Mohammad-Ali Behaeen
Abstract
A factorial experiment was conducted in the form of a completely randomized design with three replications. Levels of experiment factors was rotational speed of saws in gin machine at three levels; 300 (S1), 350 (S2) and 400 (S3) rpm, seed moisture content at three levels; 5-3 (M1), 8-6 (M2) and 8-10 ...
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A factorial experiment was conducted in the form of a completely randomized design with three replications. Levels of experiment factors was rotational speed of saws in gin machine at three levels; 300 (S1), 350 (S2) and 400 (S3) rpm, seed moisture content at three levels; 5-3 (M1), 8-6 (M2) and 8-10 (M3) and the cotton seed variety at two levels of Hekmat (V1) and Golestan (V2). Variables of length, width, thickness, geometric mean and sphericity coefficient were measured. The seed skin thickness index, the amount of visible trash, the material capacity, the seed germination, seed emergance rate, seed vigor index and relative ion leakage were determined. After analysis of variance, data were compared with DMRT. The results showed that S1M2V2 and S1M1V1 treatments produced the highest and lowest material capacity with 2.40 and 1.90 kg h-1, respectively. Considering the same rotational speed and moisture, the material capacity of the machine in Golestan variety was 12.22% more than Hekmat variety . The regression equations showed that in Hekmat variety, with the increase in the rotational speed, the percentage of seed germination increased and the seed vigor index decreased. In the Golestan variety, increasing the rotational speed, decreasing the percentage of seed germination and increasing the moisture content, caused an increase in seed emergance rate. Rotational speed of 350 rpm, moisture content of 6-8% and Golestan cotton variety produced the maximum germination percentage and seed germination rate with 93.67% and 24.56 seeds per day, respectively, and it is recommended.
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.