{"id":368,"date":"2023-02-22T11:01:21","date_gmt":"2023-02-22T11:01:21","guid":{"rendered":"https:\/\/danubagarden.hu\/?post_type=product&#038;p=368"},"modified":"2026-09-16T14:26:48","modified_gmt":"2026-09-16T12:26:48","slug":"blackjak","status":"publish","type":"product","link":"https:\/\/danubagarden.hu\/en\/termek\/blackjak\/","title":{"rendered":"Blackjak"},"content":{"rendered":"<div class=\"page\" title=\"Page 12\">\n<div class=\"section\">\n<div class=\"layoutArea\">\n<div class=\"column\">\n<p><em><strong>Our product will have a minimal additional effect when applied to good quality soil, if you are not sure if you need to use Blackjak ask our horticultural experts.\u00a0<\/strong><\/em><\/p>\n<h3><strong>Storage of the product<\/strong><\/h3>\n<p>It retains its quality for at least 36 months when stored in its original packaging at temperatures between 5 and 30 \u00b0C. Once opened, it should be used as soon as possible; however, if tightly resealed and stored in a cool, frost-free place, it can be used for up to 6 months without any loss of quality.<\/p>\n<\/div>\n<\/div>\n<\/div>\n<\/div>\n<p>&nbsp;<\/p>\n<h3><b>Detailed description<\/b><\/h3>\n<p><span style=\"font-weight: 400\">By bringing the humic substances in Blackjak to the roots of your plants, it can significantly increase water and nutrient uptake and improve soil quality. Applied Blackjack can provide the ideal soil conditions for the crop's roots in its environment, even if the soil is otherwise poorly supplied with organic matter and nutrients or has a poor pH! So its use in poor soils is almost obligatory!<\/span><\/p>\n<p>&nbsp;<\/p>\n<p><a href=\"http:\/\/danubagarden.hu\/wp-content\/uploads\/Kepernyofoto-2024-03-07-8.57.37.png\"><img fetchpriority=\"high\" decoding=\"async\" class=\"aligncenter wp-image-3966\" src=\"http:\/\/danubagarden.hu\/wp-content\/uploads\/Kepernyofoto-2024-03-07-8.57.37.png\" alt=\"\" width=\"482\" height=\"370\" srcset=\"https:\/\/danubagarden.hu\/wp-content\/uploads\/Kepernyofoto-2024-03-07-8.57.37.png 1222w, https:\/\/danubagarden.hu\/wp-content\/uploads\/Kepernyofoto-2024-03-07-8.57.37-300x230.png 300w, https:\/\/danubagarden.hu\/wp-content\/uploads\/Kepernyofoto-2024-03-07-8.57.37-1024x786.png 1024w, https:\/\/danubagarden.hu\/wp-content\/uploads\/Kepernyofoto-2024-03-07-8.57.37-768x590.png 768w, https:\/\/danubagarden.hu\/wp-content\/uploads\/Kepernyofoto-2024-03-07-8.57.37-600x461.png 600w\" sizes=\"(max-width: 482px) 100vw, 482px\" \/><\/a><\/p>\n<div class=\"page\" title=\"Page 10\">\n<div class=\"section\">\n<div class=\"layoutArea\">\n<div class=\"column\">\n<p>&nbsp;<\/p>\n<\/div>\n<\/div>\n<\/div>\n<\/div>\n<h4><strong>\ud83d\udc9a What is it good for?<\/strong><\/h4>\n<p>Blackjack can also be used to treat foliage and soil at a dose of 1-2 dl\/10 litres of water. The product has a black colour that disappears from foliage in a few days, but care should be taken when treating it on pavement or white walls as it can cause discolouration. The product must be shaken before use as it will settle on the walls and bottom of the bottle. For this very reason, it is a good idea to rinse the watering can or sprayer several times to ensure that not a drop of product is wasted.<\/p>\n<p>&nbsp;<\/p>\n<div class=\"page\" title=\"Page 1\">\n<div class=\"section\">\n<div class=\"layoutArea\">\n<div class=\"column\">\n<h4><strong>\ud83c\udf31 What does Blackjak contain?\u00a0<\/strong><\/h4>\n<\/div>\n<\/div>\n<div class=\"layoutArea\">\n<div class=\"column\">\n<ul>\n<li>min. 28% organic matter<\/li>\n<li>min. 20% natural humic substances<\/li>\n<\/ul>\n<\/div>\n<div class=\"column\">\n<p>It contains at least 28% of organic matter, of which at least 20% are natural humic substances (humic, fulvic, ulmic acids and humic substances).<\/p>\n<p>Blackjak is the only product on the market with a pH of between 4 and 5, which makes it far more effective than other products that use sodium or potassium hydroxide (alkaline) extractants.<\/p>\n<p>&nbsp;<\/p>\n<\/div>\n<\/div>\n<p><a href=\"http:\/\/danubagarden.hu\/wp-content\/uploads\/Kepernyofoto-2024-02-15-16.47.02.png\"><img decoding=\"async\" class=\"aligncenter wp-image-3600 size-full\" src=\"http:\/\/danubagarden.hu\/wp-content\/uploads\/Kepernyofoto-2024-02-15-16.47.02.png\" alt=\"\" width=\"204\" height=\"378\" srcset=\"https:\/\/danubagarden.hu\/wp-content\/uploads\/Kepernyofoto-2024-02-15-16.47.02.png 204w, https:\/\/danubagarden.hu\/wp-content\/uploads\/Kepernyofoto-2024-02-15-16.47.02-162x300.png 162w\" sizes=\"(max-width: 204px) 100vw, 204px\" \/><\/a><\/p>\n<div class=\"page\" title=\"Page 10\">\n<div class=\"section\">\n<div class=\"layoutArea\">\n<div class=\"column\">\n<p style=\"text-align: center\">Blackjak is a strong black colour, very soluble in water, but the bottle should always be shaken thoroughly and rinsed several times before use because it is a suspension (solid particles suspended in liquid).<\/p>\n<p>&nbsp;<\/p>\n<\/div>\n<\/div>\n<\/div>\n<\/div>\n<div class=\"layoutArea\">\n<div class=\"column\">\n<div class=\"page\" title=\"Page 1\">\n<div class=\"section\">\n<div class=\"layoutArea\">\n<div class=\"column\">\n<h4><strong>\ud83c\udf31 How does Blackjack help plants and soil?<\/strong><\/h4>\n<\/div>\n<\/div>\n<div class=\"layoutArea\">\n<div class=\"column\">\n<p>By adding humus to the soil in Blackjak, it can significantly increase water and nutrient uptake and improve soil quality. Applied Blackjak can provide the ideal soil conditions for the plant root in its environment, even if the soil is otherwise poorly supplied with organic matter, nutrients or has a less than ideal pH!<\/p>\n<p>&nbsp;<\/p>\n<\/div>\n<\/div>\n<\/div>\n<\/div>\n<\/div>\n<\/div>\n<\/div>\n<\/div>\n<p><a href=\"http:\/\/danubagarden.hu\/wp-content\/uploads\/magasagyas-markus-spiske-skcx86RrvxY-unsplash.jpg\"><img decoding=\"async\" class=\"aligncenter wp-image-2987\" src=\"http:\/\/danubagarden.hu\/wp-content\/uploads\/magasagyas-markus-spiske-skcx86RrvxY-unsplash.jpg\" alt=\"\" width=\"360\" height=\"435\" srcset=\"https:\/\/danubagarden.hu\/wp-content\/uploads\/magasagyas-markus-spiske-skcx86RrvxY-unsplash.jpg 1600w, https:\/\/danubagarden.hu\/wp-content\/uploads\/magasagyas-markus-spiske-skcx86RrvxY-unsplash-249x300.jpg 249w, https:\/\/danubagarden.hu\/wp-content\/uploads\/magasagyas-markus-spiske-skcx86RrvxY-unsplash-848x1024.jpg 848w, https:\/\/danubagarden.hu\/wp-content\/uploads\/magasagyas-markus-spiske-skcx86RrvxY-unsplash-768x927.jpg 768w, https:\/\/danubagarden.hu\/wp-content\/uploads\/magasagyas-markus-spiske-skcx86RrvxY-unsplash-1273x1536.jpg 1273w, https:\/\/danubagarden.hu\/wp-content\/uploads\/magasagyas-markus-spiske-skcx86RrvxY-unsplash-600x724.jpg 600w\" sizes=\"(max-width: 360px) 100vw, 360px\" \/><\/a><\/p>\n<p>&nbsp;<\/p>\n<p>&nbsp;<\/p>\n<h3><strong>\ud83c\udf33 Blackjack as a biostimulant on the foliage!<\/strong><\/h3>\n<p class=\"ql-align-justify\">The benefits of Blackjak released on the canopy are:<\/p>\n<ul>\n<li class=\"ql-align-justify\">the small molecules of fulvic acid contained in it easily penetrate the leaf. In fact, if other substances are added, such as foliar fertiliser or an absorbable pesticide, they will be absorbed more quickly<\/li>\n<li class=\"ql-align-justify\">when applied on the Blackjak canopy, it increases the plant's uptake of nutrients. As this increases the concentration of nutrients in the plant, it has a sucking effect on the water in the soil. This triggers a nutrient and water pump from the soil and into the plant! This in turn results in a larger plant mass<\/li>\n<li class=\"ql-align-justify\">the result of this water pump effect is more intense evaporation, which cools the plant! This cooling of a few degrees results in the plant continuing to photosynthesize and build up its biomass<\/li>\n<\/ul>\n<p class=\"ql-align-justify\">Almost all commercially available humus products have a pH above 7. Humus acids are, as the name suggests, effective in the mildly acidic range. Blackjack has a pH of between 4 and 5, which is ideal for its utilisation, and is also ideal when applied to the plant's canopy in conjunction with pesticides. The best quality humus is named after the American geologist researcher Professor A. G. Leonard. These Leonardite materials are formed over 10 million years and are mined in very few places in the world for their high quality. All Danuba's hummus-containing products are Leonardite-based!<\/p>\n<p>&nbsp;<\/p>\n<h3><b>\ud83e\udd14 Did you know?<\/b><\/h3>\n<p><span style=\"font-weight: 400\">The highest quality organic matter in soil is humus, which acts as a sponge to bind nutrients and water, and provides habitat and food for beneficial soil bacteria and fungi. The best quality humus is named after its researcher, Professor Leonard. <\/span><\/p>\n<h3><strong>\u26a1\ufe0f What is Leonardit?\u00a0<\/strong><\/h3>\n<div class=\"page\" title=\"Page 1\">\n<div class=\"section\">\n<div class=\"layoutArea\">\n<div class=\"column\">\n<p>The best quality humic substance is named after its researcher, Professor Leonard. These Leonardite materials form over 10 million years and are mined in very few places in the world.s<\/p>\n<p>Danuba's products containing humic substances are all Leonardite based!<\/p>\n<p>&nbsp;<\/p>\n<\/div>\n<h3><strong>Blackjack and the nutrients<\/strong><\/h3>\n<div class=\"column\">\n<p><a href=\"http:\/\/danubagarden.hu\/wp-content\/uploads\/Kepernyofoto-2024-02-15-16.43.56.png\"><img loading=\"lazy\" decoding=\"async\" class=\"aligncenter wp-image-3599\" src=\"http:\/\/danubagarden.hu\/wp-content\/uploads\/Kepernyofoto-2024-02-15-16.43.56.png\" alt=\"\" width=\"375\" height=\"487\" srcset=\"https:\/\/danubagarden.hu\/wp-content\/uploads\/Kepernyofoto-2024-02-15-16.43.56.png 408w, https:\/\/danubagarden.hu\/wp-content\/uploads\/Kepernyofoto-2024-02-15-16.43.56-231x300.png 231w\" sizes=\"(max-width: 375px) 100vw, 375px\" \/><\/a><\/p>\n<div class=\"page\" title=\"Page 10\">\n<div class=\"section\">\n<div class=\"layoutArea\">\n<div class=\"column\">\n<p style=\"text-align: center\"><strong>According to the University of Padua, Blackjack can increase the uptake of all nutrients.<\/strong><\/p>\n<\/div>\n<\/div>\n<\/div>\n<\/div>\n<\/div>\n<p>&nbsp;<\/p>\n<\/div>\n<div class=\"layoutArea\">\n<p>&nbsp;<\/p>\n<\/div>\n<\/div>\n<\/div>\n<p>&nbsp;<\/p>","protected":false},"excerpt":{"rendered":"<p><b>Dose: 2 dl\/10 litre of spray<\/b><\/p>\n<p><b>How does Blackjack with hops help?<\/b><\/p>\n<ol>\n<li style=\"font-weight: 400\"><span style=\"font-weight: 400\">Humic substances in blackjack improves soil quality<\/span><\/li>\n<li style=\"font-weight: 400\"><span style=\"font-weight: 400\">Helps the roots of the plant to absorb more water and nutrients<\/span><\/li>\n<li style=\"font-weight: 400\"><span style=\"font-weight: 400\">The advantage of Blackjak over other similar products is that it is not dissolved with an alkaline substance such as sodium\/potassium hydroxide to make it water soluble, but is shredded to a fine size of about 4 microns in a shredding roller with diamond hardness knives<\/span><\/li>\n<\/ol>\n<p><span style=\"font-weight: 400\">Leonardite is similar to brown and black coal. It is also mined in a similar way. Good quality Leonardite is found in the USA, Canada and Australia. But, just as the Earth's supply of coal is finite, so is the supply of Leonardite.<\/span><\/p>\n<div class=\"page\" title=\"Page 12\">\n<div class=\"section\">\n<div class=\"layoutArea\">\n<div class=\"column\">\n<p><strong>How to apply?<\/strong><\/p>\n<p>The product should be diluted to a concentration of 1-2%; in other words, 1\u20132 dl of Blackjak is required per 10 L of spray solution. It is advisable to repeat the treatment every 2\u20133 weeks. If Blackjak is applied to the leaves, bear in mind that it will form tiny black spots, which will disappear later. If you wish to improve degraded soil, a higher dose should be applied, up to 1 litre per 10 m\u00b2.<\/p>\n<\/div>\n<\/div>\n<\/div>\n<\/div>\n<p>&nbsp;<\/p>\n<p><strong>Scroll down and read on \u2b07\ufe0f<\/strong><\/p>","protected":false},"featured_media":372,"template":"","meta":{"footnotes":""},"product_brand":[],"product_cat":[28],"product_tag":[45,90,766,43],"stickerek-es-engedelyek":[633,714],"termek-besorolas":[529],"problema":[82,86],"class_list":["post-368","product","type-product","status-publish","has-post-thumbnail","product_cat-humusz","product_tag-100-organikus","product_tag-eu-no-1-humusz-termeke","product_tag-talajjavitas","product_tag-vegyszermentes","pa_urtartalom-02-l","pa_urtartalom-1-l","pa_urtartalom-20-l","pa_urtartalom-5-l","stickerek-es-engedelyek-biokontrol","stickerek-es-engedelyek-fibl","termek-besorolas-alap","problema-maximalis-gyokeresites","problema-talaj-vitalitas-novelese","member-discount","discount-restricted","first","instock","featured","taxable","shipping-taxable","purchasable","product-type-variable"],"bundled_by":["16223"],"bundle_stock_status":"instock","bundle_stock_quantity":null,"bundle_virtual":false,"bundle_layout":"","bundle_add_to_cart_form_location":"","bundle_editable_in_cart":false,"bundle_sold_individually_context":"","bundle_item_grouping":"","bundle_min_size":"","bundle_max_size":"","bundle_price":[],"bundled_items":[],"bundle_sell_ids":[],"yoast_head":"<!-- This site is optimized with the Yoast SEO Premium plugin v28.4 (Yoast SEO v28.4) - 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