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Mengel, D

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Mengel, D

Hawkins, S

Tucker, D

Mengel, D

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Type

Oral

Year

1994

2006

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1. Fertilizer Recommendations- Fact or Fiction Fertilizers are all important and expensive part of the crop production systenl in Indiana. Indiana farmers spend nearly a half billion dollars each year on fertilizer and lime. The question is. is this expense really nccessary? Farmers obtain fertilizer reconlmendations from a number of sources. Soil testing labs. fertilizer dealers. crop consultants and extension all make fertilizer reconunendations. In many cases the reconlmendations are quite different. Is there a valid reason for these differences... Download paper
2. A Different Approach to Managing Nitrogen in Sorghum Research conducted over the past fifty plus years has been used to develop a Nitrogen Fertilizer Recommendation "formula" for grain sorghum which considers factors such as Yield Potential, Residual Nitrate N in the soil Profile, the amount of N mineralized fi-om Soil Organic Matter and Previous Crop Residue, and other potential sources of N such as animal manure or N in irrigation water. The current formula used is as follows: N Rec = Yld x (1.6) - (20 x %SOM) - PNST - PCA - Manure N - Water N When... Download paper

Filter results2 paper(s) found.

1. Fertilizer Recommendations- Fact or Fiction

Fertilizers are all important and expensive part of the crop production systenl in Indiana. Indiana farmers spend nearly a half billion dollars each year on fertilizer and lime. The question is. is this expense really nccessary? Farmers obtain fertilizer reconlmendations from a number of sources. Soil testing labs. fertilizer dealers. crop consultants and extension all make fertilizer reconunendations. In many cases the reconlmendations are quite different. Is there a valid reason for these differences...

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2. A Different Approach to Managing Nitrogen in Sorghum

Research conducted over the past fifty plus years has been used to develop a Nitrogen Fertilizer Recommendation "formula" for grain sorghum which considers factors such as Yield Potential, Residual Nitrate N in the soil Profile, the amount of N mineralized fi-om Soil Organic Matter and Previous Crop Residue, and other potential sources of N such as animal manure or N in irrigation water. The current formula used is as follows: N Rec = Yld x (1.6) - (20 x %SOM) - PNST - PCA - Manure N - Water N When...

Download paper