Sami Marof's Lab

Featured research (9)

Some crops perform better in intercropping systems with other crops relative to their solcropping. Sunflower (Helianthus annuus L.) was adopted to be studied in a field experiment within an additive intercropping system with mungbean (Vigna radiata L.) in a three rows in combinations (1:3 and 1:4 and 1:5) sunflower-Mung bean intercropped and sole cropped for studding growth , yield components and yield traits during the summer of 2021 at two different agro ecological locations of the governorate of Erbil-Iraq. Experiments were triplicated in a randomized complete block design (RCBD), Each location was a parcel of a local farmers land in the villages of Shamamr (Latitude: 406227, Longitude: 397954 rainfall isocline (350 mm y-1)) and Dukalla (Latitude: 358033 m, Longitude: 3993384 m),at the last of the semi insured and the first of the non-insured rainfall zones respectively. Shamamr location suppressed Dukalla location in most of morphological traits at the ages of 20 days after sowing (DAS), nd 60 DAS. Treatment row combination (1:3, 1:4 and 1:5) showed advantages in yield component traits over sole cropping of sunflower might be due to resources gains as solar radiation, conditioning heat environment and space .No advantages of intercropping were observed among cropping systems in seed yield while the treatment (1:5) possessed the highest Harvest index (0.6). Sunflower in Shamamr location is believed to perform better under intercropping system. More planting geometry is recommended to obtain more precise results.
Three different wheat and triticale genotypes (two wheats; CYMMIT and Aras, and one triticale Rwaida) were evaluated under five late sowing dates at Einkawa farm of Erbil Dry-land Research Center, KRG-Iraq (Lat 35 0 0 0 38 00 N Long 43 0 0 0 24 00 E) for two growing seasons 2015-2016 and 2016-2017 to test any agronomic variance characteristics as a strategy to reduce risks attributable to inadequate precipitation in order to achieve proper soil plowing humidity. Results pointed to superiority of Rwaida genotype, and earliest Sowing date with their interaction V3D1 in grain yield (193.1, 241.6, and 266 g m À2 respectively) due to higher chlorophyll content in their flag leaves and taller plants that push the flag leaves up to receive higher amounts of irradiance. leading to the conclusion of achieving tillage as soon as possible with the assumption of reducing grain yield to a half when delaying sowing date for more than two months from the advised sowing date in the region (15th Nov.). Ó 2021 The Authors. Production and hosting by Elsevier B.V. on behalf of King Saud University. This is an open access article under the CC BY-NC-ND license (
Two of newly registries of Italian durum wheat cultivars (L 992 and L 430) were grown to compare with Acsad 65 durum wheat cultivar .The cultivars were planted in seven plant densities in fan design at 2008-2009 growing season to search the possibility of their introducing to Erbil. This effort comes through the scientific corporation between Salahaddin / Erbil and Fujie / Italy universities. Number of spike bearing tillers, leaf area per plant (LA), leaf area index (LAI), number of spikes per plant, number of spikelet s per spike, shoot dry weight, biological yield, seed yield, Harvest index (HI) were studied. Acsad 65 over yielded both of L992 and L430 cultivars in all yield traits, but L992 and L430 dominated most of the vegetative traits and HI, indicating the conclusion of possible adaptability of the new cultivars to Erbil district. The experiment proves the successful employment of fan design which was applied for the first time in Iraq on wheat crop.
Purpose: The study aimed at assessing the effects of maize-alfalfa intercropping with and without nitrogen fertilization on photosynthetic characteristics, photosynthetic nitrogen utilization efficiency (PNUE) and yield. Methods: A 2-year field experiment with split plot arrangements was conducted to study the effect of different planting patterns (monocropping and intercropping) and N fertilization (N0 and N 225 kg ha-1) on the PNUE of the maize with and without N fertilization in 2018-19. Results: The study findings showed that intercropping under nitrogen fertilizer application increased the yield and dry biomass of the maize crop by 23% and 14% and 25% and 18% respectively in 2018-19. The Land equivalent ratio (LER) was >1, indicating more efficient use of the available resources by intercrops. Furthermore, the leaf chlorophyll, photosynthetic activities and other leaf related traits of maize crop showed an improved efficiency in intercropping when it was practiced with N fertilization, which resulted in a better PNUE as compared to monocropping. Conclusions: The study suggests that intercropping under nitrogen fertilization can improve the leaf photosynthetic activities and PNUE of the maize crop, thereby improving its yield. Therefore, adopting intercropping as an agronomic practice could be crucial for the betterment of the plant, while utilizing the available resources efficiently. The article can be accessed via this link:

Lab head

Sami Marof
  • College of agricultural engineering sciences
About Sami Marof
  • Sami Marof currently works at the Field Crops Department and is chief of scientific affairs of college of agricultural engineering sciences , Salahaddin University - Erbil.

Members (2)

Aryan. S. Dizayee
  • Salahaddin University - Erbil
Lana Marofi
  • Salahaddin University - Erbil