Fertilizer tablet which rapidly disintegrates when watered and thereafter slowly releases its plant nutrients

Claim 1

A FERTILIZE TABLET WEIGHTING AT LEAST ONE-HALF GRAM, FOR SLOWLY FEEDING A PLANT OVER A PERIOD OF SEVERAL MONTHS, COMPRISING: A TABLETED INTIMATE MIXTURE OF SOLID PARTICLES OF THE FOLLOWING INGREDIENTS: A FERTILIZER COMPOSITION THAT IS VERY SLOWLY WATER SOLUBLE AND IS TO A LARGE EXTENT CAPABLE OF BEING BROKEN DOWN INTO WATER-SOLUBLE SUBSTANCES BY THE CONTINUED ACTION OF SOIL BACTERIA, SAID FERTILIZER COMPOSITING CONSTITUTING THE MAJOR INGREDIENT OF SAID TABLET, TALC IN THE AMOUNT OF ABOUT 2% TO 10% BY WEIGHT OF THE TABLE AS A TABLETING LUBRICANT WHICH DOES NOT INTERFER WITH WATER PENETRATION AND DISINTEGRATION OF THE TABLET, AND A TABLET DISINTEGRANT IN THE AMOUNT OF BETWEEN 1/2% AND 5% BY WEIGHT OF THE TABLET, CHOSEN FROM THE CLASS CONSISTING OF ALGINIC ACID AND ITS WATER-SOLUBLE SALTS, WHEREBY SAID TABLET ON CONTACT WITH A SPRINKLING OR IRRIGATION OF WATER DISINTEGRATES IN A TIME OF THE ORDER OF ONE MINUTE TO RENDER ITS MAJOR INGREDIENT ACCESSIBLE TO THE ACTIONS OF SUBSEQUENT WATER AND OF SOIL BACTERIA.