The Influence of Form and Rate on the Efficacy of Matrix-Based Fertilizers to Reduce Nutrient Leaching
Table 1
Chemical compounds used to comprise three different matrix-based fertilizers in experiment 1 fertilizer form(a).
Treatment
1
2
3
4
5
6
7
8
9
10
Compound
CONT
SRF
MBF4
MBF5
SRF
MBF4
MBF5
SRF
MBF4
MBF5
Fertilizer Form
Banded
Broadcast
Pellet
g compound in each column
NH4 NO3
0.000
0.210
0.000
0.000
0.126
0.000
0.000
0.126
0.000
0.000
P2O5
0.000
0.200
0.000
0.000
0.120
0.000
0.000
0.120
0.000
0.000
K2O
0.000
0.180
0.180
0.180
0.108
0.180
0.180
0.108
0.180
0.180
Ca(NO3)2 4H2O
0.000
0.000
0.472
0.236
0.000
0.472
0.236
0.000
0.472
0.236
Al(NO3)3 9H2O
0.000
0.000
0.750
0.000
0.000
0.750
0.000
0.000
0.750
0.000
NH4(H2PO4)
0.000
0.000
0.230
0.115
0.000
0.230
0.115
0.000
0.230
0.115
Ca(H2PO4)2
0.000
0.000
0.468
0.234
0.000
0.468
0.234
0.000
0.468
0.234
Fe(P2O7)
0.000
0.000
0.334
0.750
0.000
0.334
0.750
0.000
0.334
0.750
Al2(PO4)3
0.000
0.000
0.360
0.000
0.000
0.360
0.000
0.000
0.360
0.000
Al2(SO4)3 18H2O
0.000
0.000
0.366
0.000
0.000
0.366
0.000
0.000
0.366
0.000
Fe2(SO4)3 3H2O
0.000
0.000
0.800
1.600
0.000
0.800
1.600
0.000
0.800
1.600
Starch
0.000
0.000
1.000
1.000
0.000
1.000
1.000
0.000
1.000
1.000
Chitosan
0.000
0.000
1.000
1.000
0.000
1.000
1.000
0.000
1.000
1.000
Lignin
0.000
0.000
1.000
1.000
0.000
1.000
1.000
0.000
1.000
1.000
MBF4 is matrix-based fertilizer formulation 1 = 243 kg N ha−1 and 262 kg P ha−1; MBF5 is matrix-based fertilizer formulation 3 = 121 kg N ha−1 and 236 kg P ha−1. SRF is the slow release fertilizer 5.0 g of Osmocote (14-14-14) = 267 kg N ha−1, 255 kg P ha−1, and 159 kg K ha−1.
