Infection of Phytophthora palmivora from Soil in Cocoa Plantation
نویسندگان
چکیده
منابع مشابه
Pesticide pollution status in cocoa plantation soil
Management of cocoa plantation field relied on the use of pesticides over the years; hence, the fate of such chemicals is one of the most debated issues among the stakeholders. Young and old cocoa plantation fields from 4 major cocoa producing States in Nigeria were selected as the study area. Eight composites soil samples collected from 3 portions of 6 transect measured area (100 x 50m) of the...
متن کاملNegative Chemotaxis of Zoospores of the Fungus Phytophthora palmivora
347 Phytophthora palmivora zoospores are repelled by many low molecular weight cations. This negative chemotactic response occurs at a different threshold concentration for each cation, that for the most effective ion, H+, being 150 ,!AM. The effectiveness of different cations parallels their ionic conductivities, the most active cations having the highest conductivities. It is suggested that t...
متن کاملAnalysis of expressed sequence tags (ESTs) from cocoa (Theobroma cacao L) upon infection with Phytophthora megakarya
Phytophthora megakarya, the causative agent of cacao black pod disease in West African countries causes an extensive loss of yield. In this study we have analyzed 4 libraries of ESTs derived from Phytophthora megakarya infected cocoa leaf and pod tissues. Totally 6379 redundant sequences were retrieved from ESTtik database and EST processing was performed using seqclean tool. Clustering and ass...
متن کاملMajor Crops Affected by Phytophthora
Phytophthora pathogens are responsible for some of the most serious diseases of cocoa including phytophthora pod rot (PPR) or black pod, stem canker, leaf and seedling blight, chupon wilt and flower cushion infections. PPR causes 10–30% annual losses in production of cocoa beans globally, and much higher losses locally in particularly wet and humid conditions. Stem canker causes further losses ...
متن کاملIn Situ Remediation Activities of Rock Phosphate In Heavy-Metal Contaminated Cocoa Plantation Soil In Owena, South Western, Nigeria
The continuous use of copper-based fungicide over the years in the control of black pod disease has led to heavy-metal accumulation in cocoa soils due to its non biodegradable nature. Considering the limited, available forest, it is therefore, necessary for the existing heavy-metal contaminated cocoa soils to undergo soil remediation in order to reduce the bioavailability of metals for plant up...
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ژورنال
عنوان ژورنال: Pelita Perkebunan (a Coffee and Cocoa Research Journal)
سال: 2008
ISSN: 2406-9574,0215-0212
DOI: 10.22302/iccri.jur.pelitaperkebunan.v24i3.103