Nut Crop Management

Crop Management

This page covers various aspects of crop management for the production of nuts.

Each of the nut industry peak bodies websites contain information on crop management considerations for respective nut types.


Pollination
Nut crops have differing pollination requirements. Hazel nuts, walnuts and chestnuts are all wind-pollinated. Transfer of pollen from an anther (pollen sac) of one plant to a stigma (tip of the female part of a flower) of another plant by wind. The pollen is typically produced in large quantities and may be winged; the flowers typically do not secrete nectar – (Department of Agriculture and Food – WA)

Macadamias, peanuts, pecans, pistachios and cashews are all insect pollinated.

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Pest and Disease Management

This section identifies key problem pests and diseases affecting nut production and provides links to authoritive up to date literature and advice services. We also plan to include listings of firms providing services for the management of pests and diseases affecting nut crops.

 

Biological Control
Where the opportunity exists, biological control of pest species can offer significant sustainable, environmental and commercial advantages to alternative methods of pest and vegetative management.

The following sites offer useful information:

Biological Control of Macadamia Nut Borer. The use of the Trichogrammatoidea cryptophlebiae wasp to act as a parasite to control macadamia nut borer Cryptophlebia ombrodelta is now widespread and proving very effective. Trichogramma attack the egg stage of nutborer.

Green Ant Colonies in Cashew Crops. The tea mosquito bug, the mango tip borer, the fruit spotting bug, the leafroller and the
green bug are potential pest species for cashew crops. Green ants are evaluated as a control agent.

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Crop Management Services

The following bodies offer goods and services relevant to the growing and processing of nuts.

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Composts, Fertilizers and Soil Conditioners

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Wildlife and Pest Control

Bird Damage
Damage control techniques to assist in protecting nut crops include scaring, shooting, trapping, exclusion, minimising residual grain and even providing decoy foods.

As a number of species of birds causing crop damage are also protected under legislation, you should contact a relevant state government representative if your preferred control mechanism involves trapping or destruction of wildlife, and you’re unsure of legal requirements. Generally shooting is heavily restricted, environmentally unacceptable, labour intensive and expensive.

The following “Notes” and references may assist.

Bird Control Agents
Local Governments often place restrictions on the use of “bird scare guns” and similar devices in residential areas. It may be useful to contact your Local Government Office prior to the purchase of a bird scare gun. Attached, as a sample, are the rules applying to the Alpine Shire Council.

Wildlife and Pest Damage

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Further Information

Soil, nutrition and orchard floor management (NSW Primary Industries – Agriculture)

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