Javad Hamzei
@basu.ac.ir
Department of Agronomy and Plant Breeding/Faculty of Agriculture
Bu-Ali Sina University
RESEARCH INTERESTS
Intercropping
Crops and medicinal plants ecology
Ecological services of intercropping and agricultural systems
Energy use efficiency
Integrated management of nutrients and natural resources
Integrated crop management
Improving water use efficiency
Ecological weed management
Scopus Publications
Scholar Citations
Scholar h-index
Scholar i10-index
Scopus Publications
Jalal Soltani, Rokhsare Samavati, Benyamin Jalili, Hedayat Bagheri, and Javad Hamzei
Springer Science and Business Media LLC
Fatemeh Salimi, Mohammad Fattahi, and Javad Hamzei
Elsevier BV
Rezvan Shams, Ali Azizi, Javad Hamzei, Alireza Noroozisharaf, Shoeib Moghadam, and Mojtaba Kordrostami
Elsevier BV
Abstract Hemp (Cannabis sativa) is an herbaceous, annual, and dioecious plant belongs to the Cannabaceae family and grows in some parts of Iran. In the present study, the genetic diversity between and within the populations of 10 local cultivated landraces from Iran was evaluated, using multiple datasets (agro-morphological and biochemical traits, seed oil fatty acid compositions, and ISSR (Inter simple sequence repeats) markers. The analysis of variance based on the morpho-biochemical traits and oil compositions indicated significant differences among studied hemp populations (P
Javad Hamzei
Informa UK Limited
ABSTRACT Crop production in arid/semi-arid regions is restricted by soil moisture and nitrogen (N) deficiencies. Consequently, sufficient levels of N and irrigation are important in improving the crop's productivity. Therefore, a 2-year field experiment was conducted to understand influences of watering techniques namely 300, 500 and 700 mm with contrasting N supply (0, 60, 120 and 180 kg ha−1) on wheat cv. “landrace” productivity, dry matter translocation (DMT) and contribution of pre-anthesis assimilates to the grain (CPAAG, %). Experiments were conducted each year using a split-plot design with three replications at a private farm, North Hamedan Province, Iran. Accordingly, when 500/700 mm water was applied, CPAAG values were higher than those obtained after applying 300 mm water, i.e. 49.99 and 45.45 vs. 40.13%. The highest productivity in terms of grain yield, grain N concentration, nitrogen harvest index, special products analysis division and protein content was achieved in normal deficiencies of irrigation and N. This was further supported by a higher leaf area index, crop growth rate and N uptake of such treatment. Meanwhile, co-application of 120 kg N and 500 mm water significantly improved DMT, water and N use efficiency, and it was the optimal scheme for wheat production.
Javad Soltani Ka, Mohammad Ali Abouta, Javad Hamzei, and Moosa Meskarbash
Science Alert
J. Soltani, M. Zaheri-Shoja, J. Hamzei, M. S. Hosseyni-Moghaddam, and S. Pakvaz
Wiley
Summary
The plant family Cupressaceae (Coniferales) harbours diverse endophytic fungi with antifungal, antibacterial and antiproliferative activities. Here, endophytic association of a broad bacterial community with the healthy foliar tissues of Cupressus arizonica, Cupressus sempervirens, Juniperus communis and Thuja orientalis (Cupressaceae) is shown. We isolated over 69 endophytic bacterial strains of Proteobacteria, Bacilli and Actinobacteria from Cupressaceae. The initial screening for antifungal activity against Pyricularia oryzae identified eleven superior bacterial strains which were identified as Brevundimonas diminuta CAE24 (G−, Caulobacteraceae, Alphaproteobacteria); Stenotrophomonas maltophilia CAE23, CSE4, CSE12, CSE42, CSE49 and CSE62 (G−, Xanthomonadaceae, Gammaproteobacteria); Bacillus pumilus CSE66 and Bacillus subtilis POE26 (G+, Bacillaceae, Bacilli); and Microbacterium resistens CSE19 (G+, Microbacteriaceae, Actinobacteria). The dominant isolated bacterial species was S. maltophilia. This species represented 63.6% of the superior strains which was ubiquitous and also non-host specific. In addition, the superior bacterial strains produced bioactive secondary metabolites and volatile compounds (VOCs) with antifungal activity against the fungal pathogens of Cupressaceae, that is Diplodia seriata, Phaeobotryon cupressi and Spencermartinsia viticola. The antagonistic activity of the endophytic bacteria on the target fungi was also confirmed in vitro. To our knowledge, this is the first to document such an endophytic bacterial community in Cupressaceae and its bioactivity. These findings may find application in organic agroforestry for plant disease biocontrol and in biopharmacy for lead molecule discovery.
Javad Hamzei and Mohsen Seyyedi
Elsevier BV
Abstract Agriculture is an important energy user and energy supplier in the form of bio-energy. In today’s agricultural practices, soil tillage and applications of chemicals are the greatest consumers of energy and labor. Therefore, selection of an appropriate tillage method and finding an efficient way for decreased consumption of chemicals can improve energy use and reduce costs. The pre-requisite for such improvements includes assessment of the system's energy balance. Moreover, intercropping can play an important role in improving yield and reducing energy consumption. To compare the effects of different tillage treatments on energy use and grain yield in a sunflower-soybean intercropping system, a field experiment was performed on a clay loam soil at the Agricultural Research Station, Faculty of Agriculture, University of Bu-Ali Sina, Hamedan, Iran, during the growing seasons of 2013 and 2014. Three levels of tillage, as the main factor, and different planting patterns were tested in sub-plots (sole crop of sunflower, sole crop of soybean, and additive intercroppings of sunflower + 30%, 60% and 90% soybean). The intercropping design was additive. Results showed that sunflower grain yield was significantly affected by the planting pattern. Tillage treatments did not have significant effects on the sunflower yield. The highest sunflower grain yield (356.22 g m −2 ) was obtained from the sole crop of sunflower. Furthermore, amongst intercropping treatments, the highest sunflower grain yield (302.44 g m −2 ) was achieved from the combination of sunflower + 60% soybean. Also, comparison of the combined treatments indicated that the highest energy output (248363 MJ ha −1 ) and energy use efficiency (7.44) were reached with the combinations of conventional tillage × sunflower + 90% soybean, and minimum tillage by disc × sunflower + 90% soybean, respectively. In conclusion, using minimum tillage and intercropping system of sunflower + 60% soybean can decrease energy consumption and increase total yield and land use efficiency when compared to sunflower sole crop under conventional tillage.
F. Salimi, F. Shekari, and J. Hamzei
Springer Science and Business Media LLC
German chamomile is an important essential oil plant that has adaptability to a wide range of climates and soils. Methyl jasmonate (MJ) is a plant growth regulator that involves in many morphological and physiological processes and has a role in defense systems of plants under stress conditions. Here, a pot-culture study was undertaken to investigate the possible role of MJ treatment on the growth and different chemical constituents of German chamomile plants subjected to salinity stress. The aim was to determine whether MJ could protect chamomile production against salinity and whether this protection was associated with regulation of antioxidant enzymes. Our results show that treatment of chamomile plants with 75 µM MJ leads to increases in plant growth in terms of flower, straw and root dry weights. The photosynthetic rate concomitantly with membrane stability index, potassium content, as well as free proline content was markedly increased. In addition, the quercetin content was increased significantly in flowers. Moreover, the application of the investigated 75 μM MJ significantly improved enzyme activities in terms of catalase, peroxidase and ascorbate peroxidase activities. Sodium and proline contents were also measured and finally, effects of MJ and salinity interactions on all characteristics as well as relationship of antioxidant enzymes activity with proline content were investigated. As a conclusion, treating chamomile plants with 75 μM MJ could alleviate the harmful effects of salinity stress.
Javad Hamzei and Mohsen Seyedi
Springer Science and Business Media LLC
AbstractIn recent years, there has been increased interest in agricultural production systems in order to achieve high productivity and promote sustainability over time. Hence, an experiment was conducted in order to evaluate the effects of intercropping systems on total yield, land equivalent ratio, and weed control efficiency (WCE). Pure standing of chickpea and barley, and intercropping systems of 100:25, 100:50, 100:75, 100:100, 25:75, 50:50, and 75:25 (chickpea:barley) were studied as randomized complete block design with three replications. Results indicated that weed density and biomass, grain yield, and index of WCE were affected significantly by intercropping systems. In comparison with control (sole cropping of chickpea with full infested), intercropping could decrease total weed density and biomass up to 66 and 90 %, respectively. The highest (89.9 %) and the lowest (49.2 %) values for WCE were achieved at 100:100 and 75:25 treatments, respectively. Moreover, in all treatments, LER was >1 which shows that intercropping has
advantages. The highest value of LER (2.36) was achieved at 100:100 treatment. In general, chickpea–barley intercropping can suppress weeds and increase land-use efficiency.
Javad Hamzei and Jalal Soltani
Elsevier BV
Abstract Rapeseed is one of the most important oilseed crops worldwide and there is a high potential for expansion of its cultivation, particularly in arid and semi-arid regions. Management practice effects on radiation use efficiency (RUE) have not been well documented for rapeseed. It is thought that reduction of aboveground dry matter (ADM) in crops after decreased RUE occurs due to shortage of nitrogen and irrigation. To test this hypothesis, we applied deficit watering techniques to rapeseed with contrasting nitrogen supply. Treatments included three levels of nitrogen supply, namely low level (LN, 8 g N m−2), normal level (NN, 12 g N m−2) and high level of nitrogen (HN, 16 g N m−2), in combination with three levels of irrigation (IR1, 7500; IR2, 4500; and IR3, 3000 m3 water ha−1). Then, traits of ADM, grain yield (GY), leaf area index (LAI), nitrogen nutrition index (NNI), leaf chlorophyll (SPADi), capture ratio (CR), penetration ratio (PR), reflection ratio (RR), accumulated PAR (∑iPAR) and RUE were measured. The ANOVA revealed that the N and irrigation treatments exerted significant effects on all traits. RUE in IR1 and IR2 treatments was comparable to, or higher than, that in IR3 (0.756 and 0.745 vs. 0.477 g μmol−1). However, the interaction of irrigation levels × N rates affected only ADM, GY, ∑iPAR and RUE. Maximum values of these traits remained unchanged at IR1 × NN, IR1 × HN, IR2 × NN and IR2 × HN combined treatments. In conclusion, the IR2 × NN treatment can be recommended for rapeseed under field conditions in order to maximize the yield.
RECENT SCHOLAR PUBLICATIONS
MOST CITED SCHOLAR PUBLICATIONS
Publications
Javad Hamzei, Mohsen Seyyedi. 2016. Energy use and input–output costs for sunflower production in sole and intercropping with soybean under different tillage systems. Soil & Tillage Research 157 (2016) 73–82. .