[Retracted] Topological Sustainability of Crop Water Requirements and Irrigation Scheduling of Some Main Crops Based on the Penman-Monteith Method

Table 8

Wheat crop data at various stages.

Crop Name	Spring Wheat	Scientific Name	Triticum aestivum
Planting date (KSA)	15^th December 2020
Harvest date	23^rd April 2021
Stages	Initial	Develop	Mid	Late	Total
Length (days)	30	30	40	30	130
Kc values	0.30	⟶	1.15	0.30
Rooting depth (m)	0.30	⟶	1.20	1.20
Critical depletion	0.55	⟶	0.55	0.80
Yield response friction	0.40	0.60	0.80	0.40
Crop height (m)			1

The Kc value at the initial and developing stage is 0.30; at mid-season stage, the Kc is 1.15, and at late season stage, the Kc value is 0.30.