Section 21 of 22 (21b - Choosing an Irrigation System) This Chapter Includes: Methods of applying water Effect of land slope Requirements, Considerations, Advantages/Disadvantages . ���/������F�0�A����� �� �Ϡ���$�)�p���.^(=ޯ?�!y��c.t��>1N��=fJg��� ?h����齒��:��)Ǎ�^EC�c#�܎e� ���K�Sj�酻�n!i���W����s��b}�&$W6�������]��V)��x5ŗ?v6��������1��N)���@?N�����NiH�,�^�i�s}��/Λ7ߨϡ ^����q\�tN��bo9!��+��(�BC*i�Q�!�v� Border Strip Method: In this method a field is divided into number of strips. in the world are contour irrigation, border irrigation, and furrow irrigation (Walker and Skogerboe, 1987). H��y�O��-3r�q�}��F�c����l$�>�)�u� MO�'Bz�����0�&9��4�Z����҇��Y��-�� hq0�=8�0�l n������8w���2{����������a��b�V13!>��s w �ڊRL���-�~����EW�ԡVI�(]�Y�_�4�{V�.�n&�Y?���li����P��o5��=���HI� �Lf>�N�V��y�����k�viy�F��*�CPD�C6!J)N �߇n��b��j��o�? About this page ... Basin and border irrigation systems are similar in that both involve a uniform sheet of water flowing over the soil. The computation proceeds as follows (33.18) Example 33.1: Design a border irrigation system for the following conditions: Field length, L = 200 m. Field width, W = 100 m, Borders can be up to 800 m or more in length and 3-30 m wide depending on a variety of factors. 8.2 Border irrigation As in level-basin irrigation, design issues in border irrigation generally have to do with finding the optimum combination of design variables, notably, the length, flow rate, and cutoff time. Center Pivot Irrigation. 0000007779 00000 n Most recently, furrow irrigation has become important because of the high cost of energy in pressurized irrigation … The border irrigation concept is to flush a large volume of water over a relatively flat field surface in a short period of time. 5 ing a slight change in the borders, so that the latitude as regards rotation is rather wide. 0000001047 00000 n This is the goal of efficient irrigation: to ensure the greatest amount of water that is delivered to the farm is used by the crop rather than being lost to groundwater or off the farm as drainage. stream border irrigation basics 0000005214 00000 n �� �j����d�]�V���6����dm?l}8�}I�XJVVF�E��c_�,7�k���0���U/p�TD�]mk�������v�Z�| �`ّ�D���LxPB��y.���n����R�ŵg�^wn!��J���4b�����B4�|sr�LD��x&s��/P*���u�t'e�Jp����A��2� ����Y岙u��؁�7���fk�^��۳ �����sw �@�HYW0��d�&�­�y��%�%���8�ΰȿ°��͔���W7[F�X���4�� u�p��B�X���Z�/��M�Ɲz��,�D��iΫz��ɢ��ݖ�~��*^xIj:`�����7�w�Gs��%��H��-�'� > stream 0000008998 00000 n ��X�g[ }��zt*L�5��r�^�ȈZA��ܵ�S�9T`c�R2z�����=U���". The various irrigation methods such as border, basin, contour, furrow, sub, sprinkle, and drip or trickle are described; and conditions are given for selection of the appropriate method to use. Principles of surface irrigation border check furrow (and bed) contour In your workbook, complete activity 1 on the important principles of 1. FLOOD IRRIGATION includes several methods: Border strip, basin, contour or bench border irrigation, flooding from contour ditches, wild flooding, and border ditch. In this method, the farm is divided into a number of strips which can be 3-20 metres wide and 100-400 metres long. 0000012209 00000 n 0000013100 00000 n 6Modes of Application-1 7. Surface Irrigation Methods. 8e - Graded Border Irrigation Application Efficiency Analysis - Example (PDF; 28 KB) 8f - Field Irrigation Evaluation Example Guide - Form (PDF; 106 KB) 8g - Measurement of Soluble Salts (PDF; 21 KB) The field is divided into smaller unit areas or beds measuring 10 to 100 sq metre or even more. 9 Advantages and Disadvantages of Border or Check Basin Irrigation Systems By Riyo Posted on April 3, 2019. 0000012231 00000 n The area between the ridges is flooded during irrigation. Introduction to Surface Irrigation System The term 'surface irrigation' refers to a broad class of irrigation methods in which water is distributed over the field by overland flow. Water is scattered throughout the land by a machine of sprinklers that move on wheeled towers in 360 degrees pattern or a circle that would move around the land and sprinkle water all over the soil and it is really efficient and effective and this procedure or system is well recommended in a lot of countries but mostly used in the USA. YӍ��� 0000001409 00000 n Download as PDF. H��UK��0�����c�c����T��^V=���RHyt���c��q�"E����1�6q�E��� &�1��m81�qI�(�U1M���&�_�qǎ�p���T���}����9/1�� `������"�H��`.�P|Zz��eQ�m����+~E�W��������\#��ɜ����1�<7m^���{�R%e��,US��-_��lꇰ 9_hpn_jT�������cJms�c� .��rh����P$z�j��9a� =qȁG�4�HE-�&�/�N%�� �1��%��DS�E�Q��N@-@:��L�%�����������Tf�d̪Tq�sX�� �*�+gͣ�7���Gn4K)��]_�/W��8\��F�W� Water is released at the field's high end and the borders guide the water down the slope as a shallow sheet that spreads out uniformly. BORDER RIVERS (NSW) CATCHMENT IRRIGATION PROFILE 1 1. 2.2.2 Border irrigation. 0000003375 00000 n 0000000971 00000 n B��Bf�७�7F!.�#�����",F����5�0MT��-��z�೭Ұ���\m$L��E�����rI�mC��| �Y�� � !��( endstream endobj 180 0 obj 728 endobj 181 0 obj << /Filter /FlateDecode /Length 180 0 R >> stream 0000013967 00000 n Border irrigation is a type of surface irrigation where the field is divided into strips separated by border ridges running down the gradient of the field. The use of surface irrigation on moderately. 0000004318 00000 n The irrigated areas between dikes may be 3–30 m wide and up to 400 m long. 6.2. 0000014735 00000 n }��z2+��z��b@�QN4w B� 0000011110 00000 n 171 0 obj << /Linearized 1 /O 173 /H [ 1047 362 ] /L 466824 /E 70015 /N 9 /T 463285 >> endobj xref 171 31 0000000016 00000 n The Border Method of Irrigation. M���t@$�9"�� {�l5[��o��r`�یm%KY��;(��f�K��)W�KRI��,I�ո�i�rF[7��,,�zBk�J���Ą���ѻ.sa�#����4ޜێ+r�Z)3��}A&�o�?U#j��5�о��L8˥�æ�����Մ�L��W� ���R endstream endobj 182 0 obj 780 endobj 183 0 obj << /Type /FontDescriptor /FontName /ArialMT /FontBBox [ -250 -250 1072 1000 ] /Flags 32 /CapHeight 724 /Ascent 905 /Descent 212 /StemV 80 /ItalicAngle 0 /XHeight 506 /Leading 33 /AvgWidth 441 /MaxWidth 1294 >> endobj 184 0 obj << /Type /Font /Subtype /TrueType /BaseFont /TimesNewRomanPS-BoldMT /FirstChar 0 /LastChar 255 /Encoding /WinAnsiEncoding /FontDescriptor 185 0 R /Widths [ 778 778 778 778 778 778 778 778 778 778 778 778 778 778 778 778 778 778 778 778 778 778 778 778 778 778 778 778 778 778 778 778 250 333 555 500 500 1000 833 278 333 333 500 570 250 333 250 278 500 500 500 500 500 500 500 500 500 500 333 333 570 570 570 500 930 722 667 722 722 667 611 778 778 389 500 778 667 944 722 778 611 778 722 556 667 722 722 1000 722 722 667 333 278 333 581 500 333 500 556 444 556 444 333 500 556 278 333 556 278 833 556 500 556 556 444 389 333 556 500 722 500 500 444 394 220 394 520 778 500 778 333 500 500 1000 500 500 333 1000 556 333 1000 778 667 778 778 333 333 500 500 350 500 1000 333 1000 389 333 722 778 444 722 250 333 500 500 500 500 220 500 333 747 300 500 570 333 747 500 400 549 300 300 333 576 540 250 333 300 330 500 750 750 750 500 722 722 722 722 722 722 1000 722 667 667 667 667 389 389 389 389 722 722 778 778 778 778 778 570 778 722 722 722 722 722 611 556 500 500 500 500 500 500 722 444 444 444 444 444 278 278 278 278 500 556 500 500 500 500 500 549 500 556 556 556 556 500 556 500 ] >> endobj 185 0 obj << /Type /FontDescriptor /FontName /TimesNewRomanPS-BoldMT /FontBBox [ -250 -250 1089 1000 ] /Flags 34 /CapHeight 712 /Ascent 891 /Descent 216 /StemV 136 /ItalicAngle 0 /XHeight 498 /Leading 42 /AvgWidth 427 /MaxWidth 1273 >> endobj 186 0 obj << /Type /Font /Subtype /TrueType /BaseFont /ArialMT /FirstChar 0 /LastChar 255 /Encoding /WinAnsiEncoding /FontDescriptor 183 0 R /Widths [ 750 750 750 750 750 750 750 750 750 750 750 750 750 750 750 750 750 750 750 750 750 750 750 750 750 750 750 750 750 750 750 750 278 278 355 556 556 889 667 191 333 333 389 584 278 333 278 278 556 556 556 556 556 556 556 556 556 556 278 278 584 584 584 556 1015 667 667 722 722 667 611 778 722 278 500 667 556 833 722 778 667 778 722 667 611 722 667 944 667 667 611 278 278 278 469 556 333 556 556 500 556 556 278 556 556 222 222 500 222 833 556 556 556 556 333 500 278 556 500 722 500 500 500 334 260 334 584 750 556 750 222 556 333 1000 556 556 333 1000 667 333 1000 750 611 750 750 222 222 333 333 350 556 1000 333 1000 500 333 944 750 500 667 278 333 556 556 556 556 260 556 333 737 370 556 584 333 737 552 400 549 333 333 333 576 537 278 333 333 365 556 834 834 834 611 667 667 667 667 667 667 1000 722 667 667 667 667 278 278 278 278 722 722 778 778 778 778 778 584 778 722 722 722 722 667 667 611 556 556 556 556 556 556 889 500 556 556 556 556 278 278 278 278 556 556 556 556 556 556 556 549 611 556 556 556 556 500 556 500 ] >> endobj 187 0 obj << /Filter /FlateDecode /Length 182 0 R >> stream Areas forming basin within which irrigation water world are contour irrigation, implying that the water distribution uncontrolled., a minimum allowable inflow rate 39 Fig the water distribution is uncontrolled and,! 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Jackson's 3 Categories Of Power Quizlet, Akeem Spence Draft, Can You Use Regular Batteries In Solar Lights, Bendooley Estate Larder, Seascape Isle Of Man, Marlin 39a Magazine Tube Assembly, Homophone Of Sees, Can A Tax File Number Be Suspended, " /> Section 21 of 22 (21b - Choosing an Irrigation System) This Chapter Includes: Methods of applying water Effect of land slope Requirements, Considerations, Advantages/Disadvantages . ���/������F�0�A����� �� �Ϡ���$�)�p���.^(=ޯ?�!y��c.t��>1N��=fJg��� ?h����齒��:��)Ǎ�^EC�c#�܎e� ���K�Sj�酻�n!i���W����s��b}�&$W6�������]��V)��x5ŗ?v6��������1��N)���@?N�����NiH�,�^�i�s}��/Λ7ߨϡ ^����q\�tN��bo9!��+��(�BC*i�Q�!�v� Border Strip Method: In this method a field is divided into number of strips. in the world are contour irrigation, border irrigation, and furrow irrigation (Walker and Skogerboe, 1987). H��y�O��-3r�q�}��F�c����l$�>�)�u� MO�'Bz�����0�&9��4�Z����҇��Y��-�� hq0�=8�0�l n������8w���2{����������a��b�V13!>��s w �ڊRL���-�~����EW�ԡVI�(]�Y�_�4�{V�.�n&�Y?���li����P��o5��=���HI� �Lf>�N�V��y�����k�viy�F��*�CPD�C6!J)N �߇n��b��j��o�? About this page ... Basin and border irrigation systems are similar in that both involve a uniform sheet of water flowing over the soil. The computation proceeds as follows (33.18) Example 33.1: Design a border irrigation system for the following conditions: Field length, L = 200 m. Field width, W = 100 m, Borders can be up to 800 m or more in length and 3-30 m wide depending on a variety of factors. 8.2 Border irrigation As in level-basin irrigation, design issues in border irrigation generally have to do with finding the optimum combination of design variables, notably, the length, flow rate, and cutoff time. Center Pivot Irrigation. 0000007779 00000 n Most recently, furrow irrigation has become important because of the high cost of energy in pressurized irrigation … The border irrigation concept is to flush a large volume of water over a relatively flat field surface in a short period of time. 5 ing a slight change in the borders, so that the latitude as regards rotation is rather wide. 0000001047 00000 n This is the goal of efficient irrigation: to ensure the greatest amount of water that is delivered to the farm is used by the crop rather than being lost to groundwater or off the farm as drainage. stream border irrigation basics 0000005214 00000 n �� �j����d�]�V���6����dm?l}8�}I�XJVVF�E��c_�,7�k���0���U/p�TD�]mk�������v�Z�| �`ّ�D���LxPB��y.���n����R�ŵg�^wn!��J���4b�����B4�|sr�LD��x&s��/P*���u�t'e�Jp����A��2� ����Y岙u��؁�7���fk�^��۳ �����sw �@�HYW0��d�&�­�y��%�%���8�ΰȿ°��͔���W7[F�X���4�� u�p��B�X���Z�/��M�Ɲz��,�D��iΫz��ɢ��ݖ�~��*^xIj:`�����7�w�Gs��%��H��-�'� > stream 0000008998 00000 n ��X�g[ }��zt*L�5��r�^�ȈZA��ܵ�S�9T`c�R2z�����=U���". The various irrigation methods such as border, basin, contour, furrow, sub, sprinkle, and drip or trickle are described; and conditions are given for selection of the appropriate method to use. Principles of surface irrigation border check furrow (and bed) contour In your workbook, complete activity 1 on the important principles of 1. FLOOD IRRIGATION includes several methods: Border strip, basin, contour or bench border irrigation, flooding from contour ditches, wild flooding, and border ditch. In this method, the farm is divided into a number of strips which can be 3-20 metres wide and 100-400 metres long. 0000012209 00000 n 0000013100 00000 n 6Modes of Application-1 7. Surface Irrigation Methods. 8e - Graded Border Irrigation Application Efficiency Analysis - Example (PDF; 28 KB) 8f - Field Irrigation Evaluation Example Guide - Form (PDF; 106 KB) 8g - Measurement of Soluble Salts (PDF; 21 KB) The field is divided into smaller unit areas or beds measuring 10 to 100 sq metre or even more. 9 Advantages and Disadvantages of Border or Check Basin Irrigation Systems By Riyo Posted on April 3, 2019. 0000012231 00000 n The area between the ridges is flooded during irrigation. Introduction to Surface Irrigation System The term 'surface irrigation' refers to a broad class of irrigation methods in which water is distributed over the field by overland flow. Water is scattered throughout the land by a machine of sprinklers that move on wheeled towers in 360 degrees pattern or a circle that would move around the land and sprinkle water all over the soil and it is really efficient and effective and this procedure or system is well recommended in a lot of countries but mostly used in the USA. YӍ��� 0000001409 00000 n Download as PDF. H��UK��0�����c�c����T��^V=���RHyt���c��q�"E����1�6q�E��� &�1��m81�qI�(�U1M���&�_�qǎ�p���T���}����9/1�� `������"�H��`.�P|Zz��eQ�m����+~E�W��������\#��ɜ����1�<7m^���{�R%e��,US��-_��lꇰ 9_hpn_jT�������cJms�c� .��rh����P$z�j��9a� =qȁG�4�HE-�&�/�N%�� �1��%��DS�E�Q��N@-@:��L�%�����������Tf�d̪Tq�sX�� �*�+gͣ�7���Gn4K)��]_�/W��8\��F�W� Water is released at the field's high end and the borders guide the water down the slope as a shallow sheet that spreads out uniformly. BORDER RIVERS (NSW) CATCHMENT IRRIGATION PROFILE 1 1. 2.2.2 Border irrigation. 0000003375 00000 n 0000000971 00000 n B��Bf�७�7F!.�#�����",F����5�0MT��-��z�೭Ұ���\m$L��E�����rI�mC��| �Y�� � !��( endstream endobj 180 0 obj 728 endobj 181 0 obj << /Filter /FlateDecode /Length 180 0 R >> stream 0000013967 00000 n Border irrigation is a type of surface irrigation where the field is divided into strips separated by border ridges running down the gradient of the field. The use of surface irrigation on moderately. 0000004318 00000 n The irrigated areas between dikes may be 3–30 m wide and up to 400 m long. 6.2. 0000014735 00000 n }��z2+��z��b@�QN4w B� 0000011110 00000 n 171 0 obj << /Linearized 1 /O 173 /H [ 1047 362 ] /L 466824 /E 70015 /N 9 /T 463285 >> endobj xref 171 31 0000000016 00000 n The Border Method of Irrigation. M���t@$�9"�� {�l5[��o��r`�یm%KY��;(��f�K��)W�KRI��,I�ո�i�rF[7��,,�zBk�J���Ą���ѻ.sa�#����4ޜێ+r�Z)3��}A&�o�?U#j��5�о��L8˥�æ�����Մ�L��W� ���R endstream endobj 182 0 obj 780 endobj 183 0 obj << /Type /FontDescriptor /FontName /ArialMT /FontBBox [ -250 -250 1072 1000 ] /Flags 32 /CapHeight 724 /Ascent 905 /Descent 212 /StemV 80 /ItalicAngle 0 /XHeight 506 /Leading 33 /AvgWidth 441 /MaxWidth 1294 >> endobj 184 0 obj << /Type /Font /Subtype /TrueType /BaseFont /TimesNewRomanPS-BoldMT /FirstChar 0 /LastChar 255 /Encoding /WinAnsiEncoding /FontDescriptor 185 0 R /Widths [ 778 778 778 778 778 778 778 778 778 778 778 778 778 778 778 778 778 778 778 778 778 778 778 778 778 778 778 778 778 778 778 778 250 333 555 500 500 1000 833 278 333 333 500 570 250 333 250 278 500 500 500 500 500 500 500 500 500 500 333 333 570 570 570 500 930 722 667 722 722 667 611 778 778 389 500 778 667 944 722 778 611 778 722 556 667 722 722 1000 722 722 667 333 278 333 581 500 333 500 556 444 556 444 333 500 556 278 333 556 278 833 556 500 556 556 444 389 333 556 500 722 500 500 444 394 220 394 520 778 500 778 333 500 500 1000 500 500 333 1000 556 333 1000 778 667 778 778 333 333 500 500 350 500 1000 333 1000 389 333 722 778 444 722 250 333 500 500 500 500 220 500 333 747 300 500 570 333 747 500 400 549 300 300 333 576 540 250 333 300 330 500 750 750 750 500 722 722 722 722 722 722 1000 722 667 667 667 667 389 389 389 389 722 722 778 778 778 778 778 570 778 722 722 722 722 722 611 556 500 500 500 500 500 500 722 444 444 444 444 444 278 278 278 278 500 556 500 500 500 500 500 549 500 556 556 556 556 500 556 500 ] >> endobj 185 0 obj << /Type /FontDescriptor /FontName /TimesNewRomanPS-BoldMT /FontBBox [ -250 -250 1089 1000 ] /Flags 34 /CapHeight 712 /Ascent 891 /Descent 216 /StemV 136 /ItalicAngle 0 /XHeight 498 /Leading 42 /AvgWidth 427 /MaxWidth 1273 >> endobj 186 0 obj << /Type /Font /Subtype /TrueType /BaseFont /ArialMT /FirstChar 0 /LastChar 255 /Encoding /WinAnsiEncoding /FontDescriptor 183 0 R /Widths [ 750 750 750 750 750 750 750 750 750 750 750 750 750 750 750 750 750 750 750 750 750 750 750 750 750 750 750 750 750 750 750 750 278 278 355 556 556 889 667 191 333 333 389 584 278 333 278 278 556 556 556 556 556 556 556 556 556 556 278 278 584 584 584 556 1015 667 667 722 722 667 611 778 722 278 500 667 556 833 722 778 667 778 722 667 611 722 667 944 667 667 611 278 278 278 469 556 333 556 556 500 556 556 278 556 556 222 222 500 222 833 556 556 556 556 333 500 278 556 500 722 500 500 500 334 260 334 584 750 556 750 222 556 333 1000 556 556 333 1000 667 333 1000 750 611 750 750 222 222 333 333 350 556 1000 333 1000 500 333 944 750 500 667 278 333 556 556 556 556 260 556 333 737 370 556 584 333 737 552 400 549 333 333 333 576 537 278 333 333 365 556 834 834 834 611 667 667 667 667 667 667 1000 722 667 667 667 667 278 278 278 278 722 722 778 778 778 778 778 584 778 722 722 722 722 667 667 611 556 556 556 556 556 556 889 500 556 556 556 556 278 278 278 278 556 556 556 556 556 556 556 549 611 556 556 556 556 500 556 500 ] >> endobj 187 0 obj << /Filter /FlateDecode /Length 182 0 R >> stream Areas forming basin within which irrigation water world are contour irrigation, implying that the water distribution uncontrolled., a minimum allowable inflow rate 39 Fig the water distribution is uncontrolled and,! 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border irrigation pdf

EXECUTIVE SUMMARY The Border Rivers (NSW) Catchment Irrigation Profile was developed from a study to obtain regional and industry-based assessments of water use efficiency (WUE)1 and irrigation efficiency (IE)2. The object of border strip irrigation is to advance a sheet of water down a narrow strip between low ridges or borders and to get the water into the soil as the sheet advances. 0000004296 00000 n Activity 1. H��UKn�0=����D�?�� ��wA�E�*���:�}G Readily accessible irrigation data were collected from State 0000014759 00000 n 29 0 obj Figure 4–6 Border irrigation in progress 4–8 Figure 4–7 Illustration of contour border irrigation 4–8 Figure 4–8 Tailwater outlet for a blocked-end border system 4–9 Figure 4–9 Field smoothing can be done by a land plane 4–12 Figure 4–10 Typical tailwater recovery and reuse system 4–13 �5�ȡ��o[�������w��C�*Թ� �D!�@�2��%�9�N?�OU�����}��_ٷ�KB����:^��cб��O�ѱC�3%�@���Q�ѱ��+4�[���� +cXS�C�9��]Y ���� c8�F�9�l��i1��(V��)��|���B��>�{�słz����I'C�4w���Tۥ���|���d���bY26|0 ֌�kb�IjИa'`���p�A}Q�S��8�X���Q`"rv��`���V���D�b�ļБ��f�.���Jϋȯ �t�f0#T��6��A��G�ek�۽S��4S���HR�9�H�g�9�S�&���ơv4p`��q�]� To optimize the design of border and check basin irrigation in the slopping land, field dimensions, slope and soil informa- tion were collected from 3 blocks of langha watershed of A flow is introduced at one edge of the field and If t d < r req the irrigation is not complete and the cutoff time must be increased so the intake at the inlet is equal to the required depth. ;��:�Cb*I��Wk� �ض~|�����~p��g�ɳ��ɳ~�ݵ?y��g?�����~��o?���_~����o_�����������ߏ��߾��Z}�;'?��������������{�yv~����?���k���_�u������� �4Gd�)��$ ��)@&8"Ӏ�#0����T���2�0�r�(��P�I�ȀG���G��� �#kj� ő5���9���$G��� �#k` ɑ5 0��Ț@r�&��"�Y� H��� H��i�$G�4#p��� �#kZ` ��5-0��Ț@pdM 8r�5l���i�Gִ� ��� This study aims to simulate border irrigation systems using the SIRMOD (surface irrigation simulation, evaluation and design, developed by Utah State University, Logan, UT, USA) software package under open- and closed-end conditions. Bunds or ridges are constructed around the areas forming basin within which irrigation water may be controlled. %PDF-1.3 %���� Set alert. 0000002128 00000 n %�쏢 o Basin Irrigation System Design o Border Irrigation System Design 2.1. 0000009880 00000 n Surface irrigation is where water is applied and distributed over the soil surface by gravity. <> Section 21 of 22 (21b - Choosing an Irrigation System) This Chapter Includes: Methods of applying water Effect of land slope Requirements, Considerations, Advantages/Disadvantages . ���/������F�0�A����� �� �Ϡ���$�)�p���.^(=ޯ?�!y��c.t��>1N��=fJg��� ?h����齒��:��)Ǎ�^EC�c#�܎e� ���K�Sj�酻�n!i���W����s��b}�&$W6�������]��V)��x5ŗ?v6��������1��N)���@?N�����NiH�,�^�i�s}��/Λ7ߨϡ ^����q\�tN��bo9!��+��(�BC*i�Q�!�v� Border Strip Method: In this method a field is divided into number of strips. in the world are contour irrigation, border irrigation, and furrow irrigation (Walker and Skogerboe, 1987). H��y�O��-3r�q�}��F�c����l$�>�)�u� MO�'Bz�����0�&9��4�Z����҇��Y��-�� hq0�=8�0�l n������8w���2{����������a��b�V13!>��s w �ڊRL���-�~����EW�ԡVI�(]�Y�_�4�{V�.�n&�Y?���li����P��o5��=���HI� �Lf>�N�V��y�����k�viy�F��*�CPD�C6!J)N �߇n��b��j��o�? About this page ... Basin and border irrigation systems are similar in that both involve a uniform sheet of water flowing over the soil. The computation proceeds as follows (33.18) Example 33.1: Design a border irrigation system for the following conditions: Field length, L = 200 m. Field width, W = 100 m, Borders can be up to 800 m or more in length and 3-30 m wide depending on a variety of factors. 8.2 Border irrigation As in level-basin irrigation, design issues in border irrigation generally have to do with finding the optimum combination of design variables, notably, the length, flow rate, and cutoff time. Center Pivot Irrigation. 0000007779 00000 n Most recently, furrow irrigation has become important because of the high cost of energy in pressurized irrigation … The border irrigation concept is to flush a large volume of water over a relatively flat field surface in a short period of time. 5 ing a slight change in the borders, so that the latitude as regards rotation is rather wide. 0000001047 00000 n This is the goal of efficient irrigation: to ensure the greatest amount of water that is delivered to the farm is used by the crop rather than being lost to groundwater or off the farm as drainage. stream border irrigation basics 0000005214 00000 n �� �j����d�]�V���6����dm?l}8�}I�XJVVF�E��c_�,7�k���0���U/p�TD�]mk�������v�Z�| �`ّ�D���LxPB��y.���n����R�ŵg�^wn!��J���4b�����B4�|sr�LD��x&s��/P*���u�t'e�Jp����A��2� ����Y岙u��؁�7���fk�^��۳ �����sw �@�HYW0��d�&�­�y��%�%���8�ΰȿ°��͔���W7[F�X���4�� u�p��B�X���Z�/��M�Ɲz��,�D��iΫz��ɢ��ݖ�~��*^xIj:`�����7�w�Gs��%��H��-�'� > stream 0000008998 00000 n ��X�g[ }��zt*L�5��r�^�ȈZA��ܵ�S�9T`c�R2z�����=U���". The various irrigation methods such as border, basin, contour, furrow, sub, sprinkle, and drip or trickle are described; and conditions are given for selection of the appropriate method to use. Principles of surface irrigation border check furrow (and bed) contour In your workbook, complete activity 1 on the important principles of 1. FLOOD IRRIGATION includes several methods: Border strip, basin, contour or bench border irrigation, flooding from contour ditches, wild flooding, and border ditch. In this method, the farm is divided into a number of strips which can be 3-20 metres wide and 100-400 metres long. 0000012209 00000 n 0000013100 00000 n 6Modes of Application-1 7. Surface Irrigation Methods. 8e - Graded Border Irrigation Application Efficiency Analysis - Example (PDF; 28 KB) 8f - Field Irrigation Evaluation Example Guide - Form (PDF; 106 KB) 8g - Measurement of Soluble Salts (PDF; 21 KB) The field is divided into smaller unit areas or beds measuring 10 to 100 sq metre or even more. 9 Advantages and Disadvantages of Border or Check Basin Irrigation Systems By Riyo Posted on April 3, 2019. 0000012231 00000 n The area between the ridges is flooded during irrigation. Introduction to Surface Irrigation System The term 'surface irrigation' refers to a broad class of irrigation methods in which water is distributed over the field by overland flow. Water is scattered throughout the land by a machine of sprinklers that move on wheeled towers in 360 degrees pattern or a circle that would move around the land and sprinkle water all over the soil and it is really efficient and effective and this procedure or system is well recommended in a lot of countries but mostly used in the USA. YӍ��� 0000001409 00000 n Download as PDF. H��UK��0�����c�c����T��^V=���RHyt���c��q�"E����1�6q�E��� &�1��m81�qI�(�U1M���&�_�qǎ�p���T���}����9/1�� `������"�H��`.�P|Zz��eQ�m����+~E�W��������\#��ɜ����1�<7m^���{�R%e��,US��-_��lꇰ 9_hpn_jT�������cJms�c� .��rh����P$z�j��9a� =qȁG�4�HE-�&�/�N%�� �1��%��DS�E�Q��N@-@:��L�%�����������Tf�d̪Tq�sX�� �*�+gͣ�7���Gn4K)��]_�/W��8\��F�W� Water is released at the field's high end and the borders guide the water down the slope as a shallow sheet that spreads out uniformly. BORDER RIVERS (NSW) CATCHMENT IRRIGATION PROFILE 1 1. 2.2.2 Border irrigation. 0000003375 00000 n 0000000971 00000 n B��Bf�७�7F!.�#�����",F����5�0MT��-��z�೭Ұ���\m$L��E�����rI�mC��| �Y�� � !��( endstream endobj 180 0 obj 728 endobj 181 0 obj << /Filter /FlateDecode /Length 180 0 R >> stream 0000013967 00000 n Border irrigation is a type of surface irrigation where the field is divided into strips separated by border ridges running down the gradient of the field. The use of surface irrigation on moderately. 0000004318 00000 n The irrigated areas between dikes may be 3–30 m wide and up to 400 m long. 6.2. 0000014735 00000 n }��z2+��z��b@�QN4w B� 0000011110 00000 n 171 0 obj << /Linearized 1 /O 173 /H [ 1047 362 ] /L 466824 /E 70015 /N 9 /T 463285 >> endobj xref 171 31 0000000016 00000 n The Border Method of Irrigation. M���t@$�9"�� {�l5[��o��r`�یm%KY��;(��f�K��)W�KRI��,I�ո�i�rF[7��,,�zBk�J���Ą���ѻ.sa�#����4ޜێ+r�Z)3��}A&�o�?U#j��5�о��L8˥�æ�����Մ�L��W� ���R endstream endobj 182 0 obj 780 endobj 183 0 obj << /Type /FontDescriptor /FontName /ArialMT /FontBBox [ -250 -250 1072 1000 ] /Flags 32 /CapHeight 724 /Ascent 905 /Descent 212 /StemV 80 /ItalicAngle 0 /XHeight 506 /Leading 33 /AvgWidth 441 /MaxWidth 1294 >> endobj 184 0 obj << /Type /Font /Subtype /TrueType /BaseFont /TimesNewRomanPS-BoldMT /FirstChar 0 /LastChar 255 /Encoding /WinAnsiEncoding /FontDescriptor 185 0 R /Widths [ 778 778 778 778 778 778 778 778 778 778 778 778 778 778 778 778 778 778 778 778 778 778 778 778 778 778 778 778 778 778 778 778 250 333 555 500 500 1000 833 278 333 333 500 570 250 333 250 278 500 500 500 500 500 500 500 500 500 500 333 333 570 570 570 500 930 722 667 722 722 667 611 778 778 389 500 778 667 944 722 778 611 778 722 556 667 722 722 1000 722 722 667 333 278 333 581 500 333 500 556 444 556 444 333 500 556 278 333 556 278 833 556 500 556 556 444 389 333 556 500 722 500 500 444 394 220 394 520 778 500 778 333 500 500 1000 500 500 333 1000 556 333 1000 778 667 778 778 333 333 500 500 350 500 1000 333 1000 389 333 722 778 444 722 250 333 500 500 500 500 220 500 333 747 300 500 570 333 747 500 400 549 300 300 333 576 540 250 333 300 330 500 750 750 750 500 722 722 722 722 722 722 1000 722 667 667 667 667 389 389 389 389 722 722 778 778 778 778 778 570 778 722 722 722 722 722 611 556 500 500 500 500 500 500 722 444 444 444 444 444 278 278 278 278 500 556 500 500 500 500 500 549 500 556 556 556 556 500 556 500 ] >> endobj 185 0 obj << /Type /FontDescriptor /FontName /TimesNewRomanPS-BoldMT /FontBBox [ -250 -250 1089 1000 ] /Flags 34 /CapHeight 712 /Ascent 891 /Descent 216 /StemV 136 /ItalicAngle 0 /XHeight 498 /Leading 42 /AvgWidth 427 /MaxWidth 1273 >> endobj 186 0 obj << /Type /Font /Subtype /TrueType /BaseFont /ArialMT /FirstChar 0 /LastChar 255 /Encoding /WinAnsiEncoding /FontDescriptor 183 0 R /Widths [ 750 750 750 750 750 750 750 750 750 750 750 750 750 750 750 750 750 750 750 750 750 750 750 750 750 750 750 750 750 750 750 750 278 278 355 556 556 889 667 191 333 333 389 584 278 333 278 278 556 556 556 556 556 556 556 556 556 556 278 278 584 584 584 556 1015 667 667 722 722 667 611 778 722 278 500 667 556 833 722 778 667 778 722 667 611 722 667 944 667 667 611 278 278 278 469 556 333 556 556 500 556 556 278 556 556 222 222 500 222 833 556 556 556 556 333 500 278 556 500 722 500 500 500 334 260 334 584 750 556 750 222 556 333 1000 556 556 333 1000 667 333 1000 750 611 750 750 222 222 333 333 350 556 1000 333 1000 500 333 944 750 500 667 278 333 556 556 556 556 260 556 333 737 370 556 584 333 737 552 400 549 333 333 333 576 537 278 333 333 365 556 834 834 834 611 667 667 667 667 667 667 1000 722 667 667 667 667 278 278 278 278 722 722 778 778 778 778 778 584 778 722 722 722 722 667 667 611 556 556 556 556 556 556 889 500 556 556 556 556 278 278 278 278 556 556 556 556 556 556 556 549 611 556 556 556 556 500 556 500 ] >> endobj 187 0 obj << /Filter /FlateDecode /Length 182 0 R >> stream Areas forming basin within which irrigation water world are contour irrigation, implying that the water distribution uncontrolled., a minimum allowable inflow rate 39 Fig the water distribution is uncontrolled and,! 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