Pub Date : 2022-04-19DOI: 10.21657/topraksu.1030604
T. Polat, A. Colak, M. Dayioglu, Halit Apaydin
{"title":"Developed for Hose Reel Irrigation Machines Determining Working Success of TURPO CLK FS Hardware","authors":"T. Polat, A. Colak, M. Dayioglu, Halit Apaydin","doi":"10.21657/topraksu.1030604","DOIUrl":"https://doi.org/10.21657/topraksu.1030604","url":null,"abstract":"","PeriodicalId":23175,"journal":{"name":"Toprak Su Dergisi","volume":"25 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2022-04-19","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"79079577","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2022-03-16DOI: 10.21657/topraksu.977238
Fahriye ÖCAL ÖZDAMAR, Gökçen Baysal Furtana, R. Tıpırdamaz, H. Duman
H 2 O 2 and NO are the key molecules of plant signaling and perception. In this study, we aimed at the antioxidant capacity of foliar-applied eggplant genotypes which shows different responses to salinity (Artvin: salt-sensitive; Mardin: salt-tolerant). For this purpose, H 2 O 2 and NO donor (SNP) were sprayed on the leaves of the seedlings for 2 days and then exposed to 100 mM NaCl for 10 days. The amount of Malondialdehyde (MDA), which increased with salt application and is the most important indicator of lipid peroxidation, decreased significantly with individual or combined pretreatments of H 2 O 2 and NO donors. SOD and CAT enzyme activities are affected by foliar spraying of donors. While CAT enzyme activity increased significantly with salt application in both genotypes, it showed a significant increase again with individual or combined application of donors. SOD enzyme activity, on the other hand, showed a minor increase in both genotypes with the application of salt stress, while it was significantly increased with the application of donors individually or together.
h2o2和NO是植物信号传导和感知的关键分子。在本研究中，我们针对叶施茄子的抗氧化能力进行了研究，这些基因型对盐度有不同的响应(Artvin:盐敏感;马尔丁省:耐盐)。为此，在幼苗叶片上喷洒h2o2和NO供体(SNP) 2 d，然后在100 mM NaCl中处理10 d。丙二醛(MDA)是脂质过氧化最重要的指标，随着盐的施用而增加，而单独或联合处理h2o2和NO供体显著降低。供体叶面喷施对SOD和CAT酶活性有影响。两种基因型的CAT酶活性均随着盐的施用而显著增加，但在单独或联合施用供体时，CAT酶活性再次显著增加。另一方面，两种基因型的SOD酶活性在盐胁迫处理下均有轻微升高，而在单独或共同施用盐胁迫下均有显著升高。
{"title":"H2O2 and NO mitigate salt stress by regulating antioxidant enzymes in in two eggplant (Solanum melongena L.) genotypes","authors":"Fahriye ÖCAL ÖZDAMAR, Gökçen Baysal Furtana, R. Tıpırdamaz, H. Duman","doi":"10.21657/topraksu.977238","DOIUrl":"https://doi.org/10.21657/topraksu.977238","url":null,"abstract":"H 2 O 2 and NO are the key molecules of plant signaling and perception. In this study, we aimed at the antioxidant capacity of foliar-applied eggplant genotypes which shows different responses to salinity (Artvin: salt-sensitive; Mardin: salt-tolerant). For this purpose, H 2 O 2 and NO donor (SNP) were sprayed on the leaves of the seedlings for 2 days and then exposed to 100 mM NaCl for 10 days. The amount of Malondialdehyde (MDA), which increased with salt application and is the most important indicator of lipid peroxidation, decreased significantly with individual or combined pretreatments of H 2 O 2 and NO donors. SOD and CAT enzyme activities are affected by foliar spraying of donors. While CAT enzyme activity increased significantly with salt application in both genotypes, it showed a significant increase again with individual or combined application of donors. SOD enzyme activity, on the other hand, showed a minor increase in both genotypes with the application of salt stress, while it was significantly increased with the application of donors individually or together.","PeriodicalId":23175,"journal":{"name":"Toprak Su Dergisi","volume":"23 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2022-03-16","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"75213284","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2022-03-15DOI: 10.21657/topraksu.1003635
Şerif Aktaş, Özge Doğanay Erbaş Köse, Y. M. Kardeş, Z. Mut
In the developing, changing and constantly renewing food and beverage sector, different nutrition trends are becoming more important day by day. One of these is the consumption of germinated legumes, which has attracted attention in the world recently and has many practitioners. The germination process is an effective process on the nutritional values of legumes and can make them even more valuable. The aim of this study was to determine the effects of germination time (3, 6, 9 days) on some nutritional and anti-nutritional contents contained in green lentils sprouts. Both sprouting period and cultivars significantly influenced the nutritional quality of lentil sprouts. The values of protein, starch, phytic acid, condensed tannins, total phenolic, total flavonoid, free radical scavenging activity contents of sprouting periods ranged between 26.4 (Raw) to 27.8% (9 day), 48.8 (raw) to 45.5% (9 day), 0.59 (6 days) to 1.09% (raw), 0.60 (3 days) to 0.77% (9 days), 3.97 (raw) to 10.24 mg GA/g (9 days), 0.55 (raw) 4.58 mg QE/g (9 days), 9.32 (raw) to 13.50% (9 day), respectively. The highest ash, Fe, Cu, Mn and Zn contents were obtained from raw grains with 2.76%, 5.96 mg/100g, 0.95 mg/100g, 1.34 mg/100g and 4.09 mg/100g values. Germination process improved quality of lentils by enhancing the nutritive value and digestibility of nutrients and reducing the anti-nutrients.
{"title":"The Effect of Different Germination Times on Some Nutritional and Anti-Nutritional Properties of Green Lentil Sprouts","authors":"Şerif Aktaş, Özge Doğanay Erbaş Köse, Y. M. Kardeş, Z. Mut","doi":"10.21657/topraksu.1003635","DOIUrl":"https://doi.org/10.21657/topraksu.1003635","url":null,"abstract":"In the developing, changing and constantly renewing food and beverage sector, different nutrition trends are becoming more important day by day. One of these is the consumption of germinated legumes, which has attracted attention in the world recently and has many practitioners. The germination process is an effective process on the nutritional values of legumes and can make them even more valuable. The aim of this study was to determine the effects of germination time (3, 6, 9 days) on some nutritional and anti-nutritional contents contained in green lentils sprouts. Both sprouting period and cultivars significantly influenced the nutritional quality of lentil sprouts. The values of protein, starch, phytic acid, condensed tannins, total phenolic, total flavonoid, free radical scavenging activity contents of sprouting periods ranged between 26.4 (Raw) to 27.8% (9 day), 48.8 (raw) to 45.5% (9 day), 0.59 (6 days) to 1.09% (raw), 0.60 (3 days) to 0.77% (9 days), 3.97 (raw) to 10.24 mg GA/g (9 days), 0.55 (raw) 4.58 mg QE/g (9 days), 9.32 (raw) to 13.50% (9 day), respectively. The highest ash, Fe, Cu, Mn and Zn contents were obtained from raw grains with 2.76%, 5.96 mg/100g, 0.95 mg/100g, 1.34 mg/100g and 4.09 mg/100g values. Germination process improved quality of lentils by enhancing the nutritive value and digestibility of nutrients and reducing the anti-nutrients.","PeriodicalId":23175,"journal":{"name":"Toprak Su Dergisi","volume":"29 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2022-03-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"78676405","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2021-08-24DOI: 10.21657/topraksu.984152
Sema Celik, Büşra Demi̇rbaş
This study was carried out to determine the utilization possibility of sea water in spinach plant cultivation, and to evaluate the effect on yield and growth parameters of spinach irrigated with sea water diluted at different rates. The experiment consists of 5 different irrigation water salinity. The tap water was taken as a control (T1; 0.33 dS/m), and 10% (T2;4 dS/m), 20% (T3; 7 dS/m), 30% (T4; 10 dS/m) and 40% (T5; 13 dS/m) rate of sea water diluted with tap water. According to results, the highest average fresh yield and dry matter values were obtained at T2 (%10) seawater treatment. Both T2 (10%) and T3 (20%) seawater treatments lead to increased fresh yields and dry matter compared to control conditions (T1). While using dilution 10% and %20 seawater for irrigation fresh yields increased approximately 27% and 8.5% respectively but when irrigated with 30% and 40% yields decreasing about 28% and 72% respectively. As with the yield results, the 4 dS/m seawater salinity level caused an increase in leaf heights and leaf number compared to the control treatment. In conclusion, this study shows that seawater can be used successfully when diluted 10% with good quality water without affecting the growth parameters and yields of spinach.
{"title":"Assessing Growth Performance and Yields of Spinach (Spinacia Oleracea L.) Irrigated with Sea Water","authors":"Sema Celik, Büşra Demi̇rbaş","doi":"10.21657/topraksu.984152","DOIUrl":"https://doi.org/10.21657/topraksu.984152","url":null,"abstract":"This study was carried out to determine the utilization possibility of sea water in spinach plant cultivation, and to evaluate the effect on yield and growth parameters of spinach irrigated with sea water diluted at different rates. The experiment consists of 5 different irrigation water salinity. The tap water was taken as a control (T1; 0.33 dS/m), and 10% (T2;4 dS/m), 20% (T3; 7 dS/m), 30% (T4; 10 dS/m) and 40% (T5; 13 dS/m) rate of sea water diluted with tap water. According to results, the highest average fresh yield and dry matter values were obtained at T2 (%10) seawater treatment. Both T2 (10%) and T3 (20%) seawater treatments lead to increased fresh yields and dry matter compared to control conditions (T1). While using dilution 10% and %20 seawater for irrigation fresh yields increased approximately 27% and 8.5% respectively but when irrigated with 30% and 40% yields decreasing about 28% and 72% respectively. As with the yield results, the 4 dS/m seawater salinity level caused an increase in leaf heights and leaf number compared to the control treatment. In conclusion, this study shows that seawater can be used successfully when diluted 10% with good quality water without affecting the growth parameters and yields of spinach.","PeriodicalId":23175,"journal":{"name":"Toprak Su Dergisi","volume":"43 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2021-08-24","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"88188003","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2021-08-16DOI: 10.21657/topraksu.972704
Zerrin Ci̇velek, N. Özdemi̇r
This study was carried out to determine the effects of wheat straw (WS), hazelnut husk (HH), humic acid (HA) and polyacrylamide (PAM) treatments on consistency limits (liquid limit (LL), plastic limit (PL), plasticity index (PI)) in two soils with sandy loam and clayey loam in texture. Soil samples used in the study were taken from two different areas of land (0-20 cm) from Samsun province's Bafra district. WS (0, 2%, 4%), HH (0, 2%, 4%), HA (0, 200 and 1000 ppm) and PAM (0, 30 and 90 ppm) were used in this study that was conducted in a split plots experimental design with three replications. According to the results; it was determined that the liquid limit, plastic limit and plasticity index values increased with the application of organic and synthetic conditioners in both soil texture, and the effect was realized as WS>HH>HA>PAM. It was observed that the highest dose application was the more effective in both soil texture, except for PAM.
{"title":"The Effect of Organic Waste and Synthetic Conditioner Applications on Consistency Limits","authors":"Zerrin Ci̇velek, N. Özdemi̇r","doi":"10.21657/topraksu.972704","DOIUrl":"https://doi.org/10.21657/topraksu.972704","url":null,"abstract":"This study was carried out to determine the effects of wheat straw (WS), hazelnut husk (HH), humic acid (HA) and polyacrylamide (PAM) treatments on consistency limits (liquid limit (LL), plastic limit (PL), plasticity index (PI)) in two soils with sandy loam and clayey loam in texture. Soil samples used in the study were taken from two different areas of land (0-20 cm) from Samsun province's Bafra district. WS (0, 2%, 4%), HH (0, 2%, 4%), HA (0, 200 and 1000 ppm) and PAM (0, 30 and 90 ppm) were used in this study that was conducted in a split plots experimental design with three replications. According to the results; it was determined that the liquid limit, plastic limit and plasticity index values increased with the application of organic and synthetic conditioners in both soil texture, and the effect was realized as WS>HH>HA>PAM. It was observed that the highest dose application was the more effective in both soil texture, except for PAM.","PeriodicalId":23175,"journal":{"name":"Toprak Su Dergisi","volume":"45 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2021-08-16","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"85086628","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2021-08-13DOI: 10.21657/topraksu.964798
Tülin Pekcan
{"title":"Studies of Fertilizers with Three Nutrients and Micronutrients on Conformity Drip Irrigation Systems","authors":"Tülin Pekcan","doi":"10.21657/topraksu.964798","DOIUrl":"https://doi.org/10.21657/topraksu.964798","url":null,"abstract":"","PeriodicalId":23175,"journal":{"name":"Toprak Su Dergisi","volume":"37 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2021-08-13","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"91517824","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2021-07-27DOI: 10.21657/topraksu.963463
Metin Türker
In this study, it is aimed to determine the current irrigation management and performance data in Uluırmak irrigation, to investigate the possibilities of expanding the irrigated areas in the network, and to calculate the optimum production patterns of agricultural enterprises. This study was carried out in 1995 and the results of this study were comparatively reviewed between 1995 and 2020 years. The data used in the study consists of primary data obtained from the surveys conducted with face-to-face interviews with a total of 72 enterprises in the region, determined by stratified sampling method. Linear programming method was used to determine the optimum production patterns according to the current situation in the irrigation basin and the expansion of irrigated areas. The average width of the farmland in the region is 74.42 decares (da), 47.75 da of which is irrigated agricultural land. After the planning made in accordance with the current conditions in the enterprises examined, wheat came to the plan with a maximum of 20.92 da, respectively, sugar beet (9.87 da), sunflower (5.89 da), beans (4.78 da), alfalfa (2.78 da), vegetables (2.89 da), and barley (1.12 da). In addition, the total gross profit of the enterprise reaches 445.4 TL, with 2.29 dairy cows (cultural hybrid) and 18.95 sheep coming to the plan in planned production. In case of the completion of the missing investments in the irrigation network and the expansion of the irrigated lands, the irrigated lands will increase by 33.33% and the gross profit will increase by 60.48% compared to the current situation and reach 472.4 TL. One of the important results of the study is that the average irrigated field land, which is 47.75 da, has increased to 64.20 da (34.45%) with the expansion of irrigated lands and planned water use.
{"title":"A Study on Expansion Possibilities of Irrigated Areas in Uluırmak Irrigation Basin and Production Planning According to Water","authors":"Metin Türker","doi":"10.21657/topraksu.963463","DOIUrl":"https://doi.org/10.21657/topraksu.963463","url":null,"abstract":"In this study, it is aimed to determine the current irrigation management and performance data in Uluırmak irrigation, to investigate the possibilities of expanding the irrigated areas in the network, and to calculate the optimum production patterns of agricultural enterprises. This study was carried out in 1995 and the results of this study were comparatively reviewed between 1995 and 2020 years. The data used in the study consists of primary data obtained from the surveys conducted with face-to-face interviews with a total of 72 enterprises in the region, determined by stratified sampling method. Linear programming method was used to determine the optimum production patterns according to the current situation in the irrigation basin and the expansion of irrigated areas. The average width of the farmland in the region is 74.42 decares (da), 47.75 da of which is irrigated agricultural land. After the planning made in accordance with the current conditions in the enterprises examined, wheat came to the plan with a maximum of 20.92 da, respectively, sugar beet (9.87 da), sunflower (5.89 da), beans (4.78 da), alfalfa (2.78 da), vegetables (2.89 da), and barley (1.12 da). In addition, the total gross profit of the enterprise reaches 445.4 TL, with 2.29 dairy cows (cultural hybrid) and 18.95 sheep coming to the plan in planned production. In case of the completion of the missing investments in the irrigation network and the expansion of the irrigated lands, the irrigated lands will increase by 33.33% and the gross profit will increase by 60.48% compared to the current situation and reach 472.4 TL. One of the important results of the study is that the average irrigated field land, which is 47.75 da, has increased to 64.20 da (34.45%) with the expansion of irrigated lands and planned water use.","PeriodicalId":23175,"journal":{"name":"Toprak Su Dergisi","volume":"83 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2021-07-27","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"89853493","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2021-07-26DOI: 10.21657/topraksu.927731
C. H. Yılmaz, Halil Aytop, Muhammet Raşit Sünbül
In this study, where the suitability of groundwater for irrigation in terms of soil and plants was evaluated, samples were taken from 11 drilling wells used for irrigation in some regions of Kahramanmaraş province. Chemical parameter values such as pH, EC, RSC, SAR, TDS, TH, Na%, PI, SSP, MR, KR, PS were determined in the assessment of irrigation water quality. According to irrigation water quality criteria, all samples except for two samples were in the medium salt/low sodium water (C2S1) class in terms of EC values. TH values were determined as soft water in all well waters. It was determined that the well waters were not suitable for irrigation in terms of plants and soils, including 3 in terms of Na%, SSP, MRI and KR values, 2 for Boron, SAR and RSC values, and one each for pH and PI values. As a result, these wells, which are evaluated problematic for soil and plants in terms of special ionic, salinity and alkalinity, should be used by taking the necessary precautions or should not be used for irrigation.
{"title":"Evaluation of Quality of Some Well Waters Used in Agricultural Irrigation in terms of Plant Nutrition","authors":"C. H. Yılmaz, Halil Aytop, Muhammet Raşit Sünbül","doi":"10.21657/topraksu.927731","DOIUrl":"https://doi.org/10.21657/topraksu.927731","url":null,"abstract":"In this study, where the suitability of groundwater for irrigation in terms of soil and plants was evaluated, samples were taken from 11 drilling wells used for irrigation in some regions of Kahramanmaraş province. Chemical parameter values such as pH, EC, RSC, SAR, TDS, TH, Na%, PI, SSP, MR, KR, PS were determined in the assessment of irrigation water quality. According to irrigation water quality criteria, all samples except for two samples were in the medium salt/low sodium water (C2S1) class in terms of EC values. TH values were determined as soft water in all well waters. It was determined that the well waters were not suitable for irrigation in terms of plants and soils, including 3 in terms of Na%, SSP, MRI and KR values, 2 for Boron, SAR and RSC values, and one each for pH and PI values. As a result, these wells, which are evaluated problematic for soil and plants in terms of special ionic, salinity and alkalinity, should be used by taking the necessary precautions or should not be used for irrigation.","PeriodicalId":23175,"journal":{"name":"Toprak Su Dergisi","volume":"44 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2021-07-26","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"74866329","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2021-06-14DOI: 10.21657/topraksu.898853
C. Gülser
In this study, effect of tobacco waste (TW) application on soil structural parameters and water holding capacity were determined in a clay field. Tobacco waste was applied into a clay soil surface (0 - 15 cm) with 4 different rates (0, 2, 4 and 6%) and three replications in a randomized plot design. After eight months, changes in soil organic carbon content, bulk density (BD), total porosity (F), gravimetric (W) and volumetric ( θ ) water content, air filled porosity (Fa) and relative saturation (RS) values were determined in clay soil for each treatment. TW application rates significantly increased organic C contents and F values while they significantly decreased bulk density values of the clay soil. Although the W values significantly increased over the control, the θ and RS values decreased with increasing the F values by the application of TW. The high application rates of TW (4 and 6%) increased moisture content at permanent wilting point (PWP) more than at field capacity (FC). Thus, AWC values in higher rates of TW were lower than the AWC values in 2% rate of TW and control treatments. Increasing Fa is important for plant root respiration and microbial activity especially in the clay soils. The high rates of TW increased F values but decreased the AWC of clay soil over the control treatment.
{"title":"Soil Structure and Moisture Constants Changed by Tobacco Waste Application in a Clay Textured Field","authors":"C. Gülser","doi":"10.21657/topraksu.898853","DOIUrl":"https://doi.org/10.21657/topraksu.898853","url":null,"abstract":"In this study, effect of tobacco waste (TW) application on soil structural parameters and water holding capacity were determined in a clay field. Tobacco waste was applied into a clay soil surface (0 - 15 cm) with 4 different rates (0, 2, 4 and 6%) and three replications in a randomized plot design. After eight months, changes in soil organic carbon content, bulk density (BD), total porosity (F), gravimetric (W) and volumetric ( θ ) water content, air filled porosity (Fa) and relative saturation (RS) values were determined in clay soil for each treatment. TW application rates significantly increased organic C contents and F values while they significantly decreased bulk density values of the clay soil. Although the W values significantly increased over the control, the θ and RS values decreased with increasing the F values by the application of TW. The high application rates of TW (4 and 6%) increased moisture content at permanent wilting point (PWP) more than at field capacity (FC). Thus, AWC values in higher rates of TW were lower than the AWC values in 2% rate of TW and control treatments. Increasing Fa is important for plant root respiration and microbial activity especially in the clay soils. The high rates of TW increased F values but decreased the AWC of clay soil over the control treatment.","PeriodicalId":23175,"journal":{"name":"Toprak Su Dergisi","volume":"37 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2021-06-14","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"86776811","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2021-03-30DOI: 10.21657/topraksu.752137
Pelin Alaboz, S. Demi̇r, Ahmet Ali Işıldar, Levent Başayiğit
The In recent years, it is expected that the plant obtains optimum benefit from irrigation applied to the soil since the increase of drought due to global warming and the decrease of water resources. That is why, The least limiting water range (LLWR) which is known as an index of the soil quality, draws considerable attention and is defined as the soil water content in which root development limited. In this study, LLWR values of surface soils of the orchards which intensive apple production was made in Boğazova plain, Eğirdir district Isparta province were determined. Spatial distribution of LLWR values, and relations of LLWR with some soil properties was investigated. The medium-fine texture group is dominant in the study and the SSA values of these soils varied between 6.59-19.27 %. LLWR values of soils; It showed statistically positive significant relationships with clay, organic matter and CaCO 3 , and negative with bulk density (P<0.05; P<0.01). The SSA distribution map created using the inverse distance weighting (IDW) spatial distribution method, the root mean square error (RMSE) was determined as 0.98 %. Soils, where LLWR is determined between 15-20 % range, are in the South of the study area and in the southwest of Eğirdir lake. LLWR is determined between 10-15 % range, were generally determined in the North where there are fine textured soils. It was determined that 80 % of these apple orchards, LLWR values were determinde at lower levels than optimum available water capacity as a result of aeration and/or compaction problems. As a result of the study, it was determined that the moisture content of the air filled pore volume is 10 % and the field capacity moisture contents are affected by the problems of aeration and compaction so that the LLWR changed significantly.
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