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Kinnow mandarin is a high yield cultivar that has special importance due to its interesting flavor and high tolerance againts high temperature conditons (Nawaz et al., 2008). Unfortunately, it has alternate bearing habit that affecteing its economic efficiency (Safaei-Nejad et al., 2015) . Foliar application of fruit thining compounds and nutrientes in on-year could be efective to adjust alternate bearing in fruits (Rabe, 1994; Safaei-Nejad et al., 2015; Sebastian et al., 2019). This research was carried out in order to the evaluation of the possibility of alternative bearing adjustment of Kinnow mandarin using foliar application of thinning compounds and nutrients in Dezful region of Iran. To cope with alternative bearing problem of Kinnow mandarin trees in Dezful region of Iran, two separate experiments were conducted during 2018. In the first experiment, in order to increase the yield of Kinnow mandarin trees in off-crop year, the trees were treated with foliar application of urea (0, 0.3 %, and 0.5%) and magnesium sulfate (0, 0.1%, and 0.3%) fertilizers and the mixture of them in the early of January, February and March in on-crop year. In the second experiment, trees were treated by spray application of Naphthalene acetic (NAA) (zero, 200, 300, and 400 mg/l) and Carbaryl (zero, 700, 1200, and 1700 mg/l) at 40 days after full bloom stage during on-year. At the end, yield, fruit characteristics including fruit weight, fruit length and diameter and their ratio, total soluble solids, vitamin C, total acidity and TSS/TA ratio were measured. Analysis of variance was performed by ANOVA procedures (SAS 9.1 for Windows) and significant differences were calculated according to Duncan’s multiple range tests (P < 0.05). according to the results, yield and fruit weight were significantly affected by the interaction of type of fertilizer × time of foliar application, while fruit length and diameter were not significantly affected by them. Also, fruit length and diameter were affected significantly by fertilizer type. Foliar application of urea (0.3%) + Magnesium sulphate (0.1%) in the early of February at on-crop year significantly increased the yield of Kinnow mandarin trees in off-year. It highlights the role of time of foliar application and ratio of nutrients on adjustment of alternative bearing of Kinnow mandarin in a special region. Results shows, total acidity of fruits was significantly affected by time of foliar application while other chemical properties of fruits were not significantly affected by time of foliar application, type of fertilizers and their interaction. The results indicated, the effects of foliar application of NAA and Carbaryl at 40 days after full bloom stage in on-year on yield and fruit length were significant while fruit weight and diameter and the ratio of fruit length to diameter were no significantly affected by these compounds. The highest and lowest yield of kinnow mandarin trees was related to the treatments of control and foliar application of NAA (400 mg/l), respectively. Regarding to the yield of Kinow mandarin trees, there were no statically significant difference between foliar application of Carbaryl and control treatment. Overall, the highest yield of trees in off-crop year was related to the treatment of foliar application of urea (0.3%) + Magnesium sulphate (0.1%) in the early of February (on-crop year) that had significant difference with control trees and it was able to adjust alternative bearing to a satisfactory level. Based on the results, Carbaryl compound is not able to adjust alternative bearing of Kinnow mandarin trees at 40 days after full bloom stage in Dezful region. Among different concentration of NAA, NAA spraying with concentration of 200 mg/l adjust alternative bearing more appropriately and had significant difference with control trees, but the concentration of 300 and 400 mg/l NAA reduced the level of yield with a great intensity, which is not recommended.

18 soybean genotypes were examined to investigate the relationships between some principal attributions of morphology with seed yield per soybean, by Random Complete Block Design (RCBD) study. This study was also carried out three replicates to gain reliable results. The results of variance analysis indicated that, there were significance differences among all soybean genotypes. Moreover, the results of correlated analysis revealed that biological yield (0.96), harvest index (0.92), and number of branches (0.92) had the uttermost correlation with seed yield. To data factor analysis, four independent variables justified 99.92 percent of all data. The first variable, seed yield, justified 96.71 percent of entire variance. Multiple-Regression Model with method Analytical Regression Model (step-by-step) was utilized to examine soybean seed yield. This model proved that number of branches entered into model and justified 85.20 percent of variation of seed yield. A correlated coefficient of considered attributions was equal 0.92 and these indexes had significant at 1% in statistical process. Therefore, these traits can be notability used in soybean breeding programs. Also, accordance to cluster analysis, the sample was divided into three groups.

one of the aspects of managing the maize, like any other crops, is determine the plant cultivar and irrigation interval for using the cultivar potential. one of the most important problems in corn cultivation in the northern region of Khuzestan is low information of farmers about grain yield and some agronomic characteristics of domestic and foreign corn hybrids in this region and this factor lead to difficulties in the decision of farmers to select suitable hybrids for cultivation. also water consumption is high in corn, thus this study was carried out to evaluate the reaction of domestic and foreign corn hybrids available in response to difefrent irrigation intervals.
This experiment was carried out on the basis of split-plot design in completely randomized block design with three replicates in 2015. Irrigation treatments in three levels includes 7, 14 and 21 day’s interval) as main-plot that applied in flowering(tassel emergence) and available hybrids in region in nine levels includes Moghan704, Jovin704, Mobin 616, Karoon 701, NS770, Simon, BC582, BC678 and AS71 as sub-plot were carried out. The characteristics measured were yield and grain yield components (number of kernel rows, number of kernels per row, 1000-kernel weight), plant height, number of leaves per plant, plant diameter, length and width of ear leaf, ear length.
Results showed that the effect of irrigation treatments, hybrid and irrigation×hybrid interactions on grain yield, 1000-kernel weight, ear length and number of kernels per row was significant. The effect of hybrid and irrigation×hybrid interaction on number of kernel rows was significant. Mean comparison of irrigation×hybrid interactions on grain yield showed that the highest amount of grain yield was observed in Moghan704 in 7 day (1.18 kg/m2) and 14 day (1.14 kg/m2) intervals, Jovin 704(1.23 kg/m2) in 7 day intervals, Simon in 7day (1.15 kg/m2) and 14 day(1.2 kg/m2) and NS770 in 7 (1.2 kg/m2)and 14(1.27 kg/m2) day interval and the lowest amount of grain yield was observed in Mobin 616 in 21 day interval(0.54 kg/m2) and Karoon 701 in 21 day intervals(0.62 kg/m2). Mobin616 hybrid had the highest number of kernel rows in 7 day intervals (14.9) and Simon had the lowest amount in 21 day interval (12.4). NS770 had the highest number of kernels per row in 14 day intervals (43.9)) and Mobin616 had the lowest amount in 21 day interval (28.06). BC582 hybrid had the highest ear length in 14 (21.9) and 21 day intervals (22.06) and Mobin616 had the lowest amount in 21 day interval (15.5). Simon had the highest plant height (260.16 cm). Mobin hybrid had the highest leaf number (15.6). Simon hybrid had the highest leaf length (89.3 cm). In terms of leaf width, BC678 had the highest amount (9 cm).
7-14 days irrigation interval can be applied after corn tasseling and achieved grain yield similar to 7 days. But irrigation interval more than 14 days is not recommended because cause a significant decrease in the grain yield.

Satureja khuzestanica and satureja rechingeri are two valuable and endemic medicinal species that grow widely in southwest parts of Iran. These species are rich in phenolic compound caracole; therefore, they have considerable biological activities. In order to evaluate the quantitative and qualitative yields of two savory species (Satureja khuzestanica and S. rechingeri) in different irrigation intervals, an experiment was carried out in the west of Lorestan (Kashkan) during the growing season of 2012-2013.
The Experiment was conducted on the basis of split-plot design in completely randomized block design with three replicates. Irrigation treatments (15 and 30 days interval and rainfed) as the main-plot and species in two levels (Satureja khuzestanica and satureja rechingeri)as the sub-plot were carried out. The characteristics measured were leaf and flower yield, essential oil content, essential oil yield, essential oil compositions, leaf area index and plant height.
Results showed that the effect of irrigation treatments on all traits except for essential oil compositions was significant. The effect of species on essential oil content and essential oil yield was significant. Mean comparison of traits showed that by increasing in irrigation intervals, leaf and flower yield, essential oil content, essential oil yield, leaf area index and plant height of both summer savory species were decreased amount of by 73, 23, 78, 80 and 33%, respectively compared to control (Irrigation interval of 15 days). Between species, essential oil content (3/7%) and essential oil yield (100/2 kg.ha-1) of rechingeri species were more than essential oil content (2/03%) and essential oil yield (62/2 kg.ha-1) of khuzestanica species.
The leaf and flower yield, essential oil content, essential oil yield, leaf area index of both summer savory species were decreased by increasing irrigation intervals and rainfed cultivation. Trend of changes in essential oil yield was similar to leaf and flower yield, In other words, the essential oil yield was further affected by the herb yield (leaf and flower yield).

Satureja khuzestanica is valuable and endemic medicinal specie that growing widely in southwest parts of Iran. This specie is rich of phenolic compound carvacrol, therefore have considerable biological activities. Satureja khuzestanica is a new medicinal plant in Iran, and little research has been done on. Thus, the present study with the aim of evaluating the response of plant to the application of biological and chemical manure was carried out.
Pot experiment was carried out in field conditions as factorial layout based on a completely randomized design with three replications in Andimeshk during 2013. Biological fertilizer as first factor in four levels (1: control, 2: mycorrhiza, 3: mixture of Azotobacter, Pseudomonas and Azospirillum, 4: mixture of mycorrizha, Azotobacter, Pseudomonas and Azospirillum), and chemical fertilizer as second factor in three levels (1: control, 2:50-30 kg/ha N-P, 3: 100-60 kg/ha N-P) was applied. The characteristics measured were dry weight, plant height, number of branches, leaf and stem ratio, essential oil content, essential oil yield, essential oil compositions.the essential oil content was extracted using Clevenger apparatus(Water distillation). The amount and type of oil compositions were measured by gas chromatography (GC) and gas chromatography connected to a mass spectrometer (GC-MS) respectively. Analysis of variance was performed by software SAS (9.1). For comparison of means, least significant difference (LSD) test (At the level of 5% probability) were used.
Analysis of variance showed that the effects of biological and chemical fertilizers and biological×chemical interaction on dry weight, oil yield were significant but the effect of biological and chemical fertilizers on essential oil composition was not significant. The effect of chemical fertilizer on essential oil content was significant. Mean comparison of traits showed that the mixtures of mycorrizha涧⵺뢚 had a highest dry weight (8.4 g/plant) and control has a least dry weight (4.05 g/plant).The highest and least essential oil content (2.58, 1.76 %) and oil yield (0.25, 0.1 g/plant) were observed in first (50-30 kg.ha-1 N-P) and second (100-60 kg.ha-1 N-P) levels of chemical fertilizers, respectively.
In general, results of this study showed that plant response to use of of mycorrhizal fungi was positive. The highest dry weight was observed in pots which treated with mycorrhizal fungi. The essential oil content, dry weight and the essential oil yield were increased by Application of fertilizers up to 50-30 kg.ha-1 N-P.

For comparison the growth characteristics and quantitative and qualitative yield of two summer savory species (such as Satureja khuzestanica and S. rechingeri) in response to rainfed and irrigated conditions، an experiment was carried out on the basis of split-plot design in completely randomized block design with three replicates in north of Khuzestan during growing season of 2012-2013. Irrigation treatments (15 and 30 days interval and rainfed) as main-plot and species in two levels (Satureja khuzestanica and satureja rechingeri) as sub-plot was carried out. The characteristics measured were fresh and dry yield، leaf and flower yield، essential oil content، oil yield، leaf area index and plant height. Results of variance analysis of traits showed that the effect of irrigation treatments on all traits except essential oil content and plant height was significant. Mean comparison of traits showed that in rainfed cultivation and by increasing in irrigation intervals، fresh and dry yield، leaf and flower yield، oil yield and leaf area index of both summer savory species were decreased amount of 54، 44، 55، 53 and 37%، respectively compared to control (Irrigation interval of 15 days)، but the essential oil content was increased by 6 percent. Fresh yield (3/14t/ha)، dry yield (1/82 t/ha)، leaf and flower yield (1/08 t/ha) and leaf area index (0/43) of specie of khuzestanica were higher than rechingeri specie، but essential oil content (3/7%) and essential oil yield (33/86 kg/ha) of Satureja rechingeri were more than Satureja khuzestanica.

For finding out the effect of nitrogen and calcium carbonate fertilizers on nitrate and nitrogen accumulation in aboveground biomass, calcium concentration and dry weight of leaves of saturja hortensis L., a factorial experiment was carried out on the basis of randomized complete block design with three replicates in Karaj in 2008. The nitrogen fertilizer in four levels (0, 50, 100 and 150 Kg.ha-1) and calcium carbonate (lime) fertilizer in three levels (0, 5 and 10 t.ha-1) was used. Accumulation of nitrate and nitrogen, calcium concentration and dry weight of leaves were measured. The results showed that calcium carbonate had significant effects on nitrogen (p<0.01) and nitrate accumulation (p<0.05) and calcium concentration (p<0.01) but it had not significant effect on dry weight of leaves. Also the effect of nitrogen fertilizer on nitrate and nitrogen accumulation and dry weight of leaves was significant (p<0.01). Results of means comparison of traits showed that by increasing of nitrogen fertilizer and calcium carbonate application, nitrate and nitrogen accumulation in leaves increased and decreased, respectively. In addition, by increasing of nitrogen fertilizer levels, dry weight of Savory leaves increased. In this study, due to reduction of nitrate accumulation, increased yield of savory and economical advantage, the treatment of 5 t.ha-1 calcium carbonate (lime) × 100 kg.ha-1 ammonium nitrate is recommended.

In this study the effects of post-harvest application of Rindite in various concentrations (0, 0.2, 0.4 and 0.6 ml L-1) and with different exposure duration (24, 48 and 72 h) on breaking of dormancy and sprouting of potato (Solanum tuberosum L., cv. Marfona) minitubers of two ages (freshly harvested and one week after harvest) was investigated. In comparison with the control minitubers, Rindite treated minitubers showed significantly shorter dormancy, especially when minitubers were treated one week after harvest. Three-way interactions effect of concentration, duration and minitubers age on the minituber sprouting were statistically significant and application of Rindite by fumigation with 0.2 ml L-1 for 48 h or 0.4 ml L-1 for 24 h effectively reduced the dormancy period of one week old minitubers. The number of sprouts per minituber was significantly enhanced by treating minitubers with Rindite where compared with the untreated control minitubers, however, there were no differences among concentrations or exposure durations. The length of sprouts per minituber was significantly increased by treating minitubers with Rindite. There were also strong interaction between concentration and duration, in concentration of 0.2 ml L-1, the length of sprout showed a positive correlation with exposure duration, but in 0.6 ml L-1, this correlation was negative. In concentration of 0.4 ml L-1, with increase in duration until 48 h the sprout length increased, but further increase in duration led to decrease in sprout length. When longer duration was accompanied with higher concentration, treatment with Rindite led to rotting of minitubers.