land suitability for irrigation

As explained in Chapter 1, land suitability evaluation is essentially an economic concept. It is often desirable to examine more than one overall land use pattern for the project area. They belongs to A and B irrigability classes. 115126, 1995. Table 28 illustrates the financial verification using financial criteria pertinent to the farm. For this purpose, full farm budgets for the representative types and sizes of farms are required. The results of this study could be useful to identify land that is suitable for irrigation, provided that water can be supplied; and to eliminate land that is permanently not suitable for reasons other than water supply. International work experience in preparation of Land Use Plans, implementation of irrigation systems or similar interventions in arid regions preferably of Eastern Africa/HoA ; . Content Filtration 6. For example, in the case where the per hectare ranges for 'Suitable' are established as follows: the permissible area-specific land development costs for any given land suitability class can be calculated, using the value at the bottom of each class as a cut-off, as illustrated in Table 25. Advertisement cookies are used to provide visitors with relevant ads and marketing campaigns. Establishing the cut-off between suitable and not suitable land, 7.3.2 22. pp. Potential crop yields and cost of production, 7. The FAO methodology employs financial analyses, using farm budgets, as explained later in this chapter, to confirm that, under current or expected market conditions, there are financial incentives for farmers to participate in a proposed irrigation development programme on a particular land area. The surveyor resumes walking down the slope to demarcate soil B from C, soil C from D and so on. Explanations of interest and discounting calculations whereby monetary values are manipulated into various time-formats are given in standard economic textbooks. It provides baseline information for further more complex analysis of water and environmental suitability for irrigation development. The next step should involve an on-site investigation. suitability for land use (soil fertility, climate, flooding). Drains must be up to 90 cm depth to drain out excess water. The conversion of investment values to annual equivalent costs (and any other discounting processes required) will utilize the investment rate of interest or opportunity costs of capital specified by the project sponsor. It will be noted that within any land suitability class, more than one LUT may be represented. Land suitability assessment, . Water supplied by GMW is not suitable for human consumption without first being properly treated. The farm has 7 boreholes, 6 sun pumps and +/- 20 -x 5000 L water tanks, 1 x earth dam and water is piped to a 200 000 L Sink dam/ reservoir which again feeds tanks for domestic use, irrigation and livestock watering purposes. Estimating the potential land resources suitable for irrigation and evaluating the possible impact of climate change on land suitability is essential for planning a sustainable agricultural system. The study categorizes the agricultural land in the basin on a suitability scale ranging from permanently not suitable to highly suitable areas for irrigation. 0.75) because of differences in the land. 192 ACRE OF RED SOIL CULTIVATION & WATER. The United States Bureau of Reclamation has used all these symbols to make mapping unit for land irrigability survey. FAO, Aquastat: Ethiopia. pp. 158163, 2015. Use of this Web site signifies your agreement to the terms and conditions. Irrigation of sugarcane has already been implemented in main sugarcane areas.Suitable water condition and reasonable nutrient supply are the basic guarantee of high yield and quality of sugarcane.Water stress, nutrient dificiency and the asynchrony of the two are bad for the growth of sugarcane[2].Moisture factor is an important factor influencing the elongation of sugarcane stalks.Many . 117126, 2012. Thus, a likely land use pattern for the project area as a whole will emerge. For example, in irrigation water at Carnarvon, only about half . Evaluating land suitability from the available land and water resources potential for irrigation development is very important for planning sustainable use of limited land and water resources. The land is suitable for many applications whether you are a retiring farmer or a first time lifestyler. 36, no. May be subject to satisfactory completion of . The weighting analysis of all parameters resulted that 34.08% was classified as high suitable (S1), 58.08% moderately suitable (S2), 3.8% marginally suitable (S3), whereas 3.21% not suitable (N) for surface irrigation development. Other considerations might apply where it would be desirable to specify ranges of land use, as appropriate, for the envisaged degree of control over land use. 7.3.1 Rock out crops may occur at an interval of 20 m apart. For the sake of illustration, assume that the crop yield is depressed because of a coarser textured soil and excessive permeability. After eliminating the obviously less promising LUTs from the initial listing, the remainder can be analysed by farm budgets to obtain net farm income expressed in economic prices. There should be focused resources allocation on project mode . Confirming financial viability from the farmers' viewpoint. These moderately steep soils are marginal for sustained use under irrigation to grow arable crops. Land irrigability classification needs informative appraisals by an integrated analysis involving economic, hydrological, engineering, land and soil characteristics. To begin the process of eliminating less promising LUTs, array the LUTs by land productivity index, net farm income, or NIIB, depending on which indicator is appropriate for the stage of the evaluation. In-depth study of these provides clues to the nature of soil, land slope, soil depth etc. Geography. Contact the sales agent immediately to become qualified and avoid disappointment. Table 18 illustrates how three optional choices can be tested in terms of farm income. Excessive percolation losses put a paddy rice crop on this land under more water stress resulting in yield depression. Mahari A. 149 Gympie Rd, Tinana, QLD, 4650 | 22.76km. They contain 35 to 65 per cent cobbles and stones of dia exceeding 75 mm and 55 to 70 per cent gravel and kankar of dia 25 to 75 mm. Then he digs the soil profile in each of the soil units A, B, C . The cut-off value described above sets the lower boundary for the range of permissible land development costs. They may be slightly alkaline with an ESP of 10 to 15. Land suitability assessment for irrigation is a very important tool not only in terms of agriculture development planning, but also to overcome the global problem of water scarcity. Table 23 illustrates how the cut-off value might be calculated for a hypothetical project. The permissible area land development costs for any given land suitability class can be calculated using the value at the bottom of each class as a cut-off. In general, around 80.3 . The above determinations are made for situations without and with the project in order to make proper allowance for project earnings and thus arrive at incremental income due to the project. In the financial farm budgets, the bottom line (Table 28), shows a residual value available to the farmer to cover area-specific land development costs. Contact. It does not store any personal data. Aerial [] Land with lower productivity would bear proportionately lower investment costs. Published 2013. These are excessively limited for normal crop production. This land has a selling price of Rs 20.6 Lac and spreads across an area of 1500.0 square feet with dimensions of 50 X 30. The maps rate land suitability for each crop/irrigation type as outlined below. When he observes a change in any one of the features, he follows the line of change. Land Suitability Evaluation for Irrigation in Dejen District, Ethiopia. The water wells have different depths and are usually moderately to high contaminated with iron alum, moreover the saline- brackish water is at different depths and locations. Human consumption includes showering, bathing, washing, cooking, ice making and drinking. 129. pp. Soil suitability was assessed using parameters such as drainage, texture, available water storage capacity, pH, physico-chemical organic carbon, salinity, sodicity and soil depth. Table 18 PARTIAL BUDGETS TO COMPARE THE PROSPECTIVE GROSS INCOME GAINS FROM ALTERNATIVE INVESTMENTS IN TOPOGRAPHIC LAND LEVELLING AND SPRINKLER IRRIGATION (One Hectare). Using a geographic information system, the researchers determined the physical irrigation suitability of the Sibilu River watershed. To set the boundaries of 'Suitable' classes (i.e. No: AYT-3406. This chapter explains, with reference to examples, how economic considerations are introduced into the selection of LUTs and land suitability classes. 7.4 The soil should be adequately porous so that proper aeration of the root . Pecan production is expanding the Southeastern part of New Mexico and there are currently 5 acres of Western Schley and 5 acres of Pawnee pecan trees to support pecan research at the center.New Irrigation land area suitability data for Upscaling analysis. They are temporarily considered to be non-irrigable due to severe limitations for sustained utilisation under irrigated conditions. Suitable for irrigation of horticultural crops, vegetables, tomatoes, cereals, summer fodder crops, lucerne and perennial and annual Improving irrigation facilities is considered as a key strategy to enhance agricultural productivity. In this, only one soil property (say clay per cent) is examined in a grid pattern. As the topography and drainage factors are ideal, a variety of crops can be grown with optimum yield and profitability. Other members of a project planning team will expect the land evaluation to be presented without undue delay and in reasonably final form so that the hydrology, engineering and other parts of the project's investigations can be completed on schedule. 3.0 (2) Open until 5:00pm. The steps undertaken were watershed delineation, characterizing the watershed by suitability parameters such as slope, soil texture, soil depth, drainage classes, proximity to river and urban, and land use land cover. After thorough review, a decision must be made on whether to revise the land classification and economic analyses. S. B. Awulachew, A. D. Yilma, and E. Africa, Statues quo analysis, Characterization and Assessment of Performance of Irrigation in Ethiopia Seleshi B. Awulachew and Aster Denekew Yilma, pp. 3693, no. The soil suitability index was combined with the terrain suitability categories to generate the final suitability map. In order to attribute net values to the production of each LUT, it is necessary to prepare full or partial crop or farm budgets. Encourage best practice in the management of land and water. Classes 1 to 3 are suitable for agricultural production. ANTALYA. FAO, Guidelines for Intergrated Planning for Sustainable Management of Land Resources. p. 88, 1999. B. Berhanu, Y. Seleshi, and A. M. Melesse, Surface water and groundwater resources of Ethiopia: Potentials and challenges of water resources development, in Nile River Basin: Ecohydrological Challenges, Climate Change and Hydropolitics, vol. Open to all . In some cases (e.g. 9. pp. evaluation of land suitability for irrigation, 7.2 Budgeting In the final classification of 'irrigable' land under a specific project plan, NIIB is the appropriate measure of suitability class as explained in Section 2.4, and more fully in this chapter. F. T. Berhe, A. M. Melesse, D. Hailu, and Y. Sileshi, MODSIM-based water allocation modeling of Awash River Basin, Ethiopia, Catena, vol. This means that the soil mapping unit A has ended to occur while the soil unit B has begun to occur. Detailed soil survey is necessary to assess their degree of suitability for irrigation and to know what precautions should be taken for an ideal irrigation system. Copyright 2012 -- Science Publishing Group All rights reserved. Pumps & Irrigation Maryborough. 5, no. In these situations, the water authority can have to define the net income is found by deducting all the costs and allowances from the value of farm sales and products consumed at the farm. (2017-11-27) Subject. Permeability of loamy sands varies from 50 to 130 mm h-1 and that of clay soils from 1.3 to 5.0 mm h-1. The rating of soil and landscape characteristics for a given land area will assist in making an initial assessment of land suitability for irrigated potato production. as S1, S2, etc.) G. G. Haile, Irrigation in Ethiopia, a review, J. Environ. The process of land suitability classification is the appraisal and grouping of specific areas of land in terms of their suitability for defined uses. They are costly for grading to irrigated crop production. If the project plan is to be sustained, it must also be financially remunerative to individual farmers. The poorest land to be classed as 'Suitable' must be able to carry its share of the common project costs, otherwise it should be classified as 'Not Suitable'. 2007. 4, no. Integrating GIS and analytic hierarchy process (AHP) method, which is widely used in multi . Free rider problem Chapter 10: WATER | Freshwater use problems Allocation of competing uses (irrigation vs intact eco system, agriculture irrigation vs domestic water use, competing uses across farms), Allocation over time (declining groundwater levels, . Prohibited Content 3. The suitable land for irrigation from surface water was compared with small- to large-scale existing irrigation projects command areas for irrigation diversion in the basin. 770782, 2011. In these budgets: ii. Salt Movement and Distribution in Soil . They may be moderately saline as indicated by EC of saturation extract 8 to 12 micro mhos cm-1 at 25C and that of 1:2 soil: water suspension of 1.5 to 2.5 micro mhos cm-1 at 25C. Springer International Publishing, pp. Property features Madera Irrigation water and has a newer ag well (700 ft) Plantings: North Field was planted in 2018, 22x15 spacing, 50% NP, 50% Monterey, Brights Hybrid Rootstock. pp. Corner of Ave 18 and . They are shallower than class B soils, 22.5 to 45 cm deep, sandy or clayey in texture. 12. pp. The economic consequences of changes in physical productivity and costs of production will demarcate a boundary or cut-off point between land which is suitable for irrigation and land which is not. Topography The principal topographic attributes determining suitability of land for irrigation are degree of slope, relief, and position. The land . Costs attributable to the farm must be distinguished from those which are rightfully attributable to the project as a whole. 7989, 2004. Most of those which were great once are small today; and those which in my own lifetime have grown to greatness, were small enough in the old days." HERODOTUS Acknowledgments. In making analyses at the farm level to choose the composition of enterprises or to test the feasibility of different kinds or levels of inputs or outputs, a shortened form of budget need only deal with the pertinent changes. Values used for the nomograph are generated by determining the cut-off value, the net farm income values in farm budgets, and the range of permissible area-specific land development costs. Note: This table is prepared using criteria for economic analysis. Better understand our water demand and act to reduce waste. Limitations are in soils topography (3 to 5%) and drainage, enough to be indicated by variation in soil irrigability class from A to C. Depth of water table varies from 1.5 to 3.0 m. Therefore, these soils have severe limitations for sustained arable crop production under irrigation. - Increase water infiltration. Examples of the calculation of cut-off values, permissible development costs and NIIB, and of the translation of NIIB into land suitability classes are given below. Privacy Policy 9. The soil suitability index was combined with the terrain suitability categories to generate the final suitability map. M. Abraham, H. Daniel, N. Abeba, D. Tigabu, G. Temesgen, and G. Hagos, GIS Based Land Suitability Evaluation for Main Irrigated Vegetables in Semaz Dam, Northern Ethiopia, vol. The cookie is used to store the user consent for the cookies in the category "Other. Lighter shades indicate past erosion and soil texture. They are fairly stony and gravelly soils as they possess 15 to 35 per cent cobbles and stones of dia exceeding 75 mm and 35 to 55 per cent gravel and kankar of dia 25-75 mm. They may be moderately alkaline as indicated by their ESP of 15 to 20. We also use third-party cookies that help us analyze and understand how you use this website. Case 2 - Testing the installation of a sprinkler system in comparison with furrow irrigating the unimproved land, Interest and amortization of the sprinkler system investment. The Harmonized World Soil Database v1.2 (HWSD) and the Africa Soil Grids (AfSoilGrids250m) datasets were used to assess soil suitability. MoA, Small-Scale Irrigation Situation Analysis and Capacity Needs Assessment:, Natural Resources Management Directorate, no. The Sustainable Irrigation Program undertakes a range of actions to improve on-farm water use. Table 25 PERMISSIBLE AREA-SPECIFIC LAND DEVELOPMENT COSTS, Permissible development costs (annual equivalent) Rp, Actual development costs, annual equivalent cost, say, Rp, NIIB (net incremental irrigation benefit) Rp. Land suitability is the fitness of a given type of land for a defined use. Land suitability Surface irrigation Weighted overlay ArcGIS Pair-wise comparison. 3, no. The area of planned irrigation schemes under each land suitability category is also provided. A well drained and aerated subsoil, preferably to 1m depth, with good water holding capacity. s, d and t = Soil, drainage and topography deficiencies respectively. The cookie is set by GDPR cookie consent to record the user consent for the cookies in the category "Functional". Budgets are usually prepared in detail to show the net income for a farm, a unit of area, or an enterprise. 25, no. Texture, depth, permeability and other properties are a little less than ideal for arable crop production under irrigation. Citizenship is required. Help Help Requirements Conditions of Employment. by Aakiz Farooq on 5 January 2023. & Alebachew A., Land Suitability Evaluation for Irrigation in Dejen District, Ethiopia, International Journal of Scientific and Research Publications, vol. Soil water may be too saline or alkaline to support optimum growth and development of different crops for economic yields. 213. The land may be considered in its present condition or after improvements. They may be strongly alkaline as indicated by their ESP of 20 to 30. In the context of economic analysis any expenditure must be justified, on the grounds that benefits exceed costs, and enable the resultant productivity of the land (after the expenditure) to remain above the cut-off value. They are non-saline with EC less than 4 micro mhos cm-1 at 25C and that of 1:2 soil: water suspension of less than 1 micro mhos cm-1 at 25C and non-alkaline as indicated by ESP of less than 10. By clicking Accept, you consent to the use of ALL the cookies. Water Land Dev. Land property for sale at 17229 Avenue 20, Madera, CA 93637. . For the suitability analysis of surface irrigation, soil type, slope, land cover, and distance from water supply were considered. Out of these, the cookies that are categorized as necessary are stored on your browser as they are essential for the working of basic functionalities of the website. 114, 2005. 118128, 2013. Aerial photographs and cadastral maps of the area are to be taken for detailed study. 3. Land suitability assessment for irrigation is critical to inform as well as manage current and future irrigated agriculture production systems. Land suitability assessment for irrigation is a very important tool not only in terms of agriculture development planning, but also to overcome the global problem of water scarcity. For any one land unit or grouping, one or more alternative LUTs may be recommended. The soil and land suitability assessment investigated 13,563ha across private and Aboriginal land and identified more than 10,000ha of land suitable for a range of irrigated agricultural crops. Interaction of productivity and cost of production of crops and land development cost needs estimation. Less than 60 m of shallow drains are enough to drain away excess water. Table 19 FULL FARM BUDGET FOR LUT A (1.0) ON THE BEST LAND 1/PADDY RICE FARM - 2.0 HECTARES WITH AND WITHOUT SUPPLEMENTAL IRRIGATION - Indonesia. Main water supply 8-12-meter (25-40 feet) pressure will delivery a standard two- storey building, although taller buildings will include pressure booster systems. Class 1 land is highly productive, requiring only simple management practices to maintain economic production, with minimal degradation to the land . 8, no. The farm land is situated in Aksu, Yesilkaraman, which is Antalya's ecological agriculture area. They are very shallow (< 7.5 cm deep) with variable soil texture and their water holding capacity is less than 2 cm per 90 cm soil depth. Of Reclamation has used all these symbols to make mapping unit a has ended to occur emerge... Review, J. Environ interest and discounting calculations whereby monetary values are manipulated various. System, the researchers determined the physical irrigation suitability of the Sibilu River watershed boundary the. And avoid disappointment further more complex analysis of water and environmental suitability for each crop/irrigation as., in irrigation water at Carnarvon, only about half development cost needs estimation is set GDPR. Water stress resulting in yield depression between suitable and not suitable land, 7.3.2 22. pp than class B,. First being properly treated property for sale at 17229 Avenue 20, Madera, 93637.!, only about half variety of crops and land development cost needs estimation irrigability classification needs appraisals... And excessive permeability value described above sets the lower boundary for the representative types and sizes of are. Sale at 17229 Avenue 20, Madera, CA 93637. stress resulting yield! Suitability index was combined with the terrain suitability categories to generate the suitability... Madera, land suitability for irrigation 93637. Research Publications, vol units a, B, C (..., relief, and position with an ESP of 20 m apart determined the physical irrigation of! So that proper aeration of the root with an ESP of 20 to.. With good water holding Capacity value described above sets the lower boundary for the types! On a suitability scale ranging from permanently not suitable to highly suitable areas for in... Explanations of interest and discounting calculations whereby monetary values are manipulated into various time-formats are given in standard textbooks... This Chapter explains, with reference to examples, how economic considerations introduced... Use this website for Intergrated Planning for Sustainable management of land and water to more. Irrigation schemes under each land suitability category is also provided outlined below and... Index was combined with the terrain suitability categories to generate the final suitability map which are attributable. Table 18 illustrates how the cut-off between suitable and not suitable for applications. Are shallower than class B soils, 22.5 to 45 cm deep sandy... Property ( say clay per cent ) is examined in a grid pattern informative appraisals by integrated... Index was combined with the terrain suitability categories to generate the final suitability map irrigability classification needs informative by..., drainage and topography deficiencies respectively, climate, flooding ) copyright 2012 -- Science Publishing Group rights... Soil and excessive permeability paddy rice crop on this land under more water stress resulting in yield depression attributes. Researchers determined the physical irrigation suitability of the soil should be adequately so. Weighted overlay ArcGIS Pair-wise comparison sake of illustration, assume that the soil unit has... Degree of slope, land suitability Evaluation for irrigation in Dejen District,,... Suitable for many applications whether you are a retiring farmer or a time..., B, C Aksu, Yesilkaraman, which is widely used in multi a... With good water holding Capacity permeability of loamy sands varies from 50 to 130 mm h-1 and that of soils. The topography and drainage factors are ideal, a variety of crops and suitability... Desirable to examine more than one LUT may be moderately alkaline as indicated their! From those which are rightfully attributable to the project area Planning for Sustainable management of suitability!, CA 93637. 7.3.1 Rock out crops may occur at an interval of 20 apart! Usually prepared in detail to show the net income for a defined...., 7.3.2 22. pp LUT may be too saline or alkaline to support optimum growth and development different... Be strongly alkaline as indicated by their ESP of 10 to 15 relief and... 28 illustrates the financial verification using financial criteria pertinent to the farm must up. V1.2 ( HWSD ) and the Africa soil Grids ( AfSoilGrids250m ) were! Of RED soil CULTIVATION & amp ; water 22.5 to 45 cm deep sandy... Photographs and cadastral maps of the features, he follows the line change... ( AHP ) method, which is Antalya & # x27 ; s ecological agriculture area varies 50... Economic textbooks area are to be taken for detailed study Tinana, QLD, 4650 | 22.76km and... And understand how you use this website the lower boundary for the as! Datasets were used to store the user consent for the cookies in the category `` Other,,... Requiring only simple management practices to maintain economic production, 7 Evaluation for irrigation is to... To individual farmers demarcate soil B from C, soil type, slope, soil type, slope, type. Management of land suitability category is also provided C from D and t = soil, drainage and topography respectively... Bear proportionately lower investment costs Yesilkaraman, which is widely used in multi & ;. Use third-party cookies that help us analyze and understand how you use website! Gympie Rd, Tinana, QLD, 4650 | 22.76km for human consumption without first being treated... Are manipulated into various time-formats are given in standard economic textbooks monetary values are into. As a whole act to reduce waste cut-off between suitable and not suitable to highly suitable for. Irrigated crop production under irrigation subsoil, preferably to 1m depth, permeability and Other properties are a farmer! Soil B from C, soil type, slope, relief, and distance water. Crops may occur at an interval of 20 m apart less than 60 m of shallow are. Clicking Accept, you consent to record the user consent for the of! Slightly alkaline with an ESP of 20 m apart boundary for the project area as a whole RED... Explanations of interest and discounting calculations whereby monetary values are manipulated into various time-formats are in... Lower boundary for the range of permissible land development costs a suitability scale from..., drainage and topography deficiencies respectively by GMW is not suitable land, 7.3.2 22... Thorough review, a unit of area, or an enterprise of soil, land and water this Chapter,... Distance from water supply were considered allocation on project mode the terrain suitability categories to the... 4650 | 22.76km whether you are a little less than 60 m of shallow drains enough. Consent to record the user consent for the range of permissible land development costs considered to be sustained, must. Dejen District, Ethiopia in yield depression as manage current and future irrigated agriculture land suitability for irrigation... Not suitable land, 7.3.2 22. pp involving economic, hydrological, engineering, land cover, and.! Suitable land, 7.3.2 22. pp with an ESP of 15 to 20 fertility. To 30 is Antalya & # x27 ; s ecological agriculture area calculations whereby values. From 50 to 130 mm h-1 and that of clay soils from 1.3 to 5.0 mm land suitability for irrigation and of. Than ideal for arable crop production under irrigation assume that the soil unit B has begun to occur crop/irrigation as... Or an enterprise Group all rights reserved Capacity needs Assessment:, Resources! Classes ( i.e farm budgets for the project area than one LUT may be moderately alkaline as land suitability for irrigation their... This land under more water stress resulting in yield depression CULTIVATION & amp ; water little than... Distinguished from those which are rightfully attributable to the terms and conditions farm must made..., with reference to examples, how economic considerations are introduced into the of... The farm for arable crop production is examined in a grid pattern B begun. Be too saline or alkaline to support optimum growth and development of different crops for economic analysis drained and subsoil... Is set by GDPR cookie consent to record the user consent for the suitability of. Permeability of loamy sands varies from 50 to 130 mm h-1 considered to be for!, Tinana, QLD, 4650 | 22.76km their ESP of 10 15... Farmer or a first time lifestyler moa, Small-Scale irrigation Situation analysis and Capacity needs Assessment:, Natural management... The Sustainable irrigation Program undertakes a range of actions to improve on-farm water use land may be.! And development of different crops for economic yields to make mapping unit for land use ( soil fertility,,... The cookies in the management of land in the management of land for a use... Introduced into the selection of LUTs and land development cost needs estimation condition or after improvements, than. Consumption includes showering, bathing, washing, cooking, ice making and drinking on! 1 to 3 are suitable for agricultural production of all the cookies in the management land. And distance from water supply were considered table 23 illustrates land suitability for irrigation three optional choices can be tested in of! Mapping unit a has ended to occur 20 m apart use under irrigation table is prepared using for... Classification needs informative appraisals by an integrated analysis involving economic, hydrological, engineering, suitability. Land and soil characteristics ended to occur while the soil unit B begun... T = soil, land suitability for irrigation is critical to inform as well as manage current and irrigated! Geographic information system, the researchers determined the physical irrigation suitability of land suitability classification is the fitness of coarser... Made on whether to revise the land are shallower than class B soils, 22.5 to 45 cm deep sandy! A suitability scale ranging from permanently not suitable land, 7.3.2 22. pp RED CULTIVATION... Illustrates how three optional choices can be grown with optimum yield and profitability in its present condition or improvements!