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□ Monopotassium phosphate (MKP) is a potential option for fertigating phosphorus (P) in potato (Solanum tuberosum L.) when petioles are low in P and high in nitrogen (N); which is a situation where using ammonium polyphosphate (APP) could potentially result in excessive N application. Fertilizer trials were conducted in 2004-2006 with 0 or 56 kg P2O5 ha-1 fertigated as either APP or MKP as a supplement to the pre-plant P (112 or 224 kg P2O5 ha-1) broadcast applied to all plots. Supplemental P fertigation increased petiole P concentration, US No. 1 yield, and total yield over the control not receiving any in-season P fertilizer regardless of source. In addition, MKP increased tuber specific gravity. These results support previous studies showing that fertigated P can be used to increase potato yields when petiole P concentrations are low and that MKP is a viable substitute for APP fertilizer when fertigation is necessary.

Titel:	MONOPOTASSIUM PHOSPHATE AS AN IN-SEASON FERTIGATION OPTION FOR POTATO
Autor/in / Beteiligte Person:	HOPKINS, Bryan G ; ELLSWORTH, Jason W ; SHIFFLER, Amanda K ; COOK, Aaron G ; BOWEN, Thomas R
Link:	View record from PASCAL Archive
Zeitschrift:	Journal of plant nutrition, Jg. 33 (2010), Heft 9-11, S. 1422-1434
Veröffentlichung:	Philadelphia, NJ: Taylor & Francis, 2010
Medientyp:	academicJournal
Umfang:	print, 1 p.1/4
ISSN:	0190-4167 (print)
Schlagwort:	Agronomy, agriculture, phytopathology Agronomie, agriculture, phytopathologie Plant biology and physiology Biologie et physiologie végétales Sciences biologiques et medicales Biological and medical sciences Sciences biologiques fondamentales et appliquees. Psychologie Fundamental and applied biological sciences. Psychology Physiologie vegetale et developpement Plant physiology and development Métabolisme Metabolism Métabolisme général. Besoins physicochimiques Metabolism. Physicochemical requirements Agronomie. Sciences du sol et productions vegetales Agronomy. Soil science and plant productions Agronomie générale. Phytotechnie General agronomy. Plant production Relations sol-plante. Fertilité des sols. Fertilisation. Amendement Soil-plant relationships. Soil fertility. Fertilization. Amendments Fertilisations azotée, phosphorée, potassique Nitrogen, phosphorus, potassium fertilizations Physiologie des plantes d'intérêt économique Economic plant physiology Nutrition. Photosynthèse. Respiration. Métabolisme Nutrition. Photosynthesis. Respiration. Metabolism Angiospermae Dicotyledones Elément groupe VA Group VA element Elemento grupo VA Engrais composé Compound fertilizer Abono compuesto Légume Vegetables Hortalizas Métal alcalin Alkali metal Metal alcalino Non métal Non metal No metal Plante à tubercule Tuber plant Planta con tubérculo Solanaceae Spermatophyta Type C3 C3-Type Tipo C3 Végétal Vegetals Vegetal Azote Nitrogen Nitrógeno Engrais PK PK fertilizer Abono PK Irrigation fertilisante Fertigation Riego fertilizante Phosphore Phosphorus Fósforo Pomme de terre Potato Patata Potassium Dihydrogénophosphate Potassium Dihydrogenphosphates Potasio Dihidrogenofosfato Potassium Potasio Saison Season Estación Solanum tuberosum Nutrition des plantes Plant nutrition Nutrición de las plantas Plante en C3 MKP fertigation fertilizers general plant nutrition monopotassium phosphate nitrogen phosphorus potassium potato
Sonstiges:	Nachgewiesen in: PASCAL Archive Sprachen: English Original Material: INIST-CNRS Document Type: Article File Description: text Language: English Author Affiliations: Plant and Wildlife Sciences, Brigham Young University, Provo, Utah, United States ; Wilbur-Ellis Co., Kennewick, Washington, United States ; Department, of Plant, Soil and Entomological Sciences, University of Idaho, Idaho Falls, Idaho, United States Rights: Copyright 2015 INIST-CNRS ; CC BY 4.0 ; Sauf mention contraire ci-dessus, le contenu de cette notice bibliographique peut être utilisé dans le cadre d’une licence CC BY 4.0 Inist-CNRS / Unless otherwise stated above, the content of this bibliographic record may be used under a CC BY 4.0 licence by Inist-CNRS / A menos que se haya señalado antes, el contenido de este registro bibliográfico puede ser utilizado al amparo de una licencia CC BY 4.0 Inist-CNRS Notes: Agronomy. Soil sciences and vegetal productions ; Cytology, morphology, systematics, floristics, plants physiology, evolution and development

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MONOPOTASSIUM PHOSPHATE AS AN IN-SEASON FERTIGATION OPTION FOR POTATO