Crop yields and nematode population densities in triticale-cotton and triticale-soybean rotations

Triticale cv. Beagle 82, cotton cv. McNair 235, and soybean cv. Twiggs were arranged in three cropping sequences to determine the effects of fenamiphos and cropping sequence on nematode population densities and crop yields under conservation tillage for 4 years. The cropping sequences were triticale...

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Veröffentlicht in:Journal of nematology. - 1969. - 30(1998), 3 vom: 09. Sept., Seite 353-61
1. Verfasser: Johnson, A W (VerfasserIn)
Weitere Verfasser: Dowler, C C, Baker, S H, Handoo, Z A
Format: Aufsatz
Sprache:English
Veröffentlicht: 1998
Zugriff auf das übergeordnete Werk:Journal of nematology
Schlagworte:Journal Article Glycine max Gossypium hirsutum Helicotylenchus dihystera Meloidogyne incognita Pratylenchus brachyurus Triticosecale conservation tillage cotton crop rotation mehr... fenamiphos lesion nematode management nematicide nematode root-knot nematode soybean spiral nematode triticale
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245 1 0 |a Crop yields and nematode population densities in triticale-cotton and triticale-soybean rotations 
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520 |a Triticale cv. Beagle 82, cotton cv. McNair 235, and soybean cv. Twiggs were arranged in three cropping sequences to determine the effects of fenamiphos and cropping sequence on nematode population densities and crop yields under conservation tillage for 4 years. The cropping sequences were triticale (T)-cotton (C)-T-C, T-soybean (S)-T-S, and T-C-T-S. Numbers of Meloidogyne incognita second-stage juveniles declined on trificale but increased on cotton and soybean each year. Root-gall indices of cotton and soybean ranged from 1.00 to 1.08 (1 to 5 scale: 1 = 0%, 2 = 1% to 25%, 3 = 26% to 50%, 4 = 51% to 75%, and 5 = 76% to 100% of roots galled) each year and were not affected by fenamiphos treatment or cropping sequence. Numbers of Pratylenchus brachyurus were maintained on trificale and generally increased more on soybean than on cotton. Population densities of Helicotylenchus dihystera were near or below detection levels in all plots during the first year and increased thereafter in untreated plots in the T-C-T-C and T-S-T-S sequences. Generally, yields of triticale in all cropping sequences declined over the years. Yields of cotton and soybean were not affected by fenamiphos at 6.7 kg a.i./ha. Cotton and soybean were grown successfully with little or no suppression in yields caused by nematodes in conservation tillage following triticale harvested for grain 
650 4 |a Journal Article 
650 4 |a Glycine max 
650 4 |a Gossypium hirsutum 
650 4 |a Helicotylenchus dihystera 
650 4 |a Meloidogyne incognita 
650 4 |a Pratylenchus brachyurus 
650 4 |a Triticosecale 
650 4 |a conservation tillage 
650 4 |a cotton 
650 4 |a crop rotation 
650 4 |a fenamiphos 
650 4 |a lesion nematode 
650 4 |a management 
650 4 |a nematicide 
650 4 |a nematode 
650 4 |a root-knot nematode 
650 4 |a soybean 
650 4 |a spiral nematode 
650 4 |a triticale 
700 1 |a Dowler, C C  |e verfasserin  |4 aut 
700 1 |a Baker, S H  |e verfasserin  |4 aut 
700 1 |a Handoo, Z A  |e verfasserin  |4 aut 
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