Gestione delle piante nelle aree verdi

EFFECT OF MULCHING TECHNIQUES AND IRRIGATION ON GROWTH AND
PHENOLOGICAL CHARACTERISTICS OF TWO GROUNDCOVER SPECIES
Frangi P.1, Ferrini F.2, Vercesi R.2, Amoroso G.1
1
Fondazione Minoprio – Centro MiRT, Viale Raimondi, 54 - 22070 Vertemate con Minoprio (CO)
2
Dipartimento di Produzione Vegetale – Università di Milano, Via Celoria, 2 – 20133, Milano
keywords: biomass, chlorophyll, mulching bark
Abstract
The influence of different management techniques on plant growth and on some phenological
characteristics was monitored on two groundcover shrubs over a two-year period after planting.
The research was carried out on Rosa hybrida and Lonicera pileata plants planted in an
experimental plot located at the Fondazione Minoprio (Como) in the North of Italy. Treatments
included: 1) mulching with pine bark; 2) mulching with black polyethylene (PE) film; 3) bare soil
with the use of herbicide. Plants were then subjected to two different irrigation regimes: a) no
irrigation; b) drip irrigation. The results showed that biomass accumulation, chlorophyll content
and phenology, were affected by soil management while irrigation did not show significant effects.
Besides, different behaviour were observed according to the species.
Introduction
Materials and Methods
1
Results and Discussion
Tab. 1 - Effect of soil management and of irrigation on leaf chlorophyll content and on growth in
Lonicera pileata (μg/cm2). I valori contrassegnati da lettere diverse differiscono per p ≤ 0.05.
Tesi
Suolo nudo
Corteccia
Telo
p-value
Irriguo
Asciutto
p-value
Clorofilla (μg/cm2)
biomassa (g)
2002
2003
2002
2003
18.45 b
20.66 b 72.38 n.s.
122.3 b
18.97 ab 22.03 a
74.74
184.55 a
20.25 a 21.27 ab
70.08
148.7 ab
0.051
0.010
0.810
0.006
Numero di rami
2002
2003
6.97 n.s. 7.42 b
7.00
10.08 a
7.83
8.17 b
0.332
0.015
Diametro piante
2002
2003
93.54 n.s 100.29n.s.
96.38
117.13
93.29
123.96
0.873
0.071
19.10 n.s
19.35
0.681
7.17 n.s. 9.00 n.s.
7.33
8.11
0.763
0.228
90.72 n.s
98.08
0.179
21.94 a
20.69 b
0.001
65.76 b
79.04 a
0.030
146.88 n.s.
156.83
0.498
2
114.56n.s.
113.03
0.885
Tab. 2 - Effect of soil management on leaf chlorophyll content, biomass production and flower
number (only 2003) in Rosa hybrida (μg/cm2). I valori contrassegnati da lettere diverse
differiscono per p ≤ 0.05.
Suolo nudo
Corteccia
Telo
p-value
Clorofilla (μg/cm2)
2002
2003
18.95 n.s. 17.03 n.s.
19.68
16.78
20.03
16.95
0.149
0.873
biomassa (g)
2002
2003
41.38 b 238.57 n.s.
50.55 b 221.80
59.29 a 185.32
0.009
0.147
Fiori (n°)
1° fioritura 2° fioritura
22.67 b
13.00 n.s.
25.33 b
13.63
37.10 a
13.50
0.000
0.893
Irriguo
Asciutto
p-value
18.70 b
20.41 a
0.001
45.18 b
55.63 a
0.025
32.40 a
24.33 b
0.000
Tesi
16.47 b
17.37 a
0.028
188.73 b
241.74 a
0.022
Fig. 1 -………………………………………………….
Fig. 2 - ……………………………
3
13.98 n.s.
12.78
0.298
Conclusions
Aknowledgements
Sperimentazione effettuata con finanziamento della Regione Lombardia – D. G. Agricoltura:
“Progetto di Sperimentazione Regionale sul Florovivaismo” (d.g.r. n. 7/13077 del 23.05 2003).
Bibliografia
1. Carlson C.R., 2000. Mulching basics: are you covered? Grounds Maintenance, Nov. 2000
2. Gleason M.L., Iles J.K., 1998. Mulch matters. Amer. Nurs., Febr 15th:24-28.
3. Harris R.W, Clark J.R., Matheny N.P., 2004. Arboriculture, 4rd Ed.. Prentice Hall Inc., New
Jersey.
4. Margotti A., 2000. Irrigazione e risparmio idrico nel verde pubblico. Riv. Irr. Dren., 47(3):3-6.
5. Rakow D.A., 1992. The types and the uses of mulch in the landscape. Cornell Coop. Ext.
Factsheet page 700.10.
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