International Journal of Agronomy

Research Article

Growth, Development, and Water Consumption of Irrigated Bean Crop Related to Growing Degree-Days on Different Soil Tillage Systems in Southeast Brazil

Table 3

Polynomial equations () relating the bean crop growth parameters to thermal time (degree-days accumulated), for each soil tillage system (STS): chisel ploughing (CP), disk ploughing (DP), and revolving hoe (RH), and considering all STS as a single data set (All), in Campinas city, São Paulo state, Brazil.


STS

	Vegetal coverage percentage (%)
CP	109.5	−0.716	1.92 × 10⁻³	−1.26 × 10⁻⁶	11	0.97
RH	114.5	−0.803	2.05 × 10⁻³	−1.31 × 10⁻⁶	12	0.97
DP	116.2	−0.763	1.99 × 10⁻³	−1.30 × 10⁻⁶	11	0.97
All	111.1	−0.745	1.95 × 10⁻³	−1.27 × 10⁻⁶	34	0.95

	Leaf area index
CP	−3.36	1.19 × 10⁻²	4.84 × 10⁻⁶	−1.16 × 10⁻⁸	9	0.91
RH	−2.30	5.43 × 10⁻²	1.60 × 10⁻⁵	−1.78 × 10⁻⁸	9	0.95
DP	−2.36	7.25 × 10⁻²	1.04 × 10⁻⁵	−1.37 × 10⁻⁸	9	0.96
All	−3.00	1.01 × 10⁻²	7.27 × 10⁻⁶	−1.28 × 10⁻⁸	27	0.93

	Dry matter (g m⁻²)
CP	183.7	−1.647	4.18 × 10⁻³	−2.20 × 10⁻⁶	11	0.98
RH	126.6	−1.145	2.95 × 10⁻³	−1.45 × 10⁻⁶	11	0.95
DP	142.7	−1.295	3.35 × 10⁻³	−1.71 × 10⁻⁶	11	0.97
All	153.4	−1.383	3.54 × 10⁻³	−1.82 × 10⁻⁶	33	0.96

	Plant height (cm)
CP	16.00	−0.0927	4.15 × 10⁻⁴	−3.08 × 10⁻⁷	9	0.99
RH	27.55	−0.173	5.38 × 10⁻⁴	−3.67 × 10⁻⁷	9	0.98
DP	27.17	−0.156	5.21 × 10⁻⁴	−3.65 × 10⁻⁷	9	0.99
All	23.57	−0.141	4.91 × 10⁻⁴	−3.47 × 10⁻⁷	27	0.96