Indian Journal of Horticulture

  • Year: 2010
  • Volume: 67
  • Issue: 3

Plant water relations, yield and nutrient content of passion fruit in relation to evaporation replenishment and fertigation

  • Author:
  • K. Srinivas, V.V. Sulladmath, R. Palaniappan, R. Venugopalan
  • Total Page Count: 4
  • DOI:
  • Page Number: 289 to 292

Division of Fruit Crops, Indian Institute of Horticultural Research, Bangalore 560 089.

**Corresponding author: Div. of Soil Science, IIHR, Bangalore.

***Corresponding author: Div. of Statistics, IIHR, Bangalore.

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Abstract

Field experiments were carried out to study the response of passion fruit to irrigation and fertigation levels. Fruit number and yield (22.85 kg/pl) were higher with 50% evaporation replenishment rate (ER) as compared to 25% ER (18.84 kg/pl). the yield differences between 50, 75 and 100% recommended dose of fertilizer (RDF) was not significant (19.68 - 21.68 kg/pl). the response surface models fitted to the yield data indicated an optimum ER of 40% and RDF 55%. the relative water content and leaf nutrient content was higher with 50% ER and the leaf water potentials recorded lower values with 50% ER. the total water use was 282.5 and 564 mm with 25 and 50% ER and the water use efficiency was 40 and 66 kg/ha-mm.the leaf nutrient content (N, P, K, ca & Mg) were higher with 50% ER and 100% RDF.

Keywords

Evaporation replenishment, fertigation, passion fruit, water relations