http://www.pda.org.uk The latest updates from the Potash Development Association - PDA. en-gb Mon, 02 Apr 2012 17:50:11 +0100 Copyright: (C) PDA, Potash Development Association http://www.pda.org.uk/image/rssLogo.jpg http://www.pda.org.uk In the spring there is understandably much talk of nitrogen applications, growth regulators and how well crops have come through the winter. It is seldom accompanied by discussion of the importance of potash on the efficiency of nitrogen utilisation, on the ability of cereal crops to resist going down, or on the resistance of the crop to abiotic stress. http://www.pda.org.uk/news/nf78.php http://www.pda.org.uk/news/nf78.php Mon, 02 Apr 2012 17:00:00 +0100 Potash News Nutrients such as nitrogen and sulphur, require skilful management. If too little is applied the crop is unlikely to achieve its potential, and if too much then unwanted losses can occur. It is important that the care devoted to the management of nitrogen does not 'drown out' the equally important but much simpler management of those nutrients which are usually well buffered in the soil store, such as phosphate and potash. No single nutrient can claim to be more important than others, although some may be more difficult to manage; all essential nutrients are just that: essential. http://www.pda.org.uk/news/nf77.php http://www.pda.org.uk/news/nf77.php Wed, 14 Dec 2011 09:26:27 +0000 Potash News Comprehensive guide to soil sampling and interpretation of soil results including indispensable reference material not found in any other single source. http://www.pda.org.uk/leaflets/24/leaflet24-1.html http://www.pda.org.uk/leaflets/24/leaflet24-1.html Wed, 30 Nov 2011 15:56:03 +0000 PDA leaflets The 2010-2011 Professional Agricultural Analysis Group (PAAG) annual UK soil analysis results report is now published on the PDA website. http://www.pda.org.uk/paag-soil-analysis.html http://www.pda.org.uk/paag-soil-analysis.html Fri, 28 Oct 2011 12:57:29 +0100 PAAG report This leaflet reviews the existing Soil Index system and examines the principles and some of the claims made for the BCSR and soil audit approach to soil nutrient management. http://www.pda.org.uk/notes/tn16.php http://www.pda.org.uk/notes/tn16.php Thu, 27 Oct 2011 12:51:29 +0100 Technical Notes Fertiliser recommendations for potash (K2O) are usually based on removal or offtake of K2O at harvest. Some detailed results of measurements on K2O uptake during crop growth show that greater care is needed to ensure potash supply meets crop requirement. The amount of a nutrient needed for full growth of a crop is larger, sometimes much larger, than the amount removed at harvest. http://www.pda.org.uk/news/nf76.php http://www.pda.org.uk/news/nf76.php Fri, 12 Aug 2011 15:35:00 +0100 Potash News Yields of first cut grass have been lower than average in many parts of the UK with yields down by as much as 30%. Some grassland farmers may have delayed cutting to allow swards to bulk up, but with dry conditions encouraging early heading, this tends to exacerbate poor quality as stem elongation rushes on apace. A poor yield and/or quality of first cut puts the pressure on the second cut to perform and make up some of the difference before winter arrives. But the temptation to cut back on potash and sulphur should be resisted as these two elements are essential to making the most out of the remainder of the grass growing season. http://www.pda.org.uk/news/nf75.php http://www.pda.org.uk/news/nf75.php Mon, 13 Jun 2011 16:35:00 +0100 Potash News The updated Fertiliser Manual (RB209) includes changes to the recommendations for cereals. For potash these relate to the reduction in the quantity of baled straw which is assumed to be removed per tonne of harvested grain, now half a tonne of straw per tonne of grain instead of 650 kg, and a small increase in the recommendation for the correction of a low soil K index. http://www.pda.org.uk/news/nf74.php http://www.pda.org.uk/news/nf74.php Wed, 23 Feb 2011 10:35:00 +0000 Potash News There is always pressure on cereal farmers to reduce costs. Basal phosphate and potash are particular targets because reductions in use that damage yield may have little or no visible effect in the short term. This leaflet provides a comprehensive review of phosphate and potash nutrition for cereals and gives detailed recommendations for optimum economic fertiliser usage. http://www.pda.org.uk/leaflets/11/no11-page1.htm http://www.pda.org.uk/leaflets/11/no11-page1.htm Wed, 23 Feb 2011 10:30:00 +0000 PDA leaflets Growing plants require far larger quantities of potash than is usually recommended as a fertiliser dressing. This may sound surprising but the fertiliser recommendation is calculated from the amount of potash removed from the field when the crop is harvested, not from the large amount needed by the crop when it is growing at its full potential. http://www.pda.org.uk/news/nf73.php http://www.pda.org.uk/news/nf73.php Mon, 13 Sep 2010 14:00:00 +0100 Potash News A guide to the total and available phosphate, potash and magnesium contents of some manures. http://www.pda.org.uk/others/npkcoam.html http://www.pda.org.uk/others/npkcoam.html Mon, 13 Sep 2010 11:40:00 +0100 PDA leaflets This updated leaflet examines the phosphate and potash removal by crops and is essential information for farmers and advisors. http://www.pda.org.uk/others/pandprbyc.html http://www.pda.org.uk/others/pandprbyc.html Mon, 13 Sep 2010 11:30:11 +0100 PDA leaflets Recent booklets and press articles in Britain have given advice on management guidelines for winter wheat and on how to avoid flat crops, but often with little mention of the fundamental need for balanced nutrition. http://www.pda.org.uk/news/nf72.php http://www.pda.org.uk/news/nf72.php Tue, 30 Mar 2010 15:06:29 +0100 Potash News The situation is rather different where minimum cultivation is practised. Here, the mixed layer of soil is shallower than the sampling depth. The soil nutrients are likely to have become more stratified with relatively higher nutrient concentrations close to the soil surface. http://www.pda.org.uk/news/nf71.php http://www.pda.org.uk/news/nf71.php Fri, 22 Jan 2010 15:16:11 +0000 Potash News Buying and applying fertiliser has a cost to the farmer - a financial cost that has increased greatly recently for nitrogen, phosphate and potash fertilisers. In turn, these increases have raised questions about 'the response' to applying phosphate and potash fertilisers in particular because frequently there is no visual response to their application. http://www.pda.org.uk/notes/tn19.php http://www.pda.org.uk/notes/tn19.php Mon, 26 Oct 2009 12:47:39 +0000 Technical Notes A selection of frequently asked questions relating to the use and application of phosphate and potash. http://www.publicnotprivate.org.uk http://www.publicnotprivate.org.uk Wed, 12 Aug 2009 12:51:51 +0100 Potash News