Kamal Sadat Asilan
Abstract
To evaluate the impact from the interaction of nitrogen and herbicides on weed control of maize along with the yield and yield components of maize, an experiment has been conducted in a randomized completer block design as factorial arrangement with three replications at Tarbiat Modares University. The ...
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To evaluate the impact from the interaction of nitrogen and herbicides on weed control of maize along with the yield and yield components of maize, an experiment has been conducted in a randomized completer block design as factorial arrangement with three replications at Tarbiat Modares University. The first factor includes nicosulfuron (2 l.ha-1), 2,4-D+ MCPA (1.5 L.ha-1), weed-infesting, and weed free (hand hoeing) as control. The second factor is application of 350 kg.ha-1 nitrogen from urea source and no nitrogen application as control. Results indicate that application of nitrogen boosts nicosulfuron efficacy in controlling broad- and narrow-leaved weeds, though it does not affect 2,4-D+ MCPA efficacy in controlling broad-leaved weeds. The application of herbicide and nitrogen has no significant effect on corn yield components, but the number of grains per row increase significantly when both nicosulfuron and nitrogen are applied together. Application of nicosulfuron and nitrogen increases the grain yield by 94%, compared with sole application of nicosulfuron. Application of both nitrogen and 2,4-D+ MCPA has no effect on corn grain yield. Results show that the application of nicosulfuron and nitrogen can be the best option for satisfactory weed control and maximum grain yield in the corn.
Jalal Jalilian
Abstract
To determine the effect of farm slopes on yield and some agronomic traits of wheat under different fertilizer treatments, an experiment was performed as split plot based on randomized complete block design with three replications in Piranshahr in 2011-2012. Treatments consisted of farm slope at four ...
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To determine the effect of farm slopes on yield and some agronomic traits of wheat under different fertilizer treatments, an experiment was performed as split plot based on randomized complete block design with three replications in Piranshahr in 2011-2012. Treatments consisted of farm slope at four levels: (zero, 3, 6 and 10 %) as the main plots and combination of different fertilizer at five levels: (control, application of biofertiliozer (Nitroxin), manure, chemicals (N and P) and integration of biological, manure and chemical as sub plots. Results showed that the highest (7.67 t/ha) and lowest (3.68 t/ha) seed yield obtained from farm slope 0 and 10%, respectively. In fact, with increasing of the farm slope, the yield components decreased which lead to 52% and 38% reduction in grain yield and total biomass of plants located on a slope of 10 percent than the control plants. Also, the applications of integrated fertilizer treatments had the most effect on morphological traits and yield components of wheat that increased 12.58 and 13.58 percent the seed yield and total biomass compared to the control plants.
Jalal Jalilian; Azimeh Khade; Alireza Pirzad
Abstract
To study effect of Fe and Zn spraying on some characteristics of mungbean, an experiment was designed as factorial based on randomized complete block with three replications in Urmia University, 2012. Treatments were nutrition systems (organic, chemical, integrated and no nutrition) and micronutrients ...
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To study effect of Fe and Zn spraying on some characteristics of mungbean, an experiment was designed as factorial based on randomized complete block with three replications in Urmia University, 2012. Treatments were nutrition systems (organic, chemical, integrated and no nutrition) and micronutrients (Fe, zinc, no foliar application and water spraying). The plant height, pod length, number of pod, number of grain in pod, and grain yield were obtained from plants treated with organic as well as chemical and integrated fertilization systems. With regards to obtain the maximum biomass (3421.8 kg/ha) and eco-friendly benefits of organic system, it is recommended as suitable fertilization treatment. The highest plant height (37.78 cm) and grain yield (800.8 kg/ha) obtained from Zn spraying, while the highest biological yield (3250.80 kg/ha) from Fe spraying and foliar application of micronutrients were the same, statistically. In conclusion, Zn and Fe spraying cause to increase the yield and yield component of mungbean.