Agroclimatic aptitude of <i>Eucalyptus urophylla</i> for the Matopiba region

Souza, Olíria Morgana Menezes; Oliveira, Bruno Guimarães de; Collicchio, Erich; Silva Júnior, José Luiz Carbal; Serra, Juan Carlos Valdés

doi:10.5902/1980509870219

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Articles • Ci. Fl. 34 (2) • 2024 • https://doi.org/10.5902/1980509870219 copy

Agroclimatic aptitude of Eucalyptus urophylla for the Matopiba region

Aptidão Agroclimática do Eucalyptus urophylla para a região do Matopiba

Authorship SCIMAGO INSTITUTIONS RANKINGS

ABSTRACT

This work aimed to identify areas of agroclimatic aptitude for Eucalyptus urophylla cultivation in MATOPIBA. The agroclimatic aptitude classes for the species were determined considering the temperature and water needs, being adopted three different values of available water capacity (AWC), using a geographic information system (GIS). The agroclimatic aptitude classes for all AWCs analyzed identified the existence of full cultivation in some regions but with a predominance of restricted areas. The fit zones predominated in the mountainous regions of Bahia, southern Maranhão and northwest of Tocantins. There was a percentage increase in the aptitude area favorable for E. urophylla (apt) cultivation, from 7.68% to 29.13%, considering the AWC values of 100 and 220 mm, respectively.

Keywords
Agroclimatic zoning; Hydric balance; Agricultural border

Temperature (ºC)	Aptitude classes	Rainfall (mm)
< 16	Inapt	< 900	Restricted
16 – 27	Apt	900 - 2,000	Apt
> 27	Inapt	>2,000	Marginal

Productivity potential	Productivity (m³/ha/year)	Deficit (mm)	Aptitude classes
High	> 35	30 - 250	Apt
Medium	25 – 35	250 - 350	Marginal
Low	< 25	> 350	Restricted

Conditions			Aptitude Class
T(°C) Inapt (<16°C or >27°C)	Apt AWD		Inapt*
	Marginal AWD
	Restricted AWD
T(°C) Apt 16 to 27°C	Apt AWD	900< Pa < 2,000 mm	Apt
	Apt AWD	Pa > 2,000 mm	Apt*
	Apt AWD	Pa < 900 mm	Restricted **
	Marginal AWD	900< Pa < 2,000 mm	Marginal
	Marginal AWD	Pa > 2,000 mm	Marginal*
	Marginal AWD	Pa < 900 mm	Inapt
	Restricted AWD	900< AP < 2,000 mm	Restricted
	Restricted AWD	Pa > 2,000 mm	Restricted *
	Restricted AWD	Pa < 900 mm	Inapt

Aptitude Class	Description
Apt	Favorable thermal and water conditions.
Apt*	Favorable thermal and water conditions, but observing the incidence of diseases.
Marginal	Favorable thermal condition and water restriction. Apt with complementary irrigation.
Marginal*	Favorable thermal condition and water restriction. Apt for supplementary irrigation, but with due regard for the incidence of diseases.
Restricted	Favorable thermal condition and accentuated water restriction. Apt with full irrigation.
Restricted *	Favorable thermal condition and accentuated water restriction. Apt with full irrigation, but with due regard for the incidence of diseases.
Restricted **	Favorable thermal and water conditions, but with observance of crop productivity due to the low amount of rain in the crop cycle.
Inapt	Favorable thermal condition and accentuated water restriction. Low amount of rain during the crop cycle.
Inapt*	Unfavorable thermal conditions for crop development.

Aptitude Class	Grouped classes
Apt	Apt and Apt* Class
Marginal	Marginal and Marginal* Class
Restricted	Restricted, Restricted* and Restricted** Class
Inapt	Inapt and Inapt* Class

Classes	Area (%)
Classes	AWC = 100mm	AWC = 150mm	AWC = 220mm
Apt (30 < AWD < 250 mm)	7.68	15.24	29.55
Marginal (250 < AWD < 350 mm)	25.20	34.03	38.27
Restricted (> 350 mm)	67.12	50.73	32.19
TOTAL	100.00	100.00	100.00

Parameters		Min.	Max.	Medium	Amplitude
Ta (°C)		21.2	27.3	24.3	6.2
AP (mm)		650	2,200	1,425	1,550
AWD (mm)	AWC = 100mm	151	884	517.5	733
	AWC = 150mm	122	884	503	762
	AWC = 220mm	96	884	490	788

Classes	Area (%)
Classes	AWC = 100mm	AWC = 150mm	AWC = 220mm
Apt	7.69	15.00	29.13
Marginal	24.49	33.38	37.14
Restricted	55.06	39.10	21.38
Inapt	12.76	12.52	12.35
Total	100.00	100.00	100.00

Universidade Federal de Santa Maria Av. Roraima, 1.000, 97105-900 Santa Maria RS Brasil, Tel. : (55 55)3220-8444 r.37, Fax: (55 55)3220-8444 r.22 - Santa Maria - RS - Brazil
E-mail: cienciaflorestal@ufsm.br

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[1] Source: Flores et al. (2016)