CORN RESPONSE TO 2 FERTILIZATION RATES UNDER SW SPAIN CONDITIONS - EFFECT ON THE FE, MN, ZN, CU AND B LEVELS OF THE PLANT

Citation
C. Castro et al., CORN RESPONSE TO 2 FERTILIZATION RATES UNDER SW SPAIN CONDITIONS - EFFECT ON THE FE, MN, ZN, CU AND B LEVELS OF THE PLANT, Agrochimica, 39(1), 1995, pp. 1-9
Citations number
14
Categorie Soggetti
Agriculture,"Agriculture Soil Science
Journal title
ISSN journal
00021857
Volume
39
Issue
1
Year of publication
1995
Pages
1 - 9
Database
ISI
SICI code
0002-1857(1995)39:1<1:CRT2FR>2.0.ZU;2-Q
Abstract
Iron, Mn, Zn, Cu and B contents of corn cv. PRISMA were studied in rel ation to two fertilizer treatments: the high rate used in irrigated fi elds in sw Spain (1000 kg/ha of 15-15-15 complex fertilizer and two ap plications of 400 kg/ha of urea, 46%N) and the same rate reduced to on e third. In general, the concentration of these micronutrients were al ways within the limits of the corresponding sufficiency ranges propose d in the literature for different stages of the crop. According to DRI S indices, Cu and especially Mn were clearly sufficient for PRISMA cor n throughout the period of cultivation, Zn being essentially balanced. Iron and B showed contrasting pattern, B being comparatively low init ially and essentially adequate at flowering and maturity, and Fe being quite sufficient initially and comparatively low at flowering and mat urity.