Iranian Journal of Field Crops Research
Year:2016 | Volume:14 | Issue:3|Papers Count:11

Introduction Major cultivated cotton regions of Iran are located in dry and semiarid climates, therefore water deficiency or drought stress is inseparable part of cotton production systems in these regions. So identification and introduction of drought tolerant cotton genotypes is crucial. showed that water stress decreased plant growth rate, leaf area and finally photosynthesis in cotton. In addition plant height reduction is a primary effect of water stress. According to results, net photosynthesis, stomatal conductance and transpiration decreased simultaneously with an increase in drought stress intensity.....

Introduction Oat is an important crop which is cultivated in 9, 679, 190 hectares and produced as much as 22, 504, 708 ton worldwide (FAO.2011). This crop is used mainly as forage cereal; however, it is also used for human consumption in the form of oatmeal and rolled oats because of high amounts of B and E vitamins (25).Regarding to calcareous soils of Kermanshah province (Iran) and the importance of iron and zinc functions in human societies and efforts to find out a way to solve the problems caused by their deficiencies, an experiment was performed to investigate the genetic diversity among oat genotypes in term of iron and zinc contents in grain and agronomical traits under complete irrigation and moisture stress conditions….

Introduction Safflower is native to Iran, and is cultivated for high adaptability, low water requirement, resistance to drought and useful unsaturated fatty acid (Ashri et al., 1977). Identification of effective agronomic traits and relationship between them are important aims under water stress conditions…

Introduction Nowadays oilseed crops are considered as the second most important sources of energy in the diet. In this regard, cultivation of oilseed crops such as safflower (Carthamus tinctorius L.) is important due to quality of oil seed and medicinal properties….

Introduction Abiotic stresses cause 71% reduction in crop yield around the world, from which 20% is related to salinity stress. The importance of sugarcane increases every day due to greater demand for sugar. Since sugarcane has mainly grown in arid and semi-arid regions, salinity is one of the main problems for this crop due to higher evaporation in these areas. Salicylic acid (SA) is classified as a phyto – hormone and belongs to a group of phenol compounds. Salicylic acid can improve plant tolerance to abiotic stresses. This research aimed at studying the effect of SA on the alleviating of salinity stress in sugarcane….

Introduction Safflower (Carthamus tinctorius L.) is an important oilseed crop grown throughout the semiarid regions in many parts of the world. It has been cultivated for its oil and flowers and as a meal. Alkaline stress is caused by alkaline salts such as Na2CO3 or NaHCO3 in the soil…

Introduction Salinity is an important abiotic stress that reduces the crop production potential and the efficiency of plants in arid and semi-arid regions. Soil salinity can be increased by irrigation, inappropriate drainage, sea advancement to coastal regions and the accumulation of salts in desert and semi-desert regions. Salinity is a limiting factor for plant growth because it limits the feeding of the plants through reducing the uptake of P, K, nitrate and Ca and increasing inter-cellular ion concentration and osmotic stress. In addition to its adverse impacts on the yield and yield components of crops, salinity affects most processes involved in the growth and development of the plants too.....

Introduction Between oil seeds, from the quality, quantity and nutrition index point of view, canola has the top level.Because of the solubility of N fertilizers, the time of urea application, is very important and one of the main reasons of the reduction in N application efficiency is utilization of urea in an inappropriate time…..

Introduction Phosphorus (P) is an essential element in crop nutrition, which can be growth limiting or an environmental contaminant, if present in excess. On the other hand, tillage practices have a direct effect on behavior and availability of soil P. Since, application of different tillage methods lead to different patterns of soil phosphorus distribution, hence P fertilizer needs and P availability may be different in tillage systems. Researchers have found that the effects of tillage on P stratification depends on soil texture. Kimmel et al. (2000) reported that total P losses were significantly lower for NT than chisel-disk-field cultivator and ridge-till. Bahgar et al. (1998) showed that higher levels of P fertilizer improved shoot, root growth and the uptake of all nutrient elements in No till system. High levels of P also significantly enhanced the uptake of all nutrient elements except Zn and Cu.....

Introduction Nowadays, salinity is one of the limiting factors for crop production in arid and semi-arid regions. On the other hand, sorghum (Sorghum bicolor L.) is a self-pollinated and short-day plant, which partly has been adapted to salinity and water stress conditions; also play an important role in humans, livestock and poultry nourishments. All studies have showed the positive effects of Silicon on growth and yield of plants in both normal and stress conditions. The aim of this experiment was to improve salinity tolerance of Sorghum by application of Silicon…..

Introduction Salinity is a major abiotic stress that affects approximately 7% of the world’s total land area. Cotton (Gossypium barbadense L.) is considered as one of the most important cash crops which is widely used for agricultural and industrial purposes. Although, cotton is classified as one of the most salt-tolerant major crops but its growth and development are adversely affected by soil or water salinity....