Method of supplying sulfur and nitrogen to soil

Claim 1

IN THE METHOD OF SUPPLYING FIXED NITROGEN, AND SULFUR, SIMULTANEOUSLY TO AGRICULTRUAL SOIL CY INTRODUCING AND DISSEMINATING A VOLATILE LIQUID CONTAINING FIXED NITROGEN, AND SULFUR, INTO AGRICULTURAL SOIL BENEATH ITS SURFACE BY MEANS OF APPARATUS IN WHICH THE LIQUID FLOWS THROUGH WHOLLY ENCLOSED PASSAGEWAYS OF RESTRICTED CROSS-SECTIONAL AREA, THE IMPROVEMENT WHICH AVOIDS INTERFERENCE BY SOLID MATTER WITH THE FLOW OF THE LIQUID THROUGH THE WHOLLY ENCLOSED PASSAGEWAYS OF RESTRICTED CROSS-SECTIONAL AREA IN THE APPARTUS USED TO INTRODUCE AND DISSEMINATE THE LIQUID INTO THE SOIL, SAID IMPROVEMENT COMPRISING EMPLOYING AS THE LIQUID A SOLUTION FORMED BY DISSOLVING ELEMENTAL SULFUR IN ANHYDROUS LIQUID AMMONIA, THE SULFUR AND AMMONIA EACH BEING FREE FROM CONTAMINATION BY WATER TO THE EXTENT THAT THE TOTAL AMOUNT OF WATER INTRODUCED INTO THE SOLUTION ON THEIR MIXING DOES NOT EXCEED 500 PARTS PER MILLION OF THEIR COMBINED WEIGHTS, THE PROPORTIONS OF SULFUR AND AMMONIA USED BEING SUCH THAT THE NITROGEN-TOSULFUR WEIGHT RATIO IS MAINTAINED ABOVE 2.5-TO-1, AND PASSING AND DISSEMINATING THE SOLUTION INTO SOIL BY MEANS OF APPARATUS IN WHICH THE SOLUTION FLOWS THROUGH WHOLLY ENCLOSED PASSAGEWAYS OF RESTRICTED CROSS-SECTIONAL AREA, WITHOUT SIGNIFICATNT INTERFERENCE BY SOLID MATTER, MAINTAINING THE SOLUTION FREE FROM CONTAMINATION BY MORE THAN 500 PARTS PER MILLION BY WEIGHT OF WATER UNTIL IT HAS PASSED FROM THE APPARATUS INTO THE SOIL.