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Research Article Open access CC BY 4.0

Determining the Growing Potential of Jatropha curcas and Pongamia pinnata under Various Water Regimes

Muhammad Zubair, Zainab Rehman, Syed Bilal Hussain, Muhammad Fraooq Azhar

Asian Journal of Research in Agriculture and Forestry · pp. 259–267 · Published 22 Nov 2023

10.9734/ajraf/2023/v9i4254

Abstract

Pakistan is the among the most populated countries of the world with predominantly arid climate facing different challenges like food insecurity, energy crises, poor health system, poverty, small forest area cover, and significant effects of global warming and climate change. However, there is still a large area with scanty vegetation. Research on devising cultivation techniques for growing more economically profitable plants in these areas will not only improve the ecological environment but also the people’s living standards. Jatropha curcas (JC) and Pongamia pinnata (PP) are two economically important species (bioenergy plants) with potential to grow on dry tropical arid land. Therefore, this study was carried out to check the hypothesis “JC and PP are the suitable species to grow in the dry tropical arid land of Pakistan due to their drought tolerance ability”. The experiment was carried out at the nursery of Bahauddin Zakariya University, Multan. One year old seedlings of both plants were used in the experiment. The design involves two plants of the same species in each row, four treatments, and three replications. The levels of drought were T1 (100% water), T2 (75% water), T3 (50% water), and T4 (25% water). A generalized linear model was applied to check the variation among species and within the treatments of the same species. There is a significant difference (p ≥ 0.05) in growth among species and within the treatments of the same species. JC showed better growth as compared to PP in water stress conditions but PP grow as well. The growth parameters of JC showed a positive response in T2 (75% water) and T3 (50% water) drought levels while the growth parameters of PP showed a positive response in treatments T1 (100% water) and T2 (75% water)as compared to other drought levels. In the case of the fresh and dry weight of JC and PP, significant difference (p ≥ 0.05) was also found among species and within the treatments. Both JC and PP are recommended to grow in the dry tropical regions of Pakistan but JC is declared as the prime specie as compared to PP.

Dry tropical arid region suitable specie water stress Jatropha curcas Pongamia pinnata Pakistan

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