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

Table 10

The maize grain crop data at various stages.

Crop Name	Maize Grain	Scientific Name	Zea mays
Planting date (KSA)	15/03/2020
Harvest date	17/07/2020
Stages	Initial	Develop	Mid	Late	Total
Length (days)	20	35	40	30	125
Kc values	0.30	⟶	1.20	0.35
Rooting depth (m)	0.30	⟶	1.00	1.00
Critical depletion	0.55	⟶	0.55	0.80
Yield response friction	0.40	0.40	0.30	0.50	1.25
Crop height (m)			2

The Kc value at initial and developing stage is 0.30; at mid-season stage, the Kc is 1.20; and at late season stage, the Kc value is 0.35.