siavash aryafar; Alireza Sirousmehr; Iesa khammari; Ahmad ghanbari; Esmaeil Seyedabadi
Articles in Press, Accepted Manuscript, Available Online from 19 May 2021
Abstract
In order to investigate the effect of tillage systems and the combination of chemical fertilizer and livestock manure on some characteristics of sunflower, an experiment was conducted as split plots in a randomized complete block design with three replications at the research farm of Zabol University ...
Read More
In order to investigate the effect of tillage systems and the combination of chemical fertilizer and livestock manure on some characteristics of sunflower, an experiment was conducted as split plots in a randomized complete block design with three replications at the research farm of Zabol University in 2019. The main factor was tillage levels (1-reversible plow and disc, 2-sweep and disc, and 3-disc). The sub-factor included fertilizer levels (no fertilizer application, 100 kg/ha of diammonium phosphate, 25 tons/ha of livestock manure + 100 kg/ha of diamonium phosphate, 50 tons/ha of livestock manure + 100 kg/ha of diamonium phosphate, 25 tons/ha of livestock manure, 50 tons/ha of livestock manure). The results showed that the highest values were obtained from the 50 tons/ha of livestock manure in tillage with disk for grain yield (5072 kg/ha), and oil percentage (44.44 percent), 50 tons/ha of livestock manure in tillage with disc for oleic acid content (51.61 percent), and 50 tons/ha of livestock manure for linoleic acid content (31.1 percent). The highest amount of chlorophyll a, b and carotenoids (1.253, 0.45 and 1.04 mg/g, respectively) was obtained from the application of 100 kg/ha of diamonium phosphate in tillage with disc. In general, in order to increase and improve the quantitative and qualitative characteristics of sunflower, the application of 50 tons/ha of livestock manure was suitable in disc tillage conditions.
sara Najafi; Issa Khammari; ahmmad ghanbari; mahdi dahmard
Articles in Press, Accepted Manuscript, Available Online from 10 June 2021
Abstract
Additive intercropping series of sunflower and basil were laid out under salty and fresh water irrigation management. The aim was to achieve the highest yield and intercropping advantage as a result of intercropping the two plants. An experiment was performed at Zabol University during two cropping years ...
Read More
Additive intercropping series of sunflower and basil were laid out under salty and fresh water irrigation management. The aim was to achieve the highest yield and intercropping advantage as a result of intercropping the two plants. An experiment was performed at Zabol University during two cropping years (2018 and 2019). Fresh water (ECe = 3.9 dS.m-1) and saline water (ECe = 1.1 dS.m-1) were taken from the Hirmand River and a local well, respectively. The irrigation water regimes were fresh water, salt water, and an alternating usage of salty and fresh irrigation water. In addition, five types of intercropping patterns were considered as sub-factors (100 percent sunflower (4 plants/m2), 100 percent basil (80 plants/m2), 100 percent sunflower + 50 percent basil, 50 percent sunflower + 100 percent basil and 100 percent sunflower + 100 percent basil. The results showed that the interaction between intercropping patterns and different irrigation regimes had a significant effect on 1000 seed weight, seed yield, harvest index, oil yield of sunflower, dry weight and essential oil yield of basil plants. In response to all irrigation regimes, the highest value of total land equivalent ratio (1.37-1.45) and intercropping advantage (0.29 - 0.48) occurred as a result of cultivating 50 percent sunflower + 100 percent basil, thereby appearing as a good model of intercropping. The results showed that intercropping patterns can be effective in modulating the negative effects of saline irrigation water on plant yield.
Abbas Keshtehgar; Mahdi Dahmardeh; Behrooz Keshtegar; Ahmad Ghanbari; Issa Khammari
Volume 23, Issue 3 , Summer 2021, , Pages 447-465
Abstract
To evaluate the production of mashhadi melon (Khatouni cultivar) under different management of fertilizer levels and vermicompost bed, this study has been conducted as a factorial experiment in the form of a randomized complete block design with three replications during the spring of 2020 crop year ...
Read More
To evaluate the production of mashhadi melon (Khatouni cultivar) under different management of fertilizer levels and vermicompost bed, this study has been conducted as a factorial experiment in the form of a randomized complete block design with three replications during the spring of 2020 crop year as two separate designs in Fariman and Zahak counties. Application of fertilizers in six levels include non-use of fertilizer (control), cow manure, sheep manure, nanobiomic foliar application, silicone foliar application, and complete application of chemical fertilizer as the first factor and four different levels of vermicompost include non-use of vermicompost (control), 5, 10, and 15 tons per hectare as the second factor. Results show that the highest fruit yield, total titration, percentage of nitrogen, phosphorus, fruit potassium, and fruit flesh thickness in both Fariman and Zahak counties are obtained from nanobiomic foliar application under 15 tons per hectare of vermicompost. Also, the highest percentage of total soluble solids in Fariman county is observed jointly in the treatment of sheep manure and the treatment of chemical fertilizers and Zahak county in the treatment of non-use of fertilizer (control) under 10 tons per hectare of vermicompost. In Fariman County, results of cow manure, sheep manure, nanobiomic, silicon, and chemical fertilizers at the levels of 10 tons and 15 tons per hectare of vermicompost has not shown any significant difference. Therefore, with less consumption of vermicompost, to achieve the desired amount of yield, fruit texture characteristics, and nutrient uptake, nanobiomic foliar application under 10 tons per hectare of vermicompost is recommended for melon cultivation in Fariman County.
Mahdi Motakefi; Ahmad Ghanbari; Seyyed Mohsen MoussAvi Nik; Alireza Sirousmehr
Volume 21, Issue 4 , Autumn 2019, , Pages 367-377
Abstract
This study was conducted to investigate the effect of organic growth Stimulator on growth and yield of rapeseed (Dalgan cultivar) under drought in university of Zabol (Chahnime) during 2017as split plot design based on RCBD with three replications. The treatments consisted of irrigation cut off levels ...
Read More
This study was conducted to investigate the effect of organic growth Stimulator on growth and yield of rapeseed (Dalgan cultivar) under drought in university of Zabol (Chahnime) during 2017as split plot design based on RCBD with three replications. The treatments consisted of irrigation cut off levels based on the phenological growth stages (Sylvester-Bradley encoding system): I1 = control (complete irrigation), I2 = irrigation up to stage the growth rate code is 2.20 (twenty internally identified) and I3 = irrigation to stage the growth rate code is 5.9 (all pods are more than 2 cm long) and subsidiary factor consists of four levels of fertilizer : F1 = control (pure water solution), F2 = Hamoon Green 1 liter at 10 liter + calcium, F3 = Hamoon Green 1 L at 20 liter + calcium, F4 = Hamoon Green 1 liter at 30 liter + Calcium. The results showed that I2 caused a significant decrease in plant height, stem diameter, number of pods, number of seeds per pod, 1000 seed weight, grain and biological yield and oil percentage, and also F2 increased the above traits except the percentage of oil. Interaction effects showed that the highest amount of chlorophyll a, b, total, carotenoid, selenium and calcium content of grain obtained from I1F2. The highest amount of proline in I2F2 observed. The highest of these traits was obtained from F2. Generally, spraying of the organic growth stimulator can be moderates the harmful effects of drought stress in rapeseed and 27% improved seed yield.
Farideh Akbari; Mehdi Dahmardeh; Ali Morshdi; Ahmad Ghanbari; Soror Khoramdel
Volume 20, Issue 4 , Winter 2019, , Pages 785-799
Abstract
In order to investigate the N uptake and N utilization efficiency and nitrogen harvest index in corn and bean intercropping under the influence of tillage systems and residues of wheat an experiment was performed using split- split plots based on a randomized complete block design with three replications ...
Read More
In order to investigate the N uptake and N utilization efficiency and nitrogen harvest index in corn and bean intercropping under the influence of tillage systems and residues of wheat an experiment was performed using split- split plots based on a randomized complete block design with three replications in agricultural research field of Shahrekord during growing season of 2016–2017. The tillage systems with three levels (conventional, minimum, and no tillage) and four levels of crop residue (0, 30, 60, and 90% of straw yield of wheat) and five intercropping patterns including corn monoculture, bean monoculture, corn and bean ratio with 2:2, 3:1 and 1:3 were considered as main, sub and sub-sub plots, respectively. The results showed that the highest nitrogen content in seed and biomass of both crops under conditions of use of 60% of plant residues, no- tillage systems and their monocultures. Agronomic use nitrogen efficiency in intercropping was lower than their monocultures. The highest N utilization efficiency was obtained in 3: 1 and 2: 2, indicating a clear superiority of intercropping than monoculture. Therefore, intercropping corn and bean can improve the nitrogen utilization efficiency. By decreasing nitrogen fertilizer application, it can play an important role in the long-term sustainability of agro-ecosystems production.
Ghasem Hosein Talaei; Ahmad Ghanbari; Mohammad Reza Asgharipour; Hasan Habibi; SEYYED MOHSEN MOUSSAVI NIK
Volume 20, Issue 2 , Summer 2018, , Pages 415-426
Abstract
An experiment was conducted to examine the effects of different tillage systems and fertilization on quantitative and qualitative characteristics of cumin as split randomized complete block design with three replicates in Delfan during 2016. Main plot included three different tillage system; 1( conventional ...
Read More
An experiment was conducted to examine the effects of different tillage systems and fertilization on quantitative and qualitative characteristics of cumin as split randomized complete block design with three replicates in Delfan during 2016. Main plot included three different tillage system; 1( conventional (mold board plough, chisel plough and disk), 2 (minimum tillage (chisel plough and disk) and 3( zero tillage (disk) and subplots comprised eight different combinations of organic and chemical fertilizer; 1) control, i.e. without any dose of manure and fertilizers, 2) 25 kg N ha-1, 3) 10 ton vermicompost ha-1, 4) 20 ton cow manure ha-1, 5) 20 ton municipal solid waste compost ha-1, 6) 50 percent dose of chemical fertilizer (N) + 50 percent vermicompost, 7) 50 percent dose of chemical fertilizer (N) + 50 percent cow manure and 8) 50 percent dose of chemical fertilizer (N) + 50 percent compost. Results indicated that the highest grain yield (81.53 g/m-2) and biological yield (210.41 g/m-2) achieved in minimum tillage and application of cow manure, while the least quantities of these parameters was observed in zero tillage and control. In addition, the greatest essential oil percentage and yield attained in minimum tillage and application of 10 ton vermicompost, which was 25 and 28 percent greater than control. The results suggested that to improve the quantitative and qualitative characteristics of cumin application of manure and vermicompost along with minimum tillage is recommended.
Hasan Mousapour; Ahmad Ghanbari; Mohammad Reza Asghari pour
Volume 18, Issue 4 , Winter 2017, , Pages 835-850
Abstract
This experiment was conducted to examine the effect of sowing date and different combinations of ajwain and isabgol intercropping on the grain yield, yield components, ajwain essential oil yield, weed control, and the mucilage percent of isabgol as split plot based on RCBD with three replications in ...
Read More
This experiment was conducted to examine the effect of sowing date and different combinations of ajwain and isabgol intercropping on the grain yield, yield components, ajwain essential oil yield, weed control, and the mucilage percent of isabgol as split plot based on RCBD with three replications in Zabol University research farm in 2013. The main factors included two sowing dates of January 09 and February 08. The six additive cropping patterns including sole cropping of ajwain, sole cropping of isabgol, 25% isabgol + 100% ajwain, 50% isabgol + 100% ajwain, 75% isabgol + 100% ajwain, 100% isabgol + 100% ajwain comprising subplot. The results revealed that delayed sowing led to significant increase in ajwain essential oil percentage, however, seed and biological yield, essential oil yield and 1000-seed weight of ajwain decreased by 12.31, 13.7, 0.5 and 35.1%, respectively. In addition, sowing delaying did not have significantly impact on grain and biological yield of isabgol. Intercropping patterns significantly reduced yield and yield components of both crops. The highest seed yield of ajwain (2309 kg.ha-1) and isabgol (539 kg.ha-1) were obtained in sole cropping. The lowest dry weight of weeds was obtained from the planting date of January and cropping pattern of 100% isabgol + 100% ajwain. The highest LER was observed in cropping patterns of 50 and 75 of isabgol + 100% ajwain, that it is indicated yield advantage in intercropping over monocropping.