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Titolo:
Evaluation of polyolefin-coated urea for potato production on a sandy soil
Autore:
Zvomuya, F; Rosen, CJ;
Indirizzi:
Univ Minnesota, Dept Soil Water & Climate, St Paul, MN 55108 USA Univ Minnesota St Paul MN USA 55108 ater & Climate, St Paul, MN 55108 USA
Titolo Testata:
HORTSCIENCE
fascicolo: 6, volume: 36, anno: 2001,
pagine: 1057 - 1060
SICI:
0018-5345(200110)36:6<1057:EOPUFP>2.0.ZU;2-O
Fonte:
ISI
Lingua:
ENG
Soggetto:
NITROGEN MANAGEMENT; CROP RESPONSE; NITRATE; SIMULATION; IRRIGATION; YIELD;
Keywords:
Solanum tuberosum; polyolefin-coated urea; controlled-release fertilizer; economic analysis;
Tipo documento:
Article
Natura:
Periodico
Settore Disciplinare:
Agriculture,Biology & Environmental Sciences
Citazioni:
32
Recensione:
Indirizzi per estratti:
Indirizzo: Rosen, CJ Univ Minnesota, Dept Soil Water & Climate, 1991 Upper Buford Circle, St Paul, MN 55108 USA Univ Minnesota 1991 Upper Buford Circle St Paul MN USA 55108 USA
Citazione:
F. Zvomuya e C.J. Rosen, "Evaluation of polyolefin-coated urea for potato production on a sandy soil", HORTSCIENCE, 36(6), 2001, pp. 1057-1060

Abstract

Field studies were conducted on a Hubbard loamy sand (sandy, mixed, frigidEntic Hapludoll) during 1996 and 1997 at Becker, Minn., to evaluate the effect of a polyolefln-coated urea (POCU) fertilizer (Meister, Chisso Co.,Japan) on yield and quality of irrigated 'Russet Burbank' potatoes (Solanum tuberosum L.). The POCU was a 3:1 mixture of 70-day and 50-day release formulations, respectively, based on historical soil temperatures at the site. The study compared five banded nitrogen (N) rates (110, 155,200, 245, and 290kg . ha(-1) N) as a split application of urea applied at emergence and hilling, vs. POCU applied at planting. All plants received an additional 30 kg. ha(-1) N as monoammonium. phosphate band-applied at planting. Yields were higher in 1996 because of cooler temperatures and poor tuber set in 1997. Total and marketable yields averaged, respectively, 3.9 and 3.3 Mg . ha(-1) higher with POCU than with urea. Total yield was not affected by rate of N application regardless of source, but marketable yield increased linearlywith N rate. The yield of marketable tubers larger than 170 g increased linearly with N rate in both years. Gross return was 10% higher with POCU than with urea, but estimated net return showed a significant source x N rate interaction. The net return increased by $3.13 per kg of urea-N applied, but there was no significant change across POCU application rates.

ASDD Area Sistemi Dipartimentali e Documentali, Università di Bologna, Catalogo delle riviste ed altri periodici
Documento generato il 20/01/20 alle ore 07:29:04