Skip to main content

Table 1 Soil test

From: Tri-trophic interactions among nitrogen-fertilized tomato cultivars, the tomato fruit worm, Helicoverpa armigera (Hübner) (Lepidoptera: Noctuidae) and the ectoparasitoid, Habrobracon hebetor (Say) (Hymenoptera: Braconidae)

 NNH3OCaSandSiltClayKBCuZnFePECbpH
TestKjeldahlTitrationTitrationHydrometerHydrometerHydrometerFlame PhotometerfAzomethine HeAtomicAtomicAtomicdOlsencConductometerpH meter
Normal0.2<1.5<40–5030–4020–3025022312152>6.5–7.5
Sample0.040.015.48866108.41.841.1612.097.24204.836.85
  1. aOC organic carbon, bEC soil electrical conductivity, cOlsen soil P test method, dAtomic atomic absorption spectroscopy, eAzomethine H colorimetric reagent for B detection, fFlame Photometer determination of certain metal ions