Spatial variation of micronutrients in topsoil and subsoil of Vertic Haplustepts
Küçük Resim Yok
Tarih
2009
Dergi Başlığı
Dergi ISSN
Cilt Başlığı
Yayıncı
PISA UNIV PRESS
Erişim Hakkı
info:eu-repo/semantics/closedAccess
Özet
Spatial variability of microelements can help analyze the factors and processes controlling their availability to plants in a field. The objectives of this study were to analyze spatial structure of plant available micronutrients (Fe, Mn, Zn, Cu and B) in a large alluvial field (45 ha) under different crop patterns, map plant available micronutrients using geostatistical methods, and evaluate the factors and processes controlling the variability of micronutrients. A geostatistical sampling scheme was adopted, and 188 soil samples were taken from topsoils (0-20 cm) and subsoils (20-40 cm). DTPA extracted Cu showed the lowest variation (CV = 25.89% for topsoil and CV = 27.48% for subsoil), and Mn showed the highest variation (CV = 47.56% for topsoils and CV = 60.62% for subsoil). Geostatistical range varied from 102 in (Mn) to 406 in (B) in topsoil. Cupper had the shortest (80 m), and B had the longest range (408 m) in subsoils. Iron content showed the strongest spatial dependency, and the rest of the micronutrients studied exhibited a moderate spatial dependency based on nugget/sill ratio. Kriging maps of micronutrients revealed that Zn was deficient in the both topsoil and Subsoil of the whole field.
Açıklama
Anahtar Kelimeler
geostatistics, kriging, micronutrients, semivariogram
Kaynak
AGROCHIMICA
WoS Q Değeri
Q4
Scopus Q Değeri
Q4
Cilt
53
Sayı
2
