studia universitatis babeÅ-bolyai biologia 2
studia universitatis babeÅ-bolyai biologia 2
studia universitatis babeÅ-bolyai biologia 2
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A. SAMUEL, S. KISS, M. ŞANDOR<br />
Maize (plot 1) (a)<br />
versus wheat (b)<br />
Maize (FYM) (a)<br />
versus clover (b)<br />
Maize (FYM) (a)<br />
versus maize<br />
(plot 4) (b)<br />
Maize (FYM) (a)<br />
versus soybean (b)<br />
Maize (FYM) (a)<br />
versus wheat (b)<br />
Clover (a) versus<br />
maize (plot 4) (b)<br />
Clover (a) versus<br />
soybean (b)<br />
Clover (a) versus<br />
wheat (b)<br />
Maize (plot 4) (a)<br />
versus soybean (b)<br />
Maize (plot 4) (a)<br />
versus wheat (b)<br />
Soybean (a) versus<br />
wheat (b)<br />
Table 3 (continued)<br />
1 2 3 4 5 6 7<br />
UPA<br />
0-60 0.2625 0.2795 -0.0170 p>0.10<br />
AcPA<br />
0.1920 0.2090 -0.0170 0.05>p>0.02<br />
AlkPA<br />
0.0627 0.0593 0.0034 p>0.10<br />
UPA<br />
AcPA<br />
AlkPA<br />
UPA<br />
AcPA<br />
AlkPA<br />
UPA<br />
AcPA<br />
AlkPA<br />
UPA<br />
AcPA<br />
AlkPA<br />
UPA<br />
AcPA<br />
AlkPA<br />
UPA<br />
AcPA<br />
AlkPA<br />
UPA<br />
AcPA<br />
AlkPA<br />
UPA<br />
AcPA<br />
AlkPA<br />
UPA<br />
AcPA<br />
AlkPA<br />
UPA<br />
AcPA<br />
AlkPA<br />
0-60 0.3318<br />
0.2370<br />
0.0733<br />
0-60 0.3318<br />
0.2370<br />
0.0733<br />
0-60 0.3318<br />
0.2370<br />
0.0733<br />
0-60 0.3318<br />
0.2370<br />
0.0733<br />
0-60 0.3322<br />
0.1792<br />
0.0613<br />
0-60 0.3322<br />
0.1792<br />
0.0613<br />
0-60 0.3322<br />
0.1792<br />
0.0613<br />
0-60 0.2505<br />
0.2102<br />
0.0670<br />
0-60 0.2505<br />
0.2102<br />
0.0670<br />
0-60 0.3400<br />
0.1788<br />
0.0603<br />
0.3322<br />
0.1792<br />
0.0613<br />
0.2505<br />
0.2102<br />
0.0670<br />
0.3400<br />
0.1788<br />
0.0603<br />
0.2795<br />
0.2090<br />
0.0593<br />
0.2505<br />
0.2102<br />
0.0670<br />
0.3400<br />
0.1788<br />
0.0603<br />
0.2795<br />
0.2090<br />
0.0593<br />
0.3400<br />
0.1788<br />
0.0603<br />
0.2795<br />
0.2090<br />
0.0593<br />
0.2795<br />
0.2090<br />
0.0593<br />
-0.0004<br />
0.0578<br />
0.0120<br />
0.0813<br />
0.0732<br />
0.0063<br />
-0.0082<br />
0.0582<br />
0.0130<br />
0.0523<br />
0.0280<br />
0.0140<br />
0.0817<br />
-0.0310<br />
-0.0057<br />
-0.0078<br />
0.0004<br />
0.0010<br />
0.0527<br />
-0.0298<br />
0.0020<br />
-0.0895<br />
0.0314<br />
0.0067<br />
-0.0290<br />
0.0012<br />
0.0077<br />
0.0605<br />
-0.0302<br />
0.0010<br />
* Expressed in mg phenol/g soil/2 hours.<br />
UPA – Phosphatase activity measured in unbuffered reaction mixtures.<br />
AcPA – Acid phosphatase activity.<br />
AlkPA – Alkaline phosphatase activity.<br />
** (FYM) – (farmyard-manured).<br />
0.02>p>0.01<br />
0.05>p>0.02<br />
0.10>p>0.05<br />
0.01>p>0.002<br />
0.02>p>0.01<br />
0.01>p>0.002<br />
0.02>p>0.01<br />
0.05>p>0.02<br />
0.05>p>0.02<br />
0.001>p>0.0001<br />
0.05>p>0.02<br />
0.05>p>0.02<br />
0.01>p>0.002<br />
0.02>p>0.01<br />
0.05>p>0.02<br />
0.05>p>0.02<br />
0.05>p>0.02<br />
0.02>p>0.01<br />
0.05>p>0.02<br />
0.01>p>0.002<br />
0.10>p>0.05<br />
0.02>p>0.01<br />
0.05>p>0.02<br />
0.01>p>0.002<br />
0.10>p>0.05<br />
0.05>p>0.02<br />
p>0.10<br />
0.05>p>0.02<br />
0.01>p>0.002<br />
0.01>p>0.002<br />
– Soil phosphatase activities as affected by the same crop in the two rotations.<br />
As maize and wheat were crops in both rotations, it was possible to compare their<br />
effect on soil phosphatase activities. The soil under both crops was more phosphataseactive<br />
in the 6- than in the 2-crop rotation. In the soil under maize, the difference<br />
between the two rotations was significant (at least at p
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