Kamal Sadat Asilan
Abstract
In order to investigate the effect of nitrogen, phosphorus, and potassium elements on fatty acid profiles, oil percentage, grain yield, and flax seed oil, Lirina cultivar, a factorial experiment has been conducted during 2019, based on a randomized complete block design with three replications in Hashtgerd ...
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In order to investigate the effect of nitrogen, phosphorus, and potassium elements on fatty acid profiles, oil percentage, grain yield, and flax seed oil, Lirina cultivar, a factorial experiment has been conducted during 2019, based on a randomized complete block design with three replications in Hashtgerd research farm, Alborz Province. It has employed a factorial arrangement in a randomized complete block design with three replications with the factors involving three levels of nitrogen fertilizers (N1=30, N2=60, and N3=90 Kgha-1, three levels of phosphorus fertilizers (P1=40, P2=80, and P3=120 Kg.ha-1), and three levels of potassium fertilizers (K1=40, K2=80, and K3=120 Kg.ha-1). Result show that the highest amount of linolenic acid (43.99%), linoleic acid (17.68%), and palmitic acid (6.02%) have occurred in 30 kg. ha-1 nitrogen and 40 kg.ha-1 phosphorus. The highest amount of oleic acid (27.49%) and stearic acid (5.25%) belong to 30 kg.ha-1 phosphorus. Based on the results, the highest amount of grain yield (2384 kg.ha-1) and oil yield (939 kg.ha-1) are recorded in 90 and 120 kg.ha-1 nitrogen and phosphorus, respectively. Therefore, according to the results, different levels of fertilizer on percentage of oil has had no significant effect.
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.
Kamal Sadat Asilan
Abstract
A factorial experiment was conducted in a randomized complete block design with three replications at research fields of Faculty of Agriculture of Tarbiat Modares University, during 2017-2018 growing season. Treatments consisted of three different levels of salinity stress (control), salinity of 5 and ...
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A factorial experiment was conducted in a randomized complete block design with three replications at research fields of Faculty of Agriculture of Tarbiat Modares University, during 2017-2018 growing season. Treatments consisted of three different levels of salinity stress (control), salinity of 5 and 10 dS.m-1) and two levels of calcium silicate (control and foliar application of 8 kg.ha-1) which salinity stress was applied from the beginning of flowering and the calcium silicate was applied at flowering time, and dry weight of the plant, grain yield, yield components, harvest index, oil yield, oil percentage and greenness were evaluated. Foliar application of calcium silicate had positive effects on the all of the traits in both Zarfam and Sarigol cultivars and it increased yield in rapeseed. On the other hand, it was observed that Sarigol had a higher amount in number of pods, number of seeds per pod, 1000 grain weight, harvest index, oil percentage, oil yield and greenness index than the Zarfam. Zarfam had the maximum plant dry weight. In addition, it was observed that salinity stress at 5 and 10 dS.m-1 had negative effects on all studied traits in present study. In general, salinity stress reduced the yield and yield components of rapeseed and the use of calcium silicate reduced the negative effects of salinity stress in both Zarfam and Sarigol cultivars and Sarigol cultivar had more resistance than Zarfam cultivar to salt stress and it used more effectively from calcium silicate.