جستجوی مقالات مرتبط با کلیدواژه "seed protein" در نشریات گروه "اکولوژی"

The study was conducted to investigate the effect of salicylic acid priming and nanofertilizer application on the yield and some morphological characteristics of two chickpea cultivars in order to select the most appropriate treatment under rainfed conditions. This experiment was carried out as factorial-split in the form of a basic design of randomized complete blocks with three replications in two crop years 2015-2016 and 2015-2016 in Khorramabad, Lorestan. The variety factor includes Adel and Grit, and salicylic acid priming, including no priming and priming in the main plots, and nanofertilizer in four levels, including control and foliar spraying at the rate of one, two and three liters per hectare were placed in sub-plots. The results showed that in both the Adel and Greet, the highest number of seeds per plant, hundred seed weight, seed yield and harvest index were obtained from salicylic acid and nanofertilizer spraying depending on the amount of use. In both Adel and Great, the highest seed yield was produced by the application of salicylic acid with two liters per hectare of nanofertilizer (1840 and 1152 kg/hectare, respectively). The highest level of leaf greenness, seed protein and protein yield was also obtained from the application of salicylic acid with half to one liter per hectare of nanofertilizer. In general, the Adel cultivar with salicylic acid priming and spraying at least half a liter per hectare of nanofertilizer is recommended to improve the quantity and quality of chickpeas in dry conditions.

This study was conducted to evaluate the effect of different tillage systems including conservation and conventional on yield-related traits and seed quality of some autumn-seeded chickpea cultivars. The experiment was carried out as split plot based on a completely randomized block design during the 1399-1400 growing season. Tillage systems including conventional, reduced and no tillage were arranged as main factor and chickpea cultivars (Adel, Arman, Hashem, Mansour, Azad, Azkan, Aksu and Goksu) were arranged as sub factor. Among the traits under study only 100-seed weight was significantly affected by tillage systems and the interaction between tillage and cultivar. The highest 100-seed weight (42 g) was obtained for Aksu under no till system whereas, the lowest value was recorded for Arman and Hashem under all three tillage systems. However, the effect of cultivar on 100-seed weight, the number of pods per plant, harvest index, reproductive effort index and seed protein percent was significant. The highest harvest index (47%) and protein percent (19%) were observed in Adel and Mansour, respectively. Overall, the findings of this research showed that chickpea yield and related traits (excluding 100-seed weight) as well as grain quality were not significantly affected by tillage systems. There was no significant difference in grain yield between the studied cultivars, although the difference between them was significant in terms of some yield-related traits and grain protein percent.

Conventional tillage can reduce infiltration and hydraulic conductivity by disrupting macrospore networks and increasing bulk density, porosity, water use efficiency, and soil organic matter. Conservation tillage is one of the practices of crop residue management on the soil surface. Reduced tillage is one of the conservation systems that amount remain crop residues on the soil surface. Reduced tillage has some benefits, including higher soil organic matter, soil moisture maintenance by reducing evaporation, better penetration of water, and controlling water and soil erosion. Excessive use of chemical fertilizers caused serious environmental issues globally, such as reduction of plant diversity, instability of economic yield, increased pest, and disease damages, and intensification of soil erosion. These increasing concerns regarding the negative impacts of these systems on the environment and human health suggest that more effort is needed to develop sustainable agricultural systems. The application of vermicompost and biofertilizers is regarded as one of the promising approaches to increasing crop productivity. Chickpea (Cicer arietinum L.) is mainly cultivated as a rainfed crop, and water stress often affects both productivity and yield stability. The objective of this experiment was to evaluate the impact of different tillage systems and the application of vermicompost and arbuscular mycorrhizal fungi on the growth, yield, and economic efficiency production of Cicer arietinum L.

A field experiment was carried out as a split plot based on a randomized complete block design (RCBD) with 12 treatments and three replications at Firuzabad, Kermanshah, Iran, in 2019. The main factor was different tillage systems, including conventional tillage (moldboard plowing+ disking, tillage depth 25–30 cm- CT), reduced tillage (chisel plowing- tillage depth 15 cm- RT), and no-tillage (NT), and the sub factor was four different fertilization treatments (C: control, AMF: arbuscular mycorrhizal fungi (Funneliformis mosseae), VC: vermicompost (at 1.5 t/ha), AMF+ VC: arbuscular mycorrhizal fungi+ vermicompost). In AM fungi treatments, 80 g of the soil containing mycorrhizal fungi hyphae and the remains of the root and spores (1000 g spore.10-1 g soil) was added to the soil during planting times. Also, vermicompost (1.5 t ha-1) was applied to the soil before planting.

The Results demonstrated that the highest seed yield (116 g.m-2) and protein yield (24.2 g.m-2) was achieved in reduced tillage with the application of AMF+ VC. Also, reduced tillage increased the seed yield and protein yield by 19.6 and 17.1 %, respectively, when compared with CT. Different tillage systems and applications of vermicompost and arbuscular mycorrhizal fungi significantly impacted the number of pods per plant, plant height, number of lateral branches per plant, number of main branches per plant, and biological yield. The highest mentioned traits were obtained in reduced tillage and with the integrative application of AMF+ VC. Moreover, the application of AMF+ VC increased the number of pods per plant, plant height, and biological yield by 37.2, 35.2 and 19.7%, respectively, in comparison to control. The highest pod total weight (155.8 g.m-2), harvest index (40.5%), and seed protein content (21.2%) were obtained through integrative application of AMF+ VC, and the lowest these traits were reached in control. Based on the economic values, the best treatments were RT+ C, CT+ C, AMF+ RT, and AMF+ CT, respectively, with the highest net income and Marginal rate of return.

Overall, the results of this experiment showed that there was a significant difference between tillage systems. The highest number of pods per plant,  plant height, number of lateral branches per plant, number of main branches per plant, biological yield, total pod weight, seed yield, and protein yield were achieved in reduced tillage that increased by 26.4, 16.8, 27.4, 28.6, 10.9 19.6 and 17.1 %, respectively when compared with conventional tillage.  Also, integrative application of AMF+ VC increased harvest index, 100 seed weight, biological yield, seed yield, and seed protein content by 16.7, 21.1, 19.7, 40.1, and 21.8%, respectively, when compared with control. The highest values of the seed yield and protein yield were obtained in reduced tillage with the integrative application of AMF+ VC. In contrast, based on the economic values, the maximum marginal rate of return was achieved in reduced tillage without fertilizer, conventional tillage without fertilizer, reduced tillage+ AMF, and conventional tillage+ AMF, respectively.

The present study was performed to investigate the effects of chemical, animal and biological fertilizers on morphological, physiological, biochemical, functional traits, yield components of corn 500 single-cross, as well as to introduce the best fertilizer treatment.

An experiment was conducted using a factorial based on the randomized complete block design with three replications in a farm located in Dasht-e-Giv in Khoosf city of South Khorasan province in late June of 2018-2019 growing season. The experimental treatments were inoculation/ non-inoculation of seeds with phosphate Barvar-2 as the main plot, and three levels of chemical fertilizer (control, N150: P25: K150 and N300: P50: K300 per hectare) and three levels of animal fertilizer (control, 10 and 20 t.ha-1) as the subplot. Furthermore, indices of plant height, shoot dry weight, row number per cob, grain number per row, 1000-grain weight, grain yield, biological yield, harvest index, seed protein, chlorophyll a, b, total chlorophyll and carotenoids were evaluated.

The results indicated that seed inoculation with bio-fertilizer Barvar-2 significantly increased the dry weight of aerial parts, the number of grains per row, 1000-grain weight, grain yield, biological yield, and photosynthetic pigments. Also, the application of animal fertilizer at the level of 20 t.ha-1 and chemical fertilizer at the treatment of N300: P50: K300 significantly increased all indices studied in this study than the control treatment. According to the results, it was observed that there were significant effects for interactions of bio-fertilizer × chemical fertilizer (chlorophyll b, total chlorophyll, carotenoids and biological yield), bio-fertilizer × animal fertilizer (dry weight of aerial parts, chlorophyll b, total chlorophyll and carotenoids), chemical fertilizer × animal fertilizer (dry weight of aerial parts, biological yield, chlorophyll b and carotenoids) and biofertilizer × chemical fertilizer × animal fertilizer (carotenoids).

In general, inoculating seeds with phosphate barvar-2, the application of 20 t.ha-1 of animal fertilizer, the application of N300: P50: K300 treatment, the interaction of biological, animal and chemical fertilizers resulted in improving yield and yield components of corn 500 single-cross under agricultural conditions of the present study area.

Nitrogen is a vital and important element for the plant and is available by chemical or biological process. The contribution of nitrogen fertilizer to performance improvement in various studies has been reported to be between 30-50%. Koocheki et al. (2017) reported that the levels of nitrogen fertilizers used in experiments for wheat in the range of 20-250 kg.ha-1 increased wheat yield by 2477 kg.ha-1 compared to control treatment. Biodegradable fertilizers (especially Azotobacter) has been reported positive because they have great potential to improve the nutrition of plants and replace chemical fertilizers, and can minimize or completely eliminate the use of chemical fertilizers and reduce environmental hazards, improve soil structure in cereal, dissolve phosphate and increase growth via absorption of mineral elements. Azotobacter, one of the most reputed free-living bacteria that stabilizes nitrogen in the air, which by using different mechanisms, increases the production of auxin hormone and the development of the plant's root system (increasing root area with more growth), and ultimately helps increase the yield of crops and orchards. The amount of nitrogen consolidated by 20 to 40 kg.ha-1 per year is estimated for cereals such as wheat, corn, sorghum, millet and rice, with a yield increase of 7-12% and a maximum of 39% in these plants.

This experiment was conducted on irrigated barley (Hordeum vulgar v. Bahman) in a farm in the Songhor town, Kermanshah Province, as factorial based on completely randomized block design (CRBD) with three replications during 2014-2015. Factors including Azotobacter chroococcum (0, 100 and 200 g.ha-1) and nitrogen fertilizer from urea source (0, 50, 100, 150 and 200 kg.ha-1). In this test were studied LAI, number of tillers, shoot dry weight, hectoliter weight, protein content, biological yield, grain yield, harvest index, number of spikes.m-2, number of seeds per plant and thousand-seed weight traits. Sowing date was 19 November, 2014. Azotobacters used as inoculate with seed treatment and urea fertilizer at planting time just one-third and two-thirds were stem elongation.

Analysis of variance showed that the effects of azotobacter and nitrogen as well as interactions between them were significant on all traits. The maximum amount LAI, tillers, shoot dry weight, hectoliter weight, protein content (12.5%), biological yield, harvest index, number of spikes, number of grains per spike, thousand seed weight and grain yield (871 g m-2) were obtained in treated with 200 g.ha-1Azotobacter and 200 kg.ha-1 N With the increase the amount of inputs also increased attribute values. Considering the cost of the inputs and amount of grain yield and protein, the consumption of 100 g.ha-1Azotobacter and 100 kg.ha-1 N about 834 g.m-2 and 26%, respectively, had the most economic output and did not significantly different with maximum consumption of them. Generally, the results showed that the effect of industrial nitrogen on all traits was more than Azotobacter, but optimal use of biological and chemical fertilizers combined treatment with low doses (100 g inoculated with 100 kg.ha-1 N), also had the significant and positive effect on morphological traits and yield. So it may be partly replaced urea fertilizer consumption with Azotobacter.

The results of this experiment showed that the highest grain yield (871 g.m-2) was obtained from the combined application of 200 g.ha-1 biomass with 200 kg.ha-1 N. In general, with increasing amount of nitrogen from type of urea, the grain yield was between 20 and 71% and the grain protein content was between 20 and 32%, but with the increase of azotobacter (alone), the grain yield increased between 17 and 42%, and the grain protein was between 5 and 10 Percentage.

In order to evaluate the effects of biofertilizers, organic and chemical fertilizers on quantitative and qualitative yield of Dragon's Head (Lallemantia iberica) under dry farming, a field experiment was conducted based on randomized complete block design with three replications and eight treatments at the farm located in West Azerbaijan province - Nagadeh, Iran during growing reason of 2015-2016. Treatments included application of Vermicompost (10 t.ha-1), biofertilizers , Azotobarvar1 (Azotobacter) and Barvar Phosphate-2 (the combination of Pseudomonas putida and Bacillus lentus), chemical fertilizer (N, P), Vermicompost+ biofertilizers, 50% chemical fertilizer+ biofertilizer, 75% Vermicompost + 25% chemical fertilizer, 75% Vermicompost + biofertilizers + 25% chemical fertilizer and control (Without any fertilizer). Different traits such as plant height, number of nut goal per plant, number seed per capitol, thousand seed weight, biological yield, seed yield, oil percentage and oil Yield, percentage of protein were recorded. The results showed that application of biofertilizers enhanced the seed yield, yield components and qualitative traits of balangu. Among treatments, combined usage of biofertilizers showed the greater increasing in studied traits than individual consumption. The highest seed yield, Essential oil content, mucilage yield and protein content were obtained from combined usage of biofertilizers (75% Vermicompost + biofertilizers + 25% chemical fertilizer). According to the results, it seems that integrated application especially triple combination under dry farming conditions had positive effects on seed yield, qualitative traits of Dragon's Head and reduction of chemical fertilizers in the recommended region.