The study was conducted at the Department of Soil Science and Agricultural Chemistry to collect geo-referenced soil and water samples, analyze their soil physico-chemical properties, and quality parameters, and prepare thematic maps to suggest suitable management practices. The soils were slightly calcareous and non-saline. The available N, P and K status were low, medium and high respectively, with low to moderate OC content. The available Ca, Mg and S status of the soil were high and medium to high, respectively. The DTPA-Zn values and DTPA-Fe values were deficient DTPA Cu and DTPA-Mn values were sufficient in the farm soils. The HWS boron values were sufficient. The water samples of the farm had neutral to slightly above neutral pH, and the EC of the water sample ranges from 0.63 to 4.08 dS m-1. The chloride content of the water sample ranged from 2.00 to 22.80 meq L-1. There was no CO3 2- and SO4 2- contents observed in water. SAR value of samples lies between 1.51 and 4.19 and the adjusted SAR value varies from 2.87 to 10.48 indicating good quality of water samples
{"title":"Mapping Spatial Variability of Soil Physico-Chemical Properties and Available Nutrient Status and Assessment of Irrigation Water Quality of ICAR-KVK Farm, Pongalur","authors":"Jawahar Durairaj, Sivakumar K, Renuka Devi a","doi":"10.29321/maj.10.200001","DOIUrl":"https://doi.org/10.29321/maj.10.200001","url":null,"abstract":"The study was conducted at the Department of Soil Science and Agricultural Chemistry to collect geo-referenced soil and water samples, analyze their soil physico-chemical properties, and quality parameters, and prepare thematic maps to suggest suitable management practices. The soils were slightly calcareous and non-saline. The available N, P and K status were low, medium and high respectively, with low to moderate OC content. The available Ca, Mg and S status of the soil were high and medium to high, respectively. The DTPA-Zn values and DTPA-Fe values were deficient DTPA Cu and DTPA-Mn values were sufficient in the farm soils. The HWS boron values were sufficient. The water samples of the farm had neutral to slightly above neutral pH, and the EC of the water sample ranges from 0.63 to 4.08 dS m-1. The chloride content of the water sample ranged from 2.00 to 22.80 meq L-1. There was no CO3 2- and SO4 2- contents observed in water. SAR value of samples lies between 1.51 and 4.19 and the adjusted SAR value varies from 2.87 to 10.48 indicating good quality of water samples","PeriodicalId":18154,"journal":{"name":"Madras Agricultural Journal","volume":"24 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"135212869","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}
Field experiments were conducted during pishanam 2015 and 2016 at Central Farm, Agricultural College and Research Institute, Killikulam. The experiment was laid out in a factorial randomized block design with three replications. Experimental treatments comprised of three irrigation scheduling and three bed widths. Rice crop was raised under furrow furrow-irrigated raised bed system (FIRB) system. Response of the crop to the different treatments indicated that growth parameters viz., plant height and Dry Matter Production (DMP) were highest in crop raised in bed width of 1.0 m accommodating five rows per bed and irrigating the crop daily. Raised bed of 1.0 m bed width accommodating five rows per bed and irrigating crop daily resulted in higher grain yield (3874 and 3789 kg ha-1 during 2015 and 2016, respectively) and Water use Efficiency (4.39 and 4.24 kg ha-1 mm-1 during 2015 and 2016, respectively) than other irrigation scheduling and land configurations
2015年和2016年pisanam期间，在Killikulam农业学院和研究所的中央农场进行了现场试验。试验采用因子随机区组设计，设3个重复。试验处理包括三个灌溉计划和三个床宽。水稻采用垄沟灌溉垄沟床系统(FIRB)进行栽培。作物对不同处理的响应表明，在床宽1.0 m、每床5行、每天灌溉的条件下，作物的生长参数(即株高和干物质产量)最高。垄作床宽1.0 m，每床5行，每天灌溉作物，其粮食产量(2015年和2016年分别为3874和3789 kg ha-1)和水分利用效率(2015年和2016年分别为4.39和4.24 kg ha-1 mm-1)高于其他灌溉调度和土地配置
{"title":"Optimizing Irrigation Scheduling and Land Configurations of Furrow Irrigated Aerobic Rice","authors":"","doi":"10.29321/maj.10.200012","DOIUrl":"https://doi.org/10.29321/maj.10.200012","url":null,"abstract":"Field experiments were conducted during pishanam 2015 and 2016 at Central Farm, Agricultural College and Research Institute, Killikulam. The experiment was laid out in a factorial randomized block design with three replications. Experimental treatments comprised of three irrigation scheduling and three bed widths. Rice crop was raised under furrow furrow-irrigated raised bed system (FIRB) system. Response of the crop to the different treatments indicated that growth parameters viz., plant height and Dry Matter Production (DMP) were highest in crop raised in bed width of 1.0 m accommodating five rows per bed and irrigating the crop daily. Raised bed of 1.0 m bed width accommodating five rows per bed and irrigating crop daily resulted in higher grain yield (3874 and 3789 kg ha-1 during 2015 and 2016, respectively) and Water use Efficiency (4.39 and 4.24 kg ha-1 mm-1 during 2015 and 2016, respectively) than other irrigation scheduling and land configurations","PeriodicalId":18154,"journal":{"name":"Madras Agricultural Journal","volume":"54 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"135212880","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}
An experiment was conducted during 2021-22 at Forest College and Research Institute, Mettupalayam to evaluate the food ingestion, digestion and efficiency of conversion of castor and tapioca cultivars for Eri silkworm, Samiaricini. The leaves of castor cultivars Viz., YTP 1, YRCH 1, YRCH 2 and Local variety and tapioca cultivars Viz., YTP 1 and YTP 2 were fed to Eri silkworm. The studies of nutritional indices on different castor and tapioca cultivars revealed that total food consumption was found to be highest on castor variety YTP 1 (1014.92 g) followed by castor hybrid YRCH 2 (1009.14 g) and least on tapioca YTP 1 (910.14 g). Maximum food digestion and Efficiency conversion of ingested food was found on castor variety YTP 1 (546.17 g and 21.70 %) when compared to 427.05 g and 21.99 per cent on tapioca YTP 1.
{"title":"Investigations of Different Host Plants on Nutritional Indices of Eri Silkworm (Samia ricini)","authors":"Vijay S, Susikaran S","doi":"10.29321/maj.10.200823","DOIUrl":"https://doi.org/10.29321/maj.10.200823","url":null,"abstract":"An experiment was conducted during 2021-22 at Forest College and Research Institute, Mettupalayam to evaluate the food ingestion, digestion and efficiency of conversion of castor and tapioca cultivars for Eri silkworm, Samiaricini. The leaves of castor cultivars Viz., YTP 1, YRCH 1, YRCH 2 and Local variety and tapioca cultivars Viz., YTP 1 and YTP 2 were fed to Eri silkworm. The studies of nutritional indices on different castor and tapioca cultivars revealed that total food consumption was found to be highest on castor variety YTP 1 (1014.92 g) followed by castor hybrid YRCH 2 (1009.14 g) and least on tapioca YTP 1 (910.14 g). Maximum food digestion and Efficiency conversion of ingested food was found on castor variety YTP 1 (546.17 g and 21.70 %) when compared to 427.05 g and 21.99 per cent on tapioca YTP 1.","PeriodicalId":18154,"journal":{"name":"Madras Agricultural Journal","volume":"2014 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"136138301","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}
Studies were carried out to find the influence of media and sowing conditions on the field emergence of Palmyrah seeds. The seeds were sown in a sunken nursery bed, raised nursery bed, and direct sowing to observe field emergence. The experiment was conducted in a Randomized Block Design with eight replications of 50 seeds sown in each treatment. The observations were recorded at monthly intervals up to 24 months after sowing. The results revealed that Palmyrah seeds sown in a raised bed containing red earth, sand and farmyard manure 2:1:1 ratio recorded the highest field emergence of 78.67 % followed by seeds sown in sand and field conditions. This study concluded that Palmyrah seeds sown in raised bed containing red earth, sand and farmyard manure 2:1:1 ratio used for sowing/multiplication purpose.
{"title":"Influence of Media and Sowing Condition on Field Emergence of Palmyrah (Borassus flabellifer L.)","authors":"M. P, I. C, V. S","doi":"10.29321/maj.10.200757","DOIUrl":"https://doi.org/10.29321/maj.10.200757","url":null,"abstract":"Studies were carried out to find the influence of media and sowing conditions on the field emergence of Palmyrah seeds. The seeds were sown in a sunken nursery bed, raised nursery bed, and direct sowing to observe field emergence. The experiment was conducted in a Randomized Block Design with eight replications of 50 seeds sown in each treatment. The observations were recorded at monthly intervals up to 24 months after sowing. The results revealed that Palmyrah seeds sown in a raised bed containing red earth, sand and farmyard manure 2:1:1 ratio recorded the highest field emergence of 78.67 % followed by seeds sown in sand and field conditions. This study concluded that Palmyrah seeds sown in raised bed containing red earth, sand and farmyard manure 2:1:1 ratio used for sowing/multiplication purpose.","PeriodicalId":18154,"journal":{"name":"Madras Agricultural Journal","volume":"40 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2023-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"76768768","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}
The study has been undertaken to investigate the physico-chemical, cooking and nutritional qualities of selected traditional rice varieties of Tamil Nadu. Significant variations (p<0.05) were observed among the twelve traditional rice varieties for all the characters except hulling percentage. Among the varieties, the highest hulling out-turn was found in Poonkar (90.0 %) and the lowest was found in Anaikomban (84.0 %). The milling out-turn was ranged from 74.0 % to 80.0 %. Head Rice Recovery (HRR) varied from 50.0 % to 75.0 %. The kernel length was highest in Kullakar (6.3 mm) and lowest (4.2 mm) in Milagu samba and Thulasi vasa samba. Kernel breadth was ranged between 1.4 – 2.5 mm. Based on length/breadth ratio, the variety Thanga samba obtained slender grain type whereas all other varieties obtained medium grain type. The Kernel length after cooking ranged from 6.5 mm (Thulasi vasa samba) to 9.8 mm (Poonkar). The volume expansion ratio ranged from 4.6 in Sorna masuri to 3.7 in Poonkar and Kullakar. Gel consistency ranged from 46.0 - 135.0 mm. The Gelatinization Temperature (GT) was determined based on alkali spreading value and the rice varieties Milagu samba, Kuzhiadichan and Thulasi vasa samba have obtained intermediate GT values whereas other varieties evaluated showed high to intermediate GT. Intermediate amylose content is considered to be the best from the cooking point of view. Varieties Anaikomban (20.1 %), Garudan samba (20.4 %), Poonkar (20.7 %) and Sorna masuri (23.2 %) were identified with intermediate amylose content. Highest protein (10.40 %), iron (15.8 mg kg-1) and zinc (20.5 mg kg-1) content were recorded in the varieties Poonkar, Thuaiya malli samba and Kullakar respectively, making them nutritionally superior among the tested varieties. There is a growing global demand for rice varieties with good quality characteristics. This study provides immense information on varieties with superior physico-chemical, cooking and nutritional characteristics which could be used to meet those demands.
进行这项研究是为了调查泰米尔纳德邦选定的传统水稻品种的理化、烹饪和营养品质。12个传统水稻品种间除脱壳率外，其余性状均存在显著差异(p<0.05)。脱壳率最高的品种为Poonkar(90.0%)，最低的品种为Anaikomban(84.0%)。铣削出料率为74.0% ~ 80.0%。稻穗回收率(HRR)为50.0% ~ 75.0%。籽粒长度以库拉卡最高(6.3 mm)，米拉格桑巴和图拉西桑巴最低(4.2 mm)。籽粒宽度在1.4 ~ 2.5 mm之间。根据长宽比，桑巴品种为细粒型，其他品种均为中粒型。煮熟后的仁长从6.5 mm (Thulasi vasa samba)到9.8 mm (Poonkar)不等。索尔纳马苏里的体积膨胀率为4.6，而蓬卡尔和库拉卡尔的体积膨胀率为3.7。凝胶浓度范围为46.0 - 135.0 mm。根据碱扩散值确定了糊化温度(GT)，其中米拉格桑巴、库芝阿迪干和图拉西瓦萨桑巴为中等温度，其他品种均为高至中等温度，从蒸煮角度考虑直链淀粉含量为中等。其中，Anaikomban(20.1%)、Garudan samba(20.4%)、Poonkar(20.7%)和Sorna masuri(23.2%)的直链淀粉含量居中。Poonkar、Thuaiya malli samba和Kullakar的蛋白质含量最高(10.40%)，铁含量最高(15.8 mg kg-1)，锌含量最高(20.5 mg kg-1)，在试验品种中具有较好的营养价值。全球对品质优良的水稻品种的需求日益增长。这项研究提供了大量的信息，品种具有优越的物理化学，烹饪和营养特性，可以用来满足这些需求。
{"title":"Study of Physicochemical, Cooking and Nutritional Properties of Selected Traditional Rice Varieties of Tamil Nadu","authors":"Suganthy M, M. S, G. R, Sunitha R","doi":"10.29321/maj.10.200718","DOIUrl":"https://doi.org/10.29321/maj.10.200718","url":null,"abstract":"The study has been undertaken to investigate the physico-chemical, cooking and nutritional qualities of selected traditional rice varieties of Tamil Nadu. Significant variations (p<0.05) were observed among the twelve traditional rice varieties for all the characters except hulling percentage. Among the varieties, the highest hulling out-turn was found in Poonkar (90.0 %) and the lowest was found in Anaikomban (84.0 %). The milling out-turn was ranged from 74.0 % to 80.0 %. Head Rice Recovery (HRR) varied from 50.0 % to 75.0 %. The kernel length was highest in Kullakar (6.3 mm) and lowest (4.2 mm) in Milagu samba and Thulasi vasa samba. Kernel breadth was ranged between 1.4 – 2.5 mm. Based on length/breadth ratio, the variety Thanga samba obtained slender grain type whereas all other varieties obtained medium grain type. The Kernel length after cooking ranged from 6.5 mm (Thulasi vasa samba) to 9.8 mm (Poonkar). The volume expansion ratio ranged from 4.6 in Sorna masuri to 3.7 in Poonkar and Kullakar. Gel consistency ranged from 46.0 - 135.0 mm. The Gelatinization Temperature (GT) was determined based on alkali spreading value and the rice varieties Milagu samba, Kuzhiadichan and Thulasi vasa samba have obtained intermediate GT values whereas other varieties evaluated showed high to intermediate GT. Intermediate amylose content is considered to be the best from the cooking point of view. Varieties Anaikomban (20.1 %), Garudan samba (20.4 %), Poonkar (20.7 %) and Sorna masuri (23.2 %) were identified with intermediate amylose content. Highest protein (10.40 %), iron (15.8 mg kg-1) and zinc (20.5 mg kg-1) content were recorded in the varieties Poonkar, Thuaiya malli samba and Kullakar respectively, making them nutritionally superior among the tested varieties. There is a growing global demand for rice varieties with good quality characteristics. This study provides immense information on varieties with superior physico-chemical, cooking and nutritional characteristics which could be used to meet those demands.","PeriodicalId":18154,"journal":{"name":"Madras Agricultural Journal","volume":"21 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2023-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"75043069","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}
The present investigation was carried out at Thirumaraiyur village, Sattankulamtaluk, Thoothukudi district, to study the effect of organic amendments with the recommended dose of fertilizers on the growth and yield of watermelon in Ther isoil (red sand dunes) during the year 2017 and 2018. The experiment was laid out in Randomized Block Design with Factorial concept (FRBD). There were three factors as organic amendments with 6 treatment combinations for each factor, which were assigned at random in each plot with three replications. The recommended dose of fertilizers in treatments was two levels 75 and 100 percent. Among the treatment combinations, the tank silt application @ 100 t ha-1 with 100 per cent recommended fertilizer as 200:100:100 kg of NPK ha-1 through Fertigation at 7 days interval (A1N5) produced the maximum number of branches (10.67), longest vine (362.0 cm), number of fruits plant-1 (2.57), the weight of fruit (5.27 kg), fruit yield (68.77 t ha-1), total soluble solid (TSS) 10.94%), ascorbic acid (8.08 (mg 100g-1), gross return ( 4,09,320/ha), B:C ratio (2.45), uptake of NPK 41.51, 3.93 and 31.94 kg ha-1, respectively) compared to other treatments. Significant built-up of organic carbon (0.52%), available N (253.47 kg ha-1 ), P (16.40 kg ha-1) and K (218.40 kg ha-1) were registered with the application of tank silt application @ 100 t ha-1 with 100 per cent recommended fertilizer as 200:100:100 kg of NPK ha-1 through Fertigation at 7 days interval (A1N5).
本研究在Thoothukudi区Sattankulamtaluk的Thirumaraiyur村进行，旨在研究2017年和2018年有机改剂与推荐肥料剂量对Ther isoil(红沙丘)西瓜生长和产量的影响。试验采用因子概念随机区组设计(FRBD)。3个因子为有机修正因子，每个因子6个处理组合，随机分配于每个小区，3个重复。肥料的推荐用量分为两个水平:75%和100%。在各处理组合中，槽泥施100 t hm -1, 100%推荐施肥200:100:100 kg NPK hm -1，间隔7天施肥(A1N5)产生的枝数最多(10.67)，藤长(362.0 cm)，果实数为2.57，果实重(5.27 kg)，果实产量(68.77 t hm -1)，总可溶性固形物(TSS) 10.94%，抗坏血酸(8.08 (mg 100 -1))，总收益(4,09,320/ha)， B:C比(2.45)，氮磷钾吸收量41.51。分别为3.93和31.94 kg hm -1)。在每隔7天(A1N5)施肥100 t hm -1, 100%推荐施肥200:100:100 kg NPK hm -1的情况下，显著的有机碳积累(0.52%)、速效氮(253.47 kg hm -1)、磷(16.40 kg hm -1)和钾(218.40 kg hm -1)。
{"title":"Influence of Organic Amendments and Fertigation on Growth, Yield, Quality of Watermelon (CitrulluslanatusThunb.) and Available Nutrient Status in Their Land (Red Sand Dune) of Southern Tamil Nadu","authors":"P. M, J. S","doi":"10.29321/maj.10.000721","DOIUrl":"https://doi.org/10.29321/maj.10.000721","url":null,"abstract":"The present investigation was carried out at Thirumaraiyur village, Sattankulamtaluk, Thoothukudi district, to study the effect of organic amendments with the recommended dose of fertilizers on the growth and yield of watermelon in Ther isoil (red sand dunes) during the year 2017 and 2018. The experiment was laid out in Randomized Block Design with Factorial concept (FRBD). There were three factors as organic amendments with 6 treatment combinations for each factor, which were assigned at random in each plot with three replications. The recommended dose of fertilizers in treatments was two levels 75 and 100 percent. Among the treatment combinations, the tank silt application @ 100 t ha-1 with 100 per cent recommended fertilizer as 200:100:100 kg of NPK ha-1 through Fertigation at 7 days interval (A1N5) produced the maximum number of branches (10.67), longest vine (362.0 cm), number of fruits plant-1 (2.57), the weight of fruit (5.27 kg), fruit yield (68.77 t ha-1), total soluble solid (TSS) 10.94%), ascorbic acid (8.08 (mg 100g-1), gross return ( 4,09,320/ha), B:C ratio (2.45), uptake of NPK 41.51, 3.93 and 31.94 kg ha-1, respectively) compared to other treatments. Significant built-up of organic carbon (0.52%), available N (253.47 kg ha-1 ), P (16.40 kg ha-1) and K (218.40 kg ha-1) were registered with the application of tank silt application @ 100 t ha-1 with 100 per cent recommended fertilizer as 200:100:100 kg of NPK ha-1 through Fertigation at 7 days interval (A1N5).","PeriodicalId":18154,"journal":{"name":"Madras Agricultural Journal","volume":"33 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2023-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"84570767","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}
Kalaiarasi D, Rohini A, Venkatesa Palanichamy N, Shivakumar KM, Pangayar Selvi R, Chandra Sekhar K
The outbreak of corona virus has affected the financial market internationally in an unprecedented way. Due to the devastations that emerged in the international market, the Indian financial market proportionally reacted to the pandemic and further witnessed violent volatility. Considering the COVID-19 situation, this paper is an empirical investigation on the impact of COVID-19 on agricultural commodities, specifically on NCDEX platform. Using daily closing future prices of guar seed, jeera, turmeric, and Coriander on NCDEX, this study examines the impact of COVID-19 on the selected commodities over the period from 24th December 2019 to 24th June 2020, representing three months before and during the covid – 19 spread. This study has tried to compare the future prices in the pre-COVID-19 period and during the COVID-19 situation, by using GARCH Model. Findings reveal that the price of jeera, turmeric and coriander has encountered instability during the Corona pandemic period.
{"title":"Price Patterns in Agricultural Futures Markets: A GARCH Model Approach","authors":"Kalaiarasi D, Rohini A, Venkatesa Palanichamy N, Shivakumar KM, Pangayar Selvi R, Chandra Sekhar K","doi":"10.29321/maj.10.000839","DOIUrl":"https://doi.org/10.29321/maj.10.000839","url":null,"abstract":"The outbreak of corona virus has affected the financial market internationally in an unprecedented way. Due to the devastations that emerged in the international market, the Indian financial market proportionally reacted to the pandemic and further witnessed violent volatility. Considering the COVID-19 situation, this paper is an empirical investigation on the impact of COVID-19 on agricultural commodities, specifically on NCDEX platform. Using daily closing future prices of guar seed, jeera, turmeric, and Coriander on NCDEX, this study examines the impact of COVID-19 on the selected commodities over the period from 24th December 2019 to 24th June 2020, representing three months before and during the covid – 19 spread. This study has tried to compare the future prices in the pre-COVID-19 period and during the COVID-19 situation, by using GARCH Model. Findings reveal that the price of jeera, turmeric and coriander has encountered instability during the Corona pandemic period.","PeriodicalId":18154,"journal":{"name":"Madras Agricultural Journal","volume":"6 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"135211300","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}
Vinothkumar Bhojan, Karthik p, Muralitharan v, Thangachamy P
Two field experiments were conducted to assess the efficacy of fipronil 80 WG against stem borer and leaf folder in the paddy ecosystem at Tamil Nadu Agricultural University, Coimbatore. The results revealed that, the per cent reduction of leaf folder damage was recorded maximum in the plots treated with fipronil 80 WG at 100, 80 and 50 g a.i. ha-1 (77.96, 77.31 & 76.83 %, respectively over untreated control) and on par with standard check fipronil 5 SC @ 50 g a.i. ha-1 (76.37 %). Chlorpyriphos 20 EC @ 200 g a.i. ha-1 recorded 63.69 per cent reduction of leaf folder damage over untreated control. The stem borer damage was recorded minimum in fipronil 80 WG @ 100, 80 and 50 g a.i.ha-1 (3.43, 3.50 and 3.63 %, respectively over untreated check) followed by fipronil 5 SC @ 50 g a.i.ha-1 (3.76 %) and 40 g a.i.ha-1 (3.91 %) after two rounds of spraying. Whereas in untreated control stem borer damage recorded as 17.69 per cent. The grain yield was maximum in the plots treated with fipronil 80 WG @ 100 g a.i.ha-1 (4040 kg ha-1) which was on par with fipronil 80 WG @ 80 g a.i.ha-1 (4028 kg ha-1) and @ 50 g a.i.ha-1 (4017 kg ha-1). Fipronil 80 WG @ 50 g a.i. ha-1 recorded the highest percent reduction of leaf folder and stem borer damage in paddy with significantly increased yield and registered on par with treatments of its higher dose. Hence, fipronil 80 WG @ 50 g a.i. ha-1 is recommended for the management of leaf folder and stem borer in paddy ecosystem
在泰米尔纳德邦农业大学进行了两项田间试验，以评估氟虫腈80 WG对水稻生态系统中茎螟虫和叶折虫的防治效果。结果表明，氟虫腈80 WG在100、80和50 g a.i. ha-1剂量下，对叶折害的减少率最高(77.96、77.31;与未经处理的对照相比，分别为76.83%)，与标准对照氟虫腈5 SC @ 50 g a.i. ha-1相当(76.37%)。毒死蜱20 EC @ 200 g a.i. ha-1比未处理的对照减少了63.69%的叶折损害。氟虫腈80 WG @ 100、80和50 g a.i.ha-1对茎螟虫的危害最小(分别为未处理的3.43%、3.50%和3.63%)，其次是氟虫腈5 SC @ 50 g a.i.ha-1(3.76%)和40 g a.i.ha-1(3.91%)。而在未处理的对照中，茎螟虫的危害率为17.69%。在氟虫腈80 WG @ 100 g a.i.ha-1 (4040 kg ha-1)处理的小区中，粮食产量最高，与氟虫腈80 WG @ 80 g a.i.ha-1 (4028 kg ha-1)和50 g a.i.ha-1 (4017 kg ha-1)相当。氟虫腈80 WG @ 50 g a.i. ha-1对水稻叶折虫和茎螟虫危害的减少率最高，产量显著提高，与更高剂量的处理相当。因此，推荐使用氟虫腈80 WG @ 50 g a.i. ha-1防治水稻生态系统中的叶折虫和茎螟虫
{"title":"Assessment of Biopotency of Fipronil 80 WG against Stem Borer and Leaf Folder in Paddy Ecosystem","authors":"Vinothkumar Bhojan, Karthik p, Muralitharan v, Thangachamy P","doi":"10.29321/maj.10.200016","DOIUrl":"https://doi.org/10.29321/maj.10.200016","url":null,"abstract":"Two field experiments were conducted to assess the efficacy of fipronil 80 WG against stem borer and leaf folder in the paddy ecosystem at Tamil Nadu Agricultural University, Coimbatore. The results revealed that, the per cent reduction of leaf folder damage was recorded maximum in the plots treated with fipronil 80 WG at 100, 80 and 50 g a.i. ha-1 (77.96, 77.31 & 76.83 %, respectively over untreated control) and on par with standard check fipronil 5 SC @ 50 g a.i. ha-1 (76.37 %). Chlorpyriphos 20 EC @ 200 g a.i. ha-1 recorded 63.69 per cent reduction of leaf folder damage over untreated control. The stem borer damage was recorded minimum in fipronil 80 WG @ 100, 80 and 50 g a.i.ha-1 (3.43, 3.50 and 3.63 %, respectively over untreated check) followed by fipronil 5 SC @ 50 g a.i.ha-1 (3.76 %) and 40 g a.i.ha-1 (3.91 %) after two rounds of spraying. Whereas in untreated control stem borer damage recorded as 17.69 per cent. The grain yield was maximum in the plots treated with fipronil 80 WG @ 100 g a.i.ha-1 (4040 kg ha-1) which was on par with fipronil 80 WG @ 80 g a.i.ha-1 (4028 kg ha-1) and @ 50 g a.i.ha-1 (4017 kg ha-1). Fipronil 80 WG @ 50 g a.i. ha-1 recorded the highest percent reduction of leaf folder and stem borer damage in paddy with significantly increased yield and registered on par with treatments of its higher dose. Hence, fipronil 80 WG @ 50 g a.i. ha-1 is recommended for the management of leaf folder and stem borer in paddy ecosystem","PeriodicalId":18154,"journal":{"name":"Madras Agricultural Journal","volume":"11 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"134883814","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}
A field experiment was conducted at Eastern Block Farm, Department of Agronomy, TNAU, Coimbatore, during the summer of 2019 with the objective of finding outthe nutrient uptakeandthe postharvest soil nutrient statusof Extra Long Staple (ELS) cotton under methods of crop establishment, intercropping and nutrient management. The experiment was laid out in a randomized block design with three replications. The treatments consisted,viz.T1: Transplanting + Green gram + 75% RDF, T2 : Transplanting + Black gram + 75% RDF, T3 : Transplanting + Onion + 75% RDF, T4 : Transplanting + Green gram + 100% RDF, T5 : Transplanting + Intercrop with Black gram + 100% RDF, T6 : Transplanting + Onion + 100% RDF, T7 : Transplanting + Green gram + 125% RDF, T8 : Transplanting + Black gram + 125% RDF, T9 : Transplanting + Onion + 125% RDF, T10 : Transplanting + 100% RDF, T11 : Direct seeding + Recommended package of practices. Nutrient uptake was higher in transplanted cotton intercropped with black gram followed by thegreen gram with the application of 125% RDF followed by 100% RDF which was significantly influenced by crop establishment techniques, intercropping and different doses of fertilizer level.Available soil nutrients were higher in direct-seeded cotton compared to transplanted cotton
{"title":"Nutrient Uptake and Post-Harvest Soil Nutrient Status of Extra Long StapleCottonas Influenced by Establishment Methods, Intercropping and Nutrient Management","authors":"Monicaa M, V. K, S. N, K. A","doi":"10.29321/maj.10.200730","DOIUrl":"https://doi.org/10.29321/maj.10.200730","url":null,"abstract":"A field experiment was conducted at Eastern Block Farm, Department of Agronomy, TNAU, Coimbatore, during the summer of 2019 with the objective of finding outthe nutrient uptakeandthe postharvest soil nutrient statusof Extra Long Staple (ELS) cotton under methods of crop establishment, intercropping and nutrient management. The experiment was laid out in a randomized block design with three replications. The treatments consisted,viz.T1: Transplanting + Green gram + 75% RDF, T2 : Transplanting + Black gram + 75% RDF, T3 : Transplanting + Onion + 75% RDF, T4 : Transplanting + Green gram + 100% RDF, T5 : Transplanting + Intercrop with Black gram + 100% RDF, T6 : Transplanting + Onion + 100% RDF, T7 : Transplanting + Green gram + 125% RDF, T8 : Transplanting + Black gram + 125% RDF, T9 : Transplanting + Onion + 125% RDF, T10 : Transplanting + 100% RDF, T11 : Direct seeding + Recommended package of practices. Nutrient uptake was higher in transplanted cotton intercropped with black gram followed by thegreen gram with the application of 125% RDF followed by 100% RDF which was significantly influenced by crop establishment techniques, intercropping and different doses of fertilizer level.Available soil nutrients were higher in direct-seeded cotton compared to transplanted cotton","PeriodicalId":18154,"journal":{"name":"Madras Agricultural Journal","volume":"30 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2023-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"81595531","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}
S. N, M. N, K. S V, Jeyarani S, S. A, B. V, Shanmugam P S, S. T, Arulkumar G, V. Bojan
Laboratory and pot culture experiments were conducted to assess the acute and persistent toxicity of new molecular insecticides against the notorious invasive pest of maize, Spodoptera frugiperda during 2020- 2021 at Department of Agricultural Entomology, Tamil Nadu Agricultural University, Coimbatore. Results revealed that, the LC50 value of emamectin benzoate, chlorantraniliprole, spinetoram, flubendiamide and novaluron were 0.05, 4.08, 0.1, 85.89 and 0.91 ppm, respectively for second instar larvae and 0.03, 5.63, 0.02, 162.99 and 0.99 ppm for third instar larvae of fall armyworm. Among insecticides tested emamectin benzoate and spinetoram showed high toxicity to S. frugiperda than other insecticides by registering a minimum LC50 value. But in the persistent toxicity studies, the same insecticides showed less persistence on maize crop. Hence, insecticides like flubendiamide and chlorantraniliprole need to be recommended in the early stage of the crop period (within 20 days after sowing) and less persistent insecticides viz., emamectin benzoate and spinetoram should be recommended in the middle stage (25 to 40 days) of the maize crop for the management of S. frugiperda so that the residues may not accumulate in the harvested produce both in the stalk and grain.
{"title":"Acute and Persistent Toxicity of Newer Insecticide Molecules Against Invasive Pest of Maize, Fall Armyworm Spodoptera frugiperda (J.E.Smith)","authors":"S. N, M. N, K. S V, Jeyarani S, S. A, B. V, Shanmugam P S, S. T, Arulkumar G, V. Bojan","doi":"10.29321/maj.10.000752","DOIUrl":"https://doi.org/10.29321/maj.10.000752","url":null,"abstract":"Laboratory and pot culture experiments were conducted to assess the acute and persistent toxicity of new molecular insecticides against the notorious invasive pest of maize, Spodoptera frugiperda during 2020- 2021 at Department of Agricultural Entomology, Tamil Nadu Agricultural University, Coimbatore. Results revealed that, the LC50 value of emamectin benzoate, chlorantraniliprole, spinetoram, flubendiamide and novaluron were 0.05, 4.08, 0.1, 85.89 and 0.91 ppm, respectively for second instar larvae and 0.03, 5.63, 0.02, 162.99 and 0.99 ppm for third instar larvae of fall armyworm. Among insecticides tested emamectin benzoate and spinetoram showed high toxicity to S. frugiperda than other insecticides by registering a minimum LC50 value. But in the persistent toxicity studies, the same insecticides showed less persistence on maize crop. Hence, insecticides like flubendiamide and chlorantraniliprole need to be recommended in the early stage of the crop period (within 20 days after sowing) and less persistent insecticides viz., emamectin benzoate and spinetoram should be recommended in the middle stage (25 to 40 days) of the maize crop for the management of S. frugiperda so that the residues may not accumulate in the harvested produce both in the stalk and grain.","PeriodicalId":18154,"journal":{"name":"Madras Agricultural Journal","volume":"33 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2023-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"80873646","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}
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