Aggrandizing soybean yield, phosphorus use efficiency and economic returns under phosphatic fertilizer application and inoculation with Bradyrhizobium

Mirriam, Akello; Mugwe, J. N.; Raza, Muhammad Ali; Seleiman, Mahmoud F.; Maitra, Sagar; Gitari, Harun I.

doi:10.1007/s42729-022-00985-8

Cited by 28 publications

(22 citation statements)

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“…In another study, the lower component yield and weak growth of soybean crop were mainly because of soybean lodging due to the shade of maize in maize-soybean intercropping (Hussain et al, 2021). However, soybean retains its growth and yield under different environmental stresses when fertilized with optimal fertilizer application of N, P, Fe, and Mo (Gai et al, 2017;Gülser et al, 2019;Seleiman et al, 2021;Mirriam et al, 2022;Oliveira et al, 2022). The leaf area is the key source of carbon assimilation and light interception while chlorophyll is an important pigment involved in not only the absorbance of solar energy but also in its transmission and conversion into electrochemical energy.…”

Section: Discussionmentioning

confidence: 99%

“…The low agronomic traits of the soybean crop in the intercropping under F0 treatment could be attributed to the strong shading effect of the maize crop as reported earlier ( Hussain et al., 2021 ; Cheng et al., 2022 ). However, the improvement in these traits in the intercropping under other treatments (i.e., F1 , F2 , F3 , and F4 ) could be linked to the application of N, Fe, and Mo, which help plants retain their growth under stress environment ( Gai et al., 2017 ; Gülser et al., 2019 ; Seleiman et al., 2021 ; Mirriam et al., 2022 ; Oliveira et al., 2022 ). As previously reported, shading of maize in maize-soybean intercropping had negatively affected the canopy structure and stem characteristics, which resulted in lower physio-agronomic performances of soybean crop ( Cheng et al., 2022 ).…”

Section: Discussionmentioning

confidence: 99%

Section: Discussionmentioning

confidence: 99%

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Nitrogen fertilization coupled with foliar application of iron and molybdenum improves shade tolerance of soybean under maize-soybean intercropping

et al. 2022

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Maize-soybean intercropping is practiced worldwide because of some of the anticipated advantages such as high crop yield and better utilization of resources (i.e., water, light, nutrients and land). However, the shade of the maize crop has a detrimental effect on the growth and yield of soybean under the maize-soybean intercropping system. Hence, this experiment was conducted to improve the shade tolerance of such soybean crops with optimal nitrogen (N) fertilization combined with foliar application of iron (Fe) and molybdenum (Mo). The treatments comprised five (5) maize-soybean intercropping practices: without fertilizer application (F0), with N fertilizer application (F1), with N fertilizer combined with foliar application of Fe (F2), with N fertilizer coupled with foliar application of Mo (F3) and with N fertilizer combined with foliar application of Fe and Mo (F4). The findings of this study showed that maize-soybean intercropping under F4 treatment had significantly (p< 0.05) increased growth indices such as leaf area (cm2), plant height (cm), stem diameter (mm), stem strength (g pot-1), and internode length (cm) and yield indices (i.e., No of pods plant-1, grain yield (g plant-1), 100-grain weight (g), and biomass dry matter (g plant-1)) of the soybean crop. Moreover, intercropping under F4 treatment enhanced the chlorophyll SPAD values by 26% and photosynthetic activities such as Pn by 30%, gs by 28%, and Tr by 28% of the soybean crops, but reduced its CO2 by 11%. Furthermore, maize-soybean intercropping under F4 treatment showed improved efficiency of leaf chlorophyll florescence parameters of soybean crops such as Fv/Fm (26%), qp (17%), ϕPSII (20%), and ETR (17%), but reduced NPQ (12%). In addition, the rubisco activity and soluble protein content of the soybean crop increased by 18% in maize-soybean intercropping under F4 treatment. Thus, this suggested that intercropping under optimal N fertilization combined with foliar application of Fe and Mo can improve the shade tolerance of soybean crops by regulating their chlorophyll content, photosynthetic activities, and the associated enzymes, thereby enhancing their yield and yield traits.

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Section: Discussionmentioning

confidence: 99%

Section: Discussionmentioning

confidence: 99%

Section: Discussionmentioning

confidence: 99%

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Nitrogen fertilization coupled with foliar application of iron and molybdenum improves shade tolerance of soybean under maize-soybean intercropping

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“…Legumes are well known for their ability to fulfill nitrogen requirement through atmospheric N fixation. Thus, legumes in intercropping with cereals can help improve the N content and its uptake by cereals due to the underlying facilitative N transfer through interspecific root interaction ( Nasar et al., 2020b ; Raza et al., 2020 ; Shao et al., 2020 ; Mirriam et al., 2022 ). In our study we found that soybean when intercropped with maize significantly increased the N content and total N uptake of maize crops than in mono-cropping.…”

Section: Discussionmentioning

confidence: 99%

“…More than 36 million hectares of maize were planted in the country in 2013, producing more than any other crop, especially on the North China Plain ( Zhong et al., 2017 ). On the other hand, soybean ( Glycine max L) is an annual grain legume known for its high protein content, vitamins, and minerals ( Raza et al., 2020 ; Mirriam et al., 2022 ). It is a restorative plant that improves the quality and health of the soil by enriching it with nutrients ( Zaeem et al., 2019 ).…”

Section: Introductionmentioning

confidence: 99%

Maize-soybean intercropping at optimal N fertilization increases the N uptake, N yield and N use efficiency of maize crop by regulating the N assimilatory enzymes

et al. 2023

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IntroductionSurplus use of chemical nitrogen (N) fertilizers to increase agricultural Q9 production causes severe problems to the agricultural ecosystem and environment. This is contrary to N use efficiency and sustainable agricultural production.MethodsHence, this study was designed to investigate the effect of maizesoybean intercropping on N uptake, N yield, N utilization use efficiency, and the associated nitrogen assimilatory enzymes of maize crops under different N fertilization for two consecutive years 2021-2022.ResultsThe findings of the study showed that intercropping at the optimal N rate (N1) (250 kg N ha-1) increased significantly maize grain yield by 30 and 34%, residue yield by 30 and 37%, and 100-grain weight by 33 and 39% in the year 2021 and 2022, respectively. As compared with mono-cropping, at this optimal N rate, the respective increase (of maize’s crop N yield indices) for 2021 and 2022 were 53 and 64% for grain N yield, and 53 and 68% for residue N yield. Moreover, intercropping at N1 resulted in higher grain N content by 28 and 31%, residue N content by 18 and 22%, and total N uptake by 65 and 75% in 2021 and 2022, respectively. The values for the land equivalent ratio for nitrogen yield (LERN) were greater than 1 in intercropping, indicating better utilization of N under the intercropping over mono-cropping. Similarly, intercropping increased the N assimilatory enzymes of maize crops such as nitrate reductase (NR) activity by 19 and 25%, nitrite reductase (NiR) activity by 20 and 23%, and glutamate synthase activity (GOGAT) by 23 and 27% in 2021 and 2022, respectively. Consequently, such increases resulted in improved nitrogen use efficiency indices such as N use efficiency (NUE), partial factor nitrogen use efficiency (PFNUE), nitrogen uptake efficiency (NUpE), and nitrogen agronomic efficiency (NAE) under intercropping than mono-cropping. ConclusionThus, this suggests that maize-soybean intercropping under optimal N fertilization can improve the nitrogen status and nitrogen use efficiency of maize crops by regulating the nitrogen assimilatory enzymes, thereby enhancing its growth and yield. Therefore, prioritizing intercropping over an intensive mono-cropping system could be a better option for sustainable agricultural production.

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Smallholder farmers' knowledge on the use of bioslurry as a soil fertility amendment input for potato production in Kenya

et al. 2023

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A survey was conducted on farmers' fields at Werugha and Wusi-Kishamba wards in Taita Taveta County, Kenya, to assess the factors influencing farmers' decisions on the use of bioslurry in the management of soil fertility. Knowledge gaps on bioslurry use provide contrasting claims about the value of bioslurry from source, storage and handling, crop types, soil, and climate conditions, and as a fertilizer. The majority of the farmers in the study sites double up as dairy farmers which has resulted in enormous production of under-utilized cow dung. Over-dependence on the use of inorganic fertilizers leads to the destruction of soil physical and biological properties; hence, the provision of essential nutrients required by plants for growth and development is not achieved at the maximum recommended rates. This results in a yield decrease with potato yield ranging from 8 to 15 t ha À1 , which is 2-to 3-times below the achievable yield of 40 t ha À1 . A survey questionnaire was developed and administered to 120 small-scale farmers within the two wards. Results showed that the use of bioslurry has not been well adopted by farmers from the two wards as only 18% responded to using bioslurry on their farms whereas 78% relied on chemical fertilizers and other forms of manures such as farmyard manure. However, even those using slurry had since been reported to have challenges with its use and application.The 36% of farmers who applied bioslurry alone did so due to its availability considering the high cost of inorganic fertilizers while those who combined it with inorganic fertilizers had faith in chemical fertilizers and that they aimed at achieving high crop yields. The major challenges farmers faced while using slurry on their farms were reported to be on lack of knowledge on the exact quantity to be applied per unit area and on the storage of excess slurry from biodigesters. This implied that even though slurry was available, it was still not useful to the farmers due to under/over application and poor storage. The study, therefore, recommends capacity-building programs and agricultural extension services to be developed, to ensure adequate knowledge on bioslurry use and adoption by smallholder farmers in the management of soil fertility in enhancing crop productivity.

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Aggrandizing soybean yield, phosphorus use efficiency and economic returns under phosphatic fertilizer application and inoculation with Bradyrhizobium

Cited by 28 publications

References 49 publications

Nitrogen fertilization coupled with foliar application of iron and molybdenum improves shade tolerance of soybean under maize-soybean intercropping

Nitrogen fertilization coupled with foliar application of iron and molybdenum improves shade tolerance of soybean under maize-soybean intercropping

Maize-soybean intercropping at optimal N fertilization increases the N uptake, N yield and N use efficiency of maize crop by regulating the N assimilatory enzymes

Smallholder farmers' knowledge on the use of bioslurry as a soil fertility amendment input for potato production in Kenya

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