Sadegh Afzalinia; Seyed Ebrahim Dehghanian; Khadijeh Alijani; dadgar mohammadi; Seyed Mashaallh Hosseini; Afshar Estakhr; Seiid Mansur Alavimanesh; Mashaallah Zare
Abstract
In this research, effect of tillage and planting methods (planting on permanent raised beds, no-till, and conventional tillage) on soil properties such as bulk density, moisture content, and organic carbon and water consumption, water productivity, and crop yield was evaluated in the form of randomized ...
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In this research, effect of tillage and planting methods (planting on permanent raised beds, no-till, and conventional tillage) on soil properties such as bulk density, moisture content, and organic carbon and water consumption, water productivity, and crop yield was evaluated in the form of randomized complete blocks experimental design with three treatments and six replicates in corn-wheat rotation. Results showed that the raised bed planting had the maximum forage corn (95.33 ton/ha) and wheat yield (7.01 ton/ha) and no-till had the minimum silage corn (87.06 ton/ha) and wheat yield (5.23 ton/ha) which had no significant difference with the conventional tillage. Forage corn consumed the maximum water (9531 m3/ha) in the conventional tillage and the minimum water (8155 m3/ha) in no-till; while, there was no significant difference between treatments from the water productivity point of view. Wheat consumed the maximum water (7177 m3/ha) in raised bed planting, but there was no significant difference between treatments from the stand point of water productivity. Results also showed that conservation tillage methods increased soil moisture content in forage corn planting (around 11%), but had no significant effect on the soil moisture content in wheat planting.
Sadegh Afzalinia; Alidad Boostani; Abdolhamid Karimi; dadgar mohammadi; Seiid Mansur Alavimanesh; Mashaallah Zare; Ali Nouroozi
Abstract
In this research, effects of water sprayed over the upper layer of the mowed and rowed alfalfa (before baling) on quantitative and qualitative losses of alfalfa during baling process were evaluated. The study was conducted in the form of split plot experiment with 12 treatments and three replications ...
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In this research, effects of water sprayed over the upper layer of the mowed and rowed alfalfa (before baling) on quantitative and qualitative losses of alfalfa during baling process were evaluated. The study was conducted in the form of split plot experiment with 12 treatments and three replications from 2020 to 2022. Main plots were the amount of water sprayed on the alfalfa with four levels of water (0, 250, 350, and 450 liters per hectare). Subplots were the time interval between spraying water on alfalfa and baling operation (0, 30, and 60 minutes after spraying water). Alfalfa losses at the baler pickup and compression chamber, during transportation, and total losses were measured. Alfalfa dry matter, crude protein, fat, organic matter, ash, acid detergent fiber, neutral detergent fiber was measured, and amount of aflatoxin were also detected after six months of storage. Results showed that spraying 450 L water per hectare decreased alfalfa losses at baler pickup and compression chamber, transportation, and total losses by 20.4, 34.3, 4.7, and 21.1% respectively, compared to the control treatment. Time interval between spraying water on alfalfa and baling time had no significant effect on alfalfa losses during baling operation and transportation. Results also indicated that spraying water on alfalfa before baling operation had no significant negative effects on alfalfa quality after six months storing and did not reduce alfalfa quality during storing time.
Aliakbar Solhjou; Seiid Mansur Alavimanesh
Abstract
The factors influencing the efficiency of tillage tools are such as soil moisture content, tool geometry and forward speed. This study was a spilit-spilit plot experimental design with three replications to determine the effect of new bent leg tillage on soil pulverization. Treatments were three soil ...
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The factors influencing the efficiency of tillage tools are such as soil moisture content, tool geometry and forward speed. This study was a spilit-spilit plot experimental design with three replications to determine the effect of new bent leg tillage on soil pulverization. Treatments were three soil moisture content levels of 7-10, 10-13 and 13-16 as the main plots, three forward speeds of 5, 7.5 and 10 km/h as the sub-plots and three blade spaces of 12, 16 and 20 cm as the sub-sub-plots. In this research, the effect of bent leg tillage on soil moisture content, forward speed and clod mean weight diameter (MWD) were studied. Results indicated that forward speed, shank spaces and soil moisture content during tillage affected MWD. Increasing forward speed and soil moisture content during tillage and also reducing blade spaces reduced MWD. The findings show that the technology of the new bent leg tillage has the potential to increase forward speed during tillage operation with reducing MWD. Also, it can improve work-rate and reduce the time of seed-bed preparation.
Mohammad Ali Rostami; Seiid Mansur Alavimanesh
Abstract
In this research suitability of dimension and size, location of some control equipment’s and driver surroundings with dimension, sizes and abilities of tractor drivers in Fars province was evaluated. Anthropometric data was essential requirement for adjustment of machine equipments with potentiality ...
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In this research suitability of dimension and size, location of some control equipment’s and driver surroundings with dimension, sizes and abilities of tractor drivers in Fars province was evaluated. Anthropometric data was essential requirement for adjustment of machine equipments with potentiality and competence of human. In this project the first necessary anthropometric data, for about 250 tractor drivers that were in age range of 20–60 year was measured randomly. The next some of prevalent tractors specifications in Fars province with anthropometric data of fifth and ninety and fifth percentiles of drivers was compared and evaluated. The results showed that stair space of evaluated tractors from the ground was more than optimum range. Chair depth of New Holland and Valtra tractors for fifth percentile drivers was great and for elimination of this difficulty proper seat back with adjustable thickness was recommended. The surveys showed that chair depth of model 285 and 399 of massey furgousen tractors was shorter than thigh length of ninety and fifth percentile drivers, which caused the driver’s discomfort. In massey furgousen tractor model 285 and Valtra tractors distance of steering wheel from seat reference point was more than hand length of fifth percentile drivers. Therefore the length of drivers hand was considered to be short for proper grip on steering wheel. The surveys showed that the drivers of massey furgousen tractors (Model 399) faced difficulty in for accessing the gear lever.
