Insect frass fertilizer as a regenerative input for improved biological nitrogen fixation and sustainable bush bean production.

Autor:	Chepkorir A; International Centre of Insect Physiology and Ecology, Nairobi, Kenya.; Department of Agricultural Science and Technology, Kenyatta University, Nairobi, Kenya., Beesigamukama D; International Centre of Insect Physiology and Ecology, Nairobi, Kenya., Gitari HI; Department of Agricultural Science and Technology, Kenyatta University, Nairobi, Kenya., Chia SY; International Centre of Insect Physiology and Ecology, Nairobi, Kenya., Subramanian S; International Centre of Insect Physiology and Ecology, Nairobi, Kenya., Ekesi S; International Centre of Insect Physiology and Ecology, Nairobi, Kenya.; Department of Zoology and Entomology, University of Pretoria, Pretoria, South Africa., Abucheli BE; International Centre for Tropical Agriculture, Kigali, Rwanda., Rubyogo JC; International Centre for Tropical Agriculture, Nairobi, Kenya., Zahariadis T; Synelixis Solutions S.A., Chalkida, Greece.; Department of Agriculture Development, National and Kapodistrian University of Athens, Athens, Greece., Athanasiou G; Synelixis Solutions S.A., Chalkida, Greece., Zachariadi A; Synelixis Solutions S.A., Chalkida, Greece., Zachariadis V; Synelixis Solutions S.A., Chalkida, Greece., Tenkouano A; International Centre of Insect Physiology and Ecology, Nairobi, Kenya., Tanga CM; International Centre of Insect Physiology and Ecology, Nairobi, Kenya.
Jazyk:	angličtina
Zdroj:	Frontiers in plant science [Front Plant Sci] 2024 Sep 05; Vol. 15, pp. 1460599. Date of Electronic Publication: 2024 Sep 05 (Print Publication: 2024).
DOI:	10.3389/fpls.2024.1460599
Abstrakt:	Bush bean ( Phaseolus vulgaris L.) production is undermined by soil degradation and low biological nitrogen fixation (BNF) capacity. This study evaluated the effect of black soldier fly frass fertilizer (BSFFF) on bush bean growth, yield, nutrient uptake, BNF, and profitability, in comparison with commercial organic fertilizer (Phymyx, Phytomedia International Ltd., Kiambu, Kenya), synthetic fertilizer (NPK), and rhizobia inoculant (Biofix, MEA Fertilizers, Nairobi, Kenya). The organic fertilizers were applied at rates of 0, 15, 30, and 45 kg N ha -1 while the NPK was applied at 40 kg N ha -1 , 46 kg P ha -1 , and 60 kg K ha -1 . The fertilizers were applied singly and in combination with rhizobia inoculant to determine the interactive effects on bush bean production. Results showed that beans grown using BSFFF were the tallest, with the broadest leaves, and the highest chlorophyll content. Plots treated with 45 kg N ha -1 BSFFF produced beans with more flowers (7 - 8%), pods (4 - 9%), and seeds (9 - 11%) compared to Phymyx and NPK treatments. The same treatment also produced beans with 6, 8, and 18% higher 100-seed weight, compared to NPK, Phymyx, and control treatments, respectively. Beans grown in soil amended with 30 kg N ha -1 of BSFFF had 3-14-fold higher effective root nodules, fixed 48%, 31%, and 91% more N compared to Phymyx, NPK, and rhizobia, respectively, and boosted N uptake (19 - 39%) compared to Phymyx and NPK treatments. Application of 45 kg N ha -1 of BSFFF increased bean seed yield by 43%, 72%, and 67% compared to the control, NPK and equivalent rate of Phymyx, respectively. The net income and gross margin achieved using BSFFF treatments were 73 - 239% and 118 - 184% higher than the values obtained under Phymyx treatments. Our findings demonstrate the high efficacy of BSFFF as a novel soil input and sustainable alternative for boosting BNF and improving bush bean productivity. Competing Interests: Authors TZ, GA, AZ, and VZ were employed by Synelixis Solutions S.A. The remaining authors declare that the research was conducted in the absence of any commercial or financial relationships that could be construed as a potential conflict of interest. (Copyright © 2024 Chepkorir, Beesigamukama, Gitari, Chia, Subramanian, Ekesi, Abucheli, Rubyogo, Zahariadis, Athanasiou, Zachariadi, Zachariadis, Tenkouano and Tanga.)
Databáze:	MEDLINE
Externí odkaz:	Zobrazit plný text záznamu