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3 edition of Farm level analysis of irrigated crop production in areas with salinity and drainage problems. found in the catalog.

Farm level analysis of irrigated crop production in areas with salinity and drainage problems.

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Published by Federal-State San Joaquin Valley Drainage Program in Sacramento, CA .
Written in English


The Physical Object
Pagination1 v. :
ID Numbers
Open LibraryOL23299319M

Progress 10/01/99 to 09/30/04 Outputs A broad regional assessment of water value associated with the major water using crops, including alfalfa and sudangrass hay and cotton production was developed based on the spatial distribution of crop yield, rainfall, and ETo data. Generally, irrigation water (IW) yield efficiency (YE) associated with crop production decreases with increasing IW. Read chapter 10 Salts and Trace Elements: How can the United States meet demands for agricultural production while solving the broader range of environmen.


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Farm level analysis of irrigated crop production in areas with salinity and drainage problems. Download PDF EPUB FB2

SALINITY, DRAINAGE AND CROP PRODUCTION IN IRRIGATED AGRICULTURE Joseph Shalhevet1 1Volcani Center, Israel. [email protected] Introduction Soil salinity is the most prevalent and widespread problem in irrigated agriculture. It has, therefore, attracted the attention of the scientific community since the advent of modern agronomic research.

Solutions for salinity problems of irrigated crop production in semiarid areas begin with proper on-farm water management, both irrigation and drainage. San Joaquin Valley has been in the forefront of upgrading the water use efficiencies through improvements in irrigation scheduling in time and amount of water by: 3.

Solutions for salinity problems of irrigated crop production in semiarid areas begin with proper on-farm water management, both irrigation and drainage.

The permissible salinity of a blend depends on the salt tolerance of the crop(s) to be irrigated, the soil type and climate, and the long-term management plan for irrigation and crop production (Minhas and Gupta, ; Rhoades et al., ; Grattan et al., ; Minhas, ).

There is a practical upper limit to the saline component of the Author: P.S. Minhas, Tiago B. Ramos, Alon Ben-Gal, Luis S. Pereira. The salinity drainage issues may be viewed at different spatial and temporal dimensions across the irrigated crop production landscape from the micro scale processes and reactions, intermediate.

farm-level integrated agricultural management model. A set of linked functions calculates the value of the state variable, the drainage salinity; this is a special form of the equation of motion, which includes simultaneous inter-temporal rela-tionships between many periods.

However, it entails an intensive involvement of logical conditions, and henceCited by: 8. Farmer’s Perceived effects of salinity on rice production in the study areas Based on farmers’ perception on the effects of salinity in the study areas, there were variations in the ranking of perceived problem by locations (Table and ).

The PCI values obtained from farmers in Ilonga on the ” ”, “ salinity Author: James Sulonkwiley Dolo, Susan Nchimbi-Msolla, John J. Msaky. Inefficient irrigation and drainage systems are a major cause of excess leakage and increase the risk of salinity and waterlogging in irrigation areas. Poor water distribution on paddocks results in some areas being under-irrigated, causing salts to accumulate (where watertables are high) and other areas being over-irrigated and waterlogged.

Crop production is generally unaffected in areas where the salinity of agricultural soils is below 4 dS m −1. 20 Soil salinity in the dry season in Bangladesh results from a number of mechanisms including tidal inundation, irrigation using saline water, and the capillary rise of salts from shallow groundwater tables; 13,14 Table 1.

Dry season inundation can be caused by tides and surges of brackish sea water Cited by: Irrigating crops with saline water can result in yield loss and decreased quality.

Plants vary greatly in their tolerance to saline water. The extent of yield loss when plants are irrigated with saline water depends on a number of factors including soil type, drainage and the frequency, method and time of irrigation. The information on this page will help growers make good irrigation decisions.

Principles and Practices of Irrigation Management for Vegetables 2 Irrigation Water Quality Criteria Understanding irrigation water quality is critical for sustainability of vegetable production. In some areas of Florida, water quality impacts crop productivity more than soil fertility, pest and weed control, variety, and other Size: KB.

Salinity problems reduce productivity on both irrigated and non-irrigated agricultural lands in the United States and throughout the world. Salt-affected soils on Colorado range land. High annual evaporation (and/or transpiration), low annual precipitation and restricted soil drainage, combine to create salt affected soils in depressions or.

SALINITY PROBLEMS Introduction. Build-up of Soil Salinity Salinity Effects on Crops. Management of Salinity Problems Drainage.

Salinity control by leaching Crop tolerance to salinity. Cultural practices Changing methods of irrigation. Land development for salinity control. ANR Publication Irrigation Water Salinity and Crop Reproduction 4 Table 1.

Estimated yield of tree and vine crops with long-term use of irrigation water with different levels of soil salinity (potential yields are based on a 15 to 20 percent leaching fraction and do not account for the effects of specific elements) ECw (mmhos/cm) Yield File Size: KB.

In Table 2, the total irrigation amount I and leaching requirements R x are calculated assuming 85% irrigation application efficiency (e i) and 80% leaching efficiency (f i).Salinity of the irrigation water, C i, is g/l (1 dS/m) (Gowing and Wyseure,Asghar, ) whereas the salinity of the drainage water, C s, is g/l (4 dS/m) for a given crop pattern (Maas and Hoffman, ).Cited by: Downloadable (with restrictions).

Agricultural production in many semi-arid areas over the world is affected by poor drainage and saline conditions. Optimal agricultural management can be considerably different under these conditions than in locations where these problems do not occur.

A long-run steady-state model is developed to analyse several management strategies for a farm with limited Cited by: 3.

This section presents a comparative analysis of farmers' responses to mode of irrigation and crop production. Both surface and groundwater are commonly used for irrigation in the project area. Table 1 provides information on the various modes of irrigation used by farmers based on and survey data.

However, there is no significant. horticulturae Review Soil Salinity: Effect on Vegetable Crop Growth. Management Practices to Prevent and Mitigate Soil Salinization Rui Manuel Almeida Machado 1,2,* and Ricardo Paulo Serralheiro 1,3 1 ICAAM— Instituto de Ciências Agrárias e Ambientais Mediterrânicas; Universidade de Évora, Pólo da Mitra, Apart Évora, PortugalCited by: Downloadable.

Agricultural production in many semi-arid areas over the world is affected by poor drainage and saline conditions. Optimal agricultural management can be considerably different under these conditions than in locations where these problems do not occur.

A long-run steady-state model is developed to analyse several management strategies for a farm with limited natural drainage and. 68 percent of the total cropped area.

Sindh also produces horticulture crops: mangoes, bananas, dates, and chillies. The total gross command area (GCA) is MHa and it is estimated that about percent of the gross command area of Sindh is under water logging and salinity problems which has reduced the production of major crops by 40 to.

Sustained and profitable production of crops on salt-affected soils requires appropriate on-farm management decisions. Growers must know how plants respond to salinity, the relative tolerances of different crops and their sensitivity at different stages of growth, and how different soil and environ-mental conditions affect salt-stressed plants.

The Indian Council of Agricultural research has given priority to control and manage salinity problems that have developed in north-west India. Multi-disciplinary taskforces have recommended installation of subsurface drainage for salinity control, based on design and management techniques developed by the Central Soil Salinity Research Institute (CSSRI), to rehabilitate lands Cited by: Achieving food security for all amid a growing population is a grand challenge for the world at large given increasing global water scarcity.

As rainfall, river runoff and snowfall in water-scarce areas are becoming insufficient to meet the water demands, there is a need to consider planned use of waters of marginal quality for irrigation to support sustainable increase in crop production systems. land that could become saline.

Every year new salinity problem areas develop and are identified. Salinity is the most important problem facing irrigated agriculture, and solving salinity problems is one of the greatest challenges to agricultural scientists.

Much research has been conducted during the past 30 to 40 years to determine the File Size: KB. soil salinity of maize crop is shown in Table 2. Table 2. Yield Decrease under Increasing Soil Salinity of Maize Crop. Yield Potential (%) Salinity (dS/m) 90 75 50 Ni 0 10 Source: Mass and Hoffman, Table 3 shows physic-chemical properties of irrigation water for maize production.

farm-level model includes two crop types and two water types—higher-valued crops that use low salinity imported water and IFDM crops that use highly saline drainage water. Our analysis evaluates profit-maximizing choices regarding crop allocations and water application rates and Cited by: 3.

World Losing 2, Hectares of Farm Soil Daily to Salt-Induced Degradation. Water A large portion of the affected areas in developing countries have seen investments made in irrigation and drainage but the infrastructure is not properly maintained or managed. the crop yields from irrigated areas not affected by salinization have.

During the months of August, September, and October, the cover crop uses soil moisture that would otherwise evaporate and accumulate more salts on the surface. One option is a per-acre cover crop mix of 25 pounds of barley, 5 pounds of sunflowers, and 2 pounds of sugar beets.

“These crops winterkill,” says Augustin. This Progress Report on the Project "Managing Irrigation Systems to Minimize Waterlogging and Salinity Problems" cover the half yearly perlod ending J During the report period the field data collclction activities at the tertiary level for the Rabi (winter).

Sensitivity analysis showed that the model was able to simulate the effects of cultivar salt tolerance, environmental conditions, and soil water availability on crop response to salinity. Comparison with field data showed that the model was able to predict the effect of salinity and the combined effect of water stress and salinity on crop yield.

In South China’s paddy irrigation area, irrigation and drainage dual-purpose channel mode (IDDCM) is applied to conserve farmland resources in rice cultivation areas with relatively flat topography. However, this mode makes it difficult to quantify and analyze the water and nutrient balance in rice fields.

KEY WORDS: Water quality, Drainage water, Water reuse, Drip irrigation. Introduction In addition to the shortage of water, high temperature, severe salinity of the soil create problems in arid and semi-arid areas. Nowadays, drip irrigation can overcome particularly any environmental limitations for sustainable crop production.

These 11 irrigated crops occupied 78% of the irrigated area within the irrigation districts in Yield Reductions from Water Stress The Stewart et al. () method was used for prediction of the relative yield reductions from different levels of water stress (Eq.

1 - Y a /Y m = k y (1. USDA strives to sustain and enhance economical crop production by developing and transferring sound, research-derived, knowledge to agricultural producers that results in food and fiber crops that are safe for consumption. Crop Acreage and Yield Crop Acreage and Yields USDA produces charts and maps displaying crop yields, crop weather, micromaps, and crop acreage animations.

In all cases, manuscripts must address implications and provide insight regarding agricultural water management.

The primary topics that we consider are the following: • Farm-level and regional water management • Crop water relations, crop yields and water productivity • Irrigation, drainage, and salinity in cultivated areas.

El-Salhia, Egypt to estimate maximum profits according combined effect of water-logging and salinity on the crops yield.

Key words: Water-logging, Consumptive Use, Salinity, Crop Yield, Egypt. Introduction Water-logging and salinity problems often require some form of drainage to allow sustainable agriculture Size: KB. Tolerance of vegetable crops to salinity M.C.

Shannon*, C.M. Grieve U.S. Salinity Laboratory, Department of Agriculture, Agricultural Research Service, W. Big Springs Road, Riverside, CAUSA Abstract Global constraints on fresh water supplies and File Size: KB. Part presents suggested methods to derive crop water requirements.

The use of four well-known methods for determining such requirements is defined to obtain reference crop evapotranspiration (ETo), which denotes the level of evapo-transpiration for different climatic conditions.

These methods are File Size: 2MB. The two biggest challenges for farmers are minimizing the amount of water that needs to be drained from irrigated landscapes; and the proper disposal or reuse of the salt-laden drainage water. The global annual cost of salt-induced land degradation in irrigated areas (in the form of crop production losses) is estimated to be around US$ Testing and Parameters.

Greenhouse and crop producers across Pennsylvania utilize a variety of sources of water for irrigation. Data from U.S. Geological Survey show that each day over 27 million gallons of water are used for irrigation of ab acres in the state each day. Project Methods 1. Agricultural production and the environment.

Management strategies include source control (crop areas, irrigation switching, reduced input use, and improved management and timing), emissions reuse, and disposal options such as solar evaporators for the drainage problem.The system should permit a small fraction of the irrigation water (about 10 to 20 percent, the drainage or leaching fraction) to be drained and discharged out of the irrigation project.

In irrigated areas where salinity is stable, the salt concentration of the drainage water is normally 5 to 10 times higher than that of the irrigation water. Approximately one-third of the million hectares of irrigated land worldwide, land that provides 40% of the global food production, are affected by salinization and are in need of drainage (United Nations).Historically, ancient societies in the Americas, China, and the Middle East have all had substantial bouts of salinity and drainage problems, the outcomes of which have ranged from yield Cited by: