|Statement||[by Leon Bernstein].|
|Series||Agriculture information bulletin -- no. 217|
|Contributions||United States. Dept. of Agriculture.|
|The Physical Object|
|Pagination||6 p. :|
Additional Physical Format: Online version: Bernstein, Leon, Salt tolerance of fruit crops. Washington, D.C.: U.S. Dept. of Agriculture, Crop salt tolerance is defined based on the crops ability to maintain yield and quality with increased salinity. The salt tolerance of crops can be described as a function of yiel d decline across a range of salt concentrations expressed as the average rootzone salinity (Figure 2).File Size: KB. Definition of salt tolerance Plant salt tolerance or resistance is generally thought of in terms of the inherent ability of the plant to withstand the effects of high salts in the root zone or on the plant’s leaves without a significant adverse effect. Lunin et al. () proposed a couple of ground rules for salinity studies: (1) the actual tolerance of a given cropFile Size: KB. Salinity tolerance in irrigated crops. June Primefact first edition Agriculture NSW Water Unit. Different crops can tolerate different levels of salinity in irrigation water. The tolerance of plants to salinity is mainly influenced by: climate, particularly the abundance or lack of rainfall to leach salts from soils soil types and drainage characteristics within the root zone which influence the ease of leaching and salt accumulation Other factors include rootstock or variety.
Horticultural Crops. The salt tolerance of a crop can be described as a complex function of yield decline across a range of salt concentrations (Maas and Hoffman ; Maas and Grattan ; van Genuchten and Hoffman ). Salt tol-erance can be adequately described on the basis of two parameters: threshold, the electrical conductivity (EC. t. The maximum salt tolerance of wheat in Sampla is (say 5) dS/m before it starts to be affected negatively when the ECe increases more. This wheat crop is moderately sensitive to salt. The wheat data of Gohana show a higher salt tolerance (threshold salinity ECe=7dS/m) than the Sampla data. The reason is unknown. The salt tolerance of a crop can best be described by plotting its relative yield as a continuous function of soil salinity. For most crops, this response function follows a sigmoidal relationship. However, some crops may die before the seed or fruit yields decrease to zero, thus eliminating the bottom part of the sigmoidal curve. Salt tolerance is the relative ability of a plant to endure the effects of excess salts in the soil rooting medium in order to produce a satisfactory stand or yield. The mode of tolerance can vary. Most plants avoid salinity, some evade or resist salinity, and a few actually tolerate salinity.
Consequently, spring wheat, durum or winter wheat will not be suitable crops if the EC levels are mmhos/cm or more. The two most salt-tolerant annual crops are barley and oat. Canadian research showed that both barley and oat yields started declining at EC levels of mmhos/cm or more (Fowler and Hamm, ). Salt tolerance of crops is the maximum salt level a crop tolerates without losing its productivity while it is affected negatively at higher levels. The salt level is often taken as the soil salinity or the salinity of the irrigation water. Salt tolerance is of importance in irrigated lands in arid regions where the soil salinity problem can be extensive as a result of the salinization occurring here. It concerns . Through this 2-volume book series, we critically assess the potential venues for imparting salt stress tolerance to major crops in the post-genomic era. Accordingly, perspectives on improving crop salinity tolerance by targeting the sensory, ion-transport and signaling mechanisms are presented here in volume 1. Volume 2 will focus on the. HIGHLY SALT TOLERANT CROPS. Field Crops: Barley. Cotton. Mustard. Sugar beets. Fruits: Date palm. Coconut. Vegetables: Spinach. Kale. MEDIUM SALT TOLERANT CROPS.