Fertigation based on a nutrient balance model for cassava production in two different textured soils

Xie, Xintai; Machikowa, Thitiporn; Wonprasaid, Sodchol

doi:10.1080/1343943x.2020.1743189

Cited by 6 publications

(6 citation statements)

References 25 publications

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“…According to a previous study [64], soil fractures may cause root damage due to water stress, even when roots are adequately ventilated. These outcomes were in agreement with previous studies [55,66] reporting that water stress in rice paddy lands stimulated oxygen flow from the shoots to the roots, which resulted in a decrease in the dry mass of roots and generally lower root parameters (RWD, RLD, TSA, and RDW). As shown in Table 3, the total rice biomass and yield increased with the available soil water content (AWC) under the WSS treatment, and SRNF application released an adequate amount of soluble N for rice growth under the WSS × NH treatment.…”

Section: Discussionsupporting

confidence: 93%

“…However, the root morphology was enhanced under WSS and the combination of WSS × NH, which generated massive TSA, revealing an abundance of accessible available N to support strong root development. These findings are in accordance with previous studies [54,55]. As shown in Table 2, the greatest RWD, RLD, TSA and, RDW were produced by the WSS × NH combination as a result of the regular release of a large amount of N ions during rice growth, thereby improving root N uptake and producing large root systems and huge shoot biomass.…”

Section: Discussionsupporting

confidence: 92%

“…These results confirm that the effects of N release on rice growth and yield optimization are usually affected by the volume of water available in the soil. In addition, these findings confirm the results of previous reports on the effects of controlled-release fertilizer on the growth and yield of rice [55,67].…”

Section: Discussionsupporting

confidence: 91%

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Impacts of Slow-Release Nitrogen Fertilizer Rates on the Morpho-Physiological Traits, Yield, and Nitrogen Use Efficiency of Rice under Different Water Regimes

Aasmi

Hamoud

et al. 2022

Agriculture

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The efficient use of water and fertilizer is vital for optimizing plant growth and yield in rice production. To achieve sustainable rice production and resource management, the ways in which applied water and nitrogen affect the root and shoot morpho-physiology, as well as yield, must be understood. In this study, a pot experiment was conducted to investigate the effects of slow-release nitrogen fertilizer (sulfur-coated urea) application at three levels (light nitrogen (NL), medium nitrogen (NM), and heavy nitrogen (NH)) on the growth, yield, and nitrogen use efficiency (NUE) of rice grown under three water regimes (wetting and soil saturation (WSS), wetting and moderate drying (WMD) and wetting and severe drying (WSD)). The results revealed that differences in water regimes and fertilizer rates led to significant differences in the roots, shoots, yield, and NUE of rice. Increasing the N dosage by 5% enhanced the root and biomass production by 16% in comparison with that of the other groups. The NH×WSS treatment produced the greatest root length, weight, density, active absorption, and oxidation. However, the integration of WSS × NL generated the maximum value of nitrogen apparent recovery efficiency (63.1% to 67.6%) and the greatest value of nitrogen partial factor productivity (39.9 g g−1 to 41.13 g g−1). Transmission electron microscopy (TEM) images showed that plants grown under high and medium nitrogen fertilizer rates with WSS had improved leaf mesophyll structure with normal starch grains, clear cell walls, and well-developed chloroplasts with tidy and well-arranged thylakoids. These results show that TEM images are useful for characterizing the nitrogen and water status of leaves in the sub-micrometer range and providing specific information regarding the leaf microstructure. The findings of this study suggest that the application of NH×WSS can produce improvements in growth traits and increase rice yield; however, the NL×WSS treatment led to greater NUE, and the authors recommend its usage in rice agriculture.

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Section: Discussionsupporting

confidence: 93%

Section: Discussionsupporting

confidence: 92%

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Impacts of Slow-Release Nitrogen Fertilizer Rates on the Morpho-Physiological Traits, Yield, and Nitrogen Use Efficiency of Rice under Different Water Regimes

Aasmi

Hamoud

et al. 2022

Agriculture

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“…Results from this study inveterate that severe water stress limits root growth throughout the choy sum growth especially during the early and flower development stages. The poor root development at the seedling stage decreased choy sum productivity; this result is consistent with the findings of [59][60][61].…”

Section: Effect Of Water Stress On Root Morphological Traits Of Choy Sumsupporting

confidence: 89%

Rapid Estimation of Water Stress in Choy Sum (Brassica chinensis var. parachinensis) Using Integrative Approach

Aasmi

Alordzinu

et al. 2022

Sensors

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To optimize crop water consumption and adopt water-saving measures such as precision irrigation, early identification of plant water status is critical. This study explores the effectiveness of estimating water stress in choy sum (Brassica chinensis var. parachinensis) grown in pots in greenhouse conditions using Crop Water Stress Index (CWSI) and crop vegetation indicators to improve irrigation water management. Data on CWSI and Spectral reflectance were collected from choy sum plants growing in sandy loam soil with four different soil field capacities (FC): 90–100% FC as no water stress (NWS); 80–90% FC for light water stress (LWS); 70–80% FC for moderate water stress (MWS); and 60–70% FC for severe water stress (SWS). With four treatments and three replications, the experiment was set up as a completely randomized design (CRD). Throughout the growing season, plant water stress tracers such as leaf area index (LAI), canopy temperature (Tc), leaf relative water content (LRWC), leaf chlorophyll content, and yield were measured. Furthermore, CWSI estimated from the Workswell Wiris Agro R Infrared Camera (CWSIW) and spectral data acquisition from the Analytical Spectral Device on choy sum plants were studied at each growth stage. NDVI, Photochemical Reflectance Index positioned at 570 nm (PRI570), normalized PRI (PRInorm), Water Index (WI), and NDWI were the Vegetation indices (VIs) used in this study. At each growth stage, the connections between these CWSIW, VIs, and water stress indicators were statistically analyzed with R2 greater than 0.5. The results revealed that all VIs were valuable guides for diagnosing water stress in choy sum. CWSIW obtained from this study showed that Workswell Wiris Agro R Infrared Camera mounted on proximal remote sensing platform for assessing water stress in choy sum plant was rapid, non-destructive, and user friendly. Therefore, integrating CWSIW and VIs approach gives a more rapid and accurate approach for detecting water stress in choy sum grown under greenhouse conditions to optimize yield by reducing water loss and enhancing food security and sustainability.

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“…Decreasing the time of labor is valuable because split fertilizer applications using traditional fertilization methods may be costly. With fertigation, however, the labor cost associated with split fertilizer application is minimal (Xie et al 2020). Especially in the late growth stages, the operation of farm equipment in the field may cause unintentional crop injury.…”

Section: Reduced Labor Timementioning

confidence: 99%

The Advantages and Disadvantages of Fertigation

Dixon

Liu

2022

EDIS

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The purpose of this new 4-page article is to outline some of the major benefits and drawbacks a fertigation system may incur. The audience of this article includes county Extension faculty, students who are interested in crop production, growers, certified crop advisors, crop consultants, environmentalists, and policy makers in the agricultural sector. Written by Mary Dixon and Guodong Liu and published by the UF/IFAS Horticultural Sciences Department. https://edis.ifas.ufl.edu/hs1442

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Fertigation based on a nutrient balance model for cassava production in two different textured soils

Cited by 6 publications

References 25 publications

Impacts of Slow-Release Nitrogen Fertilizer Rates on the Morpho-Physiological Traits, Yield, and Nitrogen Use Efficiency of Rice under Different Water Regimes

Impacts of Slow-Release Nitrogen Fertilizer Rates on the Morpho-Physiological Traits, Yield, and Nitrogen Use Efficiency of Rice under Different Water Regimes

Rapid Estimation of Water Stress in Choy Sum (Brassica chinensis var. parachinensis) Using Integrative Approach

The Advantages and Disadvantages of Fertigation

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