Point placement of late vegetative stage nitrogen splits increase the productivity, N-use efficiency and profitability of tropical maize under decade long conservation agriculture

Nayak, H.S.; Parihar, C.M.; Mandal, Biswapati; Patra, Kiranmoy; Jat, Shankar Lal; Singh, Raj K.; Singh, Vikram; Jat, M.L.; Garnaik, Saheed; Nayak, Jagamohan; Abdallah, Ahmed M.

doi:10.1016/j.eja.2021.126417

Cited by 19 publications

(7 citation statements)

References 65 publications

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“…(2012) found that the placement of fertilizer in the root zone of crop reduces nitrogen leaching from 0% to 33% over surface application. Likewise, point placement of fertilizer resulted in improved nutrient-use efficiency, since higher concentration of nutrients around the root zone results in better uptake of nutrients and minimizes losses ( Schmitt et al., 2001 ; Fengqin et al., 2018 ; Dass et al, 2019 ; Nayak et al., 2022 ; Paramesh et al., 2023 ). Similarly, in our current study, point placement of fertilizer (PNM 3 ) performed significantly ( p =0.05) superior in nutrient concentration as against PNM 2 , PNM 4 , and PNM 5 , since the nutrient forage area of roots in PNM 2,4,5 is reduced, resulting in suboptimal crop growth (CGR, RGR, and NAR) and DMA.…”

Section: Discussionmentioning

confidence: 99%

Sensor-based precision nutrient and irrigation management enhances the physiological performance, water productivity, and yield of soybean under system of crop intensification

Sachin,

Dass,

Dhar

et al. 2023

Front. Plant Sci.

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Sensor-based decision tools provide a quick assessment of nutritional and physiological health status of crop, thereby enhancing the crop productivity. Therefore, a 2-year field study was undertaken with precision nutrient and irrigation management under system of crop intensification (SCI) to understand the applicability of sensor-based decision tools in improving the physiological performance, water productivity, and seed yield of soybean crop. The experiment consisted of three irrigation regimes [I1: standard flood irrigation at 50% depletion of available soil moisture (DASM) (FI), I2: sprinkler irrigation at 80% ETC (crop evapo-transpiration) (Spr 80% ETC), and I3: sprinkler irrigation at 60% ETC (Spr 60% ETC)] assigned in main plots, with five precision nutrient management (PNM) practices{PNM1-[SCI protocol], PNM2-[RDF, recommended dose of fertilizer: basal dose incorporated (50% N, full dose of P and K)], PNM3-[RDF: basal dose point placement (BDP) (50% N, full dose of P and K)], PNM4-[75% RDF: BDP (50% N, full dose of P and K)] and PNM5-[50% RDF: BDP (50% N, full P and K)]} assigned in sub-plots using a split-plot design with three replications. The remaining 50% N was top-dressed through SPAD assistance for all the PNM practices. Results showed that the adoption of Spr 80% ETC resulted in an increment of 25.6%, 17.6%, 35.4%, and 17.5% in net-photosynthetic rate (Pn), transpiration rate (Tr), stomatal conductance (Gs), and intercellular CO2 concentration (Ci), respectively, over FI. Among PNM plots, adoption of PNM3 resulted in a significant (p=0.05) improvement in photosynthetic characters like Pn (15.69 µ mol CO2 m−2 s−1), Tr (7.03 m mol H2O m−2 s−1), Gs (0.175 µmol CO2 mol−1 year−1), and Ci (271.7 mol H2O m2 s−1). Enhancement in SPAD (27% and 30%) and normalized difference vegetation index (NDVI) (42% and 52%) values were observed with nitrogen (N) top dressing through SPAD-guided nutrient management, helped enhance crop growth indices, coupled with better dry matter partitioning and interception of sunlight. Canopy temperature depression (CTD) in soybean reduced by 3.09–4.66°C due to adoption of sprinkler irrigation. Likewise, Spr 60% ETc recorded highest irrigation water productivity (1.08 kg ha−1 m−3). However, economic water productivity (27.5 INR ha−1 m−3) and water-use efficiency (7.6 kg ha−1 mm−1 day−1) of soybean got enhanced under Spr 80% ETc over conventional cultivation. Multiple correlation and PCA showed a positive correlation between physiological, growth, and yield parameters of soybean. Concurrently, the adoption of Spr 80% ETC with PNM3 recorded significantly higher grain yield (2.63 t ha−1) and biological yield (8.37 t ha−1) over other combinations. Thus, the performance of SCI protocols under sprinkler irrigation was found to be superior over conventional practices. Hence, integrating SCI with sensor-based precision nutrient and irrigation management could be a viable option for enhancing the crop productivity and enhance the resource-use efficiency in soybean under similar agro-ecological regions.

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Section: Discussionmentioning

confidence: 99%

Sensor-based precision nutrient and irrigation management enhances the physiological performance, water productivity, and yield of soybean under system of crop intensification

Sachin,

Dass,

Dhar

et al. 2023

Front. Plant Sci.

Self Cite

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“…Several strategies have been investigated for improving nutrient- and water-use efficiencies for better crop productivity; such as application of organic amendments [ [12] , [13] , [14] ], fertilizer microdosing [ [15] , [16] , [17] ], integrated crop-livestock systems [ [18] , [19] , [20] ], conservation agriculture [ [21] , [22] , [23] ], and integrated soil fertility management (ISFM) [ [24] , [25] , [26] ]. Indeed, research have been implemented in SSA on ISFM that uses the combined application of organic and inorganic amendments for crop intensification [ [27] , [28] , [29] ].…”

Section: Introductionmentioning

confidence: 99%

Hill-placement of manure and fertilizer for improving maize nutrient- and water-use efficiencies in the northern Benin

Yessoufou,

Tovihoudji,

Zakari

et al. 2023

Heliyon

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“…The rice-wheat (RW) cropping system dominates in the Indo-Gangetic Plains (IGP) of South Asia covering an area of 13.5 Mha [1]. Besides being high water, energy, labor, and fertilizers demanding cropping system, burning crop residues, and intensive tillage practices contributed to soil degradation [2][3][4][5]. Consequently, the sustainability of the RW cropping system in the IGP of South Asia is under threat [6], promoting the need for better agri-food systems management practices [7].…”

Section: Introductionmentioning

confidence: 99%

A Decade of Climate-Smart Agriculture in Major Agri-Food Systems: Earthworm Abundance and Soil Physico-Biochemical Properties

et al. 2022

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Earthworms (EWs) could be a viable indicator of soil biology and agri-food system management. The influence of climate-smart agriculture (CSA)-based sustainable intensification practices (zero tillage, crop rotations, crop residue retention, and precision water and nutrients application) on earthworms’ (EWs) populations and soil physico-biochemical properties of rice-wheat cropping system in the Indo-Gangetic plains of South Asia was investigated. This study investigates the effect of 10-years adoption of various CSA practices on the abundance of earthworms and physical and biochemical properties of the soil and EWs’ casts (EWC). Five scenarios (Sc) were included: conventionally managed rice-wheat system (farmers’ practices, Sc1), CSA-based rice-wheat-mungbean system with flood irrigation (FI) (Sc2) and subsurface drip irrigation (SDI) (Sc3), CSA-based maize-wheat-mungbean system with FI (Sc4), and SDI (Sc5). Results revealed that EWs were absent under Sc1, while the 10-year adoption of CSA-based scenarios (mean of Sc2–5) increased EWs’ density and biomass to be 257.7 no. m−2 and 36.05 g m−2, respectively. CSA-based maize scenarios (Sc4 and Sc5) attained higher EWs’ density and biomass over rice-based CSA scenarios (Sc2 and Sc4). Also, SDI-based scenarios (Sc3 and Sc5) recorded higher EWs’ density and biomass over FI (Sc2 and Sc4). Maize-based CSA with SDI recorded the highest EWs’ density and EWs’ biomass. The higher total organic carbon in EWC (1.91%) than in the bulk soil of CSA-based scenarios (0.98%) and farmers’ practices (0.65%) suggests the shift of crop residue to a stable SOC (in EWC). EWC contained significant amounts of C and available NPK under CSA practices, which were nil under Sc1. All CSA-based scenarios attained higher enzymes activities over Sc1. CSA-based scenarios, in particular, maize-based scenarios using SDI, improved EWs’ proliferation, SOC, and nutrients storage (in soil and EWC) and showed a better choice for the IGP farmers with respect to C sequestration, soil quality, and nutrient availability.

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Point placement of late vegetative stage nitrogen splits increase the productivity, N-use efficiency and profitability of tropical maize under decade long conservation agriculture

Cited by 19 publications

References 65 publications

Sensor-based precision nutrient and irrigation management enhances the physiological performance, water productivity, and yield of soybean under system of crop intensification

Sensor-based precision nutrient and irrigation management enhances the physiological performance, water productivity, and yield of soybean under system of crop intensification

Hill-placement of manure and fertilizer for improving maize nutrient- and water-use efficiencies in the northern Benin

A Decade of Climate-Smart Agriculture in Major Agri-Food Systems: Earthworm Abundance and Soil Physico-Biochemical Properties

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