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تصميم وتصنيع وتقييم اداء الة حراثة التربة باعماق مختلفة واضافة السماد العضوي واثرها في بعض خصائص التربة وحاصل نبات زهرة الشمس (Helianthus annus L.) == Design, manufacture and evaluate its mechanical performance an implement operating at different plowing depths and adding manure to the soil and studying its effect on some soil properties and yield of sunflower plant (Helianthus annus L.)
Author name:
مرتضى عبد العظيم عبد النبي الفارس
Supervisor name:
شاكر حنتوش عداي | كوثر عزيز حميد الموسوي
General topic:
Agricultural sciences
Specific topic:
Soil and Water
Degree:
Master
University:
University Of Basrah - Faculty Of Agriculture
Language:
Arabic
University location:
Basrah
First pages:
31T1860 - p.pdf
Abstract:
combined agricultural implement was designed and manufactured in agricultural machines and equipment dept., Agriculture College, Basrah University 2015 A.D. the implement plows and disturbs the soil in different depths. The upper soil depth is plowed while the lower depth is disturbed. The implement is laying the manure on the soil surface and then mixed with soil dawn to the lower point of the depth.The implement consists of a frame, two moldboard plows, two subsoilers and three tines for pulverizing the soil and mixing the manure with it. The machine was provided with two - tons tank for manure. The manure is laid on the soil surface and in the furrow bottom which made by the moldboards plow by manure feeding mechanism.The manure broadcasting (feeding) mechanism was evaluated using four rotational speeds (390, 460, 650, and 890) Revs. min - 1, three implement forward speeds 0.20, 0.27, and 0.37 m sec - 1 and two manure feeding opening areas (150 and 300 cm2)( number of opening are three). The results were analyzed using C.R.D. (2 x 3x 4) for three replicates. The highest manure laying amount (94 tons ha - 1) was recorded for highest rotational speeds of feeding mechanism, (840 Rev. min - 1 ) and lowest forward speed (0.20 m sec - 1) and the greatest opening feeding area (300 cm2).The implement performance was evaluated using R.C.B.D. with three replicates,(2 x 3) (MB depth are 2 x subsoil depth are 3). The biological experimental carried out using implement depths of are 40, 50 and 60 cm. The MB depth are M20 = 20 cm and M30 = 30cm and three subsoilers depth S20, S30, S40 with MB depth of 20 cm and S10, S20 and S30 cm with MB depth of 30 cm accordingly, the implement combinations are M20S20, M20S30 and M20S40 and M30S10, M30S20 and M30S30.The draft force requirements, soil disturbed area and pulverization index of the implement were measured while the energy utilization efficiency, the specific energy, the equivalent energy and the pulverization energy efficiency were calculated.The biological experiment were carried out using two manure levels, three implement operating depths, 40, 50, and 60 cm and six soil depth (2 x 6 x 6). The manure levels are zero (OM0) and 45.50 ton ha - 1 (OM1), the implement combinations depths are M20S20, M20S30, M20S40, M30S10, M30S20 and M30S30 and the soil depths (0 - 10)d1, (10 - 20)d2, (20 - 30)d3, (30 - 40)d4, (40 - 50)d5 and (50 - 60)d6 (cm).The soil was plowed and prepared for planting. The chemical fertilizer was added in a single application before planting. The Seeds of Sunflower (Helianthus annus L.) were sowing on 15/9/2015. The Seeds were irrigated using drip irrigation method. The amount of irrigation was applied according to the basin of evaporation, the amount added is 100% of evaporated amount from the basin with 20% extra amount as soil leaching requirement. The crop was harvested after 90 days of the sowing date.The results showed the following : 1) The draft force requirement, the disturbed area and the EUE increased as the depth of MB increased from 20 to 30 cm. The highest values recorded for prior’s parameter are 20.45 kN, 0.29 m2 and 14.34 m3 MJ - 1 respectively.2) The highest values for the draft force requirement, disturbed area and EUE were recorded for machine depth 60 cm. The values are 36.17 kN, 0.59 m2 and 16.41m3 respectively.3) The soil pulverization index (Pi) increased while the specific energy (SE), equivalent energy (eq. E) and pulverization efficiency (P E) decreased when the operating depth of MB increased from 20 to 30 cm. (Pi) increase from18.80 to 27.09 mm and (S E) decreased from 47.70 to 32.00MJ m - 3, (eq. E) 87.30 to 69.80 MJ m - 3 and (P E) 54.70 to 45.90% respectively.4) P.I. increased as the implement depth increased its values are 31.56 and 29.58 mm for treatments M20S40 and M30S30 respectively. SE increased also, and its values are 61.00 and 67.70 kJ.m - 3 while eq E values decreased and its values are 23.53 and 20.84 kJ m - 3 and 38.60 and 30.80% for M20S40 and M30S30 respectively.5) After crop harvesting (end of the season) the moisture content increased to 30.02% for the same treatment but without significant difference with other treatments. The soil moisture content increased with soil depth.6) The manure application increased the total soil porosity, infiltration rate, average of infiltration, while the soil bulk density, soil penetration resistance and ECe decreased with manure application.7) The soil bulk density and the soil total porosity decreased after the plowing operation compared with unplowed soil. After the crop harvesting the soil bulk density increased whereas the soil total porosity decreased, M30S30 treatment recorded the lowest soil bulk density and the highest soil total porosity. The bulk density value is 1.17 Mg m - 3 and the soil total porosity is 55.70%. The soil bulk density decreased while the total porosity increased with soil depth.8) The plowing operation increased MWD compared with unplowed soil. M30S30 gave the highest value of MWD at the end of the crop growing season compared with other treatments. The value of MWD is 0.41 mm. MWD decreased with soil depth.9) The accumulation infiltration and the infiltration rate increased at the end of growth season compared with unplowed soil. M30S30 treatment recorded the highest value for both parameters which they are 423.35 mm and 1.09 m min - 1 at the end of measuring period (240 min) respectively.10) The soil penetration resistance for plowed soil decreased compared with unplowed soil. M30S30 recorded the lowest value (1303 kN m - 2) compared with other treatment. The soil penetration resistance increased with soil depth at the end of growing season.11) The soil Ec of the plowed was lower than that for unplowed soil. M30S30 reduced Ec more than the other treatment. Ec of for M30S30 is 6.77 dS m - 1 Ec of the soil increased with depth at the end of the growing season.12) The plant height, the crop biological yield and seed yield increased considerately for plowed soil treated with manure, compared with plowed soil only. M30S30 gave the highest values for plant height, biological yield and seed yield which they are 143.00 cm, 22.00 ton ha - 1 and 4.02 ton ha - 1 respectively.
