Research Biotica | Volume 4 Issue 2 | Pages: 69-73 | Doi : 10.54083/ResBio/4.2.2022/69-73

Research Article

OPEN ACCESS | Published on : 16-Jun-2022

Determination of Growth-Stage-Specific Crop Coefficients (Kc) for Drip Irrigated Wheat (Triticum aestivum L.) under Different Land Configurations

• D.D. Vadalia
• Centre of Excellence on Soil and Water Management, Research Testing and Training Centre, Junagadh Agricultural University, Junagadh, Gujarat (362 001), India

G.V. Prajapati
• Centre of Excellence on Soil and Water Management, Research Testing and Training Centre, Junagadh Agricultural University, Junagadh, Gujarat (362 001), India

S.H. Parmar
• Centre of Excellence on Soil and Water Management, Research Testing and Training Centre, Junagadh Agricultural University, Junagadh, Gujarat (362 001), India

G.D. Gohil
• Dept. of Processing and Food Engineering, College of Agricultural Engineering and Technology, Junagadh Agricultural University, Junagadh, Gujarat (362 001), India

Abstract

Determination of the actual crop evapotranspiration (ET_c) during the crop growth is important for precise irrigation scheduling, sustainable development and environmentally sound water management. Development of a crop coefficient (K_c) can enhance ET_c estimations in relation to specific crop phenological development. An experiment was conducted on sandy loam soil at Junagadh Agricultural University, Junagadh to determine growth stage specific K_c of wheat (GW-366) using drip irrigation under different land configurations (L₁: broad bed furrow and L₂: flat land) at different irrigation levels (I₁: 1.0 ET_c and I₂: 0.8 ET_c). Soil moisture sensors were utilized to estimate Actual crop evapotranspiration. Results revealed that adjusted FAO K_c predicts higher value than sensor-based K_c values under both land configurations. Broad bed furrow (BBF) land configuration observed lower K_c values compared to flat land configuration at all growth stages of wheat. Sensor based K_c-ini, K_c-dev, K_c-mid and K_c-end values of BBF observed 0.21 (7.26%), 0.59 (13.78%), 1.00 (7.27%) and 0.29 (9.48%) and 0.20 (8.43%), 0.55 (13.04%), 0.91 (8.18%) and 0.26 (9.48%) lower than flat land configuration. Overestimated adjusted FAO-K_c values caused a loss 106.18 mm and 89.43 mm precious water for wheat under BBF and flat land respectively.

How to Cite

Vadalia, D.D., Prajapati, G.V., Parmar, S.H., et al., 2022. Determination of Growth-Stage-Specific Crop Coefficients (K_c) for Drip Irrigated Wheat (Triticum aestivum L.) under Different Land Configurations. Research Biotica 4(2), 69-73. DOI: 10.54083/ResBio/4.2.2022/69-73.

Keywords

Broad bed Furrow, Crop coefficient, Drip irrigation, Land configuration, Wheat

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