Phenophases, morphophysiological indices and cutting time in clones of the forage cacti under controlled water regimes in a semiarid environment

被引：23
作者：
Araujo Junior, George do Nascimento [1 ,2 ]
da Silva, Thieres George Freire [1 ,2 ]
de Souza, Luciana Sandra Bastos [2 ]
de Araujo, Gherman Garcia Leal [3 ]
de Moura, Magna Soelma Beserra [3 ]
Alves, Cleber Pereira [1 ,2 ]
Salvador, Kaique Renan da Silva [2 ]
Alves de Souza, Carlos Andre [1 ]
de Assuncao Montenegro, Abelardo Antonio [1 ]
da Silva, Marcelo Jose [1 ]
机构：
[1] Univ Fed Rural Pernambuco, Recife, PE, Brazil
[2] Univ Fed Rural Pernambuco, Ave Gregorio Ferraz Nogueira,Caixa Postal 063, BR-56909535 Serra Talhada, PE, Brazil
[3] Empresa Brasileira Pesquisa Agr, Petrolina, PE, Brazil
来源：
JOURNAL OF ARID ENVIRONMENTS | 2021年 / 190卷
关键词：
Irrigation; Nopalea; Growth rates; Opuntia stricta Haw; (Haw; OPUNTIA-FICUS-INDICA; MORPHOLOGICAL-CHARACTERISTICS; CO2; UPTAKE; PEAR; GROWTH; IRRIGATION; YIELD; RAIN; PRODUCTIVITY; DYNAMICS;
D O I：
10.1016/j.jaridenv.2021.104510
中图分类号：
Q14 [生态学（生物生态学）];
学科分类号：
071012 ; 0713 ;
摘要：
The aim of this study was to evaluate the effect of different controlled water regimes on the morphophysiological indicators, phenophases, and ideal cutting time of forage cacti clones grown in a semiarid environment. From 2016 to 2018, in the semi-arid region of Brazil, the Miuda (MIU), Orelha de Elefante Mexicana (OEM) and IPA Sertania (IPA) clones were submitted to three regimes (40%, 80% and 120% ETc, where ETc is crop evapotranspiration) and to rainfed conditions (0% ETc). Cladode area index and the dry matter yield (DM) were used for calculating the morphophysiological indices. The cladode emission aided in delimiting the phenophases and, based on the DM accumulation, defined the ideal time for cutting the crop. The OEM clone excelled in terms of dry matter accumulation with a maximum value of 0.0441 Mg ha(-1) degrees Cday(-1). The water regimes above 80% ETc rise the number of phenophases in MIU and IPA clones. Cultivating forage cactus under water regime up to 40% ETc for OEM (895 degrees Cday) and 80% ETc for MIU and IPA (737 degrees Cday and 708 degrees Cday, respectively) anticipates the harvest time. Thus, a controlled reduction in the amount of water no negatively impact the growth dynamics, phenology, or cutting time.
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页数：9
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