Soil Science and Plant Nutrition最新文献

{"title":"Interactive effect of parent material and topography on spatial variability of paddy soil material characteristics in the alluvial plain","authors":"R. Ito, J. Yanai, A. Nakao","doi":"10.1080/00380768.2022.2160623","DOIUrl":"https://doi.org/10.1080/00380768.2022.2160623","url":null,"abstract":"ABSTRACT To investigate the interactive effects of parent material and topography as soil forming factors, we examined the distribution of soil materials in an alluvial plain, where two types of surface geology were situated upstream and different parent materials supplied accordingly. We hypothesized that these two types of parent material make it possible to trace alluvial processes by analyzing their spatial distribution based on soil physicochemical properties. We collected 101 soil samples from the alluvial plain and nine soil samples from two types of unmixed upstream areas, i.e., granite and mélange. Particle size distributions and total concentrations of 32 elements were analyzed for spatial variabilities. Elemental composition of unmixed upstream samples and isarithmic maps of elemental composition of the soils in the alluvial plain based on geostatistical analysis revealed that gravel, coarse sand and total Na, Al, K, Ca, and Mn concentrations were higher at the southern part close to granite rock areas, whereas silt+clay content and total C, N, Mg, Ti, and Fe concentrations were higher at the northern part close to the mélange area, suggesting strong influence from parent material. In contrast, fine sand content and total P and Si concentrations showed west-east trends, suggesting topography effects reflecting particle size selection. Directional semivariograms suggest coarse sand and silt+clay content, as well as total C, N, Na, Mg, Al, K, Ca, Ti, and Mn concentrations were more strongly affected by parent material, whereas gravel and fine sand and total P concentration were more strongly affected by topography. Accordingly, the combination of elemental composition analysis and geostatistics revealed that the contribution of parent material and topography to total elemental contents in paddy surface soils in the alluvial plain varied among elements. In conclusion, evaluation of the interactive effects of parent material and topography on spatial variability of soil material characteristics enabled better understanding of soil formation processes and their potential fertility.","PeriodicalId":21852,"journal":{"name":"Soil Science and Plant Nutrition","volume":null,"pages":null},"PeriodicalIF":2.0,"publicationDate":"2022-12-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"78602472","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"农林科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Abstracts of Nippon Dojo-Hiryogaku Zasshi 93 - 5","authors":"","doi":"10.1080/00380768.2022.2153420","DOIUrl":"https://doi.org/10.1080/00380768.2022.2153420","url":null,"abstract":"Corn silage was grown yearly from 2007 to 2012 with three different fertilization treatments: one experimental plot was treated with chemical fertilizer (C) and the other two plots with organic fertilizers of composted cow manure (M) and slurry (S), respectively. A monolith-type capillary lysimeter packed with an undisturbed subsurface soil core of 20–70-cm depth and a diameter of 25 cm was buried below the plow layer in the field to measure leachate volume and inorganic N concentration. The simulated results using modified LEACHM showed a reasonably good agreement with the measured inorganic N concentration patterns, such as the magnitude and timing of peak N concentrations, in the three treatments despite the dif-ferences in the applied N sources. However, the performance of the model with respect to cumulative amounts of inorganic N leached yearly and/or during the whole experimental period varied between years and plots. Overall, the model was a valuable tool for predicting N leaching and examining various scenarios in corn silage fields treated with different N sources in this region. Future studies on separately determining the N mineralization rates of humus and crop residue, as well as the N transformation of composted manure and slurry, would be valuable in further improving the model’s prediction.","PeriodicalId":21852,"journal":{"name":"Soil Science and Plant Nutrition","volume":null,"pages":null},"PeriodicalIF":2.0,"publicationDate":"2022-12-14","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"72883338","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"农林科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"A low boron condition without high temperature stress induces internal browning in Raphanus sativus L. (Japanese radish)","authors":"Naoyuki Sotta, S. Niikura, Takehiro Kamiya, T. Fujiwara","doi":"10.1080/00380768.2022.2153346","DOIUrl":"https://doi.org/10.1080/00380768.2022.2153346","url":null,"abstract":"ABSTRACT Brown heart, or internal browning, is a physiological disorder in crops including radish. It is characterized by brown pigmentation in the internal tissue, which significantly reduces commercial value of the products. Field studies have revealed that the appearance of symptom is correlated with several stresses, including drought, high temperature, and boron deficiency. However, fluctuating and non-reproducible environmental factors in field experiments complicate the interpretation of the direct cause of the symptom. For studying the mechanism of the symptom, experiments under more controlled conditions with less fluctuating environmental factors are desirable. Here, we established culture method to observe brown heart in lab condition, where light, temperature, and nutrient is controlled. Under our culture conditions, we successfully observed internal browning in Japanese radish by lowering boron concentrations without heat and drought stresses, indicating that boron deficiency alone can cause internal browning. Furthermore, we cultured three cultivars and observed differences in susceptibility to internal browning, establishing that our culture method is applicable for studies that utilize inter-cultivar variations, such as QTL mapping.","PeriodicalId":21852,"journal":{"name":"Soil Science and Plant Nutrition","volume":null,"pages":null},"PeriodicalIF":2.0,"publicationDate":"2022-12-05","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"88601582","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"农林科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Predicting arbuscular mycorrhizal fungal colonization of soybean in farmers’ fields by using infection unit density","authors":"R. Ohtomo, S. Morimoto, K. Nagaoka, T. Karasawa, Takuji Nakamura, N. Oka","doi":"10.1080/00380768.2022.2153345","DOIUrl":"https://doi.org/10.1080/00380768.2022.2153345","url":null,"abstract":"ABSTRACT Estimating arbuscular mycorrhizal (AM) fungal activity to colonize crop root before cultivation is prerequisite for effective utilization of their functions which enhance growth and yield of the plant especially under low fertilizer input. We have hypothesized that the infection unit (IU) density formed on test plant roots grown for short period (12 days) with soil sampled from soybean production fields would be an effective indicator to predict AM fungal colonization intensity to the plant. In order to test this hypothesis, three-year farmland survey was conducted, in which soil samples before sowing soybean and the plant root samples at third trifoliate (V3) and full bloom (R2) stage were collected from farmers’ fields in two regions in Hokkaido, Iwamizawa and Tokachi. For each sampling spot, IU density was determined by using test plants, and intensity of AM fungal colonization of soybean root was measured. Before pursuing field survey, laboratory experiments were conducted to find out proper soil storage condition that keeps IU density unchanged while handling many soil samples. Our results indicated that IU density was almost comparable to the original value after six-month storage if soil samples were kept in a refrigerator, although storing at ambient temperature significantly decreased the measurement. Air drying also had negative impact on IU density. According to the field survey, IU densities determined using field soil were positively and significantly correlated with AM fungal colonization of soybean roots at both V3 and R2 stages. Differences in climate, soil type, and style of agriculture between Iwamizawa and Tokachi seemed to have little effect on IU density-AM fungal colonization relationship. Other than IU density, soil pH and soil penetration resistance at 10 cm depth were selected as significant explanatory variables for predicting AM fungal colonization by multiple regression analysis. However, IU density was the most influential factor among three. Therefore, IU density is recognized as an effective measure to evaluate AM fungal colonizing activity in field soil.","PeriodicalId":21852,"journal":{"name":"Soil Science and Plant Nutrition","volume":null,"pages":null},"PeriodicalIF":2.0,"publicationDate":"2022-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"90868694","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"农林科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Potassium balance in paddy fields under conventional rice straw recycling versus cow dung compost application in mixed crop–livestock systems in Japan","authors":"Thanh Tung Nguyen, Y. Sasaki, Misa Aizawa, K. Kakuda, Hiroshi Fujii","doi":"10.1080/00380768.2022.2141052","DOIUrl":"https://doi.org/10.1080/00380768.2022.2141052","url":null,"abstract":"ABSTRACT Potassium (K) fertilizer consumption in rice production has increased in developing countries where negative K balance was observed, but it has recently decreased in Japan. This situation raises a question of how K fertilization is managed in Japanese paddy fields and how it affects soil K balance and soil K status. Rice straw (RS) is a good source of K, and RS recycling after harvesting is a common practice in Japan. However, in mixed crop–livestock systems, RS is taken at harvesting time to use as the feed for cows and substituted with the application of cow dung compost (CDC) to the fields. We investigated soil K balance and soil K status in 8 (2017) and 10 (2018) pairs of adjacent RS- and CDC-treated fields in Mamurogawa, Yamagata, Japan. The K balance was calculated from K inputs (RS or CDC, fertilizer, and irrigation water) and K outputs (plant uptake and leaching). K fertilizer application varied widely in both treatments, with no significant difference between RS and CDC fields. K fertilizer was applied in amounts lower than those recommended for paddy rice in the study area in 56% of the fields in both treatments. The K balance was positive in most fields with RS recycling even if K fertilizer application was lower than recommended, but it was negative in half of the fields where RS was substituted with CDC. Most fields in the RS treatment had higher soil exchangeable K than the standard value for fertile soil. Therefore, K input through RS is sufficient for maintaining positive K balance, whereas K input in the CDC treatment from CDC or fertilizer may need to be increased to ensure positive K balance.","PeriodicalId":21852,"journal":{"name":"Soil Science and Plant Nutrition","volume":null,"pages":null},"PeriodicalIF":2.0,"publicationDate":"2022-11-02","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"79931751","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"农林科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Prediction of the soil properties of Malagasy rice soils based on the soil color and magnetic susceptibility","authors":"Hobimiarantsoa Rakotonindrina, N. Moritsuka, K. Kawamura, Y. Tsujimoto, T. Nishigaki, Haja Bruce Andrianary, T. Razafimbelo, H. Razakamanarivo, A. Andriamananjara","doi":"10.1080/00380768.2022.2136929","DOIUrl":"https://doi.org/10.1080/00380768.2022.2136929","url":null,"abstract":"ABSTRACT Accurate assessments of soil properties are required to improve fertilizer management practices for crop production. Conventional chemical analysis in the laboratory is costly and time-consuming. Soil color is related to different soil compositions, while soil magnetic susceptibility (MS) has been found to reflect the abundance of magnetic minerals relevant to soil properties. Improving proximal sensing techniques for the analysis of soil color and MS provides opportunities for affordable and rapid assessments of soil properties. The aim of this study was to evaluate the potential use of soil color parameters and MS values to predict soil properties using stepwise multiple linear regression (SMLR), random forest (RF), and nonlinear regression approaches in lowland and upland fields in the central highlands of Madagascar. The target properties included the contents of soil organic carbon (SOC), total nitrogen (TN), oxalate-extractable phosphorus and iron (Feox), and the soil texture. The model prediction accuracy was assessed using the coefficient of determination (R2), root-mean-square error (RMSE), and the ratio of performance to interquartile distance (RPIQ). The use of soil color parameters yielded an acceptable prediction accuracy of the Feox content (loge Feox) for all rice fields (R2 = 0.54, RMSE = 0.55, RPIQ = 1.70) using the RF algorithm, while the SMLR approach gave the most accurate prediction for upland fields with acceptable reliabilities for SOC, Feox, and clay and sand content prediction, with R2 ranging from 0.43 to 0.67 and RPIQ from 1.63 to 1.77. In lowland fields, TN content was predicted with acceptable accuracy (R2 = 0.34, RMSE = 0.49, RPIQ = 1.71) using SMLR with the color parameter. The combination of the soil color parameters with the MS value as predictor variables increased SOC prediction for lowland fields using the RF approach (R2 = 0.57, RMSE = 6.37, RPIQ = 1.96). Use of the soil color and MS parameters was revealed to be a promising way to simplify the assessment of soil properties in upland and lowland ecosystems by using RF and SMLR approaches. A combined use of the soil color and MS parameters improved the prediction accuracy for the SOC content.","PeriodicalId":21852,"journal":{"name":"Soil Science and Plant Nutrition","volume":null,"pages":null},"PeriodicalIF":2.0,"publicationDate":"2022-10-22","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"86857376","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"农林科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Cadmium in soils and potato tubers under grower management in two contrasting soil types of Hokkaido, Japan","authors":"M. Tani, Rintaro Kinoshita, D. Aiuchi, J. Palta","doi":"10.1080/00380768.2022.2137694","DOIUrl":"https://doi.org/10.1080/00380768.2022.2137694","url":null,"abstract":"ABSTRACT In Japan, little has been reported on cadmium (Cd) concentration in upland soils, and its relation to Cd concentration in crops and vegetables other than rice. Cd concentration in the surface soils and potato tubers of growers’ fields in two main potato production areas in Japan with contrasting soil types (Andisols and Inceptisols) was investigated. Soil and tuber samples were obtained from 90 growers’ fields with variable management histories. Total and Mehlich-3 soil Cd concentration were determined, and Cd concentration in the peeled potato tubers was also measured. A significant positive correlation was found between total Cd and phosphorous concentration in the soils reflecting the historical heavy application of phosphate fertilizer in both soil types. Although the total Cd concentration was much higher in Andisols, the Mehlich-3 Cd as well as tuber Cd concentration was lower in Andisols than in the Inceptisols, suggesting that Cd in Andisols may be specifically adsorbed by humic substances and amorphous clay minerals. The Cd concentration of the peeled potatoes in all samples was less than 100 μg kg−1 fresh weight below the threshold set by the Codex Alimentarius guidelines. The Cd concentration in the tubers tended to be higher when the soil phosphate retention index and base saturation were lower, and this tendency was stronger when both conditions are satisfied. Differences in soil properties and not the total soil Cd concentration were the dominant factor affecting potato tuber Cd accumulation. It is quite possible to reduce the amount of phosphate fertilizer appropriately to minimize the accumulation of Cd in both soil types as well as by increasing the soil base saturation to suppress the transfer of Cd from the soils to the potato tubers is especially important in the Inceptisols.","PeriodicalId":21852,"journal":{"name":"Soil Science and Plant Nutrition","volume":null,"pages":null},"PeriodicalIF":2.0,"publicationDate":"2022-10-18","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"86600778","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"农林科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Abstracts of Nippon Dojo-Hiryogaku Zasshi 93 - 3","authors":"Yoshinori, Takahashic","doi":"10.1080/00380768.2022.2132454","DOIUrl":"https://doi.org/10.1080/00380768.2022.2132454","url":null,"abstract":"572, 850, and 518 kg-CO 2 eq with high, medium, and low moisture content, respectively. Thus, with low moisture content, emissions were reduced by 9.4% and 39.1% compared with those when moisture content was high and medium, respectively. These results indicate that composting by actively mixing wheat straw into dairy manure to adjust moisture content can lead to swollen and softened compost and accelerated fermentation, which could help reduce greenhouse gas emissions from dairy farms. paddy sites. Comparison by landform revealed a wide variety of trends in soil-type differences, but specific trends, similar to those detected for land use, were not found. Thus, the nation-wide reformation into well-drained paddy fields has apparently lowered the position of the groundwater gley horizon, chan-ging Gley Lowland soils into other soil types, such as Gray Lowland soils. We propose that the present land-use type is an important factor for determining the degree of soil-type change from Gley Lowland soils to other soil types in paddy fields. of increased nitrogen supply and improved soil physical properties, such as air permeability, water retention, and water permeability, in the main root zone (0–40 cm) of onion plants. Onion yields were increased when the soil frost depth in the study fields was 23–37 cm. Considering a possible error of several centimeters in soil frost depth control, we recommend a target frost depth of 30 cm to improve the productivity of onion fields. However, in fields with high nitrogen fertility, soil frost depth control may result in excessive nitrogen supply. In such cases, growth suppression due to salt injury and damage from diseases, such as dry and soft rot, may occur, leading to lower onion yield. Therefore, proper nitrogen management might be required in fields in which soil frost depth is controlled. variables. Furthermore, nitrogen uptake from the panicle formation to full heading stages could be predicted using a multiple regression equation in which the amount of nitrogen in topdressing fertilizer and the amount of nitrogen applied to the surface soil were explanatory variables. These multiple regression equa-tions were adapted to calculate the optimum amounts of basic and topdressing fertilizer nitrogen. According to verifica-tion analysis conducted in a local producer’s field, the more that the amount of applied fertilizer deviated from the calculated amounts of basic and topdressing fertilizer estimated using our formula, the more that the nitrogen uptake from the transplantation to the panicle formation stage and the spikelet number deviated from the target ranges. Thus, the optimum spikelet number of Datemasayume can be obtained if the optimum nitrogen richness, calculated according to our formula, is provided using basic and topdressing fertilizers. significantly higher than that of Akitakomachi, and the rice root activity of Fusaotome was higher. At high temperature, the panicle temperature of Fusaotome was ","PeriodicalId":21852,"journal":{"name":"Soil Science and Plant Nutrition","volume":null,"pages":null},"PeriodicalIF":2.0,"publicationDate":"2022-10-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"79037545","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"农林科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Abstracts of Nippon Dojo-Hiryogaku Zasshi 93 - 2","authors":"Kazuki Togami, A. Takamoto, Tomoki Takahashi, S. Kumagai, T. Igarashi, H. Nakamoto, I. Goto, T. Yanagihara, K. Okazaki, Yuzo Manpuku, M. Hachinohe, Ryota Koyama, Yo Toma, T. Shinano","doi":"10.1080/00380768.2022.2132453","DOIUrl":"https://doi.org/10.1080/00380768.2022.2132453","url":null,"abstract":"Based on the fact that humus is dark and stable against micro-bial degradation, we hypothesized that stable humus content can be estimated by the soil carbon content predicted from spectral reflectance. Furthermore, the difference between the total carbon content and the predicted value can be attributed to easily-decomposable organic matter, representing available nitrogen. Thus, we suggest a new method to estimate available nitrogen based on total carbon content and spectral reflectance. To test this method, we conducted drone-based remote sensing using a four-wavelength multispectral camera at paddies, where livestock man-ure compost and rice straw has been continuously applied, and paddies where no organic matter has been added after puddling. Using spectral reflectance, the model tended to underestimate the predicted carbon content in such paddies. Coefficients of determination were higher in paddies without added organic matter, suggesting that the value predicted via spectral reflectance may measure stable humus. We found a significant correlation between the available nitrogen and the difference between the predicted value from the spectral reflectance and the total carbon content. This finding indicates that total carbon content and spectral reflectance can be used to estimate available nitrogen. Using both the spectral reflectance and the total carbon content in the predictive formula, the coefficient of determination increased from 0.70 to 0.90 in air-dried soil incubated for 4 weeks and from 0.45 to 0.74 in wet soil incubated for 10 weeks. The applicability of this method should be verified in different soil and humus types.","PeriodicalId":21852,"journal":{"name":"Soil Science and Plant Nutrition","volume":null,"pages":null},"PeriodicalIF":2.0,"publicationDate":"2022-10-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"90156759","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"农林科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Abstracts of Nippon Dojo-Hiryogaku Zasshi 93 - 4","authors":"M. Yoshimura, N. Oka, Kouichi Nagasawa, Kenji Maezuka, S. Morimoto, T. Tanahashi","doi":"10.1080/00380768.2022.2132455","DOIUrl":"https://doi.org/10.1080/00380768.2022.2132455","url":null,"abstract":"All farmers must understand quantitative productivity and the factors that are important to their farm fields for optimum crop management. This study attempted to esti-mate the soil quality index (SQI) of 61 winter wheat fields in Tokachi District, Hokkaido, over three years. It also examined the relationship between SQI and yield. SQI was estimated as a sum of weighted scores calculated from the value of each soil parameter (surface soil proper-ties), which were adopted as soil diagnostic criteria by the Hokkaido government. A lower score was given when the parameter values deviated from the criteria. The principal component analysis parameters selected for SQI estimation were exchangeable calcium, solid ratio, exchangeable potassium, macropore, and hot-water extractable boron in descending order of spatial variation. Among them, exchangeable calcium and macropore had the greatest impact on low SQI. A significant positive correlation was detected between SQI and yield in 2018, when productivity was low due to heavy rain in May and July, especially in Brown Lowland soils and Andosols with alluvial subsoil. In contrast, a weaker correlation between SQI and yield was detected in Andosols with a thick effective soil layer. This implies that soil should be sampled on an effective soil layer to calculate the SQI. Additionally, in a case where the field contains much gravel in the surface layer, gravel content should be considered because of yield overestima-tion by SQI. Conclusively, this study implied that yield decreased as SQI decreased in a low yield environment with heavy rain only if the field has a thin effective soil layer and less gravel on the surface layer. However, soil quality improvement might stabilize the annual yield var-iation. Moreover, the consideration of meteorological and crop managemental conditions is required to better understand the relationship between SQI and productivity.","PeriodicalId":21852,"journal":{"name":"Soil Science and Plant Nutrition","volume":null,"pages":null},"PeriodicalIF":2.0,"publicationDate":"2022-10-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"86241613","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"农林科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}