{"id":7818,"date":"2018-11-04T21:07:00","date_gmt":"2018-11-04T19:07:00","guid":{"rendered":"https:\/\/www.torosidis.gr\/?p=7818"},"modified":"2026-09-27T13:28:06","modified_gmt":"2026-09-27T10:28:06","slug":"%ce%bb%ce%af%cf%80%ce%b1%ce%bd%cf%83%ce%b7-%cf%80%cf%8c%cf%84%ce%b5-%ce%b5%ce%af%ce%bd%ce%b1%ce%b9-%ce%b7-%ce%ba%ce%b1%cf%84%ce%b1%ce%bb%ce%bb%ce%b7%ce%bb%cf%8c%cf%84%ce%b5%cf%81%ce%b7-%ce%b5%cf%80%ce%bf%cf%87%ce%ae-%ce%ac%ce%b6%cf%89%cf%84%ce%bf","status":"publish","type":"post","link":"https:\/\/www.torosidis.gr\/en\/%ce%bb%ce%af%cf%80%ce%b1%ce%bd%cf%83%ce%b7-%cf%80%cf%8c%cf%84%ce%b5-%ce%b5%ce%af%ce%bd%ce%b1%ce%b9-%ce%b7-%ce%ba%ce%b1%cf%84%ce%b1%ce%bb%ce%bb%ce%b7%ce%bb%cf%8c%cf%84%ce%b5%cf%81%ce%b7-%ce%b5%cf%80%ce%bf%cf%87%ce%ae-%ce%ac%ce%b6%cf%89%cf%84%ce%bf\/","title":{"rendered":"Lubrication. When Is the Best Time? Nitrogen"},"content":{"rendered":"

Nitrogen is one of the most important nutrients that plants need in order to grow adequately. Nitrates (NO3-) and ammoniacal (NH4+) ions are the main forms of nitrogen absorbed by plants. Ammonium ions are absorbed at a slower speed and converted into the nitrate form through nitrification. When nitrogen is added in insufficient or excessive amounts it can negatively affect production and productivity<\/p>\n\n\n\n

\u00b7 Studies have revealed two separate periods of , nitrogen absorption, the first one starting slowly after the buds have budded and extending to passage and the second one post-harvest and up to normal defoliation.<\/p>\n\n\n\n

The second period of intense nitrogen absorption garnered 34% the overall requirements of the plant for the growing season.<\/p>\n\n\n\n

\u00b7 During the vegetative period the distribution of nitrogen within the plant was also investigated by showing the accumulation of nitrogen in the , fruits in the , leaves in the pruning wood and in the duct system which amounted to 35.8% , 31,4% , 14.4% and 18.7% respectively.<\/p>\n\n\n\n

\u00b7 Knowledge of uptake periods is particularly useful , but moving and distributing the added nitrogen in both periods is of particular interest.<\/p>\n\n\n\n

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* Determination of the amount of nitrogen to be added to each application is a more complex issue , but the finding that 60% the nitrogen reserves of the plant during the budding period come from what is added after harvesting highlights the importance of the applied post-harvest nitrogen fertilisation programme.<\/p>\n<\/blockquote>\n<\/div>

\"malagouzia<\/a><\/figure><\/div>\n\n\n\n

<\/p>\n\n\n\n

It was found that during the period of decline only 22% \u00b7 the nitrogen content in the , plant corresponded to the amount added early in the summer (after flowering). Of this most of it is located (52%) growing vegetation and the rest in grapes (28%) and permanent parts of the plant (20%).<\/p>\n\n\n\n

From the harvest period until the dormancy, the distribution of nitrogen within the plant is differentiated and shifted to its permanent parts. During this period only 6% ^ \"Total nitrogen in the plant corresponds to that added in early summer , and is detected by 78\".% at the roots and 22% in the other permanent parts. <\/p>\n\n\n\n

The addition of nitrogen after harvesting in the previous season was also investigated. It was found that in 60% \u00b7 the plant's nitrogen reserves at the start of the bud development are derived from the nitrogen absorbed during the post-harvest period and that 1\u20444 of the plant's nitrogen reserves are used until the end of the , flowering and until the end of the harvest 50% \u00b7 the nitrogen reserves available at the time of the , bud development were used (Conradie 1980,1991,1992c).<\/p>\n\n\n\n

Generally, three main periods of time during which nitrogen is added are used in production:<\/p>\n\n\n\n

\u2190 During the development of , buds<\/p>\n\n\n\n

after flowering and<\/p>\n\n\n\n

after harvest.<\/p>\n\n\n\n

Data collected during experimental work on the effect of application time and the amount of nitrogen added support the correctness of the above nitrogen addition times.<\/p>\n\n\n\n

* Determination of the amount of nitrogen to be added to each application is a more complex issue , but the finding that 60% the nitrogen reserves of the plant during the budding period come from what is added after harvesting highlights the importance of the applied post-harvest nitrogen fertilisation programme.<\/p>\n\n\n\n

Source: Bell S-J and P.A. Henschke , 2005. <\/strong>Implications of nitrogen nutrition for grapes , fermentation and wine. Australian Journal of Grape and Wine Research 11 , 242-295.<\/p>\n

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Nitrogen is one of the most important nutrients that plants need in order to grow adequately. Nitrates (NO3-) ... <\/p>","protected":false},"author":1,"featured_media":7546,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"_seopress_titles_title":"","_seopress_titles_desc":"","_seopress_robots_index":"","_seopress_robots_follow":"","_seopress_robots_imageindex":"","_seopress_robots_snippet":"","_seopress_robots_primary_cat":"none","_seopress_robots_breadcrumbs":"","_seopress_robots_freeze_modified_date":"","_seopress_robots_custom_modified_date":"","_seopress_robots_canonical":"","_seopress_social_fb_title":"","_seopress_social_fb_desc":"","_seopress_social_fb_img":"","_seopress_social_fb_img_attachment_id":0,"_seopress_social_fb_img_width":0,"_seopress_social_fb_img_height":0,"_seopress_social_twitter_title":"","_seopress_social_twitter_desc":"","_seopress_social_twitter_img":"","_seopress_social_twitter_img_attachment_id":0,"_seopress_social_twitter_img_width":0,"_seopress_social_twitter_img_height":0,"_seopress_redirections_value":"","_seopress_redirections_enabled":"","_seopress_redirections_enabled_regex":"","_seopress_redirections_logged_status":"both","_seopress_redirections_param":"","_seopress_redirections_type":301,"_seopress_analysis_target_kw":"","footnotes":""},"categories":[33,97,99],"tags":[40,41],"class_list":["post-7818","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-vineyard","category-ampeli_krasi","category-lipansi","tag-40","tag-41","image-hover-transition-effect"],"gutentor_comment":0,"_links":{"self":[{"href":"https:\/\/www.torosidis.gr\/en\/wp-json\/wp\/v2\/posts\/7818","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/www.torosidis.gr\/en\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/www.torosidis.gr\/en\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/www.torosidis.gr\/en\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/www.torosidis.gr\/en\/wp-json\/wp\/v2\/comments?post=7818"}],"version-history":[{"count":1,"href":"https:\/\/www.torosidis.gr\/en\/wp-json\/wp\/v2\/posts\/7818\/revisions"}],"predecessor-version":[{"id":10109,"href":"https:\/\/www.torosidis.gr\/en\/wp-json\/wp\/v2\/posts\/7818\/revisions\/10109"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/www.torosidis.gr\/en\/wp-json\/wp\/v2\/media\/7546"}],"wp:attachment":[{"href":"https:\/\/www.torosidis.gr\/en\/wp-json\/wp\/v2\/media?parent=7818"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.torosidis.gr\/en\/wp-json\/wp\/v2\/categories?post=7818"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.torosidis.gr\/en\/wp-json\/wp\/v2\/tags?post=7818"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}