Evapotranspiration and crop coefficients of Italian zucchini cultivated with recycled paper as mulch

Oliveira, Reginaldo Miranda de; Cunha, Fernando França da; Silva, Gustavo Henrique da; Andrade, Lucas Maltoni; Morais, Caio Vieira de; Ferreira, Patrícia Rodrigues; Raimundi, Flávio Pereira Gomes; Freitas, Agnaldo Roberto de Jesus; Souza, Caetano Marciano de; Oliveira, Rubens Alves de

doi:10.1371/journal.pone.0232554

Cited by 14 publications

(5 citation statements)

References 34 publications

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“…It is verified that the R 2 values found in this study are lower than those found for different crops (Alface et al, 2019;Mahmoud and Gan, 2019;Oliveira et al, 2020). In these studies, some crops, such as sugar cane, wheat, potato, sorghum, zucchini, etc., were evaluated and, in all of them, R 2 was above 70%.…”

Section: Estimation Of Et W /Eto Ratio By Ndvisupporting

confidence: 72%

Water use of different weed species using lysimeter and NDVI

Rodrigues¹,

Cunha²,

Silva³

et al. 2021

Advances in Weed Science

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This is an open-access article distributed under the terms of the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided that the original author and source are credited. IntroductionWeeds compete with agronomic crops for water, light, and nutrients, significantly affecting agricultural yields (Fialho et al., 2012;Swanton et al., 2015). According to Cirujeda et al. (2012), the infestation of Cyperus rotundus in tomato plantation was responsible for a 64% reduction in yield compared to the area without interference from this weed. Besides the competition for resources, weeds can cause other types of damage, such as the damage to mechanized harvesting, allelopathic effects, pest and disease hosting, changes in the secondary metabolism of crops, among others (Rockenbach et al., 2018). Given this scenario, it is evident that a greater understanding of the interactions between crops and weeds is of fundamental importance for developing more efficient and sustainable agriculture.Among the various existing species of weeds, Cyperus rotundus, Commelina diffusa, and Cynodon dactylon stand out because they are difficult to control and have an intense competition and dissemination capacity. According to Das ( 2008), Cyperus rotundus is present in the world's tropical and subtropical regions, interfering in 52 crops in 92 countries. Commelina diffusa, on the other hand, for being tolerant to the herbicide glyphosate, has become a major problem with the advent of the transgenic technology Roundup Ready (RR) in different crops (Opeña et al., 2014). Cynodon dactylon, according to Johnson and Davis (2012), causes significant economic damage in organic plantations due to its high capacity to reproduce by rhizomes, stolons, and seeds, combined with the absence of efficient control compatible with organic production standards.Several studies demonstrate that weeds have greater development than agronomic crops in environments with limited resources (Berger et al., 2010;Opeña et al., 2014;Swanton et al., 2015). This occurs because, along with the genetic improvement of cultivated plants, the yield and quality of fruits were valued to the detriment of rusticity and edaphoclimatic adaptation (Bai et al., 2018). On the other hand, most spontaneous plants evolved through natural selection, developing several resistance mechanisms to adverse conditions in the environment, especially to water deficit in soil.Water is vital for several physiological processes in plants, such as respiration, photosynthesis, cell division, absorption, and transport of nutrients, among others (Berger et al., 2010). However, the dispute with other sectors for this resource has increased every day due to climate changes combined with poor management of its Abstract: Background: Weeds reduce water use efficiency in crops due to water used by the weed and to the reduction in crop yield. In addition to the usual presence of weeds in the interrow of different crops, the management of these plants ...

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Section: Estimation Of Et W /Eto Ratio By Ndvisupporting

confidence: 72%

Water use of different weed species using lysimeter and NDVI

Rodrigues¹,

Cunha²,

Silva³

et al. 2021

Advances in Weed Science

Self Cite

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show abstract

“…They subtracted it from the known distributed water from dams to estimate the groundwater demand in an integrated modeling of demand and supply of water. This method exploited previous works on the determination of crop coefficients [51][52][53][54][55][56][57][58][59] to estimate actual evapotranspiration [60] by relying upon remote sensing-based vegetation indices [61][62][63][64]. The crop coefficient was also used as a supplement in a parameterized water balance approach by Saadi et al [65] in order to show growth conditions.…”

Section: Quantification Methodsmentioning

confidence: 99%

A Review of Irrigation Information Retrievals from Space and Their Utility for Users

et al. 2021

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Irrigation represents one of the most impactful human interventions in the terrestrial water cycle. Knowing the distribution and extent of irrigated areas as well as the amount of water used for irrigation plays a central role in modeling irrigation water requirements and quantifying the impact of irrigation on regional climate, river discharge, and groundwater depletion. Obtaining high-quality global information about irrigation is challenging, especially in terms of quantification of the water actually used for irrigation. Here, we review existing Earth observation datasets, models, and algorithms used for irrigation mapping and quantification from the field to the global scale. The current observation capacities are confronted with the results of a survey on user requirements on satellite-observed irrigation for agricultural water resources’ management. Based on this information, we identify current shortcomings of irrigation monitoring capabilities from space and phrase guidelines for potential future satellite missions and observation strategies.

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“…VIs have proven to be more effective than leaf growth and physiological characteristics in selecting superior treatments (Table 5 and Figure 6). Oliveira et al [66] reported decreased water consumption in Italian zucchini (Cucurbita pepo L.) when mulched with recycled paper. They demonstrated the utility of VIs by showing a positive/strong R 2 = 0.73 relationship between the crop coefficient and the NDVI.…”

Section: Discussionmentioning

confidence: 99%

Classification and Identification of Pinecone Mulching in Blueberry Cultivation Based on Crop Leaf Characteristics and Hyperspectral Data

Jeong,

Jang,

Kim

et al. 2024

Agronomy

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While crushed pinecone mulch holds promise as a beneficial material for blueberry cultivation, research on its effectiveness remains limited. Crop leaf characteristics can serve as parameters for assessing mulching effects, although there are several limitations, including the need to analyze various distinct characteristics separately. The combination of hyperspectral data and machine learning techniques is expected to enable the selection of only the most important features among these characteristics. In this study, we investigated the impact of various mulching treatments utilizing pine tree byproducts, including crushed pinecones. Mulching variations included non-mulching (NM), crushed pinecones (PCs), a mixture of crushed pinecones and sulfur (PCS), pine needles (PNs), and sulfur treatment (S). Conventional methods were employed to measure leaf growth (length and width) and physiological characteristics (chlorophyll content, chlorophyll fluorescence, and stomatal conductance). Hyperspectral reflectance was also measured, and classification models using Partial Least Squares Discriminant Analysis (PLS-DA) and eXtreme Gradient Boosting (XGBoost) were developed for crop characteristics, vegetation indices (VIs), visible and near-infrared (VNIR), and short-wave infrared (SWIR). The results showed that using crushed pinecones as the sole mulching material for blueberries, without sulfur treatment, had a positive impact on blueberry growth. The PC treatment exhibited a dual effect on plant growth by lowering the soil pH to 5.89 and maintaining soil moisture within the range of 26.33–35.20%. We observed distinct differences in soil inorganic nutrient content, with higher concentrations of organic matter, total nitrogen, and available P2O5 and K+, which positively influenced blueberry growth. Mulching treatments demonstrated superior physiological characteristics, with two classification models identifying stomatal conductance (gs) as a key parameter influencing treatment classification (VIP scores > 1 rank: 3, variable score rank: 1). The photochemical reflectance index (PRI) emerged as a major parameter among VIs, showing potential for measuring water stress (VIP scores > 1 rank: 2, variable score rank: 1). In the SWIR PLS-DA model, wavelength peaks were mainly observed in the O-H overtone (1410 nm, 1450 nm, 1930 nm, 1940 nm, and 2100 nm). Overall, crushed pinecones were found to positively impact the initial growth of blueberries by enhancing water status (plant respiration).

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Evapotranspiration and crop coefficients of Italian zucchini cultivated with recycled paper as mulch

Cited by 14 publications

References 34 publications

Water use of different weed species using lysimeter and NDVI

Water use of different weed species using lysimeter and NDVI

A Review of Irrigation Information Retrievals from Space and Their Utility for Users

Classification and Identification of Pinecone Mulching in Blueberry Cultivation Based on Crop Leaf Characteristics and Hyperspectral Data

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