Crop-coefficients of tomato as derived using monolithic weighing type lysimeter in mid hill region of Meghalaya

Authors

  • MOUTUSI TAHASHILDAR
  • PRADIP K. BORA
  • LALA I. P. RAY
  • VISHRAM RAM

DOI:

https://doi.org/10.54302/mausam.v68i4.790

Keywords:

Crop-coefficient, Reference evapo-transpiration, Crop evapo-transpiration, Lysimeter, Tomato

Abstract

Crop coefficients (kc) was determined for tomato (Lycopersicon esculentum Mill.) with the help of UMS-GmBH cylindrical field lysimeter of 30 cm diameter and 120 cm deep and Penman-Monteith FAO-56 model. Eight other models viz. Modified Penman Method, Hargreaves equation, Samani-Hargreaves equation, Thornthwaite equation, Solar Radiation Method, Net Radiation Method, Blaney-Criddle Method and Radiation Method were also used for estimation of ET and compared with Penman-Monteith model to find out the accuracy of prediction with limited weather parameters. Scatter plot and paired t-test were used for comparison. Out of all these models, Blaney-Criddle method, Solar and Net Radiation method were found to yield similar results as given by Penman-Monteith model. The values of crop evapo-transpiration (ETc) were varying from 2.54 mm d-1 to 6.70 mm d-1. The crop-coefficients (kc) for three growth stages of tomato viz., initial, mid and maturity were found to be 0.55, 1.07 and 0.78, respectively.

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Published

01-10-2017

How to Cite

[1]
M. . TAHASHILDAR, P. K. BORA, L. I. P. . RAY, and V. . RAM, “Crop-coefficients of tomato as derived using monolithic weighing type lysimeter in mid hill region of Meghalaya”, MAUSAM, vol. 68, no. 4, pp. 723–732, Oct. 2017.

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Section

Shorter Contribution