Asian Journal of Soil Science and Plant Nutrition最新文献

{"title":"Effects of Source and Rates of Potassium Fertilizer on Yield Traits and Potassium Use Efficiency of Potato in a Kenyan Ferralsol","authors":"Anthony O. Oketch, Jonah K. Ngeno, Lucas K. Ngode, Josiah C. Chiveu, Harrison Churu","doi":"10.9734/ajsspn/2023/v9i4201","DOIUrl":"https://doi.org/10.9734/ajsspn/2023/v9i4201","url":null,"abstract":"Aims: Potassium (K) is one of the nutrient elements taken up in large amounts by potatoes, yet there is little research output on K fertilization of the crop in Kenya, due to the assumption that its natural soil reserves are sufficient for the production of most crops. The study objective was to determine the influence of two K sources (muriate of potash – KCL and sulphate of potash – K2SO4) on K use efficiency and tuber yield components of potatoes in one agro-ecological zone of Kenya.&#x0D; Place and Duration of Study: The experimental site was the University of Eldoret farm in Kenya, located at latitude 0o574942’ N and longitude 35o300772’ E, during the middle - second rains season (S1) and middle rains season (S2) of 2020 and 2021 respectively.&#x0D; Methodology: Treatments were: 0 kg K ha-1 (control), 60,120,180 and 240 kg K ha-1 in S1 and 0, 30, 60, 90, 120 and 180 kg K ha-1 in S2, supplied in the form of KCL and K2SO4. Treatments were laid in a Randomized Complete Block Design in 2x5 and 2x6 factorial arrangements in S1 and S2 respectively. The potato variety planted was Destiny. Data collected included: Agronomic efficiency of K (AEK,), total tuber yield, two categories of seed yield (Size 1 tubers with diameters of 28- 45 mm; Size 2 tubers with 46 - 60mm diameter), total seed yield and ware yield (tubers with diameters over 60mm).&#x0D; Results: During the drier S1, the application of 120 kg K ha-1 in the form of K2SO4 significantly (P < .001) increased the yield of size 1 tubers, total seed yield and total tuber yield. The total tuber yield increment from this K rate was only 12.6 % of the varietal potential yield, and its AEK was 0.042 tonnes of tubers kg-1 K. Therefore its application may not be economically viable. During the moisture-sufficient S2, all K fertilizer treatments in the form of KCl and 90 kg K ha-1 in the form of K2SO4, contributed a yield increase of 58.1 - 68.6% and slightly exceeded varietal yield potential. Additionally, 30 kg K ha-1 of KCL gave the highest AEK of 0.5 tonnes of tubers kg-1 K and consistently enhanced the yield of all potato sizes, except size 1.&#x0D; Conclusion: Under similar ecological conditions as S2, potato farmers can achieve the highest AEK and potential tuber yield with the application of 30 kg K ha-1 of KCL. However, more trials on K nutrition in potatoes need to be done in diverse environments.","PeriodicalId":299553,"journal":{"name":"Asian Journal of Soil Science and Plant Nutrition","volume":"69 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-09-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"136280158","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}

{"title":"Influence of Charcoal, Manure and Fertilizer Soil Amendment on Growth of Grevillea robusta Nursery Seedlings","authors":"Shadrack Kinyua Inoti, Alice Adongo Onyango, Peter Murithi Angaine, Jesse Omondi Owino","doi":"10.9734/ajsspn/2023/v9i4200","DOIUrl":"https://doi.org/10.9734/ajsspn/2023/v9i4200","url":null,"abstract":"Soil amendment is vital especially in tree nurseries that are located away from the forest areas. Grevillea robusta seedlings are high nutrient demanders. An experiment was set up for a period of 8 months in 2021 at Egerton University, Njoro, Kenya to determine the effect of soil amendment on the early growth of Grevillea nursery seedlings. The experimental design was a CRD with 12 treatments replicated 3 times. The soil amendments included; manure, charcoal and artificial fertilizer combined with agricultural soil as well as their other combinations while forest soil was used as a check. The pot size was 9 by 12 cm in width and length respectively. Routine weeding and watering was done during the experimental period. The data was analyzed using SAS statistical package and the significance differences between means were separated using LSD at P<0.05. The results showed that forest soil and agricultural soil gave significantly (P < 0.05) the highest survival (84 and 81%) respectively compared with charcoal + manure + fertilizer combination (37%) which was the least. On the other hand, Forest soil had significantly (P < 0.05) the highest height (14.6cm) compared to all the other variables. Similarly, forest soil showed the highest root collar diameter (4.5 mm) which was significantly different from all the other variables measured except agricultural soil alone, agricultural soil + manure + fertilizer and agricultural soil + charcoal + manure which were similar. On the other hand, charcoal alone showed the highest root: shoot ratio (3.2), as well as root biomass which were significantly (P < 0.05) higher compared with agricultural soil + manure and charcoal + fertilizer. In conclusion, forest soil was superior in supporting the growth of both shoot, foliage and root collar diameter of grevillea seedlings. On the other hand, charcoal showed higher root to shoot ratio as well as root biomass. Forest soil is therefore recommended to be used in raising Grevillea nursery seedlings in areas nearby the forest. However, for areas located far away from the forest, a mixture of agricultural soil + manure + fertilizer or charcoal is recommended. Further research is recommended on using the same soil mixtures on other tree species which are less demanding in nutrient uptake.","PeriodicalId":299553,"journal":{"name":"Asian Journal of Soil Science and Plant Nutrition","volume":"33 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-09-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"135425024","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}

{"title":"Contribution of Cattle Dung as an Alternative to Mineral Fertilization of Soils in Tomato (Lycopersicom esculenta) Production","authors":"Konate Zoumana, Koffi Kouakou Stanislas, Kone Mamourou, Bakayoko Sidiky, Camara Maméri","doi":"10.9734/ajsspn/2023/v9i4199","DOIUrl":"https://doi.org/10.9734/ajsspn/2023/v9i4199","url":null,"abstract":"The use of chemical fertilizers, which in the long term constitutes a source of environmental degradation, has led farmers to use organic sources as alternative soil amendments. However, use of organic fertilizers alone may not restore the fertility of highly degraded soils, hence the need for the integration of organic and mineral fertilizers. The objective of the study was to improve soil fertility and tomato productivity. The study was carried out using a Fisher block design, with three replicates established on sandy soils. Treatments T0 (control treatment), Tpp (500 kg ha-1of NPK), T1 (40 kg ha-1of cattle dung + 167 kg ha-1of NPK), T2 (40 kg ha-1of cattle dung + 250 kg ha-1of NPK), T3 (40 kg ha-1of cattle dung + 375 kg ha-1of NPK), T4 (40 kg ha-1of cattle dung + 500 kg ha-1of NPK) and T5 (40 kg ha-1of NPK of cattle dung) were applied to elementary plots of 20 m2 (5 m x 4 m). Cattle dung was applied one week before transplanting was done. On the other hand, split application of mineral fertilizer was done at transplanting and at the start of flowering. The height of the plants, the circumference at the collar, the diameter of the fruits, the average number of fruits and weights of harvested fruits were evaluated on 4 plants of the effective plot. The results obtained revealed that the addition of cattle dung to the soil made it possible to reduce the quantities of chemical fertilizer commonly used by tomato producers. Thus, T3 treatment (40 kg/ha of cattle dung as a single contribution of basal fertilizer + 375 kg/ha of NPK), or ¾ of the dose of chemical fertilizer commonly applied by producers, made it possible to improve the agronomic parameters of the tomato and obtained the highest tomato yields (16292.25 kg/ha). The cattle dung combination at a dose of 40 kg/ha + 375 kg/ha of NPK 15 15 15 is therefore, the optimum dose to provide for better tomato production.","PeriodicalId":299553,"journal":{"name":"Asian Journal of Soil Science and Plant Nutrition","volume":"51 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-09-27","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"135536995","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}

{"title":"Varietal Response of Cola Species to Fertilizer Application on Field Establishment, Growth, Development and Canopy Characteristics","authors":"Famuwagun Idowu Babadele, Medinat Idowu Akeredolu, Olaiya Peter Aiyelari","doi":"10.9734/ajsspn/2023/v9i4198","DOIUrl":"https://doi.org/10.9734/ajsspn/2023/v9i4198","url":null,"abstract":"Responses of Cola nitida and Cola acuminata to NPK and Super-gro fertilizers on seedling development, field establishment, and canopy characteristics were investigated in 2019-2020. Seedlings of the two Cola species were transplanted as a randomized complete block design with three replications on the field. Fertilizer treatments were imposed and the shoot and root growth parameters of the cola were monitored for two growing seasons. From the results, application of NPK fertilizer positively enhanced leaf and stem branch development as well as canopy features of the cola species compared to super-gro and the control treatments. Seedling height and leaf area development were higher significantly through application of super-gro compared with other treatments. Seedlings establishment were enhances by the application of super-gro over NPK and the control plots. Leaf production, stem branch number, stem girth development and leaf area development in Cola nitida were significantly higher than in Cola acuminata. Cola acuminata seedlings height were significantly higher compare to Cola nitida during the two growing seasons. The interactions of fertilizers and crop species reveals that NPK and super–gro application significantly influenced leaf production in C acuminata over C nitida. Stem branch production in C acuminata was better significantly under the treatment of NPK than that of C nitida under super-gro and the control plots. Canopy development was significantly higher under Cola acuminata treated with Super-gro followed by NPK with the control having the least. Canopy development in Cola nitida were significantly lower compared with Cola acuminata across the fertilizer treatments.","PeriodicalId":299553,"journal":{"name":"Asian Journal of Soil Science and Plant Nutrition","volume":"128 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-09-11","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"135981520","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}

{"title":"Individual-Based Modelling for Predicting Dry Matter Accumulation in Juveniles of Indian Olive Raised under Different Soil Treatments","authors":"Mayank Tripathi","doi":"10.9734/ajsspn/2023/v9i4197","DOIUrl":"https://doi.org/10.9734/ajsspn/2023/v9i4197","url":null,"abstract":"Dry matter accumulation data for juvenile Indian Olive saplings was modelled using linear and non- linear regression models. The data was gathered bimonthly and for two years i.e., twelve readings. Linear, Quadratic, Power, Sigmoid, and Exponential models performed quite well for cumulative growth data (Adj. R2 > 0.93). The Sigmoid model (Chapman- Richard) demonstrated upper asymptotic values ranged between 179.96- 334.49 grams for all treatments (T0 – T4) suggesting that olive saplings responded positively to different soil treatments. Both, age and size dependent relative growth rates (RGRs) manifested low values and decrease in RGR curve. Age- dependent RGR displayed a smooth decline in function, indicating extended longevity. Low RGR (along with low Specific Leaf Area), is a characteristic feature of slow growing and evergreen species and this trait was observed in Indian Olive growth too. Size- standardized RGR revealed that due to the low rate of decline, T4 had the superior RGR (and maximum dry matter accumulation) followed by other treatments. Moreover, T0 had the sharpest decrease and the lowest dry matter accumulation. Cross- validation of model parameters exhibited statistical stability.","PeriodicalId":299553,"journal":{"name":"Asian Journal of Soil Science and Plant Nutrition","volume":"85 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-09-02","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"126267361","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}

{"title":"The Role of Zeolite and NPK Fertilizer on Maize (Zea mays L.) Growth in Inceptisol, Southern Solok District","authors":"Syafrul Affendi, Jamilah, Isril Berd, Sunadi, Widodo Haryoko, Zulman Harja Utama, Prima Novia","doi":"10.9734/ajsspn/2023/v9i4195","DOIUrl":"https://doi.org/10.9734/ajsspn/2023/v9i4195","url":null,"abstract":"The research objective was to determine the role of zeolite in increasing the efficiency of NPK fertilizer on the growth and yield of maize in Inceptisol Southern Solok. This research was conducted in July - November 2022, in Sangir District, Southern Solok Regency, West Sumatra with an elevation of 998 m above sea level, the soil type is Inceptisol, with a soil pH of 5.76, belonging to the slightly acidic. The experiment was arranged in a randomized block design with a factorial arrangement of treatments in 2 treatment factors. The 1st factor was the dose of zeolite from 0, 100 and 200 kg ha-1, the 2nd factor was NPK fertilizer (15-15-15) with a dose of; 100, 200, and 300 kg ha-1, arranged in 3 blocks. The data obtained was analyzed using the F test with a significance level of 5%, and then using the DNMRT follow-up test with a significance level of 5%. The parameters; soil pH, plant height, leaf area index, weight of 100 maize kernels, moisture content of 14%; and yield per hectare. The data obtained were presented in the form of tables and figures, establishing the interaction relationship between the two treatments in the form of graphs. The resulted was giving 100 kg ha-1 NPK was able to provide optimal NPK nutrient uptake, plant height and LAI at 54 DAP. The combination of 100 kg ha-1 zeolite and 200 kg ha-1 NPK provided optimal yields of dry shelled maize reaching 5.44 tonnes ha-1.","PeriodicalId":299553,"journal":{"name":"Asian Journal of Soil Science and Plant Nutrition","volume":"35 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-09-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"114402455","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}

{"title":"Effect of Indole Butyric Acid and Zinc Sulphate in Different Media on Rooting of Olive Cuttings","authors":"Muhammad Afzal, Hafsa Naeem, Muhammad Waqas, Isbah Akhtar, Razaullah, Imranullah, Sabeen Alam, Monaza Tehseen, Sanaullah","doi":"10.9734/ajsspn/2023/v9i4196","DOIUrl":"https://doi.org/10.9734/ajsspn/2023/v9i4196","url":null,"abstract":"Olive (Olea europaea L.) is an oil fruit crop with the physiological potential to survive and produce in rain-fed areas. In Pakistan, it is grown in upper Punjab and Baluchistan due to their climate suitability for better production. Due to the increasing trend of olive oil, peoples show more interest in planting disease-free plants for better oil production. The successful nursery of olives mainly depends on growth substrates with rooting hormones like Indole butyric acid. A recent study was conducted to observe the influence of growing substrate and combination of IBA with zinc sulphate during the vegetative stage of two cultivars of olive. Semi-hardwood olive cuttings were treated with indole butyric acid (IBA) at a level of 3000 ppm with zinc sulphate at 2000 ppm and 3000 ppm and cultured on various types of soil in pots under plastic tunnel conditions under completely randomized design with three factors and each treatment replicated thrice. Both varieties with all treatments significantly affect all traits. The maximum number of shoots were recorded in the media that contain sugarcane press mud with 3000ppm IBA and 3000ppm zinc sulphate that showed the maximum number of shoots (5. 66), branches (6. 66), shoot length (17. 01), number of roots (5. 33), root diameter (0. 23), plant survival percentage (73. 66) and root length (16. 86). In contrast, the minimum number of shoots (1. 0), branches (1. 00), shoot length (3. 77), number of roots (1. 00) root diameter (0. 01), plant survival percentage (44. 33), root length (4. 92) were observed in control media in cultivar Ottobrattica with the treatment of IBA at 3000 ppm+ zinc sulphate 2000 ppm. Results from all treatments revealed a favorable correlation between medium and IBA when combined with zinc sulphate for all measured growth parameters. The 50% sugarcane press mud, 50% silt soil with IBA 3000 ppm+ zinc sulphate 2000 ppm proved to be the best approach for better germination of olive cuttings in pots. The resulting outcomes play a significant role in the better germination percentage under dry climatic conditions. Analysis of variance was used to examine the data obtained (Statistix 8.1). The least significant test (LSD) was used to compare significant means at a 5% probability level.","PeriodicalId":299553,"journal":{"name":"Asian Journal of Soil Science and Plant Nutrition","volume":"28 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-09-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"115491443","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}

{"title":"Phytostimulatory Potential of Turan Biostimulant on the Growth and Yield of Brassica rapa subsp. chinensis (Pechay)","authors":"J. Adorada, Arlan L. Adorada, J. Recuenco-Adorada","doi":"10.9734/ajsspn/2023/v9i4193","DOIUrl":"https://doi.org/10.9734/ajsspn/2023/v9i4193","url":null,"abstract":"The growth and yield of pechay affected by Turan Biostimulant under field conditions were studied in Oogong, Sta. Cruz, Laguna Philippines to evaluate its effects and determine its best level for the optimum growth and yield of pechay. Turan is a patented high-analysis formulation with plant nutrients complexed by bioactive polyphenols that enhances nutrient availability to plants and provides a biostimulant effect to improve plant vitality and activate natural bio-defenses to protect the plant from stresses. There is a need for a plant food supplement that can promote quick nutrient absorption in the organic pechay production process, thus a randomized complete block design with four replications experiment was conducted.  Parameters such as total fresh yield, marketable yield, non-marketable yield, plant height, number of leaves, leaf width, and root length/biomass were gathered from a sample of 40 plants per treatment (10/rep) and analyzed using statistical methods. The study showed that the test product was able to slightly enhance pechay production in terms of total fresh yield, plant height, leaf length, leaf width, root length, and root biomass with an estimated increase of more than 1.18%, 1.06%, 1.04%, 1.03%, 1.13%, and 1.12%, respectively, compared to inorganic fertilizer application alone. In general, pechay is very responsive to granular fertilization and the application of Turan biostimulant. The findings also showed that the addition of a biostimulant would further enhance the amount and quality of harvested pechay. One and a half doses of Turan biostimulant, or even more, is strongly recommended in terms of its viability in pechay cultivation to maximize profits.","PeriodicalId":299553,"journal":{"name":"Asian Journal of Soil Science and Plant Nutrition","volume":"1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-08-21","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"131281198","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}

{"title":"Effect of Foliar Application of Boron, Zinc and Manganese on Growth, Yield and Oil Contents of Sunflower (Helianthus annuus L.)","authors":"Habiba Amin, Alimohammadian Habib, Muhammad Asif, Muhammad Umer Hameed, Muhammad Wassi, Muzammal Manzoor, G. Abbas, S. Nazeer, M. Sajjad","doi":"10.9734/ajsspn/2023/v9i4194","DOIUrl":"https://doi.org/10.9734/ajsspn/2023/v9i4194","url":null,"abstract":"A field trial was conducted to assess the effect of exogenously applied boron, zinc and manganese on growth, yield and oil contents of sunflower at Research Area, University of Agriculture, Faisalabad during Spring, 2019. Randomized Complete Block Design (RCBD) was used for the allocation of treatments with 3 replications. Seed was sown using dibbler on 75 cm apart ridges. Foliar treatments included T0= Control, T1= Water spray, T2= 0.6% boron (B), T3= 0.6% zinc (Zn), T4= 0.6% manganese (Mn), T5= 0.3% B+0.3% Zn, T6= 0.3% B+0.3% Mn, T7= 0.3% Zn+0.3% Mn and T8= 0.2% B+0.2% Zn+0.2% Mn). Boron, Zinc and Manganese were sprayed at 35 days and 55 days after sowing keeping Borax (H3BO3), Zinc Sulphate (ZnSo4) and Manganese Sulphate (MnSo4) as sources of B, Zn and Mn, respectively. Various phenological, physiological and agronomical traits were monitored and analysed. Spray of 0.2% B+0.2% Zn+0.2% Mn gave the high values of traits including number of achenes per head, 1000-achene weight (g), achene yield (kg ha-1), biological yield (kg ha-1), harvest index (%), oil yield (kg ha-1) and achene-oil content (%).","PeriodicalId":299553,"journal":{"name":"Asian Journal of Soil Science and Plant Nutrition","volume":"20 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-08-21","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"132963607","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}

{"title":"Effect of Integrated Nitrogen Managment on Growth and Yield of Okra at Sundarbazar, Lamjung, Nepal","authors":"Niraj K.C., Diwas Bhugai, K. B. Khatri, Prashant Rijal","doi":"10.9734/ajsspn/2023/v9i4192","DOIUrl":"https://doi.org/10.9734/ajsspn/2023/v9i4192","url":null,"abstract":"Integrated Nutrient Management (INM) is a crucial approach to improving the sustainable yield of crops in an environmentally friendly manner. In this study, a field experiment was conducted at Lamjung Campus, Sundarbazar, Lamjung, from March 2022 to June 2022 to evaluate the effect of integrated nitrogen management on the growth and yield parameters of okra and to find out the suitable nitrogen management system in okra. A randomized full-block design was utilized in the investigation, with seven treatments and three replications. The treatments consisted of a control (T1) and six other combinations of nitrogen sources, with each treatment receiving 50% of its nitrogen from chemical fertilizers and 50% from organic sources. The amount of organic manure was calculated based on the nitrogen content of the manures. Farmyard manure (FYM), poultry manure, vermicompost, mustard cake, and goat manure were tested as organic sources. The effect of treatment combinations was evaluated in terms of plant height, stem diameter, leaf numbers, days to first flower opening, days to first fruit maturity, number of pods per plant, length, and diameter of pods, and yield ha-1. The findings revealed that integrated nitrogen management strategies had a substantial impact on okra growth and output. Among all the treatments, 50% recommended N through chemical fertilizer + 50% N through poultry manure (T4), which gave the highest number of pods per plant (19.87), yield per ha (13.59 t/ha), and shortest days taken to first flowering (46.54 days) and plant height (54.80 cm), followed by T2, while the control treatment (T1) yielded the lowest. These findings suggest that the application of 50% recommended N through chemical fertilizer + 50% N through poultry manure is an effective strategy for obtaining a high yield of okra in the study area.","PeriodicalId":299553,"journal":{"name":"Asian Journal of Soil Science and Plant Nutrition","volume":"1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-08-18","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"130879372","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}