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Cultivation

Cultivation
Corchorus olitorius is an annual crop. The plant grows well in the lowland tropics, ranging from warm temperate zones trough tropical desert to wet forest life zones. It can tolerate an annual precipitation between 400 and 4290 mm per year (optimum 1000 mm per year (6)). Some cultivars are sensible to waterloggin, especcially when they are young (4). Annual temperatures between 16.8 and 27.5°C are suitable (1)(2). For the soil a PH of 4.5 to 8.2 is needed (1)(2) The plant prefers a fertile, humus-rich, well-drained alluvial soil but also grows well in not optimal soil conditions (3). Before sowing the soil is prepared carefully by plowing and the seeds are broadcasted or dribbled behind the plow in the wet season. The seeds must be pre-soak for 24 hours in warm water and immediatly sown (4). Mix the small seeds with sand makes them easier to sow (6). If the soil is wet, germination takes place two to three days after sowing. When the plant achieved an height of 8-25 cm, the seedlings are harrowed with a rake three to four times and weeded two to three times (4). The plants are planted with a spacing of 20-30 cm between the plants. THE PLANT can be transplanted (6). Cow dung, wood ashes or rotted water hyacinth (Eichhornia crassipes) or its ashes are used as a manure (4).

Watering -> read somewhere, that it nees Harvest

First leaves are harvested after five to six weeks (6) Yield performance Farmers however, usually obtain average yields of 5 - 15 tonnes (5)

Plant Protection Anthracnose spots caused by Colletotrichum gloeosporioides may infect 50-90% of a jute population, but spraying with copper oxychloride at 0.5% strength checked the spread, holding it to 5-10% (ICAR, 1973). Thangavel et al (1974) found that this species was badly infested by 3 species of weevils (Myllocerus spp.) while C. capsularis was unaffected. The semilooper Anomis sabulifera may stunt the growth, reducing fiber yields by ca 13-32%. The yellow mite, Polyphagotarsonemus latus may also reduce yields (4).

postharvest Seeds can be stored for 8-12 months in well sealed jars (6).

(1) Duke, J.A. 1978. The quest for tolerant germplasm. p. 1-61. In: ASA Special Symposium 32, Crop tolerance to suboptimal land conditions. Am. Soc. Agron. Madison, WI.

(2) Duke, J.A. 1979. Ecosystematic data on economic plants. Quart. J. Crude Drug Res. 17(3-4):91-110.

(3) Buchanan. R. A Weavers Garden. Covers all aspects of growing your own clothes, from fibre plants to dyes.

(4) https://www.hort.purdue.edu/newcrop/duke_energy/Corchorus_olitorius.html, title Corchorus olitorius L., last visit: 16.11.17

(5) Protabase - Plant Resources of Tropical Africa http://www.prota.org

(6) http://fm13.cmsvr.com/fmi/webd/#Food_Plants_World, title food Plants international, last visit: 16.11.17