Effects of rice-water chestnut intercropping on rice sheath blight and rice blast diseases

Qin, Junhao; He, Hongzhi; Luo, Shiming; Li, Huashou

doi:10.1016/j.cropro.2012.09.009

Cited by 24 publications

(17 citation statements)

References 13 publications

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“…We hypothesize that this may be one of the important mechanisms of wheat and faba bean intercropping for disease control. This result is consistent with previous studies on rice/watermelon, rice/water chestnut, and corn/sun ower intercropping systems (Ren et al, 2008;Chen et al, 2012;Qin et al, 2013). On the basis of the signi cant improvement of the faba bean root defense system by wheat extracts, compared with the faba bean extracts, the wheat extracts could signi cantly inhibit the mycelial growth and germination of spores, thereby fundamentally reducing the possibility of pathogen infection of faba beans.…”

Section: Effects Of Extracts From Faba Bean Stems Leaves and Roots Osupporting

confidence: 91%

Allelopathy of Wheat and Faba Bean Extracts in an Intercropping System

Guo¹,

Lv²,

Dong³

et al. 2020

Preprint

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Background We intensively studied faba bean (Vicia faba L.) and wheat (Triticum aestivum L.) intercropping and found that this type of intercropping can effectively control the occurrence of faba bean wilt under field conditions. We conducted hydroponic experiments to explore the role of plant extracts in process of soil-borne diseases and the mechanism of disease control of faba bean and wheat intercropping. In this experiment, three concentration gradients of faba bean and wheat stems and leaves and root extracts were added to study the effects of faba bean and wheat extracts on faba bean growth, root physiological resistance and the growth of Fusarium oxysporum f. sp. fabae (FOF). Result Faba bean extracts significantly inhibited the growth of faba bean seedlings and the activity of root defense enzymes and significantly stimulated the growth of FOF at high concentrations. Compared with the treatment with faba bean extracts, wheat extracts significantly enhanced the growth of faba bean seedlings, increased the activity of defense enzymes and inhibited the growth of FOF. Conclusions Based on these results, we believe that wheat extract can effectively alleviate the autotoxicity of faba beans and also control the occurrence of faba bean wilt in the field. This provides a theoretical basis for practical intercropping to reduce the harm of faba bean wilt.

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Section: Effects Of Extracts From Faba Bean Stems Leaves and Roots Osupporting

confidence: 91%

Allelopathy of Wheat and Faba Bean Extracts in an Intercropping System

Guo¹,

Lv²,

Dong³

et al. 2020

Preprint

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“…Intercropping also produces higher GY by increasing the effective duration of crop growth because wheat is sown 30 days before maize, which keeps growing past the time of wheat harvest ( Li et al, 2001 ). Meanwhile, advantages of intercropping yield over monocultures have been documented to be caused by improved light conditions, reduced pressures from diseases and weeds ( Fernández-Aparicio et al, 2010 ; Qin J. et al, 2013 ), enhanced facilitative effects of the intercrops across the co-growth period ( Li et al, 2001 ), and improved GYs and NRs ( Abu-Bakar et al, 2014 ). Among water conservation approaches evaluated in this study, reduced tillage combined with wheat straw covering (i.e., the NTSI pattern) increased WUE and WP, which was mainly attributed to lower soil evaporation and optimized water balance ( Yin et al, 2015 ).…”

Section: Discussionmentioning

confidence: 99%

Wheat-Maize Intercropping With Reduced Tillage and Straw Retention: A Step Towards Enhancing Economic and Environmental Benefits in Arid Areas

Yin

Guo

et al. 2018

Front. Plant Sci.

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Intercropping is considered a promising system for boosting crop productivity. However, intercropping usually requires higher inputs of resources that emit more CO2. It is unclear whether an improved agricultural pattern could relieve this issue and enhance agricultural sustainability in an arid irrigation area. A field experiment using a well-designed agricultural practice was carried out in northwest China; reduced tillage, coupled with wheat straw residue retention measures, was integrated with a strip intercropping pattern. We determined the crop productivity, water use, economic benefits, and carbon emissions (CEs). The wheat-maize intercropping coupled with straw covering (i.e., NTSI treatment), boosted grain yield by 27–38% and 153–160% more than the conventional monoculture of maize and wheat, respectively, and it also increased by 9.9–11.9% over the conventional intercropping treatment. Similarly, this pattern also improved the water use efficiency by 15.4–22.4% in comparison with the conventional monoculture of maize by 45.7–48.3% in comparison with the conventional monoculture of wheat and by 14.7–15.9% in comparison with the conventional intercropping treatment. Meanwhile, NTSI treatment caused 7.4–13.7% and 37.0–47.7% greater solar energy use efficiency than the conventional monoculture of maize and wheat, respectively. Furthermore, the NTSI treatment had a higher net return (NR) by 54–71% and 281–338% and a higher benefit per cubic meter of water (BPW) by 35–51% and 119–147% more than the conventional monoculture of maize and wheat, respectively. Similarly, it increased the NR and BPW by 8–14% and 14–16% in comparison with the conventional intercropping treatment, respectively. An additional feature of the NTSI treatment is that it reduced CEs by 13.4–23.8% and 7.3–17.5% while improving CE efficiency by 62.6–66.9% and 23.2–33.2% more than the conventional monoculture maize and intercropping treatments, respectively. We can draw a conclusion that intercropping maize and wheat, with a straw covering soil surface, can be used to enhance crop production and NRs while effectively lowering CO2 emissions in arid oasis irrigation region.

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“…In short, SNPs have an active antifungal activity with great biocide properties, thus, they have the potential to be considered as an economical and eco‐friendly pesticide. The application of chemical fungicides adds additional indirect long‐term and hidden costs as it causes dangerous side effects in both human health and the environment [40]. The editors of Nature estimated that any technology takes some 20 years to emerge from the laboratory and be commercialised [41].…”

Section: Resultsmentioning

confidence: 99%