Optimizing the planting density under the ridge and furrow rainwater harvesting system to improve crop water productivity for foxtail millet in semiarid areas

Meng, Xiangzhong; Lian, Yanhao; Liu, Qi; Zhang, Peng; Jia, Zhikuan; Han, Qingfang

doi:10.1016/j.agwat.2020.106220

Cited by 22 publications

(8 citation statements)

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“…Planting density is also an important factor affecting crop ET C , and related studies have shown that an increased planting density of maize significantly increases ET C ( Guo et al., 2021 ). Deep soil water consumption is significantly elevated owing to the high planting density ( Magaia et al., 2017 ; Meng et al., 2020 ). RS 76 L under CI significantly reduced SAWC in the 20–60 cm soil layer within a horizontal distance of 19–38 cm from the cotton row radius compared with RS 66 + 10 H and RS 76 H ( Figure 3 ).…”

Section: Discussionmentioning

confidence: 99%

Optimal planting pattern of cotton is regulated by irrigation amount under mulch drip irrigation

Zuo

Wang

et al. 2023

Front. Plant Sci.

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ObjectiveIt is of great importance to explore agronomic management measures for water conservation and cotton yield in arid areas.MethodsA four–year field experiment was conducted to evaluate cotton yield and soil water consumption under four row spacing configurations (high/low density with 66+10 cm wide, narrow row spacing, RS66+10H and RS66+10L; high/low density with 76 cm equal row spacing, RS76H and RS76L) and two irrigation amounts (CI:conventional drip irrigation; LI:limited drip irrigation) during the growing seasons in Shihezi, Xinjiang.ResultsA quadratic relationship was observed between the maximum LAI (LAImax) and seed yield. Canopy apparent transpiration rate(CAT), daily water consumption intensity (DWCI) and crop evapotranspiration (ETC) were positively and linearly correlated with LAI. The seed yields, lint yields, and ETC under CI were 6.6–18.3%,7.1–20.8% and 22.9–32.6%higher than those observed under LI, respectively. The RS66+10H under CI had the highest seed and lint yields. RS76L had an optimum LAImax range, which ensured a higher canopy apparent photosynthesis and daily dry matter accumulation and reached the same yield level as RS66+10H; however, soil water consumption in RS76L was reduced ETC by 51–60 mm at a depth of 20–60 cm at a radius of 19–38 cm from the cotton row,and water use efficiency increased by 5.6–8.3%compared to RS66+10H under CI.ConclusionA 5.0<LAImax<5.5 is optimum for cotton production in northern Xinjiang, and RS76L under CI is recommended for high yield and can further reduce water consumption. Under LI, the seed and lint yield of RS66+10H were 3.7–6.0% and 4.6–6.9% higher than those of RS76L, respectively. In addition, high-density planting can exploit the potential of soil water to increase cotton yields under water shortage conditions.

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Section: Discussionmentioning

confidence: 99%

Optimal planting pattern of cotton is regulated by irrigation amount under mulch drip irrigation

Zuo

Wang

et al. 2023

Front. Plant Sci.

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“…The limited availability of water in the soil can prevent the plants from solubilizing and absorbing nutrients, restricting the formation and growth of tissue, and resulting in low productivity (Lobato et al, 2020). Although millet is widely grown in arid and semi-arid regions, it needs a reasonable amount of water, radiation, and nutrients to achieve good productivity (Meng et al, 2020;Tounkara et al, 2020).…”

Section: Productive Performancementioning

confidence: 99%

Integrated management of agronomic practices in the forage cactus: maximising productivity, biological efficiency and economic profitability

Alves¹,

Jardim²,

Souza³

et al. 2022

J PROF ASSOC CACTUS

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Forage cactus cropping systems that include a combination of agricultural practices (cloning, irrigation, mulching and/or intercropping) can increase forage production and economic return in semi-arid environments. This study evaluated the effect on productivity, biological efficiency and economic return of combining different practices with forage cactus cropping systems in the semi-arid region of Brazil. The research was conducted in four experimental areas, in a randomised block design with four replications, and included the following practices: 1) clones – irrigation - cover, 2) different irrigation depths, 3) intercropping - mulching, and 4) different levels of mulch. The treatments in experiment I consisted of three cactus clones (‘Orelha de Elefante Mexicana’—OEM; ‘Miúda’—MIU and ‘IPA-Sertânia’—IPA), two water regimes (rainfed and irrigated), and two levels of mulch (with and without mulch). Experiment II comprised four irrigation depths (0, 40, 80 and 120% of the crop evapotranspiration) and three cactus clones. In experiment III, three crop arrangements (single cactus, cactus intercropped with millet, and single millet) were evaluated under two levels of mulching (with and without mulching). In experiment IV, four levels of mulch were used (0, 5, 10 and 15 Mg ha-1). The total number of cladodes per plant, fresh matter yield (YFM), dry matter yield (YDM), and final plant density were obtained when harvesting. Economic viability was assessed using the profitability index (PI). The rainfed systems showed greater yield. The use of mulch afforded greater productivity. The OEM clone (YFM = 310.76 Mg ha-1 and YDM = 29.87 Mg ha-1) obtained a higher yield than did the IPA and MIU clones. The highest PI values were achieved under the rainfed systems. The MIU and IPA clones exhibited lower PI values. The cactus-millet intercrop achieved the best performance with the use of mulch. Cactus systems of 15.0 Mg ha-1 showed a greater PI value. It was concluded that the integrated management of such practices as intercropping, mulching and the adoption of the OEM clone can increase the supply of forage. These practices can promote the sustainable intensification of forage input in Livestock Production Systems in semi-arid environments.

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“…Foxtail millet ranks second in millet production with an average of six million tons from the Southern part of Europe and Asia alone ( Yang et al, 2012 ; Aidoo et al, 2016 ). Globally it is cultivated in marginal and resource poor soils and is an ideal crop for sustainable agriculture ( Meng et al, 2020 ). The short life cycle, high breeding rate and minimal water for rapid maturation ( Doust et al, 2009 ; Xing et al, 2022 ) make foxtail millet a farmer’s favorite.…”

Section: Introductionmentioning

confidence: 99%

Molecular genetics and phenotypic assessment of foxtail millet (Setaria italica (L.) P. Beauv.) landraces revealed remarkable variability of morpho-physiological, yield, and yield‐related traits

et al. 2023

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Foxtail millet (Setaria italica (L.) P. Beauv.) is highly valued for nutritional traits, stress tolerance and sustainability in resource-poor dryland agriculture. However, the low productivity of this crop in semi-arid regions of Southern India, is further threatened by climate stress. Landraces are valuable genetic resources, regionally adapted in form of novel alleles that are responsible for cope up the adverse conditions used by local farmers. In recent years, there is an erosion of genetic diversity. We have hypothesized that plant genetic resources collected from the semi-arid climatic zone would serve as a source of novel alleles for the development of climate resilience foxtail millet lines with enhanced yield. Keeping in view, there is an urgent need for conservation of genetic resources. To explore the genetic diversity, to identify superior genotypes and novel alleles, we collected a heterogeneous mixture of foxtail millet landraces from farmer fields. In an extensive multi-year study, we developed twenty genetically fixed foxtail millet landraces by single seed descent method. These landraces characterized along with four released cultivars with agro-morphological, physiological, yield and yield-related traits assessed genetic diversity and population structure. The landraces showed significant diversity in all the studied traits. We identified landraces S3G5, Red, Black and S1C1 that showed outstanding grain yield with earlier flowering, and maturity as compared to released cultivars. Diversity analysis using 67 simple sequence repeat microsatellite and other markers detected 127 alleles including 11 rare alleles, averaging 1.89 alleles per locus, expected heterozygosity of 0.26 and an average polymorphism information content of 0.23, collectively indicating a moderate genetic diversity in the landrace populations. Euclidean Ward’s clustering, based on the molecular markers, principal coordinate analysis and structure analysis concordantly distinguished the genotypes into two to three sub-populations. A significant phenotypic and genotypic diversity observed in the landraces indicates a diverse gene pool that can be utilized for sustainable foxtail millet crop improvement.

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Optimizing the planting density under the ridge and furrow rainwater harvesting system to improve crop water productivity for foxtail millet in semiarid areas

Cited by 22 publications

References 35 publications

Optimal planting pattern of cotton is regulated by irrigation amount under mulch drip irrigation

Optimal planting pattern of cotton is regulated by irrigation amount under mulch drip irrigation

Integrated management of agronomic practices in the forage cactus: maximising productivity, biological efficiency and economic profitability

Molecular genetics and phenotypic assessment of foxtail millet (Setaria italica (L.) P. Beauv.) landraces revealed remarkable variability of morpho-physiological, yield, and yield‐related traits

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