Polyhalite improves growth, yield, and quality and reduces insect pest incidence in sugarcane (Saccharum officinarum L.) in the semiarid tropics

文献类型： 外文期刊

第一作者： Bhatt, Rajan

作者： Bhatt, Rajan;Imas, Patricia;Perelman, Adi;Verma, Krishan K.;Al-Shuraym, Laila A.;Sayed, Samy;Gaber, Ahmed;Hossain, Akbar

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关键词： polyhalite; sugarcane; productivity; quality; insect pest

期刊名称：FRONTIERS IN SUSTAINABLE FOOD SYSTEMS （ 影响因子：3.1； 五年影响因子：4.6 ）

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年卷期： 2024 年 8 卷

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收录情况： SCI

摘要： Introduction: In semiarid tropical locations, polyhalite (K2Ca2Mg(SO4)4H(2)O) and muriate potash (KCl) were tested for their ability to increase cane growth, yield, and recovery at potash (K)- and calcium (Ca)-deficient sites. Methods: The treatments involved control plots with no potash fertilizer (T-1); T-2 and T-3 applied potassium through (muriate potash) MOP only at 80 and 120 kg K2O ha(-1), whereas T-4 and T-5 applied potassium with half of MOP and polyhalite at 80 and 120 kg K2O ha(-1), respectively. Results and discussion: At 35 days after harvest (DAH), T-2 (10.82%), T-3 (24.1%), T-4 (34.9%), and T-5 (34.9%) had a greater ratoon resprouting rate than did the control treatment, where it was just 37.0 out of 100 harvested canes. At 308 DAH, T-2 (-5.9%), T-3 (-5.7%), and T-5 (-6.6%) presented greater leaf chlorophyll contents than did T-1. The K-fertilized plots yielded 64.31 t ha(-1) in T-2 and 65.97 t ha(-1) in T-5, whereas the control plot yielded 61.5 t ha(-1). Compared with the control plots, the T-5 plots experienced fewer stalk borer (-28.6%), top borer (-23.3%), and early shoot borer (-23.3%) attacks. T-2, T-4, and T-5 presented higher percentages of commercial cane sugar (CCS) (6.82, 8.83, and 8.74%, respectively) than did the control plots. T-1 and T-3 had similar CCSs (10.99 and 11.33%, respectively). The CCS weight per area ranged from 7.98 to 8.47 t ha(-1) near maturity. T-4 (8.59 t ha(-1)) and T-5 (8.60 t ha(-1)) had significantly greater values than did T-1-T-3. Compared with the control, the applied potassium fertilizer increased the economic output by 8,711, 11,687, 13,485, and 13,857 INR ha(-1) in the T-2, T-3, T-4, and T-5 plots, respectively. The higher cost of polyhalite than MOP has reduced its economic advantages. Thus, the T-4 plots outperformed the other treatments in terms of growth, yield, and quality indices, but their higher values (120 kg K2O ha(-1)) were statistically equivalent. Conclusion: Finally, the study concluded that MOP and polyhalite at a 50% ratio of 80 kg K2O ha(-1) may help improve sugarcane growth, yield, and quality in semiarid tropical locations.

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