Volume 46 (2023)
Volume 45 (2022)
Volume 44 (2021)
Volume 43 (2020)
Volume 41 (2018)
Volume 40 (2017)
Volume 39 (2016)
Volume 38 (2015)
Volume 37 (2014)
Volume 36 (2013)
Volume 35 (2013)
Volume 34 (2011)
Volume 33 (2010)
Volume 32 (2010)
Volume 30 (2008)
Volume 29 (2007)
Volume 28 (2005)
Volume 27 (2005)
Volume 25 (2002)
Volume 21 (1999)
Volume 15 (1991)
Volume 14 (1991)
Volume 11 (1987)
Volume 8 (1983)
Volume 7 (1980)
Volume 5 (1978)
Volume 4 (1977)
Volume 2 (1976)
Volume 1.31 (1975)
Comparison of soil, foliar and fertigation application of humic acid on growth parameters and availability of iron and phosphorous of canola

T. Nazari; M. Baranimotlgh; E. Dordipour; R. Ghorbani nasrabadi; S. Sefidgar Shahkolaee

Volume 42, Issue 4 , March 2020, Pages 1-14


  Introduction One of the most important needs in crop planning is the evaluation of different systems of plant nutrition. plant nutrition in a correct way can preserve the environment and increase efficiency of agricultural inputs. Humic acid contains many nutrients that increase the soil fertility and ...  Read More

Fabrication and Evaluation of a force amplifier system for clutch pedal in MF285 Tractor

S. Rostami; B. Hosseinzadeh; O. Bahrami

Volume 42, Issue 4 , March 2020, Pages 15-24


  Introduction Clutches are widely used in various vehicle powertrains system. Unlike cars, tractors use a dual clutch system for smooth operation of the external power takes off shaft. The dual clutch system allows the operator, while working with an implement, to change gears without affecting on the ...  Read More

The effect of chemical and biological treatments on compost maturity

H. Sorkheh; A. Moezzi; N. Enayatizamir

Volume 42, Issue 4 , March 2020, Pages 25-40


  Introduction In Khuzestan province, Iran, huge amounts of organic waste is generated annually, leading to challenges for its safe disposal, with the waste being usually either burned or land filled.Agro-industrial wastes such as sugarcane pith, have been recognized as important renewable sources ...  Read More

Study of colonization ability and effect of phosphate solubilizing bacteria isolated from dry-land farming on wheat growth indices under stresses of water deficit and salinity

E. Shirmohammadi; H.A. Alikhani; A.A. Pourbabaee; H. Etesami

Volume 42, Issue 4 , March 2020, Pages 41-53


  Introduction The use of invitro hydroponic culture is one of the useful and practical methods for selection of superior isolates of plant growth promoting rhizobacteria with high colonization potential at root surface. In this regard, the present study was designed to select superior isolates isolated ...  Read More

Effect of topography on soil properties, yield and quality of tea in Lahijan region

N. Yaghmaeian Mahabadi; N. Nobahar Deylami; M. Rahimi Mashkaleh; A. Fatemi Chookami

Volume 42, Issue 4 , March 2020, Pages 55-74


  Introduction As one of the pedogenic factors, topography can be an important and effective factor on yield and quality of crop performance through affecting water distribution and soil properties in different landscape positions. This factor affects soil properties by changing the altitude, steepness ...  Read More

Digital soil mapping of land suitability index of rain-fed wheat (Case study: Ghorveh, Kurdistan Province)

L. Rasoli; K. Nabiollahi; R. Taghizadeh Mehrjardi

Volume 42, Issue 4 , March 2020, Pages 75-87


  Introduction Rapid population growth in developing countries implies that more food will be required to meet the demands of this population. Wheat as one of the most important grain crops in the world is a great source of food for human which is planted under a wide range of environments and its production ...  Read More

Determination of soil organic carbon distribution along with affecting factors using random forest model in Ravang Minab watershed

F. Torkamani; H. Piri Sahragard; M.R. Pahlavan Rad; M. Nohtani

Volume 42, Issue 4 , March 2020, Pages 89-104


  Introduction Spatial variations of soil properties is a natural event, which recognizing these changes is inevitable in order to planning and right management of both agricultural and natural resources. Soil organic carbon (SOC) is the most important factor in soil fertility and quality, climate change ...  Read More

The effect of temperature and cow manure on biogas production from sugarcane bagasse

M.J. Malekzadeh; M. Kiani Dehkiani; M. Sajadiyeh

Volume 42, Issue 4 , March 2020, Pages 107-117


  Introduction The limitation of fossil fuels and environmental pollution by using them have encouraged researchers toward renewable fuels.  The most important renewable fuels are bioethanol, biodiesel and biogas. Biogas is a gas that is produced from biodegradable fermentation, agricultural products ...  Read More