Brushtail possums began colonising a rata/kamahi forest in the Taramakau catchment, Westland, about 1950 and by 1973 had caused widespread conspicuous canopy defoliation. They were poisoned in one block of this forest in 1970, at about the time they reached peak density, and again in 1974. In an adjacent block they were poisoned in 1974 only. A survey of forest canopy condition in 1985 showed t...

tween a ‘‘declining’’ and a ‘‘healthy’’ sugar maple (Acer saccharum Marsh.) stand in Vermont, USA. The declining stand had lower basal area increment and more crown dieback than the healthy stand. Soil pH and base cation content were lower and soil water content was higher at the site of the declining stand than at the site of the healthy stand, whereas soil temperature did not differ significa...

Scorch disease caused by Blueberry scorch virus (BlSV) spreads rapidly and radially from foci of infection. Healthy potted blueberry plants became infected when placed next to diseased field bushes from early May through mid-August. The aphid Fimbriaphis fimbriata, collected from infected field bushes, transmitted BlSV to healthy blueberry plants in controlled tests and was regarded as the most...

K Gurava Reddy, A Subbarami Reddy J.Satish babu and M Chandra Sekhara Reddy Scientist (Extension), Scientist (Agronomy),Scientist (Pl. Path.), Scientist (Economics) Regional Agricultural Research Station, Lam, Guntur, ANGRAU, Hyderabad, A.P ABSTRACT: An Integrated Pest Management (IPM) project was implemented in Guntur district during the cropping season 2006-07 in six villages of Guntur distri...

Arctostaphylos pungens "Manzanita" is an important shrub in the southwestern USA, and northern and central Mexico. Manzanita bears apple-like fruit that is utilised for a range of edible products. Over the past two years, several foliar disease problems were noted on this host in the San José de Gracia region of Mexico. The aim of the present study was to elucidate their identity through the an...

Background and Objectives: The existence of common ash (Fraxinus excelsior) in Europe is severely endangered by dieback. To support its future sustainability, it essential to improve the natural regeneration. main aim this study was investigate influence light conditions, conceivably influenced stand structure/ash dieback, on regeneration competition between seedlings species growing understory...

Warming temperatures and droughts are driving widespread forest dieback growth decline worldwide. In forests experiencing dieback, declining trees may exhibit altered climate memory of growth, indicative physiological impairment. Thus, we evaluated climate-growth responses in four drought-disturbed dominated either by gymnosperms (Abies alba, Pinus sylvestris) or angiosperms (Fagus sylvatica, Q...

Abstract Common ash ( Fraxinus excelsior L.) is an economically and ecologically important tree species in Europe acutely threatened by dieback. Here, we present a new set of Simple Sequence Repeat markers for F. six related based on published silico designed primers. Forty SSR markers, mainly from genic regions, were tested amplification polymorphism characterized two populations Germany. Tran...