Presentacion Ensayo Netafim; Brazil

Project: CATV* - Netafim

May, 2011
Brazil
* Compañia Azucarera Tres Valles, Honduras, Centro America

Rodolfo A. Flores

Introduction
• Compañia Azucarera Tres Valles, is located in Honduras,
Central America, into the ecologic formation of bms-T
(tropical very dry forest) , with an annual precipitation of 800
mm and evaporation rate of 1100 mm.

Introduction
• Compañia AzucareraTres Valles, have about
90% of its area below drip irrigation systems,
that is why the most interest research is that
kind of system.
• The Project was establish with four
experimental trials in automatic irrigation
system.
• Results are from two years of evaluation. (2009,
2010)

Generalities of the project
CATV- Netafim
• Evaluation of distance between dripline
– 1.8 m vs 2.4 m
•Varieties

• Flow rate of drippers
– 0.6 vs 1.0 L/H

• Depth of water (using Evapotranspiration)
– 50%, 80%, 100%, 120%

• Fertilization (relations of N:K)
– 1:1, 1.5:1.5, 1:1.5 y 1:2

Project Design
DW 2.4 1.8 1.8
F 2.4

PS

2.4 F

F

C

F

2.4 1.8 DW 2.4 2.4 1.8

1.8 2.4 1.8 1.8 FR DW 1.8 DW 2.4 2.4

1.8 FR

FR 2.4 DW DW 2.4 1.8 C

2.4 2.4 1.8 DW 2.4 1.8 1.8 DWF
DW FR

C

F

1.8

F

2.4 1.8 1.8 2.4

C Control
DW Depth of Water
1.8 1.8 m distance between dripline
2.4 2.4 m distance between dripline
FR Flow rate of drippers
F Fertilization
PS pump station

2.4 1.8
F

2.4 FR
F

C

F

1.8 FR 2.4 DW

2.4 DW 1.8 2.4 FR

F

1.8 1.8 2.4 2.4 DW F

2.4 1.8

F

FR DW C

FR 2.4

1.8 2.4

2.4 FR DW 2.4 2.4

F

F1.8 2.4 DW 1.8

Stadistic design: Randomized Complete

Block, 20 plots, 5 replicants (Experimental

2

2

Unit = 1.8 m (324 m ) and 2.4 m (432m ))

Generalities
• Fertigation
• Double line of cane system

Materials y Methods

Dripnet PC
16125 1.0 LH x
0.50 M

Trial 1: Flow rate of drippers
•0.6 L/Hr and 1.0 L/Hr Control (used in CATV)
In 1.8 m and 2.4 m distancebetween drip line
Distance
Treatment
Control

Flow rate of

between

drippers

dripline (m) (L/Hr)
1.8
1
1.8
2
2.4
3
2.4

1.0
0.6
1.0
0.6

Generality of managemente
• Variety Canal Point 72-2086
• Depth of water in cycle of cane 2009 was 765
mm/year and 2010 was 211 mm/year
• Fertilization equal
kilograms/Metric Ton
N P2O5 K2O
S
1.23 0.45 1.23 0.32

Flow rate ofdrippers

Distance
between

Treatment
Control

Flow rate of
drippers

dripline (m) (L/Hr)
1.8
1
1.8
2
2.4
3
2.4

Treatment
Control
1
2
3

Metric Ton/ Hectare
2009
2010
148.9 a
164.9 a
141.3 a
152.2 ab
132.5 a
145.1 ab
128.2 a
133.8 b

1.0
0.6
1.0
0.6

Trial 2: Distance between Drip
line 1.8 m vs. 2.4 m
Generalities:
Commercial varieties CATV
Flow rateof drippers (1.0 L/Hr)
Depth of water in 2009 was 765 mm/year
and 2010 was 211 mm/year.
equal Fertilization

Distance between Dripline 1.8 m vs 2.4 m

Trial 3: Varieties in 1.8 m of
distance between dripline
Generalities:
Flow rate of drippers (1.0 L/Hr)
Depth of water in 2009 was 765 mm/year and
2010 was 211 mm/year.
equal Fertilization

CP: 72-2086
CB: 38-22
Mex :69-290
Mex:79-431
CP: 80-1547
CP: 72-1210

Varieties in 1.8 m of distance between dripline

Metric ton/Hectare
Treatment
2009
2010
CB 38 22
185.2 a 186.0 a
CP 72 1210 131.0 b 141.1 c
CP 72 2086 148.9 b 164.8 abc
CP 80 1557 140.1 b 169.7 ab
MEX 69 290 133.5 b 147.2 bc
MEX 79 431 142.4 b 159.6 abc

Treatment
CB 38 22
CP 72 1210
CP 72 2086
CP 80 1557
MEX 69 290
MEX 79 431

TreatmentCB 38 22
CP 72 1210
CP 72 2086
CP 80 1557
MEX 69 290
MEX 79 431

Kilogran of Sugar/Metric Ton
2009
2010
120.4 b
120.0 b
136.1 a
132.6 a
131.3 ab 133.9 ab
121.1 b
120.8 ab
127.3 ab 129.3 ab
133.5 b
127.1 ab

Metric ton/Hectare
2009
2010
22.3 a
22.3 a
17.8 ab 18.7 a
19.6 ab 22.1 a
17.0 b
20.5 a
17.0 b
19.0 a
19.0 ab 20.3 a

Trial: Percent Depth of water
Depth of...