Iseilema laxum Hack.

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Graminae

Common names

Machuri (Uttar Pradesh), musel (Maharashtra), moshi (Gujarat) (India).

Description

Perennial, stems 15-50 cm long, ascending from a stout, hard, sometimes shortly creeping root-stock, very slender, simple or sparingly branched; root-fibres wiry. Leaves 7-15 cm long by 1-3 mm wide, linear; panicle occupying one-third to one-half of the stem, long, narrow, of distant axillary fascicles 6-12 mm long. Involucral spikelets truly whorled, 4 mm long. Pedicellate spikelets on long, ciliate pedicels. Bisexual spikelets narrowly lanceolate, 5 mm long (Cooke, 1958). Roots reach 105 cm, with most activity at 38 cm (Dabadghao & Shankarnarayan, 1973).

Season of growth

Summer.

Altitude range

Sea-level to 760 m in Mysore, India.

Rainfall requirements

500-1 375 mm in India.

Soil requirements

It favours medium- to fine-textured loamy soils with a pH of 6.1- 7.4. Usually found in heavy, black, waterlogged soils (Whyte, 1964).

Sowing methods

The seed is broadcast.

Sowing time and rate

Sow at 4.5-6.7 kg/ha.

Dry-matter and green-matter yields

Fertilizer studies have shown that dry matter production can be boosted from 4 490 kg/ha to 6 370 kg/ha by applying 40 kg Ntha. There was no response to potassium. The forage yield varies little from year to year because of the wet habitat.

Suitability for hay and silage

In the Dichanthium/Iseilema zone in India it is used mainly for hay.

Seed yield

Seed loses viability quickly after 12 months.

Palatability

One of the top-ranking fodder grasses, relished by cattle, and the main feed of the Ongole breed of cattle in Andhra Pradesh, India.

Natural habitat

Favours low-lying situations where water stands for two to four months a year.

Genetics and reproduction

2n=8m 24, 28, 36 (Fedorov, 1974). It is a variable species. Reproduction is sexual.

Economics

It is so valued that it replaces paddy cultivation and brings a high price in the Bombay grass market (Dabadghao & Shankarnarayan, 1973). It can be grazed, but is usually cut for fodder.

Further reading

Whyte, 1964.

Tolerance to salinity

It is mildly tolerant, associated with Sporobolus marginatus (Whyte, 1964).

Land preparation

A good seed-bed is prepared.