1. Irrigation Method Impacts on Peanut Pod Yield. S. Leininger 1, L. J
Irrigation Method Impacts on Peanut Pod Yield. S. Leininger 1, L.J. Krutz1, J. Sarver2, A. Henn2 and J. Gore1 (1) Mississippi State University – Delta Research and Extension Center (2) Mississippi State University – Dept. Plant and Soil Sciences

2. RISER
Introduction

3. Irrigation Application Timing
RISER
total inches received from beginning of April until the end of September

4. Plant Available Water
RISER
50%
MAD

5. Irrigation Application Timing
RISER
Moisture by Depth
Active Rooting Zone
Infiltration Depth
total inches received from beginning of April until the end of September

6. RISER Introduction 6-in 12-in 18-in Place sensors on edge of bed
Weighted Average (0.33*cbar *cbar *cbar)
Place sensors on edge of bed
Opposite of traffic middle
Next to representative plants of overall stand

7. RISER Materials and Methods Objectives
–Evaluate irrigation scheduling methods that optimize peanut yield, quality, water use efficiency and profitability in furrow irrigated environments.
total inches received from beginning of April until the end of September

8. RISER Materials and Methods Studies conducted in Stoneville, MS
Field Preparation
- Formed 40-in beds
Bosket sandy loam (sealing soil texture)
total inches received from beginning of April until the end of September

9. RISER Materials and Methods
total inches received from beginning of April until the end of September

10. RISER Materials and Methods Cultivar: Georgia-06G
Planting dates: and
Plant Spacing: 7 seed/ft-1
Planting depth: 2-in
Irrigated Every Furrow
total inches received from beginning of April until the end of September

11. RISER Materials and Methods 5 treatments
(-100cbar, -75cbar, -50cbar, FAO-56 and NI)
26.66-ft wide x 30-ft long plot
total inches received from beginning of April until the end of September

12. RISER Materials and Methods Parameters measured
-Southern Blight Infection
-Grade (Quality)
-Oleic Acid (Quality)
-Yield
-Water Use Efficiency
-Net Return (Profitability)
total inches received from beginning of April until the end of September

13. Total Inches of Rainfall for Stoneville, MS by Month in 2015
Introduction
RISER
Total Inches of Rainfall for Stoneville, MS by Month in 2015
April
6.33
May
6.96
June
2.57
July
3.17
August
0.73
September
0.79
total inches of rainfall received from beginning of April until the end of September

14. Total Inches of Rainfall for Stoneville, MS by Month in 2016
Introduction
RISER
Total Inches of Rainfall for Stoneville, MS by Month in 2016
April
4.31
May
3.26
June
5.06
July
6.53
August
5.48
September
0.07
total inches received from beginning of April until the end of September

15. Southern Blight Results
RISER NS
Fear that over-irrigating would “flare” southern blight disease pressure

16. Quality Results
RISER
Fear that over-irrigating would negatively effect quality Total Sound Mature Kernels (TSMK)

17. Quality Results
RISER
Fear that over-irrigating would negatively effect quality

18. RISER Yield Results 2015 A AB BC C
-100cbar=8228 lbs/ac -75cbar=8014 lbs/ac -50cbar=8555 lbs/ac FAO-56=7591 lbs/ac NI=7279 lbs/ac

19. Water Use Efficiency Results 2015
RISER A AB B
WUE=amount of yield gained for amount of irrigation water applied above NI yield

20. Net Return Results 2015
RISER A
$971.40 B
$884.24 AB
$928.44
$862.63

21. Yield Results 2016
RISER B A
-100cbar=8228 lbs/ac -75cbar=8014 lbs/ac -50cbar=8555 lbs/ac FAO-56=7591 lbs/ac NI=7279 lbs/ac

22. Water Use Efficiency Results 2016
RISER NS

23. Net Return Results 2016
RISER B
$585.81 A
$697.97
$569.00

24. RISER Conclusion Furrow irrigation did not increase disease pressure
Sensor based scheduling did not adversely affect peanut quality or yield
Sensor based scheduling superior to atmospheric modeling

25. Conclusion
RISER
Goal is to balance yield, water use efficiency and profitability
Schedule irrigations with soil moisture sensor
50cb threshold should be utilized season long

26. RISER RISER Thank You Graduate Committee Members
MS Peanut Promotion Board
DREC Community
DREC Irrigation Team
Starkville Peanut Agronomics Team
Eurofins Analytical Laboratories
RISER

27. RISER
Questions?