II WORKSHOP INTERNACIONAL: GESTÃO SUSTENTÁVEL DE RECURSOS HÍDRICOS NA AGRICULTURA IRRIGADA: Pesquisa, Políticas Públicas, Extensão Rural e Participação dos Agricultores do Nebraska, USA e do Oeste da Bahia, Brasil AUDITÓRIO AIBA - BARREIRAS, BA

1. InternationalWorkshoponSustainableWaterResource
ManagementforIrrigatedAgriculture
March1,2018
Irrigacao e Extensao Rural no
Nebraska
Daran R. Rudnick, Ph.D.
AssistantProfessor:IrrigationSpecialist
DepartmentofBiologicalSystemsEngineering
WestCentralResearchandExtension Center
UniversityofNebraska-Lincoln
Phone:(308)696-6709,Email:
daran.rudnick@unl.edu

2. O que e Extensao Rural?
“Extension provides non-formal education and learning activities to people
throughout the country – to farmers and other residents of rural communities
as well as to people living in urban areas. It emphasizes taking knowledge
gained through research and education and bringing it directly to the people to
create positive changes.” USDA-NIFA
Extension can provide the agricultural community with guidelines to optimize
their operation to make better informed decisions for enhancing productivity
while being environmental stewards.
The U.S. has over 100 land-grant colleges and universities with Extension.

3. Extensao Rural da Universidade de Nebraska-Lincoln

4. Irrigacaopor Gravidade

5. Tow Line Solid Set(1955)

6. Pivo Central(1969)

7. Pivo Central(1960’s)

8. Irrigacao VRI em Big Springs, NE
Span 1 - 6: On
Span 7-8: Off
Primary Valve
Secondary Valves
Smallest Zone
1ᵒ Change
Span Control
Controller

9. Atividades de Extensao
• Publicacoes
• Dias de Campo
• Programas de Extensao
• Workshops
• Parcerias

10. Daran Rudnick, Chuck Burr, Matt Stockton,and RodrigoWerle
WestCentralResearchandExtensionCenter
InPartnership with
Nebraska WaterBalanceAlliance(NEWBA) - Aquamart

11. Sponsors

12. Participantes

13. Descricao do Campo
• West Central Research and
Extension Center (WCREC) in
North Platte, NE
• Competition Design
• 15 “Farms”
• Soil Type
• Cozad Silt Loam
• Climate
• Semi-Arid
• Seasonal Rainfall
• 13.8 inches

14. Descricao do Projeto
• Each “Farm” on paper included 3,000 harvested acres for the purposes of
making decisions, but were imposed on 3 randomized plots (~0.4 acres) held
under a variable rate irrigation (VRI) pivot at WCREC in North Platte, NE.
• As decisoes gerenciais incluem:
• Selecao do seguro
• Manejo adubacao nitrogenada
• Selecao do hibrido
• Densidade de plantio
• Gestao da irrigacao
• Comercializacao de graos
Real-time decisions are logged on TAPS.unl.edu

15. Exemplo: Gestao da Irrigacao

16. Quais Informacoes sao Coletadas?
Data has been generated on:
• Soil, plant, and atmospheric conditions
----------- Evaporative Demand -----------
--- Plant Sensing ---
----------- Soil Properties -------------- Soil Water ---
--- Residue ---
--- Field Scouting ---
----------- Imagery -----------

17. Umidade do Solo

18. Imagem satellite, tempo e manejo da cultura

19. Imagem visual, termica e reflectancia
• Imagery Dates
• April 22nd
• May 21st
• June 11th
• June 26th
• July 10th
• July 19th
• July 27th
• August 4th
• August 11th
• August 19th
• September 2nd
• September 12th
July 10th, 2017

20. Estadios de crescimentos & diferencas visuais
Agosto 9th – Milk (R3)
Fazenda 1 Fazenda 2 Fazenda 3 Fazenda 4 Fazenda 5 Fazenda 6 Fazenda 7
Fazenda 8 Fazenda 9 Fazenda 10 Fazenda 11 Fazenda 12 Fazenda 13 Fazenda 14 Fazenda 15
Agosto 9th, 2017

21. Comparacao de espigas

22. Resultados das
Fazendas

23. Produtividade do milho
13 10 91156851114321247
Produtividade (Mg/ha)
11.1
13.2
14.4
1 Mg = 1,000 kg
14.6
15.0 15.0
15.4 15.4 15.4 15.5 15.5
15.7
16.2
16.4 16.4

24. Eficiencia do uso de insumos
𝐼𝑛𝑝𝑢𝑡 𝑈𝑠𝑒 𝐸𝑓𝑓𝑖𝑐𝑖𝑒𝑛𝑐𝑦 = 𝑅𝑎𝑛𝑘
𝐼𝑟𝑟𝑖𝑔𝑎𝑡𝑖𝑜𝑛
𝑇𝑒𝑟𝑚
+ 𝑅𝑎𝑛𝑘
𝑁𝑖𝑡𝑟𝑜𝑔𝑒𝑛
𝑇𝑒𝑟𝑚
+ 𝑅𝑎𝑛𝑘
𝑌𝑖𝑒𝑙𝑑
𝑇𝑒𝑟𝑚
𝐼𝑛𝑝𝑢𝑡 𝑈𝑠𝑒 𝐸𝑓𝑓𝑖𝑐𝑖𝑒𝑛𝑐𝑦 = 𝑅𝑎𝑛𝑘
𝐸𝑇𝐹𝑎𝑟𝑚 − 𝐸𝑇𝐶
𝐼𝑟𝑟𝑖𝑔𝑎𝑡𝑖𝑜𝑛 𝐹𝑎𝑟𝑚
+ 𝑅𝑎𝑛𝑘
𝐺𝑁𝑈 𝐹𝑎𝑟𝑚 − 𝐺𝑁𝑈 𝐶
𝑁𝑖𝑡𝑟𝑜𝑔𝑒𝑛 𝐴𝑝𝑝𝑙𝑖𝑒𝑑 𝐹𝑎𝑟𝑚
+ 𝑅𝑎𝑛𝑘
𝑌𝑖𝑒𝑙𝑑 𝐹𝑎𝑟𝑚
𝑌𝑖𝑒𝑙𝑑 𝐶

25. Lucratividade
89225 178 113 64 173 0 225
222 273 174 192 135 229 119
Irrigation (mm)
1 Hectare = 2.47 Acres
3.25 Reis = 1 U.S. Dollar
U.S. $146.85 per ac = Reis $1,179 per ha
U.S. -$153.29 per ac = Reis -$1,231 per ha

26. Uso x Suprimento de Agua
May 9 – Sept. 22, 2017
ET = 622 mm
Rain = 351 mm
Uso de Agua pela Cultura
Precipitacao

27. Uso x Suprimento de Agua
Irrigacao
Farm 1: 89 mm
Farm 10: 173 mm
Farm 15: 273 mm
Precipitacao
+ Irrigacao

28. Suprimento de Agua
Farm 10
Farm 1
Farm 15
AvailableMoisture
0
100
Irrigacao
Farm 1: 89 mm
Farm 10: 173 mm
Farm 15: 273 mm

29. Premio de maior eficiente no uso de insumos
Farm # 10
Tim Schmeeckle of Gothenburg, NE
Cash Award: $1,000
Hybrid: Dyna-Grow D53VC55RIB
Seeding Rate: 34,000 plants/acre
Irrigation: 6.80 inches
Nitrogen: 165 lbs/acre
Yield: 260.7 bushels/acre
ETUE: 1.04; GNUE: 0.42; Yratio: 1.47

30. Thank You!
Some results presented in this study are based upon work that was partly supported
by the National Institute of Food and Agriculture, U.S. Department of Agriculture
(USDA-NIFA) under award numbers 2016-68007-25066 and 2016-68008-25078.