Evaluation of soil micronutrients under different spacing of Eucalyptus-based agroforestry system

SANGAM BADESHRA; K K BHARDWAJ; SONIA DEVI; GARIMA DAHIYA; R S DHILLON

doi:10.56093/ijas.v91i11.118528

Authors

SANGAM BADESHRA CCS Haryana Agricultural University, Hisar 125 004, India
K K BHARDWAJ CCS Haryana Agricultural University, Hisar 125 004, India
SONIA DEVI CCS Haryana Agricultural University, Hisar 125 004, India
GARIMA DAHIYA CCS Haryana Agricultural University, Hisar 125 004, India
R S DHILLON CCS Haryana Agricultural University, Hisar 125 004, India

https://doi.org/10.56093/ijas.v91i11.118528

Keywords:

Agroforestry, Depth, Eucalyptus, Micronutrients, Spacing

Abstract

A study was carried out during 2016–17 at Research Farm of the Department of Forestry, CCS Haryana Agricultural
University, Hisar, Haryana to assess the effect of Eucalyptus planting geometry (17 m × 1 m × 1 m, 6 m × 1.5 m, 3 m
× 3 m and devoid of trees, i.e. control) on soil micronutrients (zinc, iron, manganese, and copper) at the soil depths of 0–15, 15–30, 30-60 and 60–90 cm. The results showed that the different planting spacing of Eucalyptus, soil depths, and their interactions on micronutrients were significantly different and these were decreased with increasing the soil depth. The DTPA extractable micronutrient Zn, Fe, Mn, and Cu were in the range 0.8-1.3, 5.1-6.7, 6.8-8.1, and 2.6-3.1 mg/kg respectively. The soil micronutrient content decreased under a wider spacing agroforestry system but the maximum reduction was found under control treatment when compared with closer spacing (3 m × 3 m). The increase in micronutrient availability in soil due to the influence of Eucalyptus tereticornis was more in the surface (0-15 cm) than in subsurface soil (15-30, 30-60, and 60-90 cm) layers.

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