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Seasonal Incidence of Castor Sucking Pests in Southern Telangana Zone, India 印度南泰兰加纳地区蓖麻吸浆虫的季节性发生率
Pub Date : 2024-07-25 DOI: 10.9734/ijecc/2024/v14i74318
Navya E, Aruna Sri I, Duraimurugan P, Srinivasa Chary D
A study on the population dynamics of sucking pests of castor was conducted at the Indian Institute of Oilseeds Research (IIOR), Rajendranagar, Hyderabad, from November 2023 to March 2024. The sucking pest infestation was started from vegetative stage and continued till harvesting stage. The leafhopper incidence was started in 48th standard meteorological week (SMW) with population of 6.2 leafhoppers/three leaves/plant and reached peak in the 10th SMW with 74.8 leafhoppers/three leaves/ plant. Whitefly infestation was first observed in the 4th SMW with a population of 10.8whiteflies/top leaf/plant, with a peak population of 68.6 whiteflies /top leaf/ plant in the 13th SMW. Thrips infestation was started during the 52nd SMW with a population of 1.2 thrips spike-1, with a peak population of 32 thrips spike-1 in the 8th SMW. All pests showed significant positive correlations with maximum temperature, wind speed, and evaporation and significant negative correlations with morning and evening relative humidity. Specifically, whiteflies were positively correlated with minimum temperature, while leafhoppers and thrips showed no significant correlation with this factor. Leafhoppers and thrips populations were significantly positively correlated with sunshine hours, whereas whiteflies were not. Rainfall had a non-significant negative correlation with all the pest populations.
2023 年 11 月至 2024 年 3 月,在海德拉巴拉金德拉纳格尔的印度油籽研究所(IIOR)进行了一项关于蓖麻吸浆害虫种群动态的研究。吸浆害虫的侵扰从植株期开始,一直持续到收获期。叶蝉从第 48 个标准气象周(SMW)开始发生,叶蝉数量为 6.2 头/三片叶/株,在第 10 个标准气象周达到高峰,叶蝉数量为 74.8 头/三片叶/株。白粉虱的虫害在第 4 个施肥周首次出现,每株顶叶有 10.8 头白粉虱,在第 13 个施肥周达到峰值,每株顶叶有 68.6 头白粉虱。蓟马在第 52 个法定最低日开始为害,虫量为 1.2 头/穗-1,在第 8 个法定最低日达到峰值,虫量为 32 头/穗-1。所有害虫均与最高气温、风速和蒸发量呈显著正相关,与早晚相对湿度呈显著负相关。具体而言,粉虱与最低气温呈正相关,而叶蝉和蓟马与该因素无明显相关。叶蝉和蓟马的数量与日照时数呈显著正相关,而粉虱则不然。降雨量与所有害虫的数量都呈非显著负相关。
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引用次数: 0
Development of a Solar Powered Cooling System for Dairy Cattle Housing Structure 为奶牛舍结构开发太阳能冷却系统
Pub Date : 2024-07-25 DOI: 10.9734/ijecc/2024/v14i74316
Gowtham, K. V. Prakash, Devanand Maski, Sunil Shirwal, J. N. Sreedhara, G. V. S. Reddy, V. Raghavendra
A solar powered system was developed and installed to create optimum healthy environmental conditions inside the cattle house. The renewable energy-based gadgets such as solar panel, charge controller, time-controlled switch and accessories were used inside the cattle housing structure to create an optimum healthy environmental condition at University of Agricultural Sciences, Raichur, Karnataka, India. The improved cattle housing structure was capable to shelter for 10 pair cows (HF Deoni crossbred cows) with manger feed trough and urine collection system.   The solar panel (74 W) with DC pump, water fogging system, battery (12 V 22 Ah), charge controller, water tank (200 litre) and time-controlled switch were installed inside the dairy house. The solar panel acts as a power source for the operation of DC pump and time-controlled fogger system provides the fogging of water and created the cooling effect for cows. The fogging of water was not allowed to fall on the ground and evaporates in an open atmosphere. The diamond shaped wire mesh provided surrounding the cattle housing structure protected the cows from mosquito bite and other insects. The aim of the study was to maintain atmospheric temperature relatively 4 -50 C was less inside the housing structure and relative humidity at optimum condition was.
为在牛舍内创造最佳健康环境条件,开发并安装了太阳能供电系统。在印度卡纳塔克邦拉丘尔农业科学大学的牛舍结构中使用了太阳能电池板、充电控制器、时控开关和配件等可再生能源小工具,以创造最佳的健康环境条件。改进后的牛舍结构可容纳 10 对奶牛(HF Deoni 杂交奶牛),并配有饲料槽和尿液收集系统。 奶牛舍内安装了太阳能电池板(74 瓦)、直流水泵、水雾系统、蓄电池(12 V 22 Ah)、充电控制器、水箱(200 升)和时控开关。太阳能电池板为直流水泵的运行提供电源,时控雾化系统提供雾化水,为奶牛降温。雾化水不会落在地面上,而是在开放的环境中蒸发。牛舍周围的菱形铁丝网保护奶牛免受蚊虫叮咬。研究的目的是使牛舍内的大气温度保持在相对较低的 4-50 摄氏度,相对湿度保持在最佳状态。
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引用次数: 0
Crop Establishment, Residue Retention and Nutrient Management Influence the Phenology-mediated Greenhouse Gases Emission in an Intensive Rice-wheat System 作物种植、残留物保留和养分管理影响集约化水稻-小麦系统的物候期温室气体排放
Pub Date : 2024-07-24 DOI: 10.9734/ijecc/2024/v14i74314
S. R. Choudhury, C. Panda, Devashish Kumar, Pravesh Kumar, Anupam Das
The impact of management practices (i.e. crop establishment, tillage, residue addition etc.) on the global warming potential (GWP) and greenhouse gas intensity (GHGI) in rice-wheat cropping system accounting the economic viability is sparsely documented. A field experiment was established in 2020 to gain insight crop phonology mediated greenhouse gas emission into GWP, GHGI and economic viability on crop seasonal scale over three cycles (2020, 2021 and 2022) of rice-wheat rotations under subtropical climatic condition. Treatments were three planting techniques viz., System of rice intensification (SRI) followed by conventional wheat without residues (SRI-CW), Puddle Transplanted rice (TPR) followed by CW with 30% rice residue incorporation (TPR-CWRi) and zero-till direct sowing of rice (ZT-DSR) followed by ZT wheat with 30% rice residue retention (ZTDSR-ZTWRr) and four different nutrient management practices viz., 100% NPK (as per recommended dose) through mineral fertiliser (100% NPKi), 75% NPK through mineral fertiliser with 25% N trough organics (75% NPKi + 25%NOrg.), 50% NPK through mineral fertiliser with 50% N trough organics (50% NPKi + 50% NOrg.) was followed in both rice and wheat crop and 100% NPK through mineral fertiliser (100% NPKi) along with mung bean (Vigna radiata) green manure in rice and 100% NPK through mineral fertiliser in wheat (100% NPKi + GM). All treatments were established in a split-plot design and repeated three times; where three planting techniques were arranged in main plots and four different nutrient management practices were arranged in sub-plots. The highest system productivity was obtained under ZTDSR-ZTWRr treatment. Moreover, this system reduced the CH4 and N2O emission by 62.7 and 48% respectively over TPR-CWRi, hence, the Global Warming Potential (GWP), as well as gaseous intensity (GHGI), were reduced by 2.0-2.18 and 2.13-2.20 times, respectively than the traditional technique of cultivation. Green manure behaves differently by increasing the system productivity by 4.27% was and reducing the GHGI 4.56% over 100% NPKi. Thus, ZTDSR-ZTWRr along with 100% NPKi and green manuring in rice could be an economically viable opportunity for maintaining future yield standard of the system with lower emission scenario.
关于管理方法(即作物种植、耕作、秸秆添加等)对全球变暖潜势(GWP)和温室气体强度(GHGI)在水稻-小麦种植系统中的经济可行性的影响,很少有文献记载。2020 年进行了一项田间试验,以深入了解在亚热带气候条件下稻麦轮作的三个周期(2020 年、2021 年和 2022 年)内,作物语音学介导的温室气体排放在作物季节尺度上的全球升温潜能值、温室气体强度和经济可行性。处理方法包括三种种植技术,即水稻强化系统(SRI),然后是无残留的常规小麦(SRI-CW);水稻坑插秧(TPR),然后是含有 30% 水稻残留物的 CW(TPR-CWRi);水稻零耕作直播(ZT-DSR),然后是含有 30% 水稻残留物的 ZT 小麦(ZTDSR-ZTWRr);以及四种不同的养分管理方法,即:在水稻和小麦中采用了四种不同的养分管理方法,即通过矿物肥料施用 100%的氮磷钾(按建议剂量)(100% NPKi)、通过矿物肥料施用 75% 的氮磷钾并通过有机肥施用 25% 的氮(75% NPKi + 25%NOrg.)、通过矿物肥料施用 50% 的氮磷钾并通过有机肥施用 50% 的氮(50% NPKi + 50% NOrg.)。在水稻和小麦作物上采用的是 100% NPK(100% NPKi)和绿豆(Vigna radiata)绿肥,在小麦作物上采用的是 100% NPK(100% NPKi + GM)和矿物肥料。)所有处理均采用分小区设计,重复三次;主小区采用三种种植技术,子小区采用四种不同的养分管理方法。ZTDSR-ZTWRr 处理的系统生产力最高。此外,与 TPR-CWRi 相比,该系统的 CH4 和 N2O 排放量分别减少了 62.7% 和 48%,因此与传统种植技术相比,全球变暖潜势(GWP)和气体强度(GHGI)分别降低了 2.0-2.18 倍和 2.13-2.20 倍。绿肥的表现不同,与 100% NPKi 相比,绿肥的系统生产力提高了 4.27%,温室气体强度降低了 4.56%。因此,ZTDSR-ZTWRr 以及 100% NPKi 和绿肥在水稻中的应用是一个经济可行的机会,可以在较低的排放情况下保持系统未来的产量标准。
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引用次数: 0
A Comprehensive Review on Carbon Sequestration Potential and Addition of Organic Carbon to Soil 关于土壤固碳潜力和增加有机碳的全面综述
Pub Date : 2024-07-23 DOI: 10.9734/ijecc/2024/v14i74313
Pragya Pandey, V. J. Swaroopa, Kushal, Prem Lal Sahu, Bharti Parmar
Various soil management techniques can be used to sequester carbon in agricultural fields. With widespread implementation, these methods could sequester a substantial amount of carbon. For the purpose of removing carbon from the atmosphere and storing it in the soil, various management techniques exist. The efficacy of these tactics varies depending on the region, soil type, and climate. The longevity of soil sequestration and the ideal circumstances for maximising the reduction of carbon emissions remain topics of discussion. This essay examines the process by which soil stores carbon, the current status of soil carbon research, and the controversy surrounding the potential of soil carbon. It emphasises the numerous side advantages of raising soil carbon and provides a set of suggestions for further investigation. A substantial amount of soil organic carbon (SOC) might be sequestered by switching from conventional to conservation tillage, although this change would only have a long-term impact on tillage practices. Crop rotation based on legumes is more effective than that based on grass in converting biomass carbon to soil organic carbon. Rotational grazing lowers the overall quantity of CO2 released into the atmosphere while improving the quality of the grass. Producing biochar and incorporating it into soil is an additional strategy for storing carbon from the atmosphere.
各种土壤管理技术可用于农田固碳。随着这些方法的广泛实施,可以封存大量的碳。为了从大气中清除碳并将其储存在土壤中,有各种管理技术。这些方法的效果因地区、土壤类型和气候而异。土壤固碳的寿命以及最大限度减少碳排放的理想环境仍是讨论的话题。本文探讨了土壤储存碳的过程、土壤碳研究的现状以及围绕土壤碳潜力的争议。文章强调了提高土壤碳含量的诸多益处,并为进一步研究提出了一系列建议。从传统耕作转为保护性耕作可能会固存大量的土壤有机碳(SOC),尽管这种变化只会对耕作方式产生长期影响。在将生物质碳转化为土壤有机碳方面,以豆科植物为基础的轮作比以草为基础的轮作更有效。轮牧可降低释放到大气中的二氧化碳总量,同时提高草的质量。生产生物炭并将其融入土壤是从大气中储存碳的另一种策略。
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引用次数: 0
Exploring the Floral Biology of Salix alba: Insights into Reproductive Dynamics, Pollen Production and Pollen Morphology in Kashmir Himalayas 探索白柳的花生物学:洞察克什米尔喜马拉雅山的繁殖动力学、花粉生产和花粉形态学
Pub Date : 2024-07-22 DOI: 10.9734/ijecc/2024/v14i74312
Oyais Ahmad Wagay, J. A. Mugloo, T. Masoodi, N.A. Pala, Barkat Hussain, Imran Khan, M. I. Jeelani, G. M. Bhat, Jauhar Rafeeq
This study investigates the floral phenology, pollen production and pollen characteristics of Salix alba (white willow) over the years 2022 and 2023, highlighting inter-annual and individual tree variations. In 2022, male catkins began flowering between March 8 and March 10, while female catkins initiated between March 14 and March 22. Flowering for male catkins lasted until mid-May and for female catkins until late May. In 2023, male catkins started flowering from March 10 to March 14 and female catkins from March 17 to March 24, with similar flowering durations. Inflorescence diameters varied among individual trees, ranging from 4.4 mm to 7.7 mm for male catkins and 6.1 mm to 8.1 mm for female catkins across the two years. Pollen production exhibited significant variability with the highest recorded at 4,600,995,000 grains per tree and the lowest at 498,312,500 grains per tree. On average, trees produced approximately 2,164,836,667 pollen grains. Pollen viability ranged from 75% to 80%, with sizes between 16 µm and 26 µm. The pollen-ovule ratio also showed substantial differences, with the highest ratio observed at 7600:2 and the lowest at 2345:7. These findings underscore the considerable year-to-year and tree-to-tree variation in the reproductive traits of Salix alba, which may have implications for its breeding and conservation strategies.
本研究调查了白柳(Salix alba)在2022年和2023年的花期、花粉产量和花粉特征,突出强调了年际变化和树木个体差异。2022年,雄性柔荑花序在3月8日至3月10日期间开始开花,雌性柔荑花序在3月14日至3月22日期间开始开花。雄性柔荑花序的花期持续到 5 月中旬,雌性柔荑花序的花期持续到 5 月下旬。2023 年,雄性柔荑花序从 3 月 10 日至 3 月 14 日开始开花,雌性柔荑花序从 3 月 17 日至 3 月 24 日开始开花,花期相近。不同树木的花序直径各不相同,雄性柔荑花序的直径从 4.4 毫米到 7.7 毫米不等,雌性柔荑花序的直径从 6.1 毫米到 8.1 毫米不等。花粉产量变化很大,最高记录为每棵树 4,600,995,000 粒,最低记录为每棵树 498,312,500 粒。平均而言,每棵树产生了约 2,164,836,667 粒花粉。花粉存活率在 75% 到 80% 之间,大小在 16 微米到 26 微米之间。花粉与胚珠的比率也有很大差异,最高比率为 7600:2,最低比率为 2345:7。这些发现强调了白沙柳的繁殖性状在年与年之间以及树与树之间的巨大差异,这可能会对其育种和保护策略产生影响。
{"title":"Exploring the Floral Biology of Salix alba: Insights into Reproductive Dynamics, Pollen Production and Pollen Morphology in Kashmir Himalayas","authors":"Oyais Ahmad Wagay, J. A. Mugloo, T. Masoodi, N.A. Pala, Barkat Hussain, Imran Khan, M. I. Jeelani, G. M. Bhat, Jauhar Rafeeq","doi":"10.9734/ijecc/2024/v14i74312","DOIUrl":"https://doi.org/10.9734/ijecc/2024/v14i74312","url":null,"abstract":"This study investigates the floral phenology, pollen production and pollen characteristics of Salix alba (white willow) over the years 2022 and 2023, highlighting inter-annual and individual tree variations. In 2022, male catkins began flowering between March 8 and March 10, while female catkins initiated between March 14 and March 22. Flowering for male catkins lasted until mid-May and for female catkins until late May. In 2023, male catkins started flowering from March 10 to March 14 and female catkins from March 17 to March 24, with similar flowering durations. Inflorescence diameters varied among individual trees, ranging from 4.4 mm to 7.7 mm for male catkins and 6.1 mm to 8.1 mm for female catkins across the two years. Pollen production exhibited significant variability with the highest recorded at 4,600,995,000 grains per tree and the lowest at 498,312,500 grains per tree. On average, trees produced approximately 2,164,836,667 pollen grains. Pollen viability ranged from 75% to 80%, with sizes between 16 µm and 26 µm. The pollen-ovule ratio also showed substantial differences, with the highest ratio observed at 7600:2 and the lowest at 2345:7. These findings underscore the considerable year-to-year and tree-to-tree variation in the reproductive traits of Salix alba, which may have implications for its breeding and conservation strategies.","PeriodicalId":506431,"journal":{"name":"International Journal of Environment and Climate Change","volume":"18 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2024-07-22","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141815417","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}
引用次数: 0
Spatial and Temporal Trends in Precipitation and Temperature and their Influence on Groundwater in Ballia 巴利亚降水和温度的时空变化趋势及其对地下水的影响
Pub Date : 2024-07-22 DOI: 10.9734/ijecc/2024/v14i74311
Vijeta Singh, A. Sherring, Sumant Kumar, Shakti Suryavanshi, Prabhash Kumar Mishra
A study examined the impact of long-term pre- and post-monsoon precipitation and temperature on groundwater level fluctuations in 17 blocks of Ballia District. The study used 100 years of daily precipitation data (1917-2016) and 62 years of daily temperature data (1951-2012) from the Indian Meteorological Department. Seasonal analysis was performed using pre-monsoon, monsoon, post-monsoon, and winter data. The Mann-Kendall method and Sen's slope were applied. The spatial variability of rainfall and temperature was mapped using the IDW technique in ArcGIS. Significant annual precipitation decreases were found in Murlichapra and Sear blocks. Maniar and Pandah blocks showed precipitation increases. An increasing pre-monsoon trend was observed in several blocks, while post-monsoon trends varied. Groundwater levels fluctuated across Ballia, with a notable decrease of 2.1 m in Bairia Block from 2006 to 2016.
一项研究考察了巴利亚地区 17 个区块季风前后长期降水量和温度对地下水位波动的影响。研究使用了印度气象局提供的 100 年日降水量数据(1917-2016 年)和 62 年日温度数据(1951-2012 年)。利用季风前、季风、季风后和冬季数据进行了季节分析。采用了曼-肯德尔法和森斜率法。利用 ArcGIS 中的 IDW 技术绘制了降雨量和温度的空间变化图。发现 Murlichapra 和 Sear 区块的年降水量显著减少。马尼亚尔和潘达区块的降水量则有所增加。几个区块的季风前降水量呈上升趋势,而季风后的降水量则各不相同。巴利阿里耶各地的地下水位有所波动,2006 年至 2016 年,拜里亚区块的地下水位明显下降了 2.1 米。
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引用次数: 0
Physiological Performance of Different Rice Hybrids under Agroclimatic Conditions of Uttar Pradesh 北方邦农业气候条件下不同水稻杂交种的生理表现
Pub Date : 2024-07-20 DOI: 10.9734/ijecc/2024/v14i74310
K. Kumar, Vikram Singh
A field in the kharif season of 2021, a field experiment was conducted at Sam higginbottom University of Agricultural Technology And Sciences, Prayagraj, with the purpose of evaluating ten rice hybrids (UR-26, UR-27, UR-28, UR-29, UR-30, UR-31, UR-32, UR-33, UR-34, and UR-35) under Uttar Pradesh's agro-climatic conditions. The study aimed to assess their growth, productivity, and grain quality attributes.  The experiment addressed a gap in knowledge regarding which rice hybrids perform best in the specific agro-climatic conditions. By comparing these hybrids, the study sought to provide insights into selecting the most suitable varieties for maximizing agricultural productivity in the region. Among the hybrids evaluated, UR-32 demonstrated exceptional performance and exhibited superior grain quality characteristics including better hulling, milling, and head rice recovery rates. These results highlight UR-32 as a promising choice for farmers in Uttar Pradesh seeking to optimize both yield and grain quality during the kharif season.  In conclusion, the study not only filled a research gap by identifying the top-performing rice hybrid under Uttar Pradesh's agro-climatic conditions but also provided valuable data for enhancing agricultural practices and crop selection strategies in the region
普拉亚格拉杰(Prayagraj)的萨姆-希金博顿农业技术与科学大学(Sam higginbottom University of Agricultural Technology And Sciences)在 2021 年的旱季进行了一项田间试验,目的是评估北方邦农业气候条件下的十个水稻杂交种(UR-26、UR-27、UR-28、UR-29、UR-30、UR-31、UR-32、UR-33、UR-34 和 UR-35)。该研究旨在评估它们的生长、产量和谷物品质属性。 该试验填补了有关水稻杂交种在特定农业气候条件下表现最佳的知识空白。通过比较这些杂交种,该研究试图为选择最适合的品种以最大限度地提高该地区的农业生产力提供见解。在所评估的杂交品种中,UR-32 表现出了优异的性能,并表现出更优越的谷物品质特征,包括更好的脱壳率、碾米率和头米回收率。这些结果突出表明,对于北方邦的农民来说,UR-32 是一个很有前途的选择,因为他们希望在收获季节同时优化产量和谷物品质。 总之,这项研究不仅填补了研究空白,确定了北方邦农业气候条件下表现最好的水稻杂交种,还为加强该地区的农业实践和作物选择策略提供了宝贵的数据。
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引用次数: 0
Geospatial Techniques for Mapping Madapur Micro-Watershed Using GIS and Remote Sensing Techniques 利用地理信息系统和遥感技术绘制马达普尔小流域地图的地理空间技术
Pub Date : 2024-07-19 DOI: 10.9734/ijecc/2024/v14i74307
Vijayakumari Raveendra Channavar, Jagadeesh B R, M. Potdar, P. L. Patil, Chandrashekhar S S
Geographic Information Systems (GIS)-based land resource inventory (LRI) with high-resolution imagery is the most reliable tool for soil resource mapping. However, soil series-based mapping remains crucial for detailed soil studies in Madapur micro-watershed. A thorough geospatial analysis of land resources was conducted to support integrated land use planning efforts. This involves assessing various factors such as land cover, land use patterns, terrain features and soil characteristics. By adapting GIS and remote sensing data, soil maps were prepared for decision-making in land use planning initiatives, considering environmental sustainability, socio-economic factors and land resource availability. The research findings revealed the extent of soil erosion, gravel content, salinity levels, soil depth, soil pH and nutrient availability. In the moderately soil erosion category, the area covered 316 ha (65.67 %) followed by slightly erosion category covered 99 ha (20.56 %). Gravel content was prevalent, with 276 ha (57.39 %) falling into the gravelly category, while the remaining was non-gravelly. Salinity levels were low across the entire area with non saline. Soil depth in 278 ha (57.81%) area was very deep soil (>150 cm), while a significant portion 126 ha (26.16%) has moderately shallow depth (50-75 cm). The soil reaction is moderately alkaline, with 97.27 percent of the area showing this trait. Nitrogen deficiency is common, affecting 97.27 percent of the area with levels below 280 kg/ha. Phosphorus availability is moderate, ranging from 23 to 56 kg/ha. Potassium content is also moderate in 65.22% of the area, with levels between 140 and 330 kg/ha. Adequate levels of micronutrients like iron, copper and manganese were present, but zinc content was deficient. Despite soil limitations, a substantial portion (57.12%, 275 ha) is classified as good cultivable land with some soil limitations, suggesting potential for agricultural productivity with appropriate management practices.
基于地理信息系统(GIS)的土地资源清查(LRI)和高分辨率图像是绘制土壤资源图最可靠的工具。然而,基于土壤系列的制图对于马达普尔微流域的详细土壤研究仍然至关重要。对土地资源进行了全面的地理空间分析,以支持综合土地利用规划工作。这包括对土地覆盖、土地利用模式、地形特征和土壤特性等各种因素进行评估。通过调整地理信息系统和遥感数据,绘制了土壤地图,以便在考虑环境可持续性、社会经济因素和土地资源可用性的情况下,为土地利用规划举措提供决策依据。研究结果显示了土壤侵蚀程度、砾石含量、盐度、土壤深度、土壤 pH 值和养分供应情况。中度水土流失面积为 316 公顷(65.67%),轻度水土流失面积为 99 公顷(20.56%)。砾石含量较高,有 276 公顷(57.39%)属于砾石类,其余为非砾石类。整个地区的土壤盐碱度较低,不含盐。278 公顷(57.81%)区域的土壤深度非常深(>150 厘米),而相当一部分 126 公顷(26.16%)区域的土壤深度中等偏浅(50-75 厘米)。土壤呈中度碱性,有 97.27% 的面积呈现这一特征。缺氮现象普遍,97.27% 的地区缺氮,缺氮量低于 280 公斤/公顷。磷含量适中,从 23 千克/公顷到 56 千克/公顷不等。65.22% 的地区钾含量也适中,在 140 至 330 千克/公顷之间。铁、铜和锰等微量元素含量充足,但锌含量不足。尽管受到土壤条件的限制,但仍有相当一部分(57.12%,275 公顷)土地被归类为良好耕地,但也存在一些土壤条件限制,这表明采用适当的管理方法具有提高农业生产力的潜力。
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引用次数: 0
Seasonal Occurence of Major Insect Pests of Rice Grown in Krishna Delta Region of Andhra Pradesh 安得拉邦克里希纳三角洲地区水稻主要害虫的季节性发生情况
Pub Date : 2024-07-18 DOI: 10.9734/ijecc/2024/v14i74306
T. Hemanth, Ch. Sreenivasa Rao, D. S. Rani, G. B. Madhavi, D. Ramesh
The investigation on seasonal occurrence of major insect pests of rice grown in Krishna Delta of Andhra Pradesh was conducted during kharif 2023-24. Weekly observations on pest population in relation with abiotic factors revealed that the initial and peak incidence of yellow stem borer (YSB) as dead hearts was observed at vegetative stage during SMW 30 and SMW 38 with 0.30% and 5.56% respectively, whereas at reproductive stage the highest and lowest incidence in the form of white ears was observed after panicle emergence at SMW 44 and SMW 42 i.e., 0.33% and 2.20%, respectively. The highest rice leaf folder incidence was recorded at SMW 39 (9.21%) and lowest at SMW 44 (1.00%). The highest and lowest brown planthopper (BPH) mean population was recorded at SMW 39 and SMW 31 and it was 9.60 hoppers/hill and 0.20 hoppers/hill, respectively. On the other hand, highest and lowest white backed planthopper (WBPH) mean population was recorded during SMW 38 and SMW 32 and it was 3.70 and 0.40 hoppers/hill respectively. The YSB showed non-significant negative correlation with maximum temperature and rainfall, while showed non-significant positive correlation with minimum temperature, morning and evening relative humidity. The rice leaf folder population showed non-significant negative correlation with minimum temperature and non-significant positive correlation with maximum temperature, morning and evening relative humidity and rainfall. BPH population showed non-significant negative correlation with maximum and minimum temperature and rainfall, while it was non-significant positive correlation with morning and evening relative humidity. WBPH population showed significant positive correlation with morning relative humidity, non-significant positive correlation with maximum temperature and evening relative humidity and non-significant negative correlation with minimum temperature.
对安得拉邦克里希纳三角洲地区水稻主要害虫的季节性发生情况进行了调查。每周观察害虫数量与非生物因素的关系发现,在无性生长阶段,黄螟(YSB)的初始和高峰发生率分别为 0.30% 和 5.56%,表现为死心;而在生育阶段,最高和最低发生率分别为 0.33% 和 2.20%,表现为白穗,分别出现在出苗后的第 44 个和第 42 个工作周。稻纵卷叶螟发生率最高的是 SMW39(9.21%),最低的是 SMW44(1.00%)。褐飞虱(BPH)平均数量最高和最低分别出现在 SMW39 和 SMW31,分别为 9.60 头/丘和 0.20 头/丘。另一方面,白背飞虱(WBPH)的最高和最低平均数量分别出现在第 38 个和第 32 个法定最低日,分别为 3.70 头/丘和 0.40 头/丘。YSB 与最高温度和降雨量呈非显著负相关,而与最低温度、早晚相对湿度呈非显著正相关。稻纵卷叶螟种群数量与最低温度呈非显著负相关,与最高温度、早晚相对湿度和降雨量呈非显著正相关。BPH 种群与最高温度、最低温度和降雨量呈非显著负相关,与早晚相对湿度呈非显著正相关。WBPH 种群与早晨相对湿度呈显著正相关,与最高温度和傍晚相对湿度呈非显著正相关,与最低温度呈非显著负相关。
{"title":"Seasonal Occurence of Major Insect Pests of Rice Grown in Krishna Delta Region of Andhra Pradesh","authors":"T. Hemanth, Ch. Sreenivasa Rao, D. S. Rani, G. B. Madhavi, D. Ramesh","doi":"10.9734/ijecc/2024/v14i74306","DOIUrl":"https://doi.org/10.9734/ijecc/2024/v14i74306","url":null,"abstract":"The investigation on seasonal occurrence of major insect pests of rice grown in Krishna Delta of Andhra Pradesh was conducted during kharif 2023-24. Weekly observations on pest population in relation with abiotic factors revealed that the initial and peak incidence of yellow stem borer (YSB) as dead hearts was observed at vegetative stage during SMW 30 and SMW 38 with 0.30% and 5.56% respectively, whereas at reproductive stage the highest and lowest incidence in the form of white ears was observed after panicle emergence at SMW 44 and SMW 42 i.e., 0.33% and 2.20%, respectively. The highest rice leaf folder incidence was recorded at SMW 39 (9.21%) and lowest at SMW 44 (1.00%). The highest and lowest brown planthopper (BPH) mean population was recorded at SMW 39 and SMW 31 and it was 9.60 hoppers/hill and 0.20 hoppers/hill, respectively. On the other hand, highest and lowest white backed planthopper (WBPH) mean population was recorded during SMW 38 and SMW 32 and it was 3.70 and 0.40 hoppers/hill respectively. The YSB showed non-significant negative correlation with maximum temperature and rainfall, while showed non-significant positive correlation with minimum temperature, morning and evening relative humidity. The rice leaf folder population showed non-significant negative correlation with minimum temperature and non-significant positive correlation with maximum temperature, morning and evening relative humidity and rainfall. BPH population showed non-significant negative correlation with maximum and minimum temperature and rainfall, while it was non-significant positive correlation with morning and evening relative humidity. WBPH population showed significant positive correlation with morning relative humidity, non-significant positive correlation with maximum temperature and evening relative humidity and non-significant negative correlation with minimum temperature.","PeriodicalId":506431,"journal":{"name":"International Journal of Environment and Climate Change","volume":" 14","pages":""},"PeriodicalIF":0.0,"publicationDate":"2024-07-18","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141825840","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}
引用次数: 0
Construction and Standardization of Knowledge Test to Measure the Knowledge Level of Farmers on Rice Crop Cultivation 用于测量农民水稻种植知识水平的知识测试的构建与标准化
Pub Date : 2024-07-17 DOI: 10.9734/ijecc/2024/v14i74303
P. L. Prasanna, P. V. S. Gopal, P. Rambabu, K. Srinivasulu, V. S. Rao
A study was designed to develop a standardized test to measure the knowledge of rice farmers. Pertinent items covering every aspect of rice cultivation were collected with the help of subject matter specialists, progressive farmers, and scientists along with related literature. After getting experts opinion, items were subjected to difficulty index, discrimination index, correlation, reliability and validity. Items with 20-80 of difficulty level, items with 0.20-0.80 discrimination index and significant either at 1 percent or 5 percent level point in biserial correlation were selected and admitted to rice to measure knowledge level on rice cultivation. A total of 47 items were included in the final knowledge test to measure the knowledge level of farmers in rice cultivation.
我们设计了一项研究来开发标准化测试,以衡量稻农的知识水平。在主题专家、进步农民和科学家的帮助下,结合相关文献,收集了涉及水稻种植各个方面的相关项目。在征求专家意见后,对项目进行了难度指数、区分度指数、相关性、信度和效度测试。筛选出难度在 20-80 之间、区分度在 0.20-0.80 之间、双链相关在 1%或 5%水平点上显著的项目,并将其纳入水稻种植知识水平的测量中。最终的知识测试共包括 47 个项目,用于测量农民的水稻种植知识水平。
{"title":"Construction and Standardization of Knowledge Test to Measure the Knowledge Level of Farmers on Rice Crop Cultivation","authors":"P. L. Prasanna, P. V. S. Gopal, P. Rambabu, K. Srinivasulu, V. S. Rao","doi":"10.9734/ijecc/2024/v14i74303","DOIUrl":"https://doi.org/10.9734/ijecc/2024/v14i74303","url":null,"abstract":"A study was designed to develop a standardized test to measure the knowledge of rice farmers. Pertinent items covering every aspect of rice cultivation were collected with the help of subject matter specialists, progressive farmers, and scientists along with related literature. After getting experts opinion, items were subjected to difficulty index, discrimination index, correlation, reliability and validity. Items with 20-80 of difficulty level, items with 0.20-0.80 discrimination index and significant either at 1 percent or 5 percent level point in biserial correlation were selected and admitted to rice to measure knowledge level on rice cultivation. A total of 47 items were included in the final knowledge test to measure the knowledge level of farmers in rice cultivation.","PeriodicalId":506431,"journal":{"name":"International Journal of Environment and Climate Change","volume":" 4","pages":""},"PeriodicalIF":0.0,"publicationDate":"2024-07-17","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141828928","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}
引用次数: 0
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International Journal of Environment and Climate Change
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