Cottage Trees & Plants: Keeping your forest healthy by Cottage Life

By Cottage Life

Through the years, Cottage lifestyles journal has acquired many questions about cottage-country plants, and we've stumbled on botanists, horticulturists, arborists, and different "ists" who gives you professional solutions. listed below are the most fascinating questions and solutions, with functional recommendation that will help you nurture the woodland at your cottage.

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The first stage, immediate adhesion, occurs upon hydration of freshly deposited conidia. Conidia of B. cinerea adhere to tomato fruit cuticle, grape berry epidermis, and leaves and petals of other hosts immediately upon hydration. Dry conidia of B. cinerea applied to wet fruit surfaces adhered to the same degree as conidia from liquid suspensions to the surface of plum and grape. The conidia adhere more strongly when applied in water suspension or to the wet surface of grape berries than when dry conidia are applied to a dry surface (Spotts and Holz, 1996).

Firstly, there may be conidia in a dormant state adhering to the skin. Secondly, there may be germlings that had penetrated the skin, but were localised by host defence. In the case of dormant conidia adhering on a dry surface, wounding should be near a conidium thereby breaking the cuticle and supplying the conidium with necessary moisture and nutrients to germinate and to infect. In the case of a germling that had penetrated the skin, but was localised by host defence, wounding should be near the germling, an action that should overcome the host resistance and supply the established pathogen with the necessary nutrients to escape the host defence barrier and cause the tissue to rot.

The greater the number of conidia clumped together, the faster the settling speed (Ferrandino and Aylor, 1984). Under simulated wind conditions, conidia of Botrytis species are released from different sources singly, and in clumps, consisting of c. three and five conidia per clump, for B. cinerea and B. fabae, respectively (Harrison and Lowe, 1987). Because similar proportions of conidia fell as clumps from undisturbed inverted cultures as from those blown by a strong wind and because the mean numbers of conidia per clump were similar, wind appears to have little effect on clumping (Harrison and Lowe, 1987).

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