{"type": "FeatureCollection", "features": [{"id": "10.1016/j.catena.2021.105718", "type": "Feature", "geometry": null, "properties": {"updated": "2026-06-26T16:17:09Z", "type": "Journal Article", "created": "2021-09-11", "title": "Correlation of banana productivity levels and soil morphological properties using regularized optimal scaling regression", "description": "Soil morphological properties described in the field, such as texture, consistence or structure, provide a valuable tool for the evaluation of soil productivity potential. In this study, we developed a regression model between the soil morphological variables of banana plantations and a crop Productivity Index (PI) previously developed for the same areas in Venezuela. For this, we implemented categorical regression, an optimal scaling procedure in which the morphological variables are transformed into a numerical scale, and can thus be entered in a multiple regression analysis. The model was developed from data from six plantations growing \u201cGran Nain\u201d bananas, each with two productivity levels (high and low), in two 4-ha experimental plots, one for each productivity level. Sixty-three A horizons in thirty-six soils were described using 15 field morphological variables on a nominal scale for structure type, texture and hue, and an ordinal scale for the rest (structure grade, structure size, wet and dry consistence, stickiness, plasticity, moist value, chroma, root abundance, root size, biological activity and reaction to HCl). The optimum model selected included biological activity, texture, dry consistence, reaction to HCl and structure type variables. These variables explained the PI with an R2 of 0.599, an expected prediction error (EPE) of 0.645 and a standard error (SE) of 0.135 using bootstrapping, and EPE of 0.662 with a SE of 0.236 using 10-fold cross validation. Our study showed how soil quality is clearly related to productivity on commercial banana plantations, and developed a way to correlate soil quality indicators to yield by using indicators based on easily measured soil morphological parameters. The methodology used in this study might be further expanded to other banana-producing areas to help identify the soils most suitable for its cultivation, thereby enhancing its environmental sustainability and profitability.", "keywords": ["2. Zero hunger", "55 Geolog\u00eda y ciencias afines", "63 Agricultura.", "Biological activity", "Biological activities", "63 Agricultura", "04 agricultural and veterinary sciences", "15. Life on land", "55 Geolog\u00eda y ciencias afines.", "01 natural sciences", "630", "Dry consistence", "Sustainability", "Qualitative soil indicators", "Soil structure", "0401 agriculture", " forestry", " and fisheries", "Texture", "0105 earth and related environmental sciences"]}, "links": [{"href": "https://doi.org/10.1016/j.catena.2021.105718"}, {"rel": "related", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main/items/CATENA", "name": "related record", "description": "related record", "type": "application/json"}, {"rel": "self", "type": "application/geo+json", "title": "10.1016/j.catena.2021.105718", "name": "item", "description": "10.1016/j.catena.2021.105718", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main/items/10.1016/j.catena.2021.105718"}, {"rel": "collection", "type": "application/json", "title": "Collection", "name": "collection", "description": "Collection", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main"}], "time": {"date": "2022-01-01T00:00:00Z"}}, {"id": "10.1016/j.still.2021.105119", "type": "Feature", "geometry": null, "properties": {"updated": "2026-06-26T16:18:48Z", "type": "Journal Article", "created": "2021-06-30", "title": "The role of cover crops in the loss of protected and non-protected soil organic carbon fractions due to water erosion in a Mediterranean olive grove", "description": "Soil erosion plays an important role in C cycling at farm scale, especially in bare soil areas. In Mediterranean woody crops, temporary cover crops (CC) effectively reduce soil erosion and increase total and protected soil organic carbon (SOC) fractions. However, the effects of CC in olive groves on the preferential loss of organic carbon (Corg) fractions remains poorly understood. To address this issue, in four plots with seeded CC and two tilled plots (CT) in a Spanish olive grove, the unprotected and protected Corg fractions were measured in soil and sediments over the course of a hydrological year. The sediment/soil C enrichment ratios (ERSOC) were calculated, and results analysed considering the rainfall regimes of the site: dry (DS), heavy-rainy (HRS) and rainy (RS). Total, unprotected and protected Corg contents in the top 5 cm soil of CC plots were 46 %, 88.4 % and 28.5 %, respectively, higher than those of CT. 79.7 % and 70.3 % of the annual sediment yield (SY) was collected during December in CC and CT plots, respectively. Soil loss in CC plots ( = 9.2 Mg ha\u20131 yr\u20131) was significantly lower (\u221255.6 %) than that in CT plots. Despite that the average eroded Corg was higher in the CT ( = 222 kg C ha\u20131 yr\u20131) compared to CC ( = 148 kg C ha\u20131 yr\u20131) plots differences were not significant due to the higher Corg concentration in the sediment from CC plots. The highest proportion of eroded Corg (44%\u201345%) corresponded to the physically protected fraction. The highest ERSOC (1.99 and 2.04 for CC and CT, respectively) was recorded in DS whereas the lowest was in the RS (0.90) and HRS (0.96) seasons. The mean ERSOC were of 1.00 and 0.92 in the CC and CT plots, with no significant difference. The fact that most of the SY was recorded in one month, when CC plants were not fully developed, might explain the ERSOC at 1, and why their presence did not modify it. This study demonstrates that CC favours greater total, unprotected and protected Corg fractions in the topsoil, promoting soil C sequestration. The asynchrony between the periods of full development of the CC plants and those with the highest rainfall erosivity prevented any selectiveness of the eroded Corg. Thus, fast-growing CC plant species with short life-cycles are recommended, as well as adequate management to promote self-seeding avoiding soil disturbance for seeding in erosion prone seasons. This research has been supported by the Spanish Government (grants no. AGL2015-40128-C03-01 and PID2019-105793RB-I00), FEDER funds and the European Commission (SHui, grant no. 773903) and the H2020 PRIMA project SUSTAINOLIVE (grant no. 1811).", "keywords": ["2. Zero hunger", "55 Geolog\u00eda y ciencias afines", "550", "63 Agricultura.", "63 Agricultura", "Olive groves", "04 agricultural and veterinary sciences", "15. Life on land", "55 Geolog\u00eda y ciencias afines.", "630", "Spontaneous temporary cover crops", "Soil erosion", "Olive grove", "0401 agriculture", " forestry", " and fisheries", "SOC", "Carbon enrichment ratio"]}, "links": [{"href": "https://doi.org/10.1016/j.still.2021.105119"}, {"rel": "related", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main/items/Soil%20and%20Tillage%20Research", "name": "related record", "description": "related record", "type": "application/json"}, {"rel": "self", "type": "application/geo+json", "title": "10.1016/j.still.2021.105119", "name": "item", "description": "10.1016/j.still.2021.105119", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main/items/10.1016/j.still.2021.105119"}, {"rel": "collection", "type": "application/json", "title": "Collection", "name": "collection", "description": "Collection", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main"}], "time": {"date": "2021-09-01T00:00:00Z"}}, {"id": "10953/4139", "type": "Feature", "geometry": null, "properties": {"updated": "2026-06-26T16:28:35Z", "type": "Journal Article", "created": "2021-06-30", "title": "The role of cover crops in the loss of protected and non-protected soil organic carbon fractions due to water erosion in a Mediterranean olive grove", "description": "Soil erosion plays an important role in C cycling at farm scale, especially in bare soil areas. In Mediterranean woody crops, temporary cover crops (CC) effectively reduce soil erosion and increase total and protected soil organic carbon (SOC) fractions. However, the effects of CC in olive groves on the preferential loss of organic carbon (Corg) fractions remains poorly understood. To address this issue, in four plots with seeded CC and two tilled plots (CT) in a Spanish olive grove, the unprotected and protected Corg fractions were measured in soil and sediments over the course of a hydrological year. The sediment/soil C enrichment ratios (ERSOC) were calculated, and results analysed considering the rainfall regimes of the site: dry (DS), heavy-rainy (HRS) and rainy (RS). Total, unprotected and protected Corg contents in the top 5 cm soil of CC plots were 46 %, 88.4 % and 28.5 %, respectively, higher than those of CT. 79.7 % and 70.3 % of the annual sediment yield (SY) was collected during December in CC and CT plots, respectively. Soil loss in CC plots ( = 9.2 Mg ha\u20131 yr\u20131) was significantly lower (\u221255.6 %) than that in CT plots. Despite that the average eroded Corg was higher in the CT ( = 222 kg C ha\u20131 yr\u20131) compared to CC ( = 148 kg C ha\u20131 yr\u20131) plots differences were not significant due to the higher Corg concentration in the sediment from CC plots. The highest proportion of eroded Corg (44%\u201345%) corresponded to the physically protected fraction. The highest ERSOC (1.99 and 2.04 for CC and CT, respectively) was recorded in DS whereas the lowest was in the RS (0.90) and HRS (0.96) seasons. The mean ERSOC were of 1.00 and 0.92 in the CC and CT plots, with no significant difference. The fact that most of the SY was recorded in one month, when CC plants were not fully developed, might explain the ERSOC at 1, and why their presence did not modify it. This study demonstrates that CC favours greater total, unprotected and protected Corg fractions in the topsoil, promoting soil C sequestration. The asynchrony between the periods of full development of the CC plants and those with the highest rainfall erosivity prevented any selectiveness of the eroded Corg. Thus, fast-growing CC plant species with short life-cycles are recommended, as well as adequate management to promote self-seeding avoiding soil disturbance for seeding in erosion prone seasons. This research has been supported by the Spanish Government (grants no. AGL2015-40128-C03-01 and PID2019-105793RB-I00), FEDER funds and the European Commission (SHui, grant no. 773903) and the H2020 PRIMA project SUSTAINOLIVE (grant no. 1811).", "keywords": ["2. Zero hunger", "55 Geolog\u00eda y ciencias afines", "550", "63 Agricultura.", "63 Agricultura", "Olive groves", "04 agricultural and veterinary sciences", "15. Life on land", "55 Geolog\u00eda y ciencias afines.", "630", "Spontaneous temporary cover crops", "Soil erosion", "Olive grove", "0401 agriculture", " forestry", " and fisheries", "SOC", "Carbon enrichment ratio"]}, "links": [{"href": "https://doi.org/10953/4139"}, {"rel": "related", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main/items/Soil%20and%20Tillage%20Research", "name": "related record", "description": "related record", "type": "application/json"}, {"rel": "self", "type": "application/geo+json", "title": "10953/4139", "name": "item", "description": "10953/4139", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main/items/10953/4139"}, {"rel": "collection", "type": "application/json", "title": "Collection", "name": "collection", "description": "Collection", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main"}], "time": {"date": "2021-09-01T00:00:00Z"}}, {"id": "10953/4143", "type": "Feature", "geometry": null, "properties": {"updated": "2026-06-26T16:28:35Z", "type": "Journal Article", "created": "2021-09-11", "title": "Correlation of banana productivity levels and soil morphological properties using regularized optimal scaling regression", "description": "Soil morphological properties described in the field, such as texture, consistence or structure, provide a valuable tool for the evaluation of soil productivity potential. In this study, we developed a regression model between the soil morphological variables of banana plantations and a crop Productivity Index (PI) previously developed for the same areas in Venezuela. For this, we implemented categorical regression, an optimal scaling procedure in which the morphological variables are transformed into a numerical scale, and can thus be entered in a multiple regression analysis. The model was developed from data from six plantations growing \u201cGran Nain\u201d bananas, each with two productivity levels (high and low), in two 4-ha experimental plots, one for each productivity level. Sixty-three A horizons in thirty-six soils were described using 15 field morphological variables on a nominal scale for structure type, texture and hue, and an ordinal scale for the rest (structure grade, structure size, wet and dry consistence, stickiness, plasticity, moist value, chroma, root abundance, root size, biological activity and reaction to HCl). The optimum model selected included biological activity, texture, dry consistence, reaction to HCl and structure type variables. These variables explained the PI with an R2 of 0.599, an expected prediction error (EPE) of 0.645 and a standard error (SE) of 0.135 using bootstrapping, and EPE of 0.662 with a SE of 0.236 using 10-fold cross validation. Our study showed how soil quality is clearly related to productivity on commercial banana plantations, and developed a way to correlate soil quality indicators to yield by using indicators based on easily measured soil morphological parameters. The methodology used in this study might be further expanded to other banana-producing areas to help identify the soils most suitable for its cultivation, thereby enhancing its environmental sustainability and profitability.", "keywords": ["2. Zero hunger", "55 Geolog\u00eda y ciencias afines", "63 Agricultura.", "Biological activity", "Biological activities", "63 Agricultura", "04 agricultural and veterinary sciences", "15. Life on land", "55 Geolog\u00eda y ciencias afines.", "01 natural sciences", "630", "Dry consistence", "Sustainability", "Qualitative soil indicators", "Soil structure", "0401 agriculture", " forestry", " and fisheries", "Texture", "0105 earth and related environmental sciences"]}, "links": [{"href": "https://doi.org/10953/4143"}, {"rel": "related", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main/items/CATENA", "name": "related record", "description": "related record", "type": "application/json"}, {"rel": "self", "type": "application/geo+json", "title": "10953/4143", "name": "item", "description": "10953/4143", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main/items/10953/4143"}, {"rel": "collection", "type": "application/json", "title": "Collection", "name": "collection", "description": "Collection", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main"}], "time": {"date": "2022-01-01T00:00:00Z"}}], "links": [{"rel": "self", "type": "application/geo+json", "title": "This document as GeoJSON", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main/items?keywords=55+Geolog%C3%ADa+y+ciencias+afines.&f=json", "hreflang": "en-US"}, {"rel": "alternate", "type": "text/html", "title": "This document as HTML", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main/items?keywords=55+Geolog%C3%ADa+y+ciencias+afines.&f=html", "hreflang": "en-US"}, {"rel": "collection", "type": "application/json", "title": "Collection URL", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main", "hreflang": "en-US"}, {"type": "application/geo+json", "rel": "first", "title": "items (first)", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main/items?keywords=55+Geolog%C3%ADa+y+ciencias+afines.&", "hreflang": "en-US"}, {"rel": "last", "type": "application/geo+json", "title": "items (last)", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main/items?keywords=55+Geolog%C3%ADa+y+ciencias+afines.&offset=4", "hreflang": "en-US"}], "numberMatched": 4, "numberReturned": 4, "distributedFeatures": [], "timeStamp": "2026-06-27T11:22:05.794895Z"}