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The Mechanism of Ammonium Phosphate Injury to Seeds
Author(s) -
Ensminger L. E.,
Hood J. T.,
Willis G. H.
Publication year - 1965
Publication title -
soil science society of america journal
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.836
H-Index - 168
eISSN - 1435-0661
pISSN - 0361-5995
DOI - 10.2136/sssaj1965.03615995002900030027x
Subject(s) - germination , salt (chemistry) , diammonium phosphate , ammonium , phosphate , ammonium phosphate , chemistry , agronomy , salt solution , horticulture , potassium , biology , biochemistry , fertilizer , organic chemistry
Cotton and wheat seeds were soaked in various salt solutions (including ammonium phosphates). The seeds were then allowed to germinate. With increasing salt concentration, the germination of cotton did not decrease, whereas the germination of wheat decreased in most cases. Soaking cotton seeds in 0.25 m (NH 4 ) 2 SO 4 solutions adjusted to pH levels between 7.2 and 9.0 showed germination injury above pH 7.8. The harmful effect of diammonium phosphate treatment was largely alleviated by subsequent soaking of seeds in dilute solutions of MgSO 4 . Germination injury from (NH 4 ) 2 HPO 4 appeared to be largely due to the inactivation of Mg in seeds.