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Phosphorus Fertilizer Rate Effect on Alfalfa Yield and Soil Test P, Buckeye, 2014

10 pp. / Phosphorus is the primary fertilizer nutrient needed by alfalfa in Arizona. The objective of this study is to determine the effect of P fertilizer rate on alfalfa yield and soil test P. A phosphorus fertilizer rate study was conducted with alfalfa in Buckeye, AZ where 11-52-0 was applied at 0, 200, 400, and 800 lb fertilizer/acre in February, 2014 after the first cutting. Alfalfa hay yield was increased by phosphorus fertilizer application up to the cutting on July 30, but not thereafter. No differences in yield were found among the fertilizer rates of 200,400, and 800 lb 11-52-0/acre. Soil test phosphorus increased directly proportional to fertilizer rate, but eventually decreased close to deficient levels 3-5 months after fertilizer application. It is not known if additional fertilizer applications throughout the season would increase yield. Fertilizer rates higher than 200 lb 11-52-0/acre were not beneficial under the conditions of this study.

Identiferoai:union.ndltd.org:arizona.edu/oai:arizona.openrepository.com:10150/560411
Date06 1900
CreatorsOttman, Mike, Rovey, Jason, Mostafa, Ayman, Burayu, Worku
ContributorsUniversity of Arizona, College of Agriculture and Life Sciences, Rovey Farming Company, Maricopa County Cooperative Extension
PublisherCollege of Agriculture, University of Arizona (Tucson, AZ)
Source SetsUniversity of Arizona
Languageen_US
Detected LanguageEnglish
Typetext, Book
SourceCALS Publications Archive. The University of Arizona.
RelationUniversity of Arizona Cooperative Extension Service and Agricultural Experiment Station Bulletin AZ1672-2015

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