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The Effects of Sowing Time and of Nitrogen On Peas, Pisum Sativum and On Pea Root Eelworm, Heterodera Goettingiana Liebscher

The Effects of Sowing Time and of Nitrogen On Peas, Pisum Sativum and On Pea Root Eelworm,... THE EFFECTS OF SOWING TIME AND OF NITROGEN ON PEAS, PISUM SATIVUM AND ON PEA ROOT EELWORM, HETERODERA GOETTINGIANA LIEBSCHER BY F. MORIARTY School of Agriculture, University of Cambridge, England In two experiments the effect of sowing time on eelworm multiplication was variable, and in one experiment the effect of nitrogen was negligible. The relationship between yield and initial eelworm density was also variable, probably because peas, unlike many susceptible hosts, are not stimulated by larval invasion to form new lateral roots, so that at times of water shortage, even with a low eelworm density, absorption of soil solution is seriously impaired, whereas, with moister conditions, the plant will be unaffected. This paper describes two population experiments on pea root eelworm in 1956 and 1957, the first in microplots, the second in garden plots. Micro plot experiment Twenty microplots filled with an infested loamy sand from Aldringham, Suf- folk, (Jones, 1956), were used for the 1956 experiment. Compound fertilizer (0 : 10 : 20) at 5 quintalslhectare (2 cwts/acre) was raked into the top soil when the seed bed was prepared. Five microplots were sown with pea, variety Onward, to give 350,000 plants/hectare (140,000/acre) on 27 March, 17 http://www.deepdyve.com/assets/images/DeepDyve-Logo-lg.png Nematologica Brill

The Effects of Sowing Time and of Nitrogen On Peas, Pisum Sativum and On Pea Root Eelworm, Heterodera Goettingiana Liebscher

Moriarty, F.
Nematologica , Volume 8 (2): 7 – Jan 1, 1962
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Publisher
Brill
Copyright
Copyright © Koninklijke Brill NV, Leiden, The Netherlands
ISSN
0028-2596
eISSN
1875-2926
DOI
10.1163/187529262X00396
Publisher site
See Article on Publisher Site

Abstract

THE EFFECTS OF SOWING TIME AND OF NITROGEN ON PEAS, PISUM SATIVUM AND ON PEA ROOT EELWORM, HETERODERA GOETTINGIANA LIEBSCHER BY F. MORIARTY School of Agriculture, University of Cambridge, England In two experiments the effect of sowing time on eelworm multiplication was variable, and in one experiment the effect of nitrogen was negligible. The relationship between yield and initial eelworm density was also variable, probably because peas, unlike many susceptible hosts, are not stimulated by larval invasion to form new lateral roots, so that at times of water shortage, even with a low eelworm density, absorption of soil solution is seriously impaired, whereas, with moister conditions, the plant will be unaffected. This paper describes two population experiments on pea root eelworm in 1956 and 1957, the first in microplots, the second in garden plots. Micro plot experiment Twenty microplots filled with an infested loamy sand from Aldringham, Suf- folk, (Jones, 1956), were used for the 1956 experiment. Compound fertilizer (0 : 10 : 20) at 5 quintalslhectare (2 cwts/acre) was raked into the top soil when the seed bed was prepared. Five microplots were sown with pea, variety Onward, to give 350,000 plants/hectare (140,000/acre) on 27 March, 17

Journal

Nematologica – Brill

Published: Jan 1, 1962

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