Introduction

Images of cotton

• Excellent cotton - Gossypium hirsutum - El Salvador
• Healthy cotton - Gossypium hirsutum - El Salvador
• Cotton on the grand scale - El Salvador
• Healthy cotton - Gossypium barbadense - Sea Island Cotton - Sudan
• Sea Island Cotton - Gossypium barbadense - Sudan
• Sea Island Cotton - Gossypium barbadense - Sudan

Pests

• The Boll Weevil - Anthonomus grandis adult - El Salvador
• White Fly - Bemisia tabaci - adults - Sudan
• White Fly - Bemisia tabaci- adults, eggs and small larvae - Sudan
• White Fly - Bemisia tabaci- adults, eggs and small larvae - Sudan
• Virosis infection - Guatemala
• Looper caterpillar - Trichoplusia ni larvae - El Salvador
• Looper caterpillar - Trichoplusia ni pupa - El Salvador
• Alabama caterpillar - Alabama argillacea larvae - El Salvador
• Armyworm - Spodoptera egg mass with emerged first instar larva - Colombia
• Armyworm - Spodoptera frugiperda larvae - El Salvador
• Armyworm - Spodoptera exigua larvae - the army worms invaded the La Herradura trials site from adjacent uncultivated land - Colombia
• Bollworm - "flared" bud - due to infestation by Heliothis zea first instar larva - El Salvador
• Bollworm - Heliothis zea first instar larva - El Salavador
• Bollworm - "flared" bud - due to infestation by Heliothis zea second instar larva - El Salvador
• Bollworm - flower damaged by Heliothis zea fourth instar larva - El Salvador
• Bollworm - cotton boll damaged by Heliothis zea fourth instar larva - El Salvador
• Bollworm - cotton boll damaged by Heliothis zea fourth instar larva - El Salvador

Countering the pests

• Cotton - to spray or not to spray? - El Salvador
• Sprayers - collection at the Tea Research Foundation - Malawi
• Simple back pack sprayer - note no protective clothing - Pakistan
• "Solo" mistblower sprayer - used in small scale trial - El Salvador
• Small scale trial spraying - Gezira Research Station - Sudan
• Tractor mounted sprayer - Egypt
• La Herradura field trials site with marker flags - Colombia
• Helicopter spraying - Cali field trials site - Colombia
• The Estra spraying company airfield - La Herradura - Colombia
• Conventional spraying at La Herradura - Colombia
• ULV discharge (Egypt)
• Spraying aircraft at base, boom type applicator for "conventional" applications - second series of 1977 trials, with different formulations (in small drums) - Sta. Lucia Orcoyo - El Salvador
• Mixing tank at air strip - second series of 1977 trials, with different formulations (in small drums) - Sta. Lucia Orcoyo - El Salvador
• Spraying aircraft at base, boom type applicator for "conventional" applications - second series of 1977 trials - El Salvador
• Large scale field trial site - early morning mist - marker flags set out - Hacienda Sta. Lucia Orcoyo - El Salvador
• Spray aircraft in approach run - conventional boom applicator - Sta. Lucia Orcoyo - El Salvador
• Large scale field trial site - conventional application in progress - Sta. Lucia Orcoyo - El Salvador
• Spraying aircraft at base, "Acumist Atomiser" applicator for "ULV" applications - El Salvador
• Acumist Atomiser for ULV applications - close up - El Salvador
• ULV spraying at Hacienda Sta. Teresa El Porfiado - El Salvador

The end result

• Ripe boll - ready for picking - Gossypium hirsutum - El Salvador
• Cotton field awaiting picking - El Salvador
• Cotton on the grand scale - picking - Guatemala
• Cotton awaiting transport to the gin - El Salvador
• Cotton packing - Guatemala
• Cotton packing - Guatemala
• Cotton packing - Guatemala
• Cotton Gin - Guatemala
• Cotton Bales - Guatemala

Doing the trials

• Max-min thermometer on coconut alongside first trial site - Hacienda Sta. Teresa El Porfiado - El Salvador
• Problems with flood irrigation - Sudan
• Problems with flood irrigation - Sudan
• What's preventing the spraying? - Sudan

Maps showing locations of field trials

• El Salvador
• Central Colombia
• Sudan Gezira

Appendices

• Report on cotton field trials in El Salvador, 1977
• Report on cotton field trials in Colombia, 1978
• Report on cotton field trials in Sudan, 1978

Brian Taylor publications

©2002, 2007 - Brian Taylor CBiol FIBiol FRES 11, Grazingfield, Wilford, Nottingham, NG11 7FN, U.K. Visiting Academic in the Department of Life Science, University of Nottingham

href="\cotton\contents.htm"