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Rivers, MB | Andrew,
Here's my thoughts on Alpine fert (phosphate). It gives you more usable P in the year of application than using 11-52-0 or 10-34-0. I'm told that with 11-52-0, you can get up to 30% (assuming nice warm, moist soil conditions at time of seeding) of the amount you apply in the year of application. Therefore, if you put down 30lb of actual P down, you will have up to 9lb/ac available in the first year. The remaining P needs to come from the soil. I'm told that Alpine will give you more than 30% in that first year. That makes it nice in an application where you have taken on new ground that has very low P levels in the soil. HOWEVER, if your annual crop requirements for Phosphate are 30-40lb/ac of actual P, you cannot only put down 20lb/ac (of actual P) with Alpine and expect to not mine your soil. If you take out 30-40lb/ac every year, you have to replace that with 30-40 lb/ac of P every year to maintain (let alone buildup) your soil fertility levels. Kind of like a bank account. If you have an account with $100 in it, you can't take out $10/month and only deposit $5/month and expect the account to have $100 in after 10 years. | |
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Alpine Fertilizer
