Sorghum Irrigation Management Evaluations

Transcription

1 Sorghum igation Management Evaluations Bob Hutmacher, Steve Wright, Jeff Dahlberg, Mark Keeley, Gerardo Banuelos, Raul Delgado, Julie Sievert UC Davis Plant Sci. Dept. & UCCE Tulare and Kings Counties, UC Kearney Agric. REC Nancy Loza, Jamie Changala, Katie Wilson, Garrett Baker UCCE Tulare Co. UC West Side REC Staff and UC Kearney REC staff Todd Fernandez, College of Sequoias Tulare Farm

2 Furrow irrigated studies in at COS Farm Furrow-irrigated WSREC and KAREC sites in 212 Expanded trials at REC s started in 213

3 Planting / Soil Characteristics / igation Method Tulare COS Farm 29 and 21 Silage sorghum studies Soil Type Row Spacing Plot width / length ig X Variety split Tagus loam soil, Tulare-area College of Sequoias farm 3 inch rows 16 beds in width per irrigation treatment replication Approximately 125 feet plot length, 3 field reps 16 beds are split plot, with two varieties per irrigation rep Depth range in soil profile (ft) Available Soil Water held Per foot of soil profile (inches) igation Method 1 inch gated pipe, one gate per planted row Border ridge separates reps each end of plots Plots irrigated individually so water application amounts could be determined Typical amount / applic. = 4.5 to 5.5 inches

4 Planting / Soil Characteristics / igation Method West Side and Kearney REC 212 Silage sorghum studies Soil Types WSREC (clay loam soil); Kearney REC (sandy loam soil) Row Spacing Plot width / length ig X Variety split Depth range in soil profile (ft) 3 inch rows 8 beds in width per irrigation treatment replication Approximately 65 feet plot length, 4 field reps two varieties by 8 rows per irrigation rep Available Soil Water held Per foot of soil profile (inches) West Side REC Kearney REC igation Method 6 inch gated pipe, one gate per planted row Border ridge separates reps each end of plots Plots irrigated individually so water application amounts could be determined Typical amount / applic. = 2. to 2.6 (KAREC) and 3.5 to 5. inches (WSREC)

5 igation Dates and Amounts Tulare COS Farm 29 and 21 Silage sorghum studies ig. Treatment # 29 igation Dates and Amounts (inches water) Planted 6/25 Preplant irrigation of 7 inches 21 igation Dates and Amounts (inches water) Planted 8/4 Preplant irrigation of 8 inches Date 7/29 8/18 9/1 Total 9/2 9/24 1/18 Total Days after planting T T T T

6 igation Dates and Amounts WSREC and KAREC 212 Silage sorghum studies ig. Treatment # 212 Kearney KAREC igation Dates and Amounts (inches water) - Planted 6/22 - Two pre-irrigations to apply total of 6.5 to 7 inches Date 7/6 7/23 8/2 8/1 8/2 8/3 9/1 9/19 Total T T T T Soil conditions not suited to a nonirrigated treatment for T- treatment

7 igation Dates and Amounts WSREC and KAREC 212 Silage sorghum studies ig. Treat - ment # 212 West Side REC igation Dates and Amounts (inches water) - Planted 6/23 - Large pre-plant irrigation (8-9 inches) Date 6/26 7/1 7/23 7/29 8/2 8/3 9/1 9/19 Total T T T T Soil conditions not suited to a nonirrigated treatment for T- treatment

8 Sorghum Applied igation plus Soil Water Use 29 COS site (inches applied or soil water use) Eto Soil Water 1-Sep 18-Aug Jul T1 T2 T3 T Potential ET

9 Plant Ht (in) and Grain Head as % of total fresh weight Ht -Forage Type 15 % - Forage Type 4 Ht - Grain Type 1 % - Grain Type 2 5 ig 1 ig 2 ig 3 ig ig 1 ig 2 ig 3 ig

10 Sorghum Applied igation plus Soil Water Use 21 COS site (inches applied or soil water use) T1 T2 T3 T Potential ET Eto Rain Soil Water 18-Oct 24-Sep 2-Sep

11 Degree days accumulated 29 versus 21 Year Location and Type weather data 29 Porterville CIMIS 29 June planted Portable on site 21 Porterville CIMIS 21 August planted Portable-on site Degree Days (DD6) (heat units, single triangle method, base 6F) Days after planting (DAP) 3 days 6 days 9 days At harvest (12 DAP 29; 18 DAP 21)

12 Leaf Water Potential (Bars) College of Sequoias Farm - 29 igation Trial -.8 Days After Planting T1, T2 T1,T2,T3 T1, T T1 T2 T3 T

13 Sorghum Calculated Evapotranspiration 29 COS site (inches applied or soil water use) - loam soil Year Type of Sorghum igation Trt # In- Season Applied Water (inches) Soil Water Use (in) 29 Grain Sorghum Forage Sorghum Total Est. Etc (in)

14 Sorghum Calculated Evapotranspiration 21 COS site (inches applied or soil water use) - loam soil Year Type of Sorghum igation Trt # In- Season Applied Water (inches) Soil Water Use (in) 21 Grain Sorghum Forage Sorghum Total Est. Etc (in)

15 Sorghum Calculated Evapotranspiration 212 Kearney REC site (inches applied or soil water use) - sandy loam soil Year Type of Sorghum igation Trt # In- Season Applied Water (inches) Soil Water Use (in) 212 Grain Sorghum Forage Sorghum Total Est. Etc (in)

16 Sorghum Calculated Evapotranspiration 212 West Side REC site (inches applied or soil water use) - sandy loam soil Year Type of Sorghum igation Trt # In- Season Applied Water (inches) Soil Water Use (in) 212 Grain Sorghum Forage Sorghum Total Est. Etc (in)

17 HARVEST OPERATIONS 1) At COS site = Commercial Silage Harvest equipment & whole plot weights 2) At REC sites = hand harvest Subsamples by hand for moisture %

18 Sorghum Silage Yields and Average Moisture Content 29 COS site Yields (Tons/acre) T1 T2 T3 T Var A (FS 52) Var B (GS 9) Silage Moisture Content (%) T1 T2 T3 T Var A (FS 52) Var B (GS 9)

19 Sorghum Silage Yields and Average Moisture Content 21 COS site Yields (Tons/acre) T1 August planting date T2 T3 T Var A (FS 52) Var B (GS 9) Silage Moisture Content (%) T1 T2 T3 T Var A (FS 52) Var B (GS 9)

20 Sorghum Silage Yields and Average Moisture Content 212 West Side REC site Yields (Tons/acre) T1 T2 T3 T Var G (AG211) Var F (SiloKing) Silage Moisture Content (%) T1 T2 T3 T Var G (AG211) Var F (SiloKing)

21 Sorghum Silage Yields and Average Moisture Content 212 Kearney REC site Yields (Tons/acre) T1 T2 T3 T Var G (AG211) Var F (SiloKing) Silage Moisture Content (%) T1 T2 T3 T Var G (AG211) Var F (SiloKing)

22 FORAGE SORGHUM Yields and Average Moisture Content 213 Kearney REC site Yields (Tons/acre) Silage Moisture Content (%) A5642 A5652 NK 3 A5642 a5652 NK Trudan8 AF Trudan8 AF T1 T2 T3 T4 T5 T1 T2 T3 T4 T5

23 FORAGE SORGHUM Yields and Average Moisture Content 213 West Side REC site Yields (Tons/acre) Silage Moisture Content (%) A5642 A5652 NK 3 A5642 a5652 NK Trudan8 AF Trudan8 AF T1 T2 T3 T4 T5 T1 T2 T3 T4 T5

24 Sorghum Silage Yields per Unit Crop Etc 29 & 21 COS site (Tons/acre per inch of water) Var A (FS 52) Var B (GS 9) Var A (FS 52) Var B (GS 9).2.2 T1 T2 T3 T T1 T2 T3 T

25 Silage Quality Summary selected analyses 21 Variety ig Trt # Dry Matter (%) Crude Protein (% DM) Soluble Protein (% CP) Acid Deterg Fiber (% DM) Neutral Deterg Fiber (% DM) TDN (% DM) FS-52 T T T T GS 9 T T T T average

26 Research Efforts in sorghum irrigation trials will continue in 214 and 215 THANK YOU FOR YOUR INTEREST IN UNIVERSITY OF CALIFORNIA RESEARCH PROGRAMS