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Agriculture > Vegetables > Amaranthus (Amaranthus spp.)

Intercultural Operations

Manuring

Apply 50 tonnes of FYM per ha as basal dose before planting. After preparing trenches, apply N:P2O5:K2O @ 50:50:50 kg/ha.  Another 50 kg of N can be applied at regular intervals as topdressing. Spraying 1 % urea immediately after each harvest will increase the yield.

Irrigation

Although amaranth is relatively drought tolerant, insufficient water will reduce yield. Water should be applied especially just after sowing or transplant­ing to ensure a good stand. It is better to furrow irrigate amaranth fields every 10 days during the cool dry season, and weekly during the hot dry season. As a rule, the plants should be irrigated if wilting occurs at noon time. During the rainy season, drainage is essential for plant survival and growth. Raised beds, clean furrows and large drainage channels facilitate quick drainage of excess water after heavy rain.

Irrigate thoroughly to maintain vigorous plant growth. But avoid over irrigation, which may enhance dis­ease development and nutrient leaching. Drip irri­gation or microsprinkler irrigation is recommended in areas with limited water supply. If sprinkler irri­gation used, avoid irrigating in the late evening to prevent diseases.

Weed control

Weeds compete for light, water, and nutrients, thereby resulting in reduced yield. Amaranth is small seeded and slow to germinate, therefore, weed control is es­sential early in the season. Weeds may be controlled using a combination of methods. Thorough land preparation is the first key to ef­fective weed control. A seedbed free of weed seeds allows amaranth seedlings to get a head start on the weeds and establish a canopy that can shade out emerging weed seedlings. Mulching is recommended to reduce weed com­petition, soil compaction and erosion; mulching also conserves soil moisture. Mulching is easier to practice if the amaranth crop is transplanted, but can also be used for row seeded crops after the seedlings reach a height of 10-15 cm. Hand or hoe weeding can be performed as needed.

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