JOURNAL OF AGRICULTURE
Year:2006 | Volume:8 | Issue:2|Papers Count:7

This experiment was conducted to determine the effect of competition between common weed in chickpea's form in Kermanshah and chickpea (Cicer arietinum). It was carried out in Sararood Experimental station in Kermanshah province in 2000. Split plot factorial was considered as an experimental design that had four replications. The weeding was main factor with two different levels (whole season weeding and whole season interference), while types (two levels) and density (four levels) were confounded in subplots. This experiment shows that the competition of weeds with chickpea decrease yield in both types and all densities. However increasing the density lead to decrease of dry matter weigh of weeds, it's the result of better competition of chickpea with weeds. In addition, in dwarf types, increasing the density result decreases the yield, in contrast in tall type the increasing of density, the decrease of yield. It is due to hear stress in flowering stage because this situation increases the percentage of the cavity pods. Density, in both types, correlates negatively with seed weight, pod number in plant and straw weight. However, pod number in square meter has positive correlation with density. Besides, the pod number in square meter has highest positive correlation with yield in both weeding and non-weeding treatments.

An experiment was conducted as a split - split plot in form of a randomized block design with four replications in Cilakhor region of Iran in 2004. The main factor was the seed planting date with three levels (5, 12 and 25 April), sub factor was the crop density with two levels (160,000 and 250,000 pI/ha) and sub-sub factor was the crop arrangement with two levels (equidistant and non-equidistant). Delaying the planting date caused the increase of biological yield and decrease of harvest index. Increasing the crop density caused the increase of the number of fertile heads per square meter, biological yield, grain yield, and decrease of the number of fertile tillers, the number of grains per head, dry weight of above-ground organs per hill, yield of each hill (P<0.05) and the plant height, the number of grains per head was decreased.

This study was carried out in Zarabd, Bardsir and Sirjan in Kerman province in 2002-2003. A number of 58 green-house owners, five wholesaller and 20 retalisaller selected by systemathic sampling method the results showed that cost marketing service was from 196 to 620 Rials and marketing net benefit was 375 Rials for cucumber and 230 Rials for tomato. Retail marketing net benefit was 204 Rials for cucumber and 284 Rials for tomato. Total marketing margin, wholesaller marketing margin were 100, 40 and 60 for cucumber and 120, 70 and 50 for tomato. The share of producer, wholesaller and retailsaller fron consumer price for cucumber was 71.4, 17.2 and 11.4 percentages and for tomato were 74.4, 14.9 and 10.6 percentage. The marketing efficiency in the path of producer, retailsaller and consumer was maximum for tomato (85%) and was in the path of producer, wholesaller and consumer was minimum for cucumber.

This experiment was conducted to determine the modulated content of inner coat of dromedary and Bactrian camels kept in different provinces of Iran. A total of 438 male and female (71 and 371) camels were grouped into fifth classes and hair samples were taken from right midside of animals. Analysis of variance was performed using general linear model way SAS package and the least square means were generated with this program. Significant (P<0.01) difference was found in inner coat percentage between age groups and provinces. There were significant (P<0.01) difference in the percentage of modulated and non modulated fibers between the two species of camels, age groups and provinces. It was shown that the females and yearling-2ed age group in Kerman province had higher inner coat percentage (82.64±0.5 and 84.6±1.2%) respectively.

The present investigation was carried out to identify the factors affecting the use of information technology (IT) by trainees in apply-scientific Education in Agriculture. The statistical population of this study was educators of agricultural apply-scientific centers. Method of sampling was random multi steps sampling. Questionnaire used for data collection. The collected data were analyzed with the SPSS software. To identify the effective factors in IT usage by trainees in apply-scientific Education in agriculture, the R-Type Factor Analysis was employ ED. Results indicated that the variables classified in four categorize: skills rate for working with IT, attitude, conditions and facilities, the educator's mastery of English language. These four factors were responsible for 64 percent of variances in factors affecting the usage of IT by trainees.

The main objective of present paper was to study the validity of agricultural extension indices for ranking Iranian provinces in terms of extension and education activities. The study was carried out in two phases. In phase one through review of literature, 137 extension-education indices were identified. The indices were classified in seven fields as following: 1) Indices of extension workers, 2) infrastructural indices of agricultural extension, 3) indices of extension-education activities, 4) organization and management indices of agricultural extension, 5) indices of mass education, 6) indices of extension communication and 7) indices of extension credits. The indices were validated by 180 extension experts of six provinces which randomly were selected. For data analysis the mode, mean, standard deviation and coefficient of variation were estimated. In second phase, data collected for 133 indices, through Deputy of Extension and Operation System, affiliated to the Ministry of Agricultural Jihad and by using principal component techniques composite indices of each of the fields was calculated. The results revealed that except four indices, the rest of. 133 indices were appropriate for agricultural and extension planning and evaluation purposes. The calculated composite index also showed that Hamadan province was ranked in first position and Qazvin province in the last position in this aspect.

To determine the effective factors on yield performance of corn, 40 corn growers were selected using two stages sampling method from Orzooeyeh in Kerman province. Data were collected by questionnaires and interview. Frontier production function and technical inefficiency function were estimated with Front 4 software.Using Dalinous method the selected corn growers divided to three groups according to their yield performance.Analyze of variance and T-test showed that socio-economics factors (Kind of ownership and fragment' experience, education and cultivated area) were the most effective factors on difference of yield performance. According to the results, the average of technical efficiency for landowners and non-landowners were 58 and 46% respectively.