Association of morphological and water factors with irrigated forage cactus yield

Revista Brasileira de Engenharia Agricola e Ambiental

Silva, Servulo M. S. e¹  Silva, Thieres G. F. da²  Assis, Mery C. de S.²  Morais, José E. F. de²  Zolnier, Sérgio³  Barbosa, Marcela L.³ 

[1] Instituto Agronômico de Pernambuco, Arcoverde, Brazil;Universidade Federal Rural de Pernambuco, Serra Talhada, Brazil;Universidade Federal de Viçosa, Viçosa, Brazil

关键词: evapotranspiration;    Nopalea sp.;    Opuntia sp.;    Brazilian Semi-arid region.;   

DOI  :  10.1590/1807-1929/agriambi.v21n9p600-605

学科分类：农业科学（综合）

来源: Universidade Federal de Campina Grande * Centro de Ciencias e Tecnologia

【 摘 要 】

This study aimed to understand the relationship of morphological characteristics and actual evapotranspiration of forage cactus clones with their productive capacity under different water regimes. The data used in this study were collected between the years 2012 and 2013, in Serra Talhada, State of Pernambuco. The clones Sertânia IPA - IPA, Miúda - MIU and Orelha de Elefante Mexicana - OEM were submitted to three irrigation depths (2.5, 5.0 and 7.5 mm) and three irrigation intervals (7, 14 and 28 days). Cladode and plant morphology, accumulated actual evapotranspiration and yield were obtained at the moment of harvest. Pearson’s correlation matrix was elaborated and, in the sequence, multicollinearity, canonical and path analysis were applied. There was no correlation of yield with the soil water supply and actual evapotranspiration of the clones (p > 0.05). Forage cactus yield was more associated with peculiarities of the morphological characteristics of the clones than with the different soil water supplies or the crop actual evapotranspiration. However, regardless of the water regime and clone, the vigor of the basal cladodes was highly decisive for the expression of the forage cactus productive capacity.

【 授权许可】

CC BY