Cold- season dry matter yield in subterranean clover Carroni A.M., Missio A., Pecetti L., Piano E. Systèmes sylvopastoraux. Pour un environnement, une agriculture et une économie durables Zaragoza : CIHEAM Cahiers Options Méditerranéennes; n. 12 1995

Systèmes sylvopastoraux. Pour un environnement, une agriculture et une économie durables

Zaragoza : CIHEAM

Cahiers Options Méditerranéennes; n. 12 1995

pages 37-40

Article available on lin e / Article dispon ible en lign e à l’adresse :

--- http://om.ciheam.org/article.php?ID PD F=96605481

--- To cite th is article / Pou r citer cet article

--- Carroni A.M., Missio A., Pecetti L., Piano E. Cold-season dry matter yield in su bterran ean clover.

Systèmes sylvopastoraux. Pour un environnement, une agriculture et une économie durables . Zaragoza : CIHEAM, 1995. p. 37-40 (Cahiers Options Méditerranéennes; n. 12)

---

http://www.ciheam.org/

http://om.ciheam.org/

Cold-season dry matter yield in subterranean clover

Pecetti and E. Piano

*

Summary: The ability of the cool season is a key in the

basin. This study assessed the autumn and in

The that wide exists among in the cool

season. did not an essential to in it

influenced the yield at the of the season mostly affected autumn

yield but had influence on the subsequent cold-season yield.

yield, subterraneum

the

by of

in

of is

to

to

et al, 1980). to

these species are: i) the potential

low is ii) the ability to to the

in the available seed bank in the soil (Cocks, 1988).

The ability to as an

in at

populations.

37

CIHEAM - Options Mediterraneennes

to the

by an at

evaluation involved 356 L.

populations collected in of to

in each season, made between the

end of of

as

the six in the

i.e. the cumulated yield-of 30,

to of

in the two seasons was also computed and

The time as the sowing to

the (mean of

time

and yield of the

-

Table 1 -of

all of collection) to that among lines (data not shown), except that yield was among lines within the CVs, tended to

Table 1. Summary statistics andprobability level of the F-test in the analyisis of variance of total, autumn-winter and winter and regeneration parameter of subterranean clover lines.

Character Prob.

Total (&plot) 591 20 266-859 < 0.001

<0.001 44-2 14

118 25 (&plot)

<0.001 76-328 20

206

AW/Td (%)

<0.001 300-3900 49 1739 1992-93 (no./plot)

<0.001 19-64 19 36

W/Td (%) 20 24 10-3 0.21

a: cumulated two seasons (14 cuts); b: six cuts in two

cuts in two of the total

As expected, total 2),

lengthening of the to

time 2)

indicating that in

38

W E , as indicated

by to the fact

that^

to to

and W/T in ^turn, i.e.

of The' values of the

W- at the

population level-is to an

Table 2. Correlation coeficients between total dry matter yield, seasonal dry matter yield, and flowering time .I.. v o f .Isubterranean clover lines.

I 1

I

-

-0.08ns

*: I 0.05;

**:

the-yield in the 3) indicate that the effect of

an influence on the cold-season yield but t h s is substantially

to the.

in

Table 3. Correlation coeficients between the sward regeneration parameter recorded in autumn and dry matter yield recorded in the three autumn-winter cuts (in parentheses the date of each cut).

I

I

I 1

I

No. of seedlings plot

I

I

I

**: I 0.01;

***:

in the cool

as it enables selection of A

to

of et 1993).

is to

so that it is expected that

of to

CIHEAM - Options Mediterraneennes

As also found by. Cocks (1988)

appeats the the

that

Buddenhagen 1990. Legumes in systems in climates. in Osman A.E.,

Jones eds., The of legumes in the of the

Academic 3-29.

Cocks P.S., 1988. The and legumes in livestock based systems.

L.A. eds., fixation by legumes in Nijhoff

3-10.

Cocks P.S., 1980. wild plants to annual medics and

in in G.C.,

eds., legumes animal

Pecetti Piano 1993. of the of yield and plant

in and

Technical 28. FAO, 20-23.

Piano 1984. on ^' the of of

38: 75-90.

Piano 1987. objectives of in in E. ed., Annual

Lodi: 33-47.