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Copy link Almond Polysulphate Standard Trial on Sandy Loam
4.8
Yield increase
Fall-applied Polysulphate increased almond kernel yields
Parlier, California, USA
4.8
Key Conclusions
Polysulphate Standard 750-1071 lb/acre fall applied to orchard floor tree lines effectively increased kernel yields.
- Polysulphate Standard in the spring had lower yield, but the same rate of 1071 lb/a fall applied showed a 4.6% kernel yield increase over the GSP.
- An increase of 4.8% over the GSP was achieved with 750 lb/a fall applied Polysulphate Standard+38 lb/a MAP+90 lb/a SOP
- Soil electrical conductivity, sodium, nitrate, phosphate at the end of the season were lower with Polysulphate compared to GSP – influencing better soil quality and NUE (nutrient use efficiency).
Objective
To evaluate the performance of Polysulphate Standard, spring or fall applied, compared to the grower standard practice on almond in California.
Trial Details
Trial station
Parlier, California, USA
Product
Polysulphate®
Assessments
Yield, Tissue and Soil Analysis
Treatments
- Grower Standard Practice, Spring Applied, 0 lb/acre
- Polysulphate Standard + MAP, Spring Applied, 1071 lb/acre + 38 lb/acre
- Polysulphate Standard + MAP, Fall Applied, 1071 lb/acre + 38 lb/acre
- Polysulphate Standard + SOP + MAP, Fall Applied, 750 lb/acre + 90 lb/acre + 38 lb/acre
- Polysulphate side discharge broadcast spreading along the treeline
Treatments
- Grower Standard Practice, Spring Applied, 0 lb/acre
- Polysulphate Standard + MAP, Spring Applied, 1071 lb/acre + 38 lb/acre
- Polysulphate Standard + MAP, Fall Applied, 1071 lb/acre + 38 lb/acre
- Polysulphate Standard + SOP + MAP, Fall Applied, 750 lb/acre + 90 lb/acre + 38 lb/acre
- Polysulphate side discharge broadcast spreading along the treeline
Results
Polysulphate on Almonds
Parlier, California, USA
4.8
Yield increase
Polysulphate on Almonds
Sanger, California, USA
11
Yield increase
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