This article is part of the Woodleaf Farm Organic Systems Description.
Table 3. Mineral Mix Composition and Rate: Peaches, 2013–2015
On peaches, all ingredients are mixed with 300 gallons of water and applied from first bloom through petal fall using an air blast sprayer with constant mechanical agitation.
|Rate (per acre)|
|Micronized sulfur||S fertilizer, disease management||8 lb||10 lb||6 lb|
|Maxi-crop (dry kelp)||Micronutrient fertilizer, adhesion of ingredients||1.5 lb to second and third sprays||1 lb||1.5 lb|
|Gypsum (22% calcium, 16% sulfur)||Ca and S fertilizer, mechanical coating||6 lb||10 lb||6 lb|
|Azomite rock dust (hydrated sodium calcium aluminosilicate—11% alumina, more than 70 other minerals and trace elements)||Mechanical coating||5 lb||10 lb||5 lb|
|Ferrous sulfate||Fe fertilizer, pH adjustment (to reduce pH to 6.6–6.8)||5 lb||10 lb||5 lb|
|Sulfate of potash (50% potassium, 18% sulfur)||K and S fertilizer, mechanical coating||5 lb||6 lb||5 lb|
|Manganese sulfate (31% manganese)||Mn fertilizer (Woodleaf soils are low in Mn.)||5 lb||6 lb||5 lb|
|Solubor (boron)||B fertilizer (Woodleaf soils are low in B.)||1 lb||1.5–2 lb||1 lb|
|Nutramin rock dust (1% calcium, 2.5% iron, 2% sulfur, 30% SIO2)||Mechanical coating||2 lb||1.5 lb||2 lb|
|Activate (a humate)||Ingredient aggregator||1 lb||1 lb||1 lb|
|Therm X70, derived from yucca||Spreader sticker||4 oz||4 oz||4 oz|
¹One rain event occurred during bloom; three applications.
²Two rain events occurred during bloom; three applications with higher rates of sulfur. Some burning of peach foliage was observed, possibly due to higher Solubor rate.
³Weather was very dry; one application to three of five peach fields.
This table is part of the Woodleaf Farm Organic Systems Description.
Table of Contents:
- System Overview
- Soil Management System Description
- Insect Pest Management System Description
- Disease Management System Description