Post by jabber1 on Jan 21, 2012 7:41:38 GMT -5
The majority in this area would use the products that you listed for most of their N, P, and K.
Our land grant university- Univ of Illinois- most typically suggests that a pound of actual N, P, or K is a pound no matter what the source.
They do suggest that we need to consider or try sulfur but results have been variable with many locations not responsive.
The N is annhydrous ammonia= AA= 82-0-0= NH3 is held more tightly by the soil for more days after application and less subject to loss for those days. NH3 applied to the soil ends up being NH4+ as it attaches to free hydrogen in the soil. As a positive charged ion it is held by the negative charge of the soil until is converts to nitrate N. There are all sorts of disadvantages to using NH3= 82-0-0 also.
Caution- soils vary widely in natural properties, manure history, and past applications by farm operators. For recommendations that have some research to back them look to your local land grant universities for some help. They don't have all of the answers but they do have to have some data to back up their positions. Local crop consultants and soil labs that you trust can also provide some guidance for your soils but they often are short data to back up their suggestions or recommendations. As one presenter at a fertilizer seminar stated, "in God we trust. For all others- show us your data."
Good question. I will watch to see what others have to say.
Our land grant university- Univ of Illinois- most typically suggests that a pound of actual N, P, or K is a pound no matter what the source.
They do suggest that we need to consider or try sulfur but results have been variable with many locations not responsive.
The N is annhydrous ammonia= AA= 82-0-0= NH3 is held more tightly by the soil for more days after application and less subject to loss for those days. NH3 applied to the soil ends up being NH4+ as it attaches to free hydrogen in the soil. As a positive charged ion it is held by the negative charge of the soil until is converts to nitrate N. There are all sorts of disadvantages to using NH3= 82-0-0 also.
Caution- soils vary widely in natural properties, manure history, and past applications by farm operators. For recommendations that have some research to back them look to your local land grant universities for some help. They don't have all of the answers but they do have to have some data to back up their positions. Local crop consultants and soil labs that you trust can also provide some guidance for your soils but they often are short data to back up their suggestions or recommendations. As one presenter at a fertilizer seminar stated, "in God we trust. For all others- show us your data."
Good question. I will watch to see what others have to say.
Cobs so big , only 3 fit in a coaster wagon??? Just wondering !!!!