peramalan, metode Siklis,Kebutuhan air penyiapan lahan, irigasi, pertanian.

Download Full-text

A 2020 Vision of Subsurface Drip Irrigation in the U.S.

Transactions of the ASABE ◽

10.13031/trans.14555 ◽

2021 ◽

Vol 64 (4) ◽

pp. 1319-1343

Author(s):

Freddie R. Lamm ◽

Paul D. Colaizzi ◽

Ronald B. Sorensen ◽

James P. Bordovsky ◽

Mark Dougherty ◽

...

Keyword(s):

Best Management Practices ◽

Drip Irrigation ◽

Management Practices ◽

Subsurface Drip Irrigation ◽

List Type ◽

Commercial Agriculture ◽

Irrigation Systems ◽

Subsurface Drip ◽

The U.S ◽

Alternative Irrigation

HighlightsSubsurface drip irrigation (SDI) has continued to expand in irrigation area within the U.S. during the last 15 years.Research with SDI continues for multiple crop types (fiber, grain and oilseed, horticultural, forage, and turf).SDI usage on many crops has matured through research and development of appropriate strategies and technologiesDespite some persistent challenges to successful use of SDI, important opportunities exist for further adoption.Abstract. Subsurface drip irrigation (SDI) offers several advantages over alternative irrigation systems when it is designed and installed correctly and when best management practices are adopted. These advantages include the ability to apply water and nutrients directly and efficiently within the crop root zone. Disadvantages of SDI in commercial agriculture relative to alternative irrigation systems include greater capital cost per unit land area (except for small land parcels), unfamiliar management and maintenance protocols that can exacerbate the potential for emitter clogging, the visibility of system attributes (components and design characteristics) and performance, and the susceptibility to damage (i.e., rodents and tillage) of the subsurface driplines. Despite these disadvantages, SDI continues to be adopted in commercial agriculture in the U.S., and research efforts to evaluate and develop SDI systems continue as well. This article summarizes recent progress in research (2010 to 2020) and the status of commercial adoption of SDI, along with a discussion of current challenges and future opportunities. Keywords: Drip Irrigation, Irrigation, Irrigation systems, Microirrigation, SDI, Water management.

Download Full-text

Study of Egyptian Cotton to Alternative Irrigation Systems with NPK Rates and Frequencies Under Two Planting Dates

Assiut Journal of Agricultural Sciences ◽

10.21608/ajas.2016.918 ◽

2016 ◽

Vol 47 (4) ◽

pp. 52-71

Keyword(s):

Irrigation Systems ◽

Planting Dates ◽

Egyptian Cotton ◽

Alternative Irrigation

Download Full-text

The synergy between water conservation and economic profitability of adopting alternative irrigation systems for cotton production in the Texas High Plains

Agricultural Water Management ◽

10.1016/j.agwat.2021.107386 ◽

2022 ◽

Vol 262 ◽

pp. 107386

Author(s):

Yubing Fan ◽

Sushil K. Himanshu ◽

Srinivasulu Ale ◽

Paul B. DeLaune ◽

Tian Zhang ◽

...

Keyword(s):

Water Conservation ◽

High Plains ◽

Cotton Production ◽

Irrigation Systems ◽

Texas High Plains ◽

Alternative Irrigation

Download Full-text

Weed Community Dynamics and System Productivity in Alternative Irrigation Systems in California Rice

Weed Science ◽

10.1614/ws-d-16-00064.1 ◽

2016 ◽

Vol 65 (1) ◽

pp. 177-188 ◽

Cited By ~ 3

Author(s):

Whitney B. Brim-DeForest ◽

Kassim Al-Khatib ◽

Bruce A. Linquist ◽

Albert J. Fischer

Keyword(s):

Control System ◽

Community Dynamics ◽

Plant Density ◽

Limiting Factors ◽

Canopy Closure ◽

Weed Species ◽

Irrigation Systems ◽

System Productivity ◽

Relative Cover ◽

Alternative Irrigation

Over the last 10 yr, California has experienced a series of ever-worsening droughts. Rice, traditionally a flooded crop, has come under increasing scrutiny with respect to its water use, leading to proposals to evaluate alternative irrigation systems. For growers, weed competition is one of the most limiting factors to maintaining high yields, so understanding the shifts among species in weed communities under the proposed alternative irrigation systems is vital. A field study was conducted from 2012 to 2014 to compare weed population and growth dynamics with three irrigation systems: (1) a conventional water-seeded control system (WS-Control), with a permanent flood of 10 to 15 cm from planting until 1 mo prior to harvest; (2) a water-seeded alternate wet and dry system (WS-AWD), with the field flooded from planting until canopy closure, after which floodwater was allowed to subside and the field was reflooded when the soil volumetric water content reached 35%; and (3) a drill-seeded alternate wet and dry system (DS-AWD), with rice drill seeded and then flush irrigated to establish the crop, after which the field was flooded until canopy closure and then underwent an alternate wet and dry (AWD) treatment similar to WS-AWD. In the AWD treatments, there were two drying periods, neither of which occurred after the heading stage. The dynamics of major weed species were evaluated using plant density counts (2012) and relative cover and biomass (2013 and 2014). Grasses (sprangletop and watergrass species) dominated the DS-AWD system; sedges, broadleaves, and grasses dominated both WS systems. The WS-AWD system increased smallflower umbrella sedge relative cover at canopy closure, relative dry weight at harvest, and percent frequency when compared with the WS-Control system. Yields did not differ across treatments when weeds were controlled (P>0.05); in the absence of herbicides, yields in the WS-AWD were equivalent to the WS-Control (ranging from 40 to 65% of the herbicide-treated yields) and zero in the DS-AWD due to weed pressure.

Download Full-text