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Influence of soil residual boron on rice performance and soil properties under conventional and conservation rice–wheat cropping systems
Crop & Pasture Science ( IF 1.9 ) Pub Date : 2021-05-20 , DOI: 10.1071/cp20339
Faisal Nadeem , Muhammad Farooq , Basit Mustafa , Ahmad Nawaz

Application of boron (B) to wheat in conservation rice–wheat cropping systems may have a residual effect that improves productivity and grain quality of the following rice crop. Two field experiments were conducted to evaluate the effect of soil residual B on the performance, grain quality and grain yield of rice and soil biological properties under puddled transplanted (PuTR) and direct-seeded (DSR) rice systems on silty loam soil. A preceding wheat crop was sown using two different tillage systems, plough tillage (PTW) and no tillage (NTW), in combination with four B application treatments: control (no B), soil application (SA, 1 kg ha–1), seed priming (0.01 M), and foliar spray (0.01 M). After wheat harvest, rice was planted in PuTR and DSR systems. The conservation tillage system in both wheat and rice (NTW–DSR) significantly increased soil organic carbon (by 18%) and soil microbial biomass carbon (by 5%) over conventional tillage systems (PTW–PuTR). Improved soil health and availability of soil residual B in the NTW-SA–DSR system improved grain yield (by 23–37%) and grain quality (grain protein by 3–8%, amylose content by 26%) over PTW–PuTR irrespective of B application method. Best economic return and net benefit were recorded in the order NTW-SA–DSR > PTW-SA–DSR > NTW-SA–PuTR. Thus, the application of B to NTW had a strong residual effect on grain quality and profitability of the following rice crop. In rice–wheat cropping systems on a silty loam soil, conservation tillage systems (NTW–DSR) significantly improved the availability of soil residual B and soil health and increased economic return.



中文翻译:

常规和保护性稻麦体系下土壤残留硼对水稻性能和土壤特性的影响

在水稻和小麦保护性耕作系统中,向小麦施用硼(B)可能会产生残留效应,从而提高后续稻谷作物的产量和谷物品质。进行了两个田间试验,以评价在粉质壤土上的水耕移栽(PuTR)和直接播种(DSR)水稻系统下,土壤残留B对水稻的性能,籽粒品质和籽粒产量以及土壤生物学特性的影响。先前的小麦作物使用两种不同的耕作系统(犁耕(PTW)和免耕(NTW))播种,并结合四种B施用处理:对照(​​无B),土壤施用(SA,1 kg公顷–1),种子灌注(0.01 M)和叶面喷雾(0.01 M)。小麦收割后,将水稻种植在PuTR和DSR系统中。与常规耕作系统(PTW–PuTR)相比,小麦和水稻(NTW–DSR)的保护性耕作系统显着增加了土壤有机碳(18%)和土壤微生物生物量碳(5%)。与PTW-PuTR相比,NTW-SA-DSR系统中改善的土壤健康状况和土壤残留B的有效性提高了谷物产量(提高了23-37%)和谷物质量(谷物蛋白提高了3-8%,直链淀粉含量提高了26%) B的应用方法。最佳经济回报和净收益按NTW-SA-DSR> PTW-SA-DSR> NTW-SA-PuTR的顺序记录。因此,将B施用到NTW上对随后的水稻作物的谷物品质和获利能力具有很强的残留效应。在粉质壤土上的稻麦种植系统中,

更新日期:2021-05-22
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