Effects of Onion Residue, Bovine Manure Compost and Compost Tea on Soils and on the Agroecological Production of Onions

Orden, Luciano; Ferreiro, Nicolás; Satti, Patricia; Navas-Gracia, Luis M.; Chico-Santamarta, Leticia; Rodríguez, Roberto A.

doi:10.3390/agriculture11100962

Cited by 12 publications

(5 citation statements)

References 33 publications

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“…Primarily, soil salinity is related to low drainage capacity and soil cutting, which is associated with surface conditioning labors performed to obtain optimal water drainage. In general, the soils are Entic Hapludoll with sandy-to-sandy loam texture according to the USDA Soil Taxonomy classification [ 66 ], with levels of organic matter close to 2.3 % [ 67 ]. Due to its texture, water retention is low, and the risk of erosion is high.…”

Section: Methodsmentioning

confidence: 99%

Quantifying Irrigated Winter Wheat LAI in Argentina Using Multiple Sentinel-1 Incidence Angles

et al. 2022

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Synthetic aperture radar (SAR) data provides an appealing opportunity for all-weather day or night Earth surface monitoring. The European constellation Sentinel-1 (S1) consisting of S1-A and S1-B satellites offers a suitable revisit time and spatial resolution for the observation of croplands from space. The C-band radar backscatter is sensitive to vegetation structure changes and phenology as well as soil moisture and roughness. It also varies depending on the local incidence angle (LIA) of the SAR acquisition’s geometry. The LIA backscatter dependency could therefore be exploited to improve the retrieval of the crop biophysical variables. The availability of S1 radar time-series data at distinct observation angles holds the feasibility to retrieve leaf area index (LAI) evolution considering spatiotemporal coverage of intensively cultivated areas. Accordingly, this research presents a workflow merging multi-date S1 smoothed data acquired at distinct LIA with a Gaussian processes regression (GPR) and a cross-validation (CV) strategy to estimate cropland LAI of irrigated winter wheat. The GPR-S1-LAI model was tested against in situ data of the 2020 winter wheat campaign in the irrigated valley of Colorador river, South of Buenos Aires Province, Argentina. We achieved adequate validation results for LAI with RCV2 = 0.67 and RMSECV = 0.88 m2 m−2. The trained model was further applied to a series of S1 stacked images, generating temporal LAI maps that well reflect the crop growth cycle. The robustness of the retrieval workflow is supported by the associated uncertainties along with the obtained maps. We found that processing S1 smoothed imagery with distinct acquisition geometries permits accurate radar-based LAI modeling throughout large irrigated areas and in consequence can support agricultural management practices in cloud-prone agri-environments.

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Section: Methodsmentioning

confidence: 99%

Quantifying Irrigated Winter Wheat LAI in Argentina Using Multiple Sentinel-1 Incidence Angles

et al. 2022

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“…0.70 dS m −1 ; OM 1.35%; Not 0.35; and Pe 13 mg kg −1 (determinations were made in Soil and Water Laboratory-EEA INTA Ascasubi). The study area is considered an edaphoclimatic representative of BVCR [ 40 ].…”

Section: Methodsmentioning

confidence: 99%

Analysis of Biophysical Variables in an Onion Crop (Allium cepa L.) with Nitrogen Fertilization by Sentinel-2 Observations

et al. 2022

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The production of onions bulbs (Allium cepa L.) requires a high amount of nitrogen. According to the demand of sustainable agriculture, the information-development and communication technologies allow for improving the efficiency of nitrogen fertilization. In the south of the province of Buenos Aires, Argentina, between 8000 and 10,000 hectares per year−1 are cultivated in the districts of Villarino and Patagones. This work aimed to analyze the relationship of biophysical variables: leaf area index (LAI), canopy chlorophyll content (CCC), and canopy cover factor (fCOVER), with the nitrogen fertilization of an intermediate cycle onion crop and its effects on yield. A field trial study with different doses of granulated urea and granulated urea was carried out, where biophysical characteristics were evaluated in the field and in Sentinel-2 satellite observations. Field data correlated well with satellite data, with an R2 of 0.91, 0.96, and 0.85 for LAI, fCOVER, and CCC, respectively. The application of nitrogen in all its doses produced significantly higher yields than the control. The LAI and CCC variables had a positive correlation with yield in the months of November and December. A significant difference was observed between U250 (62 Mg ha−1) and the other treatments. The U500 dose led to a yield increase of 27% compared to U250, while the difference between U750 and U500 was 6%.

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“…Salah satu jenis pupuk organik yang mudah diserap oleh tanaman karena berbentuk cair yaitu teh kompos (Orden et al, 2021). Teh kompos adalah cairan yang dihasilkan dari ekstraksi nutrisi dan mikroorganisme yang terkandung dalam kompos (Abd-Alrahman & Aboud, 2021).…”

Section: Pendahuluanunclassified

Pertumbuhan dan hasil sawi pagoda yang dipupuk dengan berbagai kombinasi sumber kompos dan jenis kompos

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Nur,

Gofar

2023

J. AGRO

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Tatsoi is a popular vegetable in the community but has not been widely cultivated in South Sumatra. Compost tea is a type of liquid organic fertilizer that is easy to make and can increase plant growth and production. This study aimed to determine the best combination of source and type of compost to increase the tatsoi growth and yield. The research was conducted on May-August 2023 at the Experimental Garden of Faculty of Agriculture, Sriwijaya University. The research consisted of 2 factors designed in a Randomized Complete Factorial Design. The first factor was the source of compost, namely cow manure, chicken manure, goat manure, vermicompost, and oil palm empty fruit bunch compost. The second factor was the type of compost: solid compost, aerated compost tea 1:5 (b/v), aerated compost tea 1:10 (b/v), non-aerated compost tea 1:5 (b/v), and non-aerated compost tea 1:10 (b/v). Based on the research, the application of various types and sources of compost interacted significantly on the growth and yield of tatsoi, except on the number of leaves and root crown ratio variables. The combination of aerated chicken manure compost tea treatment with a ratio of 1:5 (b:v) was the best treatment in the cultivation of tatsoi in soil of lebak swamp.ABSTRAKSawi pagoda merupakan salah satu sayuran yang populer di masyarakat namun belum banyak dibudidayakan di Sumatera Selatan. Teh kompos adalah jenis pupuk organik cair yang mudah dibuat serta mampu meningkatkan pertumbuhan dan hasil tanaman. Penelitian ini bertujuan untuk mengetahui kombinasi terbaik sumber dan jenis kompos untuk meningkatkan pertumbuhan dan produksi sawi pagoda. Penelitian dilaksanakan pada bulan Mei-Agustus 2023 di Kebun Percobaan FP Universitas Sriwijaya. Penelitian terdiri dari dua faktor dalan Rancangan Acak Lengkap Faktorial (RALF). Faktor pertama adalah sumber kompos yaitu pupuk kandang sapi, pupuk kandang ayam, pupuk kandang kambing, vermikompos, dan kompos tandan kosong kelapa sawit. Faktor kedua adalah jenis kompos yaitu: kompos padat, teh kompos aerasi perbandingan 1:5 (b/v), teh kompos aerasi perbandingan 1:10 (b/v), teh kompos tanpa aerasi perbandingan 1:5 (b/v), dan teh kompos tanpa aerasi perbandingan 1:10 (b/v). Berdasarkan hasil penelitian, aplikasi berbagai jenis dan sumber kompos berinteraksi secara nyata terhadap pertumbuhan dan hasil sawi pagoda, kecuali pada peubah jumlah daun dan nisbah tajuk akar. Kombinasi perlakuan teh kompos kotoran ayam yang diaerasi dengan perbandingan 1:5 (b:v) merupakan perlakuan terbaik dalam budidaya tanaman sawi pagoda pada tanah asal rawa lebak.

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Effects of Onion Residue, Bovine Manure Compost and Compost Tea on Soils and on the Agroecological Production of Onions

Cited by 12 publications

References 33 publications

Quantifying Irrigated Winter Wheat LAI in Argentina Using Multiple Sentinel-1 Incidence Angles

Quantifying Irrigated Winter Wheat LAI in Argentina Using Multiple Sentinel-1 Incidence Angles

Analysis of Biophysical Variables in an Onion Crop (Allium cepa L.) with Nitrogen Fertilization by Sentinel-2 Observations

Pertumbuhan dan hasil sawi pagoda yang dipupuk dengan berbagai kombinasi sumber kompos dan jenis kompos

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