NITROGEN DEFICIENCY
The first part of this section describes the general conditions likely to result in nutrient deficiency or toxicity symptoms in vegetable crops. Methods of overcoming nutrient disorders are included. The specific symptoms and nutrient ... [... more]
HortNET New Zealand |
10. Nitrogen excess
Excess nitrogen readily reduces the growth of kiwifruit (Photo 10a). Symptoms appear first on the older leaves as an interveinal scorching which spreads from the leaf margins towards the midrib (Photo 10b). Leaves on affected plants are very much ... [... more]
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15. Sulphur deficiency
Sulphur deficiency causes some visible symptoms which resemble those of nitrogen deficiency. These include a severe reduction in growth and the development of pale-green to yellow leaves. An important point of difference, however, is that the ... [... more]
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LEGUMINOSEAE (broad beans, peas, French beans, runner beans)
LEGUMINOSEAE (broad beans, peas, French beans, runner beans) CRUCIFERAE (cabbage, cauliflower, brussel sprouts, turnip, swede, radish) CUCURBITACEAE (squash, pumpkins, melons, cucumbers, courgettes) Nitrogen requirements are the total requirement ... [... more]
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3. Nitrogen deficiency
Nitrogen deficiency severely reduces the growth of kiwifruit (Photo 3a). Deficiency symptoms develop first on the older leaves and spread progressively to young leaves until the whole plant is affected (Photo 3b). Initially, there is a gradual ... [... more]
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HortNews - Growers Trial Ways Of Adding Nitrogen To Grapes
A Craggy Range vineyard in the Gimblett Gravels area is trialling different ways to add nitrogen to vines so that grapes will ferment better. HASTINGS 27/08/2004 - A Craggy Range vineyard in the Gimblett Gravels area is trialling different ways ... [... more]
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Nitrogen Fertilising for Citrus
Getting nitrogen fertilising right can dramatically improve citrus returns. Our latest trial results indicate that autumn applications are best for tree health and fruit quality. As citrus growers, we need to make several decisions before ... [... more]
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Timing Of Nitrogen Absorption in Kiwifruit
Kiwifruit accumulate large amounts of nutrients in vegetative growth during spring. Only part of this can be supplied by the limited reserves in the upper portion of the vine's perennial framework. Recognition of this has lead to the ... [... more]
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Citrus in Small Spaces
A fertiliser that has a fish base which is fortified with nitrogen, phosphorus and potassium. The ratio of which is 12:1.4:7 respectively. Available in easy to use hose and spray packs, as well as the economical concentrate. packs, ranging from ... [... more]
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