Masoud Lakzaei; Ali Nakhzari Moghaddam; Mehdi Mollashahi; Abbas Biabani
Abstract
In order to investigate the effect of planting pattern and nitrogen and megafol on grain yield, yield components, and seed protein of chickpea (Cicer arietinum L.) under rainfed conditions, a factorial experiment has been conducted in a randomized complete block design with three replications in Gonbad ...
Read More
In order to investigate the effect of planting pattern and nitrogen and megafol on grain yield, yield components, and seed protein of chickpea (Cicer arietinum L.) under rainfed conditions, a factorial experiment has been conducted in a randomized complete block design with three replications in Gonbad Kavous University farm during growth season of 2017-2018. The planting pattern is in three levels of 30×11, 45×7.4, and 60×5.5 cm (30 plants. m-2) and the factor of use of fertilizers in five levels of non-consumption and consumption of 50 and 100 kg nitrogen and one and two liters of megafol per hectare. The results show that the highest seed yield is related to 30×11 and 45×7.4 and the lowest is related to 60×5.5 cm. Seed per plant and seed yield in application of 100 and 50 kg N ha-1 has been higher than others. The highest and the lowest protein percentage of seeds is related to 60×5.5 and 30×11 cm. 1000-seed weight in application of 100 and 50 kg N ha-1 and 2 liters of megafol has been more than other treatments. The harvest index in application of fertilizer is the maximum and in treatment of non-application of fertilizer is the minimum. In addition, because of more effect of nitrogen on seed yield compared to megafol and non-significant differences between consumption of 100 and 50 kg N ha-1, it seems that consumption of 50 kg N ha-1 and planting pattern of 30×11 is the most appropriate advice for planting of rainfed chickpea in Gonbad Kavous condition.
Mehrnoosh Garshasbi; Mohammad Rafieiolhossaini; Sina Fallah; Ali Ashraf Jafari; Shamsali Rezazadeh
Abstract
Some medicinal plants have an important role in production of fodder with high quality. While reducing the production costs, they protect the environment, water, and soil resources. On the other hand, mixed cultivation and application of organic and biological fertilizers or proper combination of these ...
Read More
Some medicinal plants have an important role in production of fodder with high quality. While reducing the production costs, they protect the environment, water, and soil resources. On the other hand, mixed cultivation and application of organic and biological fertilizers or proper combination of these two with chemical fertilizers can be considered a solution to increase crop yield in sustainable agriculture. For this purpose, in order to investigate the effects of different treatments of fertilizer and ratios of mixed cultivation of Chicory and annual Medic, a factorial experiment has been conducted in a randomized complete block design with three replications at the experimental field located in Behbahan city in 2019-2020 growing season. The first factor has been different fertilizer sources (Chemical, Organic, and Integrated) in three levels: chemical fertilizer, vermicompost fertilizer and combined fertilizer (nitroxin biofertilizer + fertile phosphate 2 + 50% chemical fertilizer) and the second factor has been five intercropping patterns including: sole chicory (SC), sole annual medic (SM), one row of chicory: one row of annual medic (C1M1), one row of chicory: two rows of annual medic (C1M2) and two rows of chicory: one row of annual medic (C2M1). The studied traits are forage yield of chicory and annual medic and quality characteristics of forage including percentage and yield of crude protein, percentage of ash, crude fiber, dry matter digestibility, calcium, and phosphorus content of forage. The results show that the highest dry forage yields of chicory and medic (4.04 and 4.63 t/ ha, respectively) are obtained in monoculture and chemical fertilizer treatment. Mixed cultivation ratios and application of combined fertilizers and vermicompost improve crude protein and ash of medic and crude fiber of chicory forage without reducing any other quality traits. Evaluation of land equivalent ratio show the superiority of all mixed ratios over monoculture of these plants. Finally, mixed cultivation treatments C1M1 and C2M1 with a land equivalent ratio of 1.3 and a total yield of 5.44 and 4.95 tons per hectare and the application of combined fertilizer are recognized as superior treatments.
Afsaneh Badalzadeh; Mohammad Rafieiolhossaini; Abdolrazzagh Danesh Shahraki; Mehdi Ghobadinia
Abstract
In order to evaluate the effect of water deficit and different fertilizer levels on yield and some agro-morphological characteristics of Moldavian balm, a split plot experiment was conducted in a randomized complete block design with three replications at the research farm of Shahrekord University during ...
Read More
In order to evaluate the effect of water deficit and different fertilizer levels on yield and some agro-morphological characteristics of Moldavian balm, a split plot experiment was conducted in a randomized complete block design with three replications at the research farm of Shahrekord University during 2013-2014 growing season. Main factor was three levels of irrigation regimes including: 100 (control), 75 and 50 percent of water requirement while 6 levels of manure application including: 1) no amended fertilizer (control), 2) 25 percent urea + 75 percent cattle manure, 3) 50 percent urea + 50 percent cattle manure, 4) 75 percent urea + 25 percent cattle manure, 5) 100 percent urea and 6) 100 percent cattle manure, were used as subplot. The maximum plant height and number of flowering branch was observed for 100 percent urea and the maximum flowering branch dry yield was related to 50 percent urea + 50 percent cattle manure. The maximum plant height and number of flowering branch was achieved from 100 percent plant water requirement. The maximum leaf, shoot dry weight and dry matter yield was related to 50 percent urea + 50 percent cattle manure with 100 percent plant water requirement. In total, in order to obtain the maximum dry matter yield, application of 50 percent urea with 50 percent of cattle manure and full irrigation is recommended.
Parastoo Pahlevanloo; Majid Rahimizadeh; Mohammad Reza Tookalloo
Abstract
In order to investigation nitrogen use efficiency in intercropping of maize and soybean an experiment was conducted with split plot arrangement in a randomized complete block design with three replications in 2012 in Bojnourd (North Khorasan). Nitrogen fertilizer rate was as a main factor at three levels ...
Read More
In order to investigation nitrogen use efficiency in intercropping of maize and soybean an experiment was conducted with split plot arrangement in a randomized complete block design with three replications in 2012 in Bojnourd (North Khorasan). Nitrogen fertilizer rate was as a main factor at three levels (control, 50 percent lower than recommended N rate, recommended N) and five mixing ratio treatments were (0:100, 50:50, 66:33, 100:0 and 100:25 corn and soybean) as subplots within the main plots. Results indicated that nitrogen and intercropping system had significant effect on yield and nitrogen use efficiency. Nitrogen fertilizer increased nitrogen use efficiency, economical yield and land equivalent ratio. The highest nitrogen use efficiency, economical yield and land equivalent ratio were obtained in mixture of 50:50 corn and soybean under nitrogen recommended rate that 131, 16 and 21 percent higher than sole cropping, respectively. Therefore, intercrops could be used for more efficient use of N on a per land area basis.
sodabe norzad; Ahmad ahmadian; Mohammad Moghaddam; elham daneshfar
Abstract
To study the effect of drought stress during using organic and chemical fertilizers on morphological, agronomic traits and the essential oil of coriander, a field experiment was conducted as split plot based on randomized complete block design in three replications at Agricultural Research Station, College ...
Read More
To study the effect of drought stress during using organic and chemical fertilizers on morphological, agronomic traits and the essential oil of coriander, a field experiment was conducted as split plot based on randomized complete block design in three replications at Agricultural Research Station, College of Agriculture, University of Torbat Heydarieh, Iran during growing season of 2010-2011. Treatments were consisted of three levels of drought stress (30, 60 and 90 percent FC) and fertilizer treatments [control, NPK (60: 60: 40), caw manure (25 ton/ha) and vermicompost (25 ton/ha)]. Different traits such as plant height stem diameter, number of branches, number of leaves per plant, fresh and dry weight, herbage yield and number of umbels per plant, number of seeds per umbel, total number of seeds in plant, fruit yield, 1000 seed weight and essential oil percentage and yield were recorded. Analysis of variance indicated that water stress and application of fertilizer treatment had significant effect on all studied trait. The maximum herbage yield (5371 kg/ha) and seed yield (3905 kg/ha) were achieved in 90 percent FC combined with NPK and mild stress under NPK treatment, respectively. The highest essential oil percentage (0.77 percent) and essential oil yield (18.49 kg/ha) were obtained in mild stress by using chemical fertilizers. According to the fact that application of fertilizers in mild stress conditions leads to increase in essential oils yield, using chemical fertilizers under mild drought stress is recommended for coriandering as a medicinal plant.