Application of the Hybrid-Maize model for limits to maize productivity analysis in a semiarid environment

Long, Yi; Yang, Siqi; Li, Shiqing; Chen, Fang

doi:10.1590/s0103-90162012000500003

Cited by 10 publications

(5 citation statements)

References 29 publications

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“…Under water stress increased ABA induced more dry matter distribution into tuber and promoted tuber development, which supported by our pot experiment (Table 4). However, severe water deficiency might prolong the growth period which delays the distribution of dry matter from aboveground to tuber, similar phenomenon reported in maize (Liu et al, 2012). Thus, the dry matter distribution into tuber decreased in 35% RWC compared to 50% RWC, regardless of the increase in ABA.…”

Section: Discussionsupporting

confidence: 71%

Promotion of potato yield under moderate water deficiency at the seedling stage by modifying sink-source relationship

Jia

Lan

Suyala

et al. 2021

Plant Production Science

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Water deficiency is the main bottleneck in potato production in many regions worldwide. The generation of higher tuber yields per unit of water is a key goal for both agronomists and potato growers. In this study, we found that under moderate deficit irrigation (DI; 50% relative water content (RWC)) at the seedling stage of potato growth, the leaf area index (LAI) and dry matter accumulation were lower than control; however, they caught up with and surpassed the control at later developmental stages with a normal water supply, and a higher yield was ultimately achieved. The LAI and total dry weight under severe water stress (35% RWC) also surpassed the control at harvest; however, the final yield remained low, due to the low distribution of dry matter into the tubers. Abscisic acid (ABA) increased under DI conditions at the seedling stage, while gibberellin (GA1 and GA3) levels decreased. Moreover, endogenous ABA increased as plant development proceeded from seedling stage to tuber initiation stage, regardless of water stress. Exogenous ABA application promoted dry matter accumulation and distribution into the tubers. Therefore, it may be that ABA, as a major signaling molecule, mediates water stress to regulate tuber sink capacity at early development period. Through a feedback regulation stronger source capacity was stimulated by sink enhancement mediated by moderate water stress at the seedling stage, reached a higher tuber yield finally by reestablishment of sink-source relationship.

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Section: Discussionsupporting

confidence: 71%

Promotion of potato yield under moderate water deficiency at the seedling stage by modifying sink-source relationship

Jia

Lan

Suyala

et al. 2021

Plant Production Science

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“…For both beans and maize, the number of plants in the net plot of 3 m × 3 m was counted and recorded. At crop maturity, five plants were randomly harvested by cutting at the base (Liu et al, 2012;Pirbolouti et al, 2006). For beans, the seeds from the five plants were counted and weighed, while for maize, the cobs were shelled, and the fresh weight of grains were determined.…”

Section: Data Collection and Analysismentioning

confidence: 99%

Effect of combining organic manure and inorganic fertilisers on maize–bush bean intercropping

Ndengu¹,

Mponela²,

Chataika

et al. 2022

Ex. Agric.

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Summary In sub-Saharan Africa (SSA), farmers intercrop common beans with maize but apply inorganic or organic fertilisers targeting only maize. Effects of this practice on bush bean yield have not been fully evaluated with respect to input use and compatibility when intercropped with maize. An on-farm trial managed by smallholder community members was conducted to assess the influence of various soil fertility management options and cropping systems on the yield of two bush bean genotypes (SER45 and SER83) in two agro-ecological zones of Malawi. The farmer-managed trials were laid out in split-plot design, with the bean genotypes as main plots and a combination of the soil fertility management options (i.e., no input, manure, fertiliser and fertiliser + manure) and cropping systems (i.e., sole crop and intercrop) as subplots. The trials were affected by terminal drought and dry spells, but results show that manure and fertiliser application enhanced the resilience of the drought-tolerant bean genotypes. The genotype SER45 was responsive to manure application in the sole crop, giving a 44.4% yield increase over no-manure application. In sole cropping with fertiliser plus manure, bean yields improved by 40.1% for SER45 and 78.3% for SER83 relative to the no-input control. Although sole cropping had higher bean yields, the treatment with manure and fertiliser had a higher land equivalence ratio for intercrop of 1.54 for SER45 and 1.32 for SER83 over sole cropping. These results show that, under smallholder farmer management, the climate adaptability of bush bean genotypes could be enhanced by the combined application of organic and inorganic fertilisers in maize–bean intercrop. The combined application also enhances whole-farm productivity of the common maize–bean intercrop practice than monocrop, hence is of benefit to most low-input smallholder farmers of SSA.

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“…Simulation models are widely used to address "what if" type questions (Mohanty et al, 2012). The Crop Environmental Resource Synthesis (CERES) maize model in DSSAT (Jones et al, 1986;Kiniry et al, 1997;Yang et al, 2004;Liu et al, 2012) is a process-oriented, management-level model that simulates crop growth, development and yield, soil water and nitrogen balance on homogeneous units from field to regional scales. It is the most widely used maize model and is a recognized reference for comparing new developments in maize growth, development and yield simulation (Lizaso et al, 2011).…”

Section: Crop Simulation Modelsmentioning

confidence: 99%

Climate change impact on maize (Zea mays L.) yield using crop simulation and statistical downscaling models: A review

Chisanga¹,

Phiri²,

Chinene³

2017

Sci. Res. Essays

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Review of literature related to the impact of climate change on maize (Zea mays L.) yield using Global Climate Models (GCMs), statistical downscaling, and crop simulation (APSIM-maize-and-CERES-maize models) models are discussed. GCMs can simulate the current and future climatic scenarios. Crop yield projections using crop models require climate inputs at higher spatial resolution than that provided by GCMs. The computationally inexpensive statistical downscaling technique is widely used for this translation. Studies on regional climate modeling have mostly focused on Southern Africa and West Africa, with very few studies in Zambia. Additionally, the integrated use of climate and crop models have received relatively less attention in Africa compared to other parts of the world. Conversely, the AgMIP protocols have been implemented in Sub-Saharan Africa (SSA) (Ethiopia, Kenya, Tanzania, Uganda and South Africa) and South Asia (SA) (Sri Lanka). In Zambia, however, the protocols have not been applied at either regional or local scale. Applying crop and statistical downscaling models requires calibration and validation, and these are crucial for correct climate and crop simulation. The review shows that although uncertainties exist in the design of models, and parameters, soil, climate and management options, the climate would adversely affect maize yield production in SSA. The potential effect of climate change on maize production can be studied using crop models such as agricultural production simulator (APSIM) and decision support system for agrotechnology (DSSAT) models. There is need to use integrated assessment modeling to study future climate impact on maize yield. The assessment is essential for long-term planning in food security and in developing adaptation and mitigation strategies in the face of climate variability and change.

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Application of the Hybrid-Maize model for limits to maize productivity analysis in a semiarid environment

Cited by 10 publications

References 29 publications

Promotion of potato yield under moderate water deficiency at the seedling stage by modifying sink-source relationship

Promotion of potato yield under moderate water deficiency at the seedling stage by modifying sink-source relationship

Effect of combining organic manure and inorganic fertilisers on maize–bush bean intercropping

Climate change impact on maize (Zea mays L.) yield using crop simulation and statistical downscaling models: A review

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