Journal of Agrometeorology最新文献_第3页

Comparison of machine learning classification algorithms based on weather variables and seed characteristics for the selection of paddy seed 基于天气变量和种子特性的机器学习分类算法在水稻选种方面的比较

Journal of Agrometeorology Pub Date : 2024-06-01 DOI: 10.54386/jam.v26i2.2553

Dhinakaran Sakthipriya, Chandrakumar Thangavel

引用次数: 0

Drought severity estimation using NDWI index in Parbhani district of Maharashtra 利用 NDWI 指数估算马哈拉施特拉邦 Parbhani 地区的干旱严重程度

Journal of Agrometeorology Pub Date : 2024-06-01 DOI: 10.54386/jam.v26i2.2540

PRITAM PATIL, M. P. Jagtap, K. K. Dakhore

引用次数: 0

Assessment of climate change impact on sorghum (Sorghum bicolor) production and adaptation strategies in the western zone of Tamil Nadu 评估气候变化对泰米尔纳德邦西部地区高粱（双色高粱）生产的影响及适应战略

Journal of Agrometeorology Pub Date : 2024-06-01 DOI: 10.54386/jam.v26i2.2536

P. Praveenkumar, N. Sathyamoorthy, GA. Dheebakaran, R. Karthikeyan

{"title":"Assessment of climate change impact on sorghum (Sorghum bicolor) production and adaptation strategies in the western zone of Tamil Nadu","authors":"P. Praveenkumar, N. Sathyamoorthy, GA. Dheebakaran, R. Karthikeyan","doi":"10.54386/jam.v26i2.2536","DOIUrl":"https://doi.org/10.54386/jam.v26i2.2536","url":null,"abstract":"This study examines the possible effects of climate change on sorghum in the western zone (WZ) comprising Coimbatore, Tirupur, and Erode districts of Tamil Nadu. The DSSAT crop simulation model was used to simulate sorghum yields with considering various planting dates and amounts of fertilizer application. The downscaled CCSM4 climate model data was utilized for the historical baseline period spanning from 1991 to 2020, as well as for future projected data from 2021 to 2099, under the RCP 4.5 scenarios. The key findings indicate that there is a projected yield decline range of -1.3% to 12.5% for the near century (2021-2040), -6.2% to -23.7% for the mid-century (2041-2070), and -12.6% to -30.5% for the end century (2071-2099). The sorghum yield experiences a high decrease at the end of the century (276.83 kg ha-1), mid-century (178.16 kg ha-1), and lastly in the near century (89.4 kg ha-1). The study revealed that a enhanced fertilizer application can have a minor positive effect on sorghum productivity. The study underscores the significant threat that climate change poses to food security in Tamil Nadu and emphasizes the need for adaptation strategies to protect agricultural productivity.","PeriodicalId":56127,"journal":{"name":"Journal of Agrometeorology","volume":"51 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2024-06-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141278165","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

Modelling of moisture movement and irrigation scheduling in drip irrigated tomato using CROPWAT and HYDRUS-1D 利用 CROPWAT 和 HYDRUS-1D 建立滴灌番茄的水分流动和灌溉调度模型

Journal of Agrometeorology Pub Date : 2024-06-01 DOI: 10.54386/jam.v26i2.2492

Nuzhat Bint Nazir, Yogesh Pandey, S. Qayoom, S. M. Dadhich

引用次数: 0

Crop-weather relationship of soybean in Marathwada region of Maharashtra 马哈拉施特拉邦马拉瓦达地区大豆的作物-天气关系

Journal of Agrometeorology Pub Date : 2024-06-01 DOI: 10.54386/jam.v26i2.2438

K. K. DAKHORE, Y. E. KADAM, D. R. KADAM, R. B. MANE, P. S. KAPSE, S. K. BAL

{"title":"Crop-weather relationship of soybean in Marathwada region of Maharashtra","authors":"K. K. DAKHORE, Y. E. KADAM, D. R. KADAM, R. B. MANE, P. S. KAPSE, S. K. BAL","doi":"10.54386/jam.v26i2.2438","DOIUrl":"https://doi.org/10.54386/jam.v26i2.2438","url":null,"abstract":"A long-term experiment was conducted during kharif seasons of2013 to 2020 at AICRP on Agrometeorology, VNMKV, Parbhani, to study the crop-weather relationship of soybean grown under four environments (27th SMW, 28th SMW, 29th SMW and 30th SMW) with three soybean varieties (MAUS-158, MAUS-71, and JS-335). Results indicated that soybean yield was significantly highest in (1541.4 kg ha-1) in the early sown crop, and it decreased with delay in sowing with the lowest yield (803.8 kg ha-1). Among the cultivars, MAUS-158 produced significantly the highest yield (1321.3 kg ha-1). Correlation analysis between weather parameters during different phases with the yield revealed that the vegetative and grain formation period of soybean were found to be the most sensitive to weather parameters, as the correlation coefficients with most of the weather parameters. Rainfall, number of rainy days, humidity and soil moisture had favorable effects while temperatures and sunshine duration had negative effects on the yield of soybean in the Marathwada region. Individual weather parameters during 50% flowering to maturity period could explain 40 to 55% variation in the soybean yield while the multiple regression developed all weather parameters during grain formation to physiological maturity period could explain up to 82% variation which could be used the predict the soybean yield in Marathwada region","PeriodicalId":56127,"journal":{"name":"Journal of Agrometeorology","volume":"7 4","pages":""},"PeriodicalIF":0.0,"publicationDate":"2024-06-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141281086","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

Microclimatic study under wheat, mustard and chickpea crops in western plain zone of Uttar Pradesh 北方邦西部平原区小麦、芥菜和鹰嘴豆作物的小气候研究

Journal of Agrometeorology Pub Date : 2024-03-01 DOI: 10.54386/jam.v26i1.2340

Abhishek Painkra, M. Shamim, H. V. Puranik, N. Ravisankar, Prakash Ghasal, Poonam Kashyap, A. K. Prusty, Debashish Dutta

{"title":"Microclimatic study under wheat, mustard and chickpea crops in western plain zone of Uttar Pradesh","authors":"Abhishek Painkra, M. Shamim, H. V. Puranik, N. Ravisankar, Prakash Ghasal, Poonam Kashyap, A. K. Prusty, Debashish Dutta","doi":"10.54386/jam.v26i1.2340","DOIUrl":"https://doi.org/10.54386/jam.v26i1.2340","url":null,"abstract":"The present study to quantify the variations in microclimate under wheat, mustard and chickpea crops was conducted at ICAR-Indian Institute of Farming Systems Research, Modipuram, Meerut (U.P.), India. Air temperature, relative humidity, CO2 concentration below and above the canopies of wheat, mustard and chickpea were recorded at hourly interval from 07:30 to 17:30 hours at different heights (0.5 m, 1.0 m and 2.0 m) from the ground. CO2 probes like GMP-343, (Diffusion aspiration) was used to record data of CO2 concentration and HPM-75 probes was used to capture the observation of air temperature and relative humidity. Results revealed that diurnal air temperature was continuously increasing from morning to afternoon hrs and highest air temperature was recorded at 13:30 hrs (afternoon). Thereafter, air temperature decreased and reached to the lowest at 17:30 hrs irrespective of crops and height from the ground. Analysis of diurnal air temperature variations at different height clearly showed that tall statured crop such as wheat and mustard reached higher air temperature regime early (13.30 hrs) compared to short statured crop like chickpea at 15.30 hrs. Highest relative humidity was observed at 07.30 hrs and lowest relative humidity was recorded either at 13:30 hrs or at 15:30 hrs. As per study maximum CO2 concentration was found at 07:30 hrs morning and minimum at 15:30 hrs. The lowest concentration of CO2 (624 ppm) was recorded from the chickpea field and highest from the mustard field (630 ppm) at the same point of observation during vegetative phase of crops.","PeriodicalId":56127,"journal":{"name":"Journal of Agrometeorology","volume":"115 39","pages":""},"PeriodicalIF":0.0,"publicationDate":"2024-03-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140088213","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

Spatiotemporal analysis of meteorological drought in El Niño years over Oromia region, Ethiopia 埃塞俄比亚奥罗米亚地区厄尔尼诺年气象干旱的时空分析

Journal of Agrometeorology Pub Date : 2024-03-01 DOI: 10.54386/jam.v26i1.2329

Gezahegn Mergia

{"title":"Spatiotemporal analysis of meteorological drought in El Niño years over Oromia region, Ethiopia","authors":"Gezahegn Mergia","doi":"10.54386/jam.v26i1.2329","DOIUrl":"https://doi.org/10.54386/jam.v26i1.2329","url":null,"abstract":"Drought is one of the most common natural disasters globally, having major impacts on environmental, economic, and social conditions and Ethiopia is no exception particularly the Oromia region. In order to evaluate and characterize the meteorological droughts associated with El Niño years over the Oromia region, the satellite data CHIRPS was used. The monthly time series data for the period from 1991 to 2020 was used for temporal and spatial analysis of meteorological drought using standardized precipitation index (SPI) across SPI3, SPI6, SPI9 and SPI12 indices using GeoCLIM, GIS, and Python tools. The results of this study show that meteorological droughts during the El Niño years indicated an increment across weak, moderate, and strong El Niño events over the Oromia region. The dryness was visualized with frequency and duration in time-scale across short-term drought indices in time steps. The time-scale temporal meteorological drought indices in three to twelve months show that the drought indices varied in magnitude, duration, and frequency in meteorological droughts. In general, the meteorological drought severity of correlation for the remaining zones analysis between SPI3 and SPI6, SPI6 and SPI12, and SPI9 and SPI12 indices was dominated by an increment of the correlation values over short to long timescales over the study area.","PeriodicalId":56127,"journal":{"name":"Journal of Agrometeorology","volume":" 17","pages":""},"PeriodicalIF":0.0,"publicationDate":"2024-03-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140090865","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

Rice brown planthopper, Nilaparvata lugens (Stål) feeding behavior in relation to elevated CO2 and temperature 水稻褐飞虱 Nilaparvata lugens (Stål) 的取食行为与升高的二氧化碳和温度的关系

Journal of Agrometeorology Pub Date : 2024-03-01 DOI: 10.54386/jam.v26i1.2519

V. Sunil, V. J. Lakshmi, K. Chiranjeevi, D. SANJEEVA RAO, M. SAMPATH KUMAR

{"title":"Rice brown planthopper, Nilaparvata lugens (Stål) feeding behavior in relation to elevated CO2 and temperature","authors":"V. Sunil, V. J. Lakshmi, K. Chiranjeevi, D. SANJEEVA RAO, M. SAMPATH KUMAR","doi":"10.54386/jam.v26i1.2519","DOIUrl":"https://doi.org/10.54386/jam.v26i1.2519","url":null,"abstract":"Feeding behavior of brown planthopper, Nilaparvata lugens (Stål) populations collected from different geographical regions Ludhiana, Nalgonda and West Godavari at three generations 1, 5 and 10 fed on rice plants grown under different CO2 and temperature levels 1) Ambient CO2@ 380±25ppm + ambient temperature (aCO2+aT), 2) Elevated CO2@500±25ppm + ambient temperature (eCO2+aT) and 3) Elevated CO2@500±25ppm + elevated temperature (eCO2+eT) in closed CO2 chambers was studied. Elevated CO2 + elevated temperature increased feeding rate of BPH nymphs while BPH adults showed declined feeding rate. BPH nymphal feeding rate increased with progressive generations while it decreased in BPH adults. Ludhiana adult BPH population showed higher honeydew excretion compared to West Godavari and Nalgonda populations. CO2 + temperature levels at progressive generations have varying effects on adults and nymphs of three BPH populations. Biochemical composition of rice plants grown under different CO2 levels revealed increased rate of soluble sugars, phenols and decreased rate of reducing sugars, soluble proteins, free amino acids, nitrogen, potassium, phosphorous in elevated CO2 + elevated temperature levels compared to ambient conditions. Increased feeding rate of BPH under elevated CO2 levels may be to compensate changes in host plant quality i.e., high soluble sugars and low nitrogen.","PeriodicalId":56127,"journal":{"name":"Journal of Agrometeorology","volume":" 8","pages":""},"PeriodicalIF":0.0,"publicationDate":"2024-03-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140091815","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

Impact of climate change on runoff and potential evapotranspiration in Brahmani basin, Odisha, India 气候变化对印度奥迪沙邦布拉马尼盆地径流和潜在蒸散量的影响

Journal of Agrometeorology Pub Date : 2024-03-01 DOI: 10.54386/jam.v26i1.2489

Sonali Swagatika, J. C. Paul, D. M. Das, S. K. Raul, A. P. Sahu

引用次数: 0

Extraction of MODIS land surface temperature and its validation over Samastipur district of Bihar 比哈尔邦萨马蒂普尔地区的 MODIS 陆面温度提取及其验证

Journal of Agrometeorology Pub Date : 2024-03-01 DOI: 10.54386/jam.v26i1.2279

RAJESH G. M., SUDARSHAN PRASAD

引用次数: 0