Open AccessTHE VALUE OF FILTER PRESS CAKE AS A FERTILIZER FOR VEGETABLE CROPS. PRELIMINARY TRIALS WITH TOMATOES AND CUCUMBERS
Author(s) -
Arturo Riollano
Publication year - 1942
Publication title -
the journal of agriculture of the university of puerto rico/the journal of agriculture of the university of puerto rico
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.123
H-Index - 10
eISSN - 2308-1759
pISSN - 0041-994X
DOI - 10.46429/jaupr.v26i4.13589
Subject(s) - acre , fertilizer , yield (engineering) , filter cake , sugar , pound (networking) , mathematics , agronomy , recipe , horticulture , environmental science , biology , environmental engineering , food science , materials science , world wide web , computer science , metallurgy
Filter press cake, a refuse from sugar mills in Puerto Rico can be used advantageously for fertilizing tomatoes and cucumbers grown in the soil type Coto Clay No. 20. When applied at the rate of 12 tons per acre plus 1,000 pounds of fertilizer 8-10-15 it caused a significant increase in yield of marketable tomatoes amounting to 20.5 per cent over the treatment where chemical fertilizer 8-10-15 had been applied alone at the rate of 1,000 pounds per acre. When 20 tons filter press cake were applied alone and with different complete and incomplete chemical fertilizers, also significant increases in yield of cucumbers were observed. The yield with 20 tons of filter press cake alone was equivalent to the yield obtained with a complete fertilizer having 200 pounds NH3, 200 pounds P2O5and 200 pounds K2O. Results seem to indicate that the most profitable treatment would be probably 20 tons filter press cake plus 200 pounds NH3and 200 pound P2O5.