جستجوی مقالات مرتبط با کلیدواژه "fars province" در نشریات گروه "مکانیزاسیون کشاورزی"

Price fluctuations, market structure, and price transmission can significantly affect the welfare of egg producers and consumers. The current study aims to evaluate price transmission and analyze its impact on the egg market in the Fars province (April 2016 to December 2021). The market structure was examined using several indices, i.e., the inverse number of firms, concentration ratios, Herfindal-Hirschman index, and Hall-Tiedman index at the pullet breeding and wholesale levels in the egg market. The price transmission between wholesale eggs and retail levels was investigated, employing error correction, threshold autoregressive, and momentum threshold autoregressive models. The results indicated an increasing trend in the average annual changes in the percentage of wholesale and retail prices, with an increase in the standard deviation of average monthly prices. Thus, the results revealed severe fluctuations during this study. Market structure at the pullet breeding and wholesale levels indicated a state of multilateral monopoly and monopolistic competition. Furthermore, the analysis demonstrated asymmetric price transmission from wholesale to retail. Due to the non-competitive market structure and the observed asymmetry in price transmission, egg producers and consumers have to bear higher costs.

The increase in the performance of cultivated plants is under the influence of various features including the soil properties. The nutrient elements of the soil are among the important soil features. The soil fertility should be studied to determine the proper level of fertilizer application. The improper use of chemical fertilizers with no attention to soil fertility not only does not increase the quality and quantity of the products but also imposes extra costs while unbalancing the level of nutritional elements of the soil and causing environmental problems. In this regard, the determination of soil fertility and providing a soil fertility map sounds necessary. In this study, the soil fertility of Shadkam plain in Eghlid county of Fars province was determined to prepare the soil fertility map for the cultivation of bean. The soil fertility map was obtained by a fuzzy system using a hierarchical analysis in a GIS environment. To this end, soil sampling was conducted from 210 locations and the input data including organic matter, potassium, phosphorous, iron, manganese, zinc, and copper concentrations were measured.  The interpolation of each soil element was achieved by the inverse distance weight (IDW) model in the GIS environment. Then, a membership function was prepared for each factor to obtain the fuzzy map considering their corresponding critical values. Finally, each layer was allocated with weight using the analytic hierarchy process. Based on the relative weight of each criterion, the highest relative weight (0.354)  was obtained for organic carbon while iron showed the lowest (0.031)  relative weight. The results also indicated that 0.3, 80.3, and 19.4% of the studied region can be categorized as very poor, poor, and moderate groups in terms of fertility for bean cultivation, respectively.

Agricultural extension agents should provide dry land producers with appropriate education to make them more interested in learning about water use optimization. Therefore، it is recommended to accompany education with art. In this regard، a study، using the randomized experimental research design، was carried out among dry land grape producers in Herayjan village، Southwest Iran، using the Morgan table for 70 producers. They were randomly divided into 2 experimental and control groups. The post-test only one control group design was applied through exposing the experimental group to educational treatment accompanied by poetry and the control group to related education only. The results showed that the experimental group had higher mean scores for water use optimization. Therefore، it is suggested that the agricultural extension method can positively change the attitude of dry land grape producers towards water use optimization when the educational method makes use of the art of poetry.

Thirteen species in five genera of the Libellulidae family were collected in a survey of dragonflies (Odonata) of Shiraz and its vicinity, involving 19 locations, The presented records of the libellulid dragonflies taken from the Fars province comprise a first time collection of two genera, Sympetrum and Pantala, and seven species, Orthetrum anceps Schnider, Orthetrum taeniolatum Schneider, Orthetrum chrysostigma Burmeister, Sympetrum fonscolombii Selys, Sympetrum meridionale Selys, Crocothemis servilia Drury, Trithemis kirbyi Selys, and Pantala flavescens Fabricius. A map of the localities of Fars province was provided as a table of the species’ distributions and an identification key was presented for the genera and species the Libellulidae family of Shiraz and its vicinity.