Spatial variability of fathen seeds in the soil under repeat maize cropping

Authors

  • A. Rahman
  • T.K. James
  • N. Grbavac
  • J.E. Waller
  • J. Mellsop

DOI:

https://doi.org/10.30843/nzpp.1999.52.11567

Abstract

Variability in distribution of fathen seeds in the soil was investigated to develop sampling protocols. Vertical distribution of seeds was assessed at 0-2.5, 2.5-5.0, 5.0-10.0 and 10.0-15.0 cm depth. Horizontal distribution of seeds in the top 5cm of soil was assessed in a 20 by 2.5 m grid at 50 cm intervals. Seeds were extracted from the samples by sieving and their viability was assessed. The fathen seed numbers halved with each 5 cm increase in depth. Seed numbers declined along the row in some cases but there was little localised clumping (? 1 m) of the seed. The most efficient method of sampling the fathen seedbank in a large field would be to take samples on a rectangular grid pattern to a depth of 10 cm.

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Published

1999-08-01

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Section

Papers

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