by Utah Water Research Laboratory, College of Engineering, Utah State University in Logan .
Written in English
Bibliography: p. 81.
|Statement||J. I. Stewart ... [et al.].|
|Contributions||Stewart, J. Ian., Utah Water Research Laboratory.|
|LC Classifications||S589.7 .O66|
|The Physical Object|
|Pagination||xv, 191 p. :|
|Number of Pages||191|
|LC Control Number||78622517|
Stewart JI, Danielson RE, Hanks RJ, Jackson EB, Hagan RM, Pruitt WO, Franklin WT, Riley JP () Optimizing crop production through control of water and salinity levels in the soil. Utah Water Lab, PRWG –1, Logan, p Google ScholarCited by: Salinity levels for the 20 dS m −1 irrigation water treatment are 10 dS m −1 at 30 cm and 14–16 dS m −1 at 60 cm under the standard irrigation and management practice. Rainfall rapidly reduces the salinity level at both 30 cm and 60 cm soil depths. At 60 cm, the salinity level falls by 8–10 dS m −1, e.g. from 16 to 6 dS m − by: 7. These sites were selected to investigate the top soil and river water salinity and their effects on crop production. The study sites are highlighted in Figure 2. The areas lie at to m above mean sea level. Soil characteristics of the western coastal zone are silty loams or alluvium. Data collection. Since soil salinity control might increase nitrate leaching, operational criteria should optimize the trade-off between the application of higher water volumes to reduce soil salinity and lower.
This experiment used a single sprinkler line source to provide data of the response of sweet corn to different levels of water and salinity. At Fort Collins, a day hybrid corn variety (Pioneer ) was used and three levels of soil salinity at pre-planting were established (0, 3 and 5 dS m-1 saturation extract). The crop was irrigated. With the help of graphs which are updated each time step (1 d) during the simulation run, the user can track changes in soil water content, and the corresponding changes in crop development, soil. As the water evaporates, salts dissolved from the soil deposit and accumulate at the soil surface. Notice the crust of salt deposited on the ground and on the base of the fence post. In California's Coachella Valley, irrigation applications and sub-surface drain lines are managed to reduce the effects of soil salinity on crop land. Start studying Crop Production Chapter 12 Study Questions. Learn vocabulary, terms, and more with flashcards, games, and other study tools. Most crops grow well in soils with high salinity. T/F. The soil water that drains through the soil within 48 hours of irrigation or rainfall is called _____.
When water becomes the limiting factor, either too much or too little, optimal water management for better crop production and/or natural resource management is the key for sustainable agriculture. An optimal water management strategy starts from accurate measurement of water balance components, including precipitation, evapotranspiration (ET), and runoff, among others. Soil salinisation is a widespread soil degradation process, exacerbated by a mismatch between water demands for irrigation in food production and the amount of quality (non-saline) water. Different land, crop and/or water management approaches (e.g. conservation tillage, crop selection/rotation, groundwater level control) have been used to. Try Our Software Now. FACTORS AFFECTING SOIL SALINITY. Several factors affect the amount and composition of salts in soils: Irrigation water quality – The total amount of dissolved salts in the irrigation water, and their composition, influence the soil salinity. Therefore, various parameters, such as source water EC and its minerals content should be tested. Salt-affected soils are those where salt levels reduce yield Traditional classifications for saline soils Soil salinity class EC (dS/m) Effects on crop plants Non-saline 0 – 2 Salinity effects negligible Slightly saline 2 – 4 Yields of sensitive crops may be restricted Moderately saline 4 – 8 Yields of many crops are.