Rotation crop effects on Pratylenchus penetrans and subsequent crop yields
نویسندگان
چکیده
منابع مشابه
Analysis of crop losses in tomato due to Pratylenchus penetrans.
The effects of Pratylenchus penetrans upon yields of 'Veebrite' tomato were studied at initial soil population densities (P(i)) of 360, 2,010, 4,580, and 14,360 nematodes/kg of soil in 20-cm (i.d.) clay-tile microplots. The lowest P(i) appeared to stimulate fruit production. Higher P(i)'s suppressed fruit production (total weight of marketable tomatoes and numbers of intermediate- and large-siz...
متن کاملCrop Rotation and Nitrogen Effects on Normalized Grain Yields in a Long-Term Study
information is available on their effect on year-toyear variability. Effects of year-to-year variability in agricultural production systems There have been several attempts to analyze what have always been a concern, but few studies are conducted for a long effect these different aspects of management may have enough period of time where management system evaluations and assessments can be made...
متن کاملEffect of Crop Rotation on Meloidogyne spp. and Pratylenchus spp. Populations in Strawberry Fields in Taiwan.
Changes in population levels of Meloidogyne hapla, M. incognita, Pratylenchus coffeae, and P. penetrans were studied in 12 strawberry fields in the Dahu region of Taiwan. Ten potential rotation crops and two cultural practices were evaluated for their effect on nematode populations and influence on strawberry yield. Rotation with rice or taro and the cultural practice of flooding and bare fallo...
متن کاملOn Technological Change in Crop Yields
Technological changes in agriculture tend to alter the mass associated with a segment or subpopulation of the yield distribution as opposed to shifting the entire distribution upwards. We propose modeling crop yields using mixtures with embedded trend functions to account for potentially different rates of technological change in different subpopulations of the yield distribution. By doing so w...
متن کاملCrop rotation modelling
For use in an Internet application on whole farm modelling we needed to determine a reasonable crop rotation given only the crops in the rotation and the number of hectares of each crop. The crop rotation problem considered in this paper is therefore that of determining hectares of precrops for each crop. Crop rotation modelling in general is traditionally done by using linear programming. In t...
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ژورنال
عنوان ژورنال: Canadian Journal of Plant Science
سال: 2000
ISSN: 0008-4220,1918-1833
DOI: 10.4141/p99-084