IL29311A - Phosphorus and nitrogen containing fertilizers - Google Patents

Description

stages extend over a vide period of the life cycle reac their peak at the time o the formation of the the fruit the when the phosphorus from the fertilizer is In in most cases the utilisation of supplied rus is relatively modest the corresponding increase improvement in the agricultural production are absolutely This adverse situation obviously becomes serious slower the growth of the the longer its vegetative deeper the root system of the as in the case of arboreous The present practices to favour the availability of phosphorus to the such as liming of tion of phosphate band placement of the have relativel little results of very little interest have also been obtained by the experimental application of some organic phosphates in order to retard the retrogradation and the fixation of the orthophosphoric by the The Applican has described the phosphoroxy triamide i the French patent a phosphate fertilizer displaying characteristics of and from the soil which cannot be obtained with any of the traditional phosphate b further increasing the range of the it has bee found that the mobility and independence from the soil of FTM varies remarkably one soil another and some cases it can reach unsatisfactory Another practical inconvenience of FTM is its low degre of storage stability when exposed to the The Applicant has now surprisingly found that compounds belong ing to the ollowing class following the invention but are to be construed as methoxyphosphoxydiamida g of anhydrous are added to kept at After allowing for is eliminated by bubbling dr nitroge through the The product distills at 2 with a of cc of saturated with anhydrous are slowly added to the distilled dissolved cc of anhydrous while stirring at a of After the whole is allowed to stand for about hours and the cake is washed twice cold The residue is refluxed for 2 hours with 0 cc o in 225 of after it is three cold and t ice ethyl and finally under at g of are obtained by crystallization from E 2 g o anhydrous methanol are added dropwise to 53 g of dissolved in f iept at while A allowing to stand fo 1 th solvent and HCi are by distillation unde reduced pressure 15 The last traces of are removed by the addition of a small quantity of After filtration the solution is distilled at mm 800 o saturated wit anhydrous added to the distilled product dissolved in 200 cc of anhydrous while stirring and keeping at a temperature of to stand hours v is Most or the solvent is evaporated and is The regaining portion of solvent the g of a viscous ography silica G plate noi unitary are obtained C found calculated for 3 of anhydrous while stirring at 0 to 45 o according to the method already is first under and then PbCO the solution is distilled The amide is prepared by adding a solution of according to the method previously repor of viscous which b ography on silica jnethylethylke hanol shovs a unitary spot are found calculated for 4 phosphoro The repo ed for the preparation of diamid is by operating on g of and cc distills at 18 The amide i from NH an extractor for solids wit plate f eluent containing the pure product are then the solvent at and 10 g of in the of a viscous are found calculated for These compounds substantially differ from the fertilising means till novrv due both their structure their behaviour in the The compounds included in the general formula are crystalline solid substances or soluble i As soon as they into contact the soil under sufficient moisture they and spread from the shell of the to its deepest undergoing a significant process of to which the known phosphate fertilizers are subjected In other they substantially independen from the soil so that the plant can absorb the nutrient as occasio without with the soil as said when comes into contact with the traditional phosphate tends to take hold of the nutrient element by fixing i It is clear that in the phosphate fertilization with compounds having such it is possible to obtain a better yield in th utilization of phosphorus by the crop resulting i a qualitative improvement quantitative increase in the agricultural this allows a top split wit immediate to be so as to regulate the amount of phosphate depending on the variable needs of the from foregoingit is evident that one the objects the present invention is provide readil assimilable phosphate fertilizers that are not fixed by the Another is also to provide phosphate fertilisers utrient requirements the plant be met at the of greatest a further object is to provide phosphate fertilizers particularly suitable for use to split the fundamental and consequent object is to provide adequate phosphate fertilisers to crop as compared those both quality and the In order to ascertain and demonstrate the d behaviour o the compounds according to the vit regard traditional watersoluble phosphate fertilizers and to some of penetrability on differen types of of availabil to plants The tests substantially performed according to the technique described in March and by operating vith 650 g of fine earth are arranged by shaking gently in a glass vith an inside diameter of cm and a height of closed a the bottom by a suitably bored on vhich filter paper disk is Earth is imbibed by absorption of distilled in order eliminate the empty arrange the various soil particles and then to de any mechanical transportation of the T e established of dissolved in minimum amount of is evenly distributed onto the surface keeping peripheric band of about 1 cm free for the purpose o order to avoid the direct contact of the fertilizer poured on the 8 From the data reported it appears the penetration of is confined to the surface layers of the The penetration of is higher varies from soil to The fertilizer even though to a also the amount that penetrates all the soil 3y the which the subject of the present invention penetrate the soil in a remarkably higher proportion than reaching the deepest and large of pass through all the soil Their degree of penetrability is affecte by the structure of the soil to a far lesser The analysis of the percolated liquid has also that th compounds according to the invention do not undergo any while in the percolation liquid resulting fro the application of other unidentified ing products have been found The very high mobility of the i the class in is confirmed by the results of a test carried out on a layer of compact reported in test B 32 A test on the penetrability of labelled MFD in a compact soil with a pH of was carried out by using an amount of product corresponding to kg A cm in was filled wit to a height of 49 cm and daily watered with 284 cc for 44 At the labelled phosphorus was in th percolate and found to be equivalen of that elapsed P and 178 4080 20 4 20 488 soil 14 insufficientOCRQuality

Claims (1)

1. CLAIMS at least ifferent taining agricul¬ o Claim 1 o Claim 1 o Claim 1 o Claim ¾ comprising ethoxyphosphoxydiaraide. 6» A soil fertilizer composition according to Claim ¾ comprising butoxy.phosphoxydiamide. 7» A soil fertilizer composition- according to Claim ¾ comprising 2-ethylhexoxyphosphoxydlamide. 8. Soil fertilizer compositions according to any one of the preceding claims containing the active component or components in association with other substances exerting a fertilizing and/or oligodynamic and /or pestieidal action and/or inert substances. - 17 - 29311/2 9. A method of fertilisation of the soil which comprises applying to the soil a fertilizer mixture according to any of the preceding claims or a compound having the formula given therein. 10. A jaethod of fertilisation according to claim 9 in which the application is by means of top dressing treatment, either split or hot.