citrillus lanatus agriculture, forestry &...

2
2013 Printed and published by: Department of Agriculture, Forestry and Fisheries Directorate: Communication Services Private Bag X144 PRETORIA 0001 agriculture, forestry & fisheries Department: Agriculture, Forestry and Fisheries REPUBLIC OF SOUTH AFRICA Further information can be obtained from: Directorate: Plant Production Private Bag X250 PRETORIA 0001 Tel. 12 319 6072 Fax 12 319 6372 E-mail [email protected] into a thick vegetative cover over the soil surface, attained in 6 to 8 weeks after sowing. The movement in the crop should then be reduced to prevent plant damage. Pest and disease control The most common pest of bitter watermelon is aphids. The crop is affected by various diseases and the most common among others, are fusarium wilt, mosaic viruses, bacterial rind necrosis and root knot nematode. A proper crop rotation, use of correct volumes of fungicide and resistant cultivar can assist in the control of these pests. It is also reported that by watering at the base of the plants instead of using overhead sprinklers, diseases can be prevented. Harvesting Bitter watermelon reaches maturity within 75 to 95 days after planting. Hand picking is mostly preferred to avoid breakage and damage to the melons. Uses The tender leaves and fruit are cooked as a green vegetable. Fruit flesh may be cooked as porridge with maize meal. The fruit are traditionally used for mak- ing jam. Roasted seeds are edible. It is also used as animal feed. References Botha, R. 2005. Citrullus lanatus. Accessed 22 October 2012. http://ecoport.org/ep. National Research Council. Lost Crops of Africa: Volume III. Fruits (2008). Development, Security, and Cooperation (DSC). National Academy of Sciences. Van Wyk, B.E, & Gericke, N. 2000. People’s plants: a guide to useful plants of Southern Africa. Pretoria: Briza. Van Rensburg, W.S.J., van Averbeke, W., Beletse, Y.G & Slabbert, M.M. 2012. Bitter watermelon (Citrillus lanatus subsp, lanatus): Production guidelines for African leafy veg- etables. Water Research Commission: p. 31–32. Scientific name: Citrillus lanatus (Thunberg) Family: Cucurbitaceae Common names: Tsamma melon, wild watermelon, bitterboela, bitterwaatlemoen, karkoer, tsamma, makataan, ibotola Welman, M. 2011. S A National Biodiversity Institute. National Herbarium, Pretoria. Accessed 15 October 2012 from http://www.plantzafrica.com/plantcd/citrullanat.htm.

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2013

Prin

ted

and

publ

ishe

d by

:

D

epar

tmen

t of A

gric

ultu

re, F

ores

try a

nd F

ishe

ries

Dire

ctor

ate:

Com

mun

icat

ion

Ser

vice

s

P

rivat

e B

ag X

144

PR

ETO

RIA

0001

agric

ultu

re,

fore

stry

& fi

sher

ies

Dep

artm

ent:

Agric

ultu

re, F

ores

try a

nd F

ishe

ries

REP

UB

LIC

OF

SOU

TH A

FRIC

A

Fur

ther

info

rmat

ion

can

be o

btai

ned

from

:

Dire

ctor

ate:

Pla

nt P

rodu

ctio

nP

rivat

e B

ag X

250

PR

ET

OR

IA 0

001

Tel

. 12

319

607

2F

ax

12 3

19 6

372

E-m

ail T

habo

.Ram

asha

la@

daff.

gov.

za

into

a t

hic

k ve

ge

tativ

e c

ove

r o

ver

the

so

il su

rfa

ce,

atta

ined

in 6

to 8

wee

ks a

fter

sow

ing.

The

mov

emen

t in

the

cro

p sh

ould

the

n be

red

uced

to

prev

ent

plan

t da

mag

e.

Pes

t and

dis

ease

con

trol

Th

e m

ost

co

mm

on

pe

st o

f b

itte

r w

ate

rme

lon

is

ap

hid

s. T

he

cro

p i

s a

ffe

cte

d b

y va

rio

us

dis

ea

ses

and

the

mos

t co

mm

on a

mon

g ot

hers

, ar

e fu

sari

um

wilt

, mos

aic

viru

ses,

bac

teria

l rin

d ne

cros

is a

nd r

oot

knot

nem

atod

e. A

pro

per

crop

rot

atio

n, u

se o

f cor

rect

vo

lum

es o

f fun

gici

de a

nd r

esis

tant

cul

tivar

can

ass

ist

in t

he c

ontr

ol o

f th

ese

pest

s. I

t is

als

o re

port

ed t

hat

by w

ater

ing

at th

e ba

se o

f the

pla

nts

inst

ead

of u

sing

ov

erhe

ad s

prin

kler

s, d

isea

ses

can

be p

reve

nted

.

Har

vest

ing

Bitt

er

wa

term

elo

n r

ea

che

s m

atu

rity

with

in 7

5 t

o 9

5 da

ys a

fter

plan

ting.

Han

d pi

ckin

g is

mos

tly p

refe

rred

to

avo

id b

reak

age

and

dam

age

to th

e m

elon

s.

Use

s

Th

e t

en

de

r le

ave

s a

nd

fru

it a

re c

oo

ked

as

a g

ree

n ve

geta

ble.

Fru

it fle

sh m

ay b

e co

oked

as

porr

idge

with

m

aize

mea

l. T

he fr

uit a

re tr

aditi

onal

ly u

sed

for

mak

-in

g ja

m. R

oast

ed s

eeds

are

edi

ble.

It is

als

o us

ed a

s an

imal

feed

.

Ref

eren

ces

Bo

tha

, R

. 2

00

5.

Citr

ullu

s la

na

tus.

Acc

ess

ed

22

Oct

ob

er

2012

. http

://ec

opor

t.org

/ep.

Nat

iona

l Res

earc

h C

ounc

il. L

ost

Cro

ps o

f A

fric

a:

Vol

ume

III.

Fru

its (

2008

). D

evel

opm

ent,

Sec

urity

, an

d C

oope

ratio

n (D

SC

). N

atio

nal A

cade

my

of S

cien

ces.

Van

Wyk

, B.E

, & G

eric

ke, N

. 200

0. P

eopl

e’s

plan

ts: a

gui

de

to u

sefu

l pla

nts

of S

outh

ern

Afr

ica.

Pre

toria

: B

riza.

Van

Ren

sbur

g, W

.S.J

., v

an A

verb

eke,

W.,

Bel

etse

, Y

.G &

S

lab

be

rt,

M.M

. 2

01

2.

Bitt

er

wa

term

elo

n (

Citr

illu

s la

na

tus

subs

p, la

natu

s): P

rodu

ctio

n gu

idel

ines

for

Afr

ican

leaf

y ve

g-et

able

s. W

ater

Res

earc

h C

omm

issi

on: p

. 31–

32.

Sci

entif

ic n

ame:

C

itrill

us la

natu

s (T

hunb

erg)

Fam

ily:

Cuc

urbi

tace

ae

Com

mon

nam

es:

Tsa

mm

a m

elon

, wild

wat

erm

elon

,

bi

tterb

oela

, bitt

erw

aatle

moe

n,

ka

rkoe

r, ts

amm

a, m

akat

aan,

ibot

ola

We

lma

n,

M.

20

11

. S

A N

ati

on

al

Bio

div

ers

ity

Inst

itu

te.

Nat

iona

l Her

bari

um,

Pre

tori

a. A

cces

sed

15 O

ctob

er 2

012

from

http

://w

ww

.pla

ntza

fric

a.co

m/p

lant

cd/c

itrul

lana

t.htm

.

Clim

ate

and

so

il re

qu

irem

ents

Tem

pera

ture

Ge

ne

rally

, a

lo

ng

pe

rio

d o

f w

arm

, p

refe

rab

ly d

ry

we

ath

er,

with

ab

un

da

nt

sun

shin

e is

re

qu

ire

d.

It is

fr

ost s

ensi

tive

and

requ

ires

tem

pera

ture

s of

27

°C.

Rai

nfal

l

In th

e K

alah

ari r

egio

n, ts

amm

a m

elon

s re

quire

400

to

650

mm

of r

ain

a ye

ar. A

see

d ty

pe o

f drie

r cl

imat

es

req

uir

es

less

wa

ter

tha

n W

est

Afr

ica

n s

ee

d t

ype

s,

whi

ch r

equi

re a

n av

erag

e an

nual

rai

nfal

l of

at le

ast

700

to 1

000

mm

. It d

oes

not t

oler

ate

wat

erlo

ggin

g.

Soi

l

Bitt

er w

ater

mel

on p

refe

rs lo

ose,

san

dy a

nd w

ell-f

erti-

lised

soi

l. T

he c

rop

does

bes

t on

a ric

h, s

andy

loam

, al

thou

gh it

will

gro

w in

mos

t so

il ty

pes

prov

ided

tha

t th

e so

il is

wel

l dra

ined

. It a

lso

grow

s be

st a

t a s

oil p

H

of 5

,6 to

7,0

, but

will

als

o to

lera

te a

pH

as

low

as

5,0.

Cu

ltiv

atio

n p

ract

ices

Pro

paga

tion

Bitt

er w

ater

mel

on is

pro

paga

ted

thro

ugh

seed

.

Soi

l pre

para

tion

Min

imal

soi

l pre

para

tion

is n

eede

d on

e m

onth

bef

ore

plan

ting;

the

field

sho

uld

be d

eepl

y pl

ough

ed a

nd a

l-lo

wed

to

sett

le.

The

fie

ld s

houl

d be

rel

ativ

ely

free

of

ston

es. L

evel

ling

may

be

need

ed fo

r fu

rrow

irrig

atio

n.

Ra

ise

d b

ed

s (1

0 t

o 5

0 c

m h

igh

) im

pro

ve d

rain

ag

e,

mo

dify

te

mp

era

ture

an

d in

cre

ase

th

e d

ep

th o

f th

e ro

otin

g zo

ne.

Pla

ntin

g

Bitt

er

wa

term

elo

ns

are

usu

ally

pla

nte

d in

hill

s o

f 2

pla

nts

, sp

ace

d 5

0 c

m b

etw

ee

n p

lan

ts a

nd

2 t

o 3

m

betw

een

row

s w

hen

only

mel

ons

are

plan

ted

to g

ive

the

plan

ts p

lent

y of

roo

m to

gro

w, g

ood

air

circ

ulat

ion

and

spac

e fo

r po

llina

tors

to w

ork.

Fer

tilis

atio

n

Bitt

er

wa

term

elo

n r

esp

on

ds

we

ll to

fe

rtili

sers

, e

s-p

eci

ally

to

org

an

ic m

att

er.

Th

e v

olu

me

re

qu

ire

d de

pend

s on

the

nutr

ient

sta

tus

of th

e so

il. In

gen

eral

, ap

plic

atio

n at

a r

ate

of 2

0 to

30

t/ha

orga

nic

man

ure,

50

to 6

0 kg

N, 1

0 to

15 k

g P

and

20

to 3

0 kg

K p

er h

a is

sui

tabl

e fo

r goo

d pe

rfor

man

ce. U

sing

a h

oe, o

pen

a fu

rrow

and

app

ly th

e fe

rtili

ser

mix

ture

in th

e bo

ttom

of

the

furr

ow a

t a r

ate

of 4

0 g/

m. A

nor

mal

-siz

ed te

acup

ta

kes

abou

t 200

gra

m c

hem

ical

fert

ilise

rs a

nd w

ould

co

ver

5 m

. For

rea

lly g

ood

grow

th, a

dd L

AN

at a

rat

e of

20

g/m

whe

n th

e pl

ants

hav

e ab

out 5

to 6

leav

es.

Whe

n ap

plyi

ng L

AN

to th

e gr

owin

g cr

op, o

pen

a fu

r-ro

w w

ith a

hoe

abo

ut 1

0 to

15

cm a

way

from

the

row

of

pla

nts,

mix

the

fert

ilise

r w

ith th

e so

il us

ing

a st

ick,

w

ater

the

furr

ow a

nd th

en c

lose

.

Wh

en

usi

ng

po

ultr

y o

r p

ig m

an

ure

, a

pp

ly o

ne

10

-l

buck

et in

a b

and

of a

bout

20

cm w

ide

over

a le

ngth

of

15

m, w

ork

the

man

ure

into

the

top

soil,

wat

er th

e b

an

d t

ho

rou

gh

ly a

nd

wa

it o

ne

to

tw

o w

ee

ks b

efo

re

tran

spla

ntin

g. W

hen

you

use

kraa

l man

ure,

use

the

sa

me

pro

ced

ure

, b

ut

ap

ply

on

e 1

0-l

bu

cke

t o

ver

a le

ngth

of 5

m.

Irrig

atio

n

Bit

ter

wa

term

elo

n n

ee

ds

co

ns

iste

nt

mo

istu

re.

Irri

ga

ting

de

ep

ly is

ne

ed

ed

to

ke

ep

th

e s

oil

mo

ist,

ra

the

r th

an

ap

ply

ing

fre

qu

en

t, s

ho

rte

r sp

rin

klin

gs.

O

nce

th

e f

low

ers

em

erg

e,

irri

ga

te t

he

pla

nts

th

or-

ough

ly e

very

thr

ee d

ays.

The

bes

t tim

e to

irri

gate

is

mid

-day

, afte

r th

e flo

wer

s an

d fr

uit h

ave

had

time

to

set a

nd th

e be

es h

ave

visi

ted.

Wee

d co

ntro

l

Wee

d co

ntro

l is

esse

ntia

l for

goo

d yi

eld

and

it m

akes

ha

rves

ting

easi

er.

Han

d w

eedi

ng,

hoei

ng a

nd o

ther

m

echa

nica

l mea

ns a

re u

sed

to c

ontr

ol w

eeds

. T

wo

or th

ree

wee

ding

s ar

e ne

eded

bef

ore

the

stem

s gr

ow

Ori

gin

an

d d

istr

ibu

tio

n

Bitt

er w

ater

mel

on o

rigi

nate

s in

sou

ther

n A

fric

a an

d oc

curs

nat

ural

ly in

Sou

th A

fric

a, N

amib

ia, B

otsw

ana,

Z

imb

ab

we

, M

oza

mb

iqu

e,

Za

mb

ia a

nd

Ma

law

i. It

is

wid

ely

dist

ribut

ed in

Afr

ica

and

Asi

a.

Pro

du

ctio

n a

reas

in S

ou

th A

fric

a

Bitt

er w

ater

mel

on is

com

mon

in s

ome

prov

ince

s of

S

outh

Afr

ica,

incl

udin

g Li

mpo

po,

Fre

e S

tate

, N

orth

-W

est,

Gau

teng

and

Nor

ther

n C

ape.

Des

crip

tio

n

Bitt

er w

ater

mel

on is

an

annu

al h

erb

with

cur

ly te

ndril

sw

hich

can

gro

w u

p to

3 m

long

.

Ste

m

The

ste

ms

are

thin

, hai

ry, a

ngul

ar, g

roov

ed a

nd h

ave

tend

rils

at e

ach

node

. The

y ar

e hi

ghly

bra

nche

d an

d up

to 1

0 m

long

.

Roo

ts

The

root

sys

tem

is v

ery

exte

nsiv

e an

d su

perf

icia

l with

a

tapr

oot a

nd m

any

late

ral r

oots

.

Leav

es

Le

ave

s a

re h

air

y a

nd

de

ep

ly p

alm

ate

wit

h 3

to

5

lob

es

on

2 t

o 1

9 c

m p

eti

ole

s. T

he

y h

ave

a r

ou

gh

text

ure

and

a vi

sibl

e w

hite

ven

atio

n.

Flo

wer

s

Flo

wer

s w

ith la

rge,

yel

low

pet

als

of a

roun

d 2

to 1

0 m

m

are

rand

omly

dis

pers

ed,

form

ing

man

y se

eded

fru

it w

ith a

var

iega

ted

light

-gre

en a

nd d

ark-

gree

n pa

ttern

.

Fru

it

The

frui

t var

ies

cons

ider

ably

in m

orph

olog

y an

d si

ze.

The

pul

p is

typ

ical

ly p

ink

or r

ed,

thou

gh y

ello

w,

or-

ange

. Whi

te fl

eshe

d va

rietie

s ar

e al

so p

opul

ar.