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STANDARDIZATION OF AGRO-TECHNIQUES FOR CULTIVATION OF
HORTICULTURE CROPS UNDER COST EFFECTIVE GREENHOUSE.

 

Greenhouse cultivation in India is of recent origin and is being increasingly practiced for production of quality produce in the off-season for export. Ornamental plant production and export oriented floriculture units can be successful only if the production is high and quality is excellent. In order to ensure consistency in the quantity and quality of production at reasonable cost, it is necessary to adopt latest technologies of greenhouse production.

The present high-tech floricultural export oriented units (EOU) have benefited by and large the corporate sector and large sized entrepreneurs where as for small growers greenhouse technology has still remained a myth. High initial investment for establishing a greenhouse is one of the biggest constraint for a small grower. However, of late the consumer's preference for high quality produce even in the domestic market is paving a way for protected cultivation of flowers by quite a few farmers.

Studies on the standardization of agro-techniques and utilization of cost-effective greenhouses for commercial cultivation of roses, gerberas, carnation and tuberose for getting higher productivity of quality flowers and high returns under taken at the Plasticulture Development Center of the Division of Horticulture at the University of Agricultural Sciences, GKVK, Bangalore are summarized here under:

1 Roses cultivation under naturally ventilated greenhouse.
 

Planting of rose plants at a density of 7 plants/m2 (45cm between the row and 15 cm between the plant in double row system) with recommended dose of fertilizers through fertigation along with foliar application of micronutrients (multiplex 2 ml/l of water) at weekly interval is recommended to get maximum flower yield 196 fl/m2/year and 20,000 flowers/100m2/year realizing a net profit of Rs.10,000/100m2 /year).

2 Gerbera under naturally ventilated greenhouse.
 

Planting of gerbera plants at a spacing of 30cm x 30 cm with 80 per cent of the recommended dose (12:8:25 g NPK/m2/week) of fertilizers through fertigation along with foliar application of micronutrients (multiplex 2 ml/l of water) at weekly interval is recommended to get maximum flower yield of 21,600 flowers/100m2/year realizing a net profit of Rs. 47,000/100m2/year) from gerbera under naturally ventilated greenhouse.

3 Carnation under naturally ventilated greenhouse.
 

Planting of carnation plants at a density of 25 plants/m2 with 80 per cent of the recommended dose (15:8:30 g NPK/m2/month)of fertilizers through fertigation along with use of Azotobactor (250 g/ha.) at weekly interval is recommended to get maximum flower yield of 31,300 flowers/100m2/year realizing a net profit of Rs. 30,000/100m2/year) from carnations under naturally ventilated greenhouse.

4 Tuberose under naturally ventilated greenhouse.
 

Planting of tuberose bulbs at a density of 34 bulbs/m2 with 250 per cent of the recommended dose (40:40:40 g NPK/m2/year) of fertilizers through fertigation at weekly interval is recommended to get maximum flower yield of 14,300 flowers/100m2/year realizing a net profit of Rs. 32,000/100m2/year) from carnations under naturally ventilated greenhouse.

5 Limonium under shade net and under green house.
 

Application of 50 % N + 50% P +100% K + Vermicompost (8.3 t/ha.) + Azotobactor (200g/ha.) + Bacillus megatherium var. Phophtic (200 g/ha.) will not only produce maximum number of spikes (90.06 /m2/year) of excellent quality (133.66 cm length and 108.16 cm spike spread) but also realizing highest returns.

6 Tomato under naturally ventilated greenhouse.
 

Planting of indeterminate type tomato seedlings at a spacing of 60cm x 45cm and providing with (350:350:350 kg NPK/ha.) 140 per cent of the recommended dose of fertilizers as water soluble fertilizers through fertigation along with use of growth regulators (GA3 at 25 ppm concentration) at weekly interval is recommended to get highest fruit yield of 2,650 kg/100m2/ crop (or 265 tons/ha.) realizing a net profit of Rs. 11,000/100m2/year from tomato under naturally ventilated greenhouse.

7 Capsicum under naturally ventilated greenhouse.
 

Planting of capsicum seedlings at a spacing of 45cm x 30cm and providing with (300:300:300 kg NPK/ha.) 120 per cent of the recommended dose of fertilizers as water soluble fertilizers through fertigation along with use of growth regulators (GA3 at 10 ppm concentration) at weekly interval is recommended to get highest fruit yield of 1,100 kg/100m2/ crop (or 110 tons/ha.) realizing a net profit of Rs. 10,100/100m2/year from capsicum under naturally ventilated greenhouse.

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