Pub Date : 1900-01-01DOI: 10.18801/ajcsp.010119.03
M. H. Bhuiyan, M. Islam, T. Roy, S. Podder, S. Hossain
Mungbean is very promising pulse crop in Bangladesh but imbalance use of fertilizer and inappropriate weed management are the key reason for substantially lower yield of mungbean. Therefore, the experiment was conducted at the research plot of Sher-e-Bangla Agricultural University farm, Dhaka during the period from February, 2017 to June, 2017 to study the effect of potassium levels and weed control methods on the growth and yield of mungbean. The treatment consisted of three potassium level viz. K 0 = Control (No Potassium), K 1 = Recommended dose of Potassium (R), K 2 = 30% increased of R and four weed control methods viz., W 0 = No weeding (control), W 1 = One hand weeding at 15 days after sowing (DAS), W 2 = Two hand weeding at 15 DAS and 30 DAS, W 3 = One paraxon spray at 15 DAS. The experiment was laid out in a two factors randomized complete block design (RCBD) with three replications. The seeds of BARI mung-6 variety were the test materials. The highest plant height (45.30 cm), number of branch (10.54 cm), number of leaflets (17.00) and dry weight plant - 1 (7.30) was observed K 2 ×W 2 treatment. The highest plant height (27.90), pod length (9.48 cm), seeds pod -1 (10.22), weight of 1000 seeds (41.75 g), seed yield (1.63 t ha -1 ), strove yield (2.76 t ha -1 ), biological yield (4.37 t ha -1 ) and harvest Index (37.13%) was observed in the 30% increased of recommended dose of Potassium with two hand weeding (K 2 × W 2 ). The lowest plant height (21.08) was observed control (No Potassium and no weeding) (K 0 × W 0 ). The results indicated that the plants performed better in respect of seed yield and others yield contributing characters in K 2 ×W 2 (30% increased of recommended dose of Potassium with two hand weeding) treatment than the control treatment K 0 ×W 0 showed the least performance. Treatment K 2 ×W 2 (30% increased of recommended dose of Potassium with two hand weeding) was found to the most suitable combination for the highest yield of mungbean. days after sowing (DAS), W 2 = Two hand weeding at 15 DAS and 30 DAS, W 3 = One paraxon spray at 15 DAS. The experiment was laid out in a two factors Split Plot design (RCBD) with three replications. Potassium was used as main plot. There were 12 treatment combinations and 36 unit plots. The unit plot size was 5.52 m 2 (2.4 m X 2.3 m). The fertilizers were applied as basal dose @ N, P and K as 20, 17 and 20 kg ha -1 at final land preparation respectively in all plots and Seeds were sown at the rate of 40 kg ha -1 .
绿豆是孟加拉国很有前途的豆类作物，但施肥不平衡和杂草管理不当是造成绿豆产量大幅下降的主要原因。因此，本试验于2017年2月至6月在达卡Sher-e-Bangla农业大学农场的研究地块进行，研究钾水平和杂草控制方法对绿豆生长和产量的影响。处理包括3种钾水平，即k0 =对照(无钾)，k1 =钾推荐剂量(R)， k2 = R增加30%，以及4种杂草控制方法，即w0 =不除草(对照)，w1 =播后15天单手除草(DAS)， w2 =播种后15天和30天双手除草，w3 = 15天单手除草。试验采用两因素随机完全区组设计(RCBD)， 3个重复。以BARI绿6品种种子为试验材料。k2 ×W 2处理植株最高株高(45.30 cm)、分枝数(10.54 cm)、小叶数(17.00)和干重(7.30)。双手除钾推荐用量(k2 × w2)增加30%，最高株高(27.90)、荚果长(9.48 cm)、籽粒荚果-1(10.22)、千粒重(41.75 g)、籽粒产量(1.63 t ha -1)、硬果产量(2.76 t ha -1)、生物产量(4.37 t ha -1)和收获指数(37.13%)。对照(不施钾不除草)株高最低(21.08)(K 0 × W 0)。结果表明，在种子产量和其他产量贡献性状方面，k0 ×W 2(双手除草钾推荐用量增加30%)处理比对照处理k0 ×W 0表现最差。结果表明，k2 ×W 2处理(双手除草钾推荐用量增加30%)是绿豆产量最高的最适宜组合。播种后天数(DAS)， w2 =在15das和30das进行两次手除草，w3 =在15das进行一次对喷。试验采用双因素分割区设计(RCBD)， 3个重复。以钾为主要基质。共有12个处理组合和36个单元样地。单位地块面积为5.52 m2 (2.4 m X 2.3 m)。所有地块在最后整地时分别施用N、P和K的基础剂量20、17和20 kg ha -1，种子播种率为40 kg ha -1。
{"title":"Potassium and Weed Control Methods affected on Yield of Mungbean","authors":"M. H. Bhuiyan, M. Islam, T. Roy, S. Podder, S. Hossain","doi":"10.18801/ajcsp.010119.03","DOIUrl":"https://doi.org/10.18801/ajcsp.010119.03","url":null,"abstract":"Mungbean is very promising pulse crop in Bangladesh but imbalance use of fertilizer and inappropriate weed management are the key reason for substantially lower yield of mungbean. Therefore, the experiment was conducted at the research plot of Sher-e-Bangla Agricultural University farm, Dhaka during the period from February, 2017 to June, 2017 to study the effect of potassium levels and weed control methods on the growth and yield of mungbean. The treatment consisted of three potassium level viz. K 0 = Control (No Potassium), K 1 = Recommended dose of Potassium (R), K 2 = 30% increased of R and four weed control methods viz., W 0 = No weeding (control), W 1 = One hand weeding at 15 days after sowing (DAS), W 2 = Two hand weeding at 15 DAS and 30 DAS, W 3 = One paraxon spray at 15 DAS. The experiment was laid out in a two factors randomized complete block design (RCBD) with three replications. The seeds of BARI mung-6 variety were the test materials. The highest plant height (45.30 cm), number of branch (10.54 cm), number of leaflets (17.00) and dry weight plant - 1 (7.30) was observed K 2 ×W 2 treatment. The highest plant height (27.90), pod length (9.48 cm), seeds pod -1 (10.22), weight of 1000 seeds (41.75 g), seed yield (1.63 t ha -1 ), strove yield (2.76 t ha -1 ), biological yield (4.37 t ha -1 ) and harvest Index (37.13%) was observed in the 30% increased of recommended dose of Potassium with two hand weeding (K 2 × W 2 ). The lowest plant height (21.08) was observed control (No Potassium and no weeding) (K 0 × W 0 ). The results indicated that the plants performed better in respect of seed yield and others yield contributing characters in K 2 ×W 2 (30% increased of recommended dose of Potassium with two hand weeding) treatment than the control treatment K 0 ×W 0 showed the least performance. Treatment K 2 ×W 2 (30% increased of recommended dose of Potassium with two hand weeding) was found to the most suitable combination for the highest yield of mungbean. days after sowing (DAS), W 2 = Two hand weeding at 15 DAS and 30 DAS, W 3 = One paraxon spray at 15 DAS. The experiment was laid out in a two factors Split Plot design (RCBD) with three replications. Potassium was used as main plot. There were 12 treatment combinations and 36 unit plots. The unit plot size was 5.52 m 2 (2.4 m X 2.3 m). The fertilizers were applied as basal dose @ N, P and K as 20, 17 and 20 kg ha -1 at final land preparation respectively in all plots and Seeds were sown at the rate of 40 kg ha -1 .","PeriodicalId":186401,"journal":{"name":"Asian Journal of Crop, Soil Science and Plant Nutrition","volume":"9 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1900-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"126098823","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 1900-01-01DOI: 10.18801/ajcsp.010219.04
M. Islam, Sakina M Khanam, Md. Shamiul Haque, Md. Tanjilur Rahman Mondal, Md. Al-Arafat Topu
Salinity intrusion causes problems in the coastal areas of Bangladesh. Climate change creates hazards like cyclone, sea level rise, and storm surge have been increasing the salinity problem in many folds. The coastal region covers about 20% of the country, from where cultivable land more than 30%. Agricultural land uses in these areas are very poor, because of high content of salinity in Rabi season. Already, 830,000 million hectares of land already identified as affected by soil salinity. A field experiment was carried out at saline prone area, Suparishata, Sodor, Satkhira under natural salinity condition during Rabi season 2017-2018. The experiment was carried out with two varieties namely, V1=Binadhan-10, V2=BRRIdhan67 and four levels of gypsum with control G0: 0 kg ha-1, G1: 75 kg ha-1, G2: 150 kg ha-1 and G3: 225 kg ha-1. The experiment was laid out in a split plot design with three replications. The unit plot size was 3m x 4m. The recommended fertilizer doses applied for the experiment were 80 kg N ha-1, 15 kg P ha-1, 50 kg K ha-1. Nitrogen, phosphorus, potassium, sulphur and zinc were supplied from urea, TSP, MoP, gypsum and zinc sulphate monohydrate respectively while urea was applied in three equal splits. Application of silicon had significant effect on plant height, number of effective tiller m-2, length of panicle, total number of spikelets panicle-1, thousand grain weight, number of filled spikelets panicle-1, grain yield straw yield. It seems that the crop responded to the application of gypsum from 75-225 kg ha-1. Overall results suggest that an application of gypsum 225 kg ha-1 along with N, P, K, Zn and Boron might be necessary to ensure satisfactory yield of rice in saline prone area under natural salinity condition.
盐分入侵给孟加拉国沿海地区带来了问题。气候变化造成了飓风、海平面上升和风暴潮等危害，在许多方面加剧了盐度问题。沿海地区约占全国面积的20%，其中可耕地占30%以上。由于拉比季节盐分含量高，这些地区的农业用地非常贫瘠。已经有83亿公顷的土地被确定为受到土壤盐碱化的影响。2017-2018年Rabi季，在自然盐度条件下，在盐碱易发区Suparishata、Sodor、Satkhira进行了田间试验。选用V1=Binadhan-10、V2=BRRIdhan67两个品种和4个水平的石膏进行试验，对照G0: 0 kg ha-1、G1: 75 kg ha-1、G2: 150 kg ha-1、G3: 225 kg ha-1。试验采用三次重复的分割图设计。单位地块面积为3米× 4米。试验推荐施氮量为80 kg hm -1，磷肥15 kg hm -1，钾肥50 kg hm -1。氮、磷、钾、硫、锌分别由尿素、TSP、MoP、石膏和一水硫酸锌供给，尿素等分三次供给。施硅对水稻株高、有效分蘖m-2数、穗长、穗-1总粒数、千粒重、穗-1实粒数、籽粒产量、秸秆产量均有显著影响。从75-225 kg hm -1施用石膏看来，作物对石膏有反应。综上所述，在自然盐碱条件下，石膏225 kg hm -1配施N、P、K、Zn、硼，可保证水稻高产。
{"title":"Improvement of yield of salt tolerant rice genotypes/varieties through gypsum application","authors":"M. Islam, Sakina M Khanam, Md. Shamiul Haque, Md. Tanjilur Rahman Mondal, Md. Al-Arafat Topu","doi":"10.18801/ajcsp.010219.04","DOIUrl":"https://doi.org/10.18801/ajcsp.010219.04","url":null,"abstract":"Salinity intrusion causes problems in the coastal areas of Bangladesh. Climate change creates hazards like cyclone, sea level rise, and storm surge have been increasing the salinity problem in many folds. The coastal region covers about 20% of the country, from where cultivable land more than 30%. Agricultural land uses in these areas are very poor, because of high content of salinity in Rabi season. Already, 830,000 million hectares of land already identified as affected by soil salinity. A field experiment was carried out at saline prone area, Suparishata, Sodor, Satkhira under natural salinity condition during Rabi season 2017-2018. The experiment was carried out with two varieties namely, V1=Binadhan-10, V2=BRRIdhan67 and four levels of gypsum with control G0: 0 kg ha-1, G1: 75 kg ha-1, G2: 150 kg ha-1 and G3: 225 kg ha-1. The experiment was laid out in a split plot design with three replications. The unit plot size was 3m x 4m. The recommended fertilizer doses applied for the experiment were 80 kg N ha-1, 15 kg P ha-1, 50 kg K ha-1. Nitrogen, phosphorus, potassium, sulphur and zinc were supplied from urea, TSP, MoP, gypsum and zinc sulphate monohydrate respectively while urea was applied in three equal splits. Application of silicon had significant effect on plant height, number of effective tiller m-2, length of panicle, total number of spikelets panicle-1, thousand grain weight, number of filled spikelets panicle-1, grain yield straw yield. It seems that the crop responded to the application of gypsum from 75-225 kg ha-1. Overall results suggest that an application of gypsum 225 kg ha-1 along with N, P, K, Zn and Boron might be necessary to ensure satisfactory yield of rice in saline prone area under natural salinity condition.","PeriodicalId":186401,"journal":{"name":"Asian Journal of Crop, Soil Science and Plant Nutrition","volume":"208 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1900-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"121085825","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 1900-01-01DOI: 10.18801/ajcsp.040120.17
An experiment was conducted at the Horticulture Farm of Bangladesh Agricultural University, Mymensingh to assess the effects of seedling age and potassium fertilizer to improve summer onion production (cv. BARI Piaj-3). The experiment consisted of two factors; Factor A: three seedling age, viz. 35; 40 and 45 days old and Factor B: four different doses of potassium, viz. 0; 40; 80 and 120 kg/ha-1. The experiment was laid out in a randomized complete block design with three replications. The effect of different seedling age and potassium fertilizer and their combined effects showed significant variations in growth and yield of onion. In case of seedling age, the highest plant height (56.58 cm), leaf number (12.37) per plant, leaf length (41.77 cm), yield of bulb per plot (1.96 kg) and yield of bulb (19.64 t/ha) were recorded from 45 day old seedling. In case of different doses of potassium, the highest plant height (58.82 cm), leaf number per plant (13.93), leaf length (43.69 cm), yield of bulb per plot (1.90 kg) and yield of bulb (19.00 t/ha) were recorded from 120 kg K ha-1. Combined effects of seedling age and potassium fertilizer exhibited significant variation on plant height at different days after transplant (DAT), leaf number per plant, leaf length, bulb diameter, pseudostem diameter, fresh weight of bulb, dry weight of bulbs, fresh weight of foliage, dry weight of foliage, yield of bulbs per plot and yield of bulbs (t/ha). The highest bulb yields per plot (2.31 kg) as well as per hectare (23.05 tons) were achieved from the treatment combination of 45 day old seedling and 120 kg K ha-1.
在孟加拉国农业大学Mymensingh园艺农场进行了一项试验，以评估苗龄和钾肥对提高夏葱产量的影响。巴里Piaj-3)。实验包括两个因素;因素A:三苗龄，即35岁;40天和45天的婴儿和维生素B:四种不同剂量的钾，即0;40;80和120 kg/ha-1。试验采用完全随机区组设计，设3个重复。不同苗龄和钾肥及其联合施用对洋葱的生长和产量有显著影响。苗龄方面，45 d苗期最高株高(56.58 cm)、单株叶数(12.37)、叶长(41.77 cm)、鳞茎亩产(1.96 kg)和鳞茎亩产(19.64 t/ha)。不同钾用量下，从120 kg K hm -1起，最高株高(58.82 cm)、单株叶数(13.93)、叶长(43.69 cm)、每块鳞茎产量(1.90 kg)和鳞茎产量(19.00 t/ha)。苗龄和钾肥的综合效应对移栽后不同天数的株高、单株叶数、叶长、鳞茎直径、假茎直径、鳞茎鲜重、鳞茎干重、叶片鲜重、叶片干重、鳞茎亩产量和鳞茎产量(t/ hm2)均有显著影响。45日龄苗木和120 kg K ha-1的处理组合亩产最高(2.31 kg)，亩产最高(23.05吨)。
{"title":"Effects of seedling age and potassium fertilizer on growth and yield of summer onion","authors":"","doi":"10.18801/ajcsp.040120.17","DOIUrl":"https://doi.org/10.18801/ajcsp.040120.17","url":null,"abstract":"An experiment was conducted at the Horticulture Farm of Bangladesh Agricultural University, Mymensingh to assess the effects of seedling age and potassium fertilizer to improve summer onion production (cv. BARI Piaj-3). The experiment consisted of two factors; Factor A: three seedling age, viz. 35; 40 and 45 days old and Factor B: four different doses of potassium, viz. 0; 40; 80 and 120 kg/ha-1. The experiment was laid out in a randomized complete block design with three replications. The effect of different seedling age and potassium fertilizer and their combined effects showed significant variations in growth and yield of onion. In case of seedling age, the highest plant height (56.58 cm), leaf number (12.37) per plant, leaf length (41.77 cm), yield of bulb per plot (1.96 kg) and yield of bulb (19.64 t/ha) were recorded from 45 day old seedling. In case of different doses of potassium, the highest plant height (58.82 cm), leaf number per plant (13.93), leaf length (43.69 cm), yield of bulb per plot (1.90 kg) and yield of bulb (19.00 t/ha) were recorded from 120 kg K ha-1. Combined effects of seedling age and potassium fertilizer exhibited significant variation on plant height at different days after transplant (DAT), leaf number per plant, leaf length, bulb diameter, pseudostem diameter, fresh weight of bulb, dry weight of bulbs, fresh weight of foliage, dry weight of foliage, yield of bulbs per plot and yield of bulbs (t/ha). The highest bulb yields per plot (2.31 kg) as well as per hectare (23.05 tons) were achieved from the treatment combination of 45 day old seedling and 120 kg K ha-1.","PeriodicalId":186401,"journal":{"name":"Asian Journal of Crop, Soil Science and Plant Nutrition","volume":"38 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1900-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"121663376","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 1900-01-01DOI: 10.18801/ajcsp.010119.01
Amani Ahmed F. Qardash, M. F. Al-Helali, Abdurahman Ali M. Thabet, Muath Abdumajeed Ba’abad
The laboratory studies were conducted to determine the effects of six Pesticides at 3 concentrations (25%, 50% and 100%) respectively on total number of bacteria isolated from the soilin Dhale district, Yemen. The study included isolating and identifying the bacteria form the soil and the tolerance of these bacteria to common pesticides. Nutrient agar medium was used for the count of bacterial. The results showed a lack of numbers of all bacteria in the Nutrient Agar medium treated with Supermectin, Agrinate and Novacron to all (25%, 50% and 100%) concentrations, while the Shahin and Mores no inhibitory effect of 25% concentration, on the bacterial counts. Results showed that pesticides in the laboratory showed its effect on types bacteria in the Nutrient Agar medium and has been associated it effect by quantity additive concentration.
{"title":"Study on the effects of six pesticides on soil bacteria in laboratory","authors":"Amani Ahmed F. Qardash, M. F. Al-Helali, Abdurahman Ali M. Thabet, Muath Abdumajeed Ba’abad","doi":"10.18801/ajcsp.010119.01","DOIUrl":"https://doi.org/10.18801/ajcsp.010119.01","url":null,"abstract":"The laboratory studies were conducted to determine the effects of six Pesticides at 3 concentrations (25%, 50% and 100%) respectively on total number of bacteria isolated from the soilin Dhale district, Yemen. The study included isolating and identifying the bacteria form the soil and the tolerance of these bacteria to common pesticides. Nutrient agar medium was used for the count of bacterial. The results showed a lack of numbers of all bacteria in the Nutrient Agar medium treated with Supermectin, Agrinate and Novacron to all (25%, 50% and 100%) concentrations, while the Shahin and Mores no inhibitory effect of 25% concentration, on the bacterial counts. Results showed that pesticides in the laboratory showed its effect on types bacteria in the Nutrient Agar medium and has been associated it effect by quantity additive concentration.","PeriodicalId":186401,"journal":{"name":"Asian Journal of Crop, Soil Science and Plant Nutrition","volume":"210 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1900-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"116751251","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 1900-01-01DOI: 10.18801/ajcsp.030220.14
T. U. Wara, M. Begum, M. Kader, S. Rasul, M. Hasan, S. Monira
An experiment was conducted to evaluate the weed control efficiency and wheat performance as affected by different types of herbicides at the Agronomy Field Laboratory, Bangladesh Agricultural University, Mymensingh from November 2016 to March 2017. The experiment was laid out in a randomized complete block design and consists of four replications and eleven treatments viz. no weeding (T0), L–Quat 20 SL as pre-emergence herbicide at 2 DAS (T1), Affinity 50.75 WP as post-emergence herbicide at 23 DAS (T2), T1 + T2 (T3), T3 + hand weeding at 40 DAS (T4), Panida 33 EC as pre–emergence herbicide at 2 DAS (T5), U–46D fluid as post-emergence herbicide at 23 DAS (T6), T5 + T6 (T7), T7 + hand weeding at 40 DAS (T8), T5 + T1 + T5 + T6 (T9), T5 + T2 (T10). Fourteen weed species namely Echinochloa cruss–galli, Echinochloa colona Cynodon dactylon, Digitaria sanguinalis, Paspalum distichum, Parapholis incurva, Cyperus rotundus, Chenopodium album, Polygonum hydropiper, Alternanthera sessilis, Oldenlandia corymbosa, Vicia sativa, Physalis heterophylla and Commelina diffusa were infested the experimental field belonging to 9 families where six were grasses, one was sedge and seven were broadleaves. Five most dominant weed species based on importance value in unweeded conditions at 15 DAS were Polygonum hydropiper > Cyperus rotundus > Echinochloa colona > Chenopodium album > Cynodon dactylon. But at 40 DAS and harvest the rank and order of above mentioned five most dominant weed species was differed and Commelina diffusa and Echinochloa cruss–galli were found at 40 DAS and at harvest, respectively instead of Chenopodium album. Both the weed density and dry weight were lowest in T8 treatment followed by T4 treatment at 15 DAS, 40 DAS and harvest. In case of weed control efficiency, these treatments along with T3, T4, T7, T8, T9 and T10 treatments produced the best result as “good control” in comparison to others which produce “fair control” efficiency at 40 DAS. But at harvest, only T4 and T8 produced as “good control” efficiency. The yield and yield components of BARI Gom 24 (Prodip) were statistically significant except the number of non–effective tillers hill–1. The highest grain yield (5 t ha–1) was recorded in the treatment T8 which was statistically identical to the treatment T4 due to having higher number of effective tillers hill–1, higher number of spikelets spike–1, higher number of filled grains spike–1 and 1000-grain weight. The lowest grain yield (2.9 t ha–1) was observed from the control (no weeding) treatment. The highest net returns (61473tk) and BCR (1.64) were obtained under the weed control T8 treatment. It can be concluded that the treatment T8 (Panida 33EC pre-emergence + U 46 D Fluid post–emergence + hand weeding once at 40 DAS) could be applied as the promising practice in wheat cultivation in terms of effective weed control, highest yield, highest economic returns and highest BCR.
2016年11月至2017年3月，在位于迈门辛格的孟加拉国农业大学农学田间实验室进行了不同类型除草剂对小麦除草效率和生产性能的影响试验。实验是在一个随机完全区组设计,由四个复制和十一治疗viz.没有除草(T0), L-Quat 20 SL pre-emergence除草剂2 DAS (T1)、亲和力50.75 WP萌发后除草剂在23岁DAS (T2)、T1和T2 (T3)、T3 +手除草40 DAS (T4)、Panida 33 EC pre-emergence除草剂2 DAS (T5) U-46D流体萌发后除草剂在23 DAS (T6), T5 + T6 (T7), T7 +手除草40 DAS (T8), T5 + T1 + T5 + T6 (T9),T5 + t2 (t10)实验共侵染9科14种杂草，其中禾草类6科、莎草类1科、阔叶类7科，分别为:十字花刺槐、大刺刺槐、马地黄、黄刺刺槐、圆刺刺槐、藜草、水蓼、芒草、黄刺刺槐、白绒刺槐。15 DAS未除草条件下，5种优势杂草的重要性值依次为蓼>沙草>棘球藻>藜草>长爪蟹。但在40 DAS和收获时，上述5种最优势杂草的等级和顺序不同，分别在40 DAS和收获时发现了白花Commelina diffusa和刺青藻(Echinochloa croscrosgalli)，而不是Chenopodium album。15 DAS、40 DAS和收获时，T8处理的杂草密度和干重最低，T4处理次之。就杂草控制效率而言，这些处理与T3、T4、T7、T8、T9和T10处理在40 DAS时产生的“良好控制”效果最好，而其他处理产生的“一般控制”效果最好。但在收获时，只有T4和T8具有“良好的控制”效率。除无效分蘖数hill-1外，BARI Gom 24 (Prodip)的产量和产量构成均具有统计学意义。T8处理的有效分蘖数hill-1、穗数spike-1、灌浆粒数spike-1和千粒重均高于T4处理，籽粒产量最高(5 t hm - 1)，与T4处理在统计学上相同。对照(不除草)处理籽粒产量最低(2.9 t hm - 1)。除杂草T8处理的净收益和BCR最高，分别为61473tk和1.64。综上所述，T8处理(Panida 33EC苗期前+ u46d苗期后+ 40 DAS手动除草1次)具有有效的防杂草效果、最高的产量、最高的经济效益和最高的BCR。
{"title":"Effect of herbicides on weed control and performance of wheat","authors":"T. U. Wara, M. Begum, M. Kader, S. Rasul, M. Hasan, S. Monira","doi":"10.18801/ajcsp.030220.14","DOIUrl":"https://doi.org/10.18801/ajcsp.030220.14","url":null,"abstract":"An experiment was conducted to evaluate the weed control efficiency and wheat performance as affected by different types of herbicides at the Agronomy Field Laboratory, Bangladesh Agricultural University, Mymensingh from November 2016 to March 2017. The experiment was laid out in a randomized complete block design and consists of four replications and eleven treatments viz. no weeding (T0), L–Quat 20 SL as pre-emergence herbicide at 2 DAS (T1), Affinity 50.75 WP as post-emergence herbicide at 23 DAS (T2), T1 + T2 (T3), T3 + hand weeding at 40 DAS (T4), Panida 33 EC as pre–emergence herbicide at 2 DAS (T5), U–46D fluid as post-emergence herbicide at 23 DAS (T6), T5 + T6 (T7), T7 + hand weeding at 40 DAS (T8), T5 + T1 + T5 + T6 (T9), T5 + T2 (T10). Fourteen weed species namely Echinochloa cruss–galli, Echinochloa colona Cynodon dactylon, Digitaria sanguinalis, Paspalum distichum, Parapholis incurva, Cyperus rotundus, Chenopodium album, Polygonum hydropiper, Alternanthera sessilis, Oldenlandia corymbosa, Vicia sativa, Physalis heterophylla and Commelina diffusa were infested the experimental field belonging to 9 families where six were grasses, one was sedge and seven were broadleaves. Five most dominant weed species based on importance value in unweeded conditions at 15 DAS were Polygonum hydropiper > Cyperus rotundus > Echinochloa colona > Chenopodium album > Cynodon dactylon. But at 40 DAS and harvest the rank and order of above mentioned five most dominant weed species was differed and Commelina diffusa and Echinochloa cruss–galli were found at 40 DAS and at harvest, respectively instead of Chenopodium album. Both the weed density and dry weight were lowest in T8 treatment followed by T4 treatment at 15 DAS, 40 DAS and harvest. In case of weed control efficiency, these treatments along with T3, T4, T7, T8, T9 and T10 treatments produced the best result as “good control” in comparison to others which produce “fair control” efficiency at 40 DAS. But at harvest, only T4 and T8 produced as “good control” efficiency. The yield and yield components of BARI Gom 24 (Prodip) were statistically significant except the number of non–effective tillers hill–1. The highest grain yield (5 t ha–1) was recorded in the treatment T8 which was statistically identical to the treatment T4 due to having higher number of effective tillers hill–1, higher number of spikelets spike–1, higher number of filled grains spike–1 and 1000-grain weight. The lowest grain yield (2.9 t ha–1) was observed from the control (no weeding) treatment. The highest net returns (61473tk) and BCR (1.64) were obtained under the weed control T8 treatment. It can be concluded that the treatment T8 (Panida 33EC pre-emergence + U 46 D Fluid post–emergence + hand weeding once at 40 DAS) could be applied as the promising practice in wheat cultivation in terms of effective weed control, highest yield, highest economic returns and highest BCR.","PeriodicalId":186401,"journal":{"name":"Asian Journal of Crop, Soil Science and Plant Nutrition","volume":"6 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1900-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"126343922","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 1900-01-01DOI: 10.18801/ajcsp.010119.02
S. Chanda, M. A. Ali, M. Haque, M. Abdullah, A. Sarwar
Appropriate agricultural practices have positive and sustainable impacts on rural farmers’ livelihood possessions and strategies to overcome the climate vulnerabilities. The benefit cost ratio (BCR) is a relative measure which is used to determine benefit per unit cost and helps farmers in decision making activities. A study was carried out in the Sirajganj district during 2017, to compare the cost and revenue of Aus, Aman and Boro rice, using benefit cost ratio technique. The Sirajganj district consists of nine upzilas. Ten farmers of each upzila were randomly selected and primary data were personally collected from the respondents through structural questionnaire. The data about Aus, Aman and Boro rice and their cost as well as returns were collected in farmers’ field. The collected data were then sorted, scrutinized and analyzed to achieve the goal set for the study. Results revealed that the total cost of production in Aus rice varied 40856-71353 Tk./ha, gross returns 90651-123889 Tk./ha, cost of per kilogram rice production was 9.87 – 15.45 Tk./kg and BCR 1.61-2.22. The total cost of Aman (Local) rice varied 43031-69067 Tk./ha, gross returns 57651-86889 Tk./ha, cost of per kilogram rice production was 14.98 21.40 Tk./kg and BCR 1.25-1.65. The total cost of Aman (HYV) rice varied 66111-78724 Tk./ha, gross returns 123321-164439 Tk./ha, cost of per kilogram rice production was 9.87-14.45 Tk./kg and BCR 1.70-2.22. The total cost of Boro (HYV) rice varied 89129-96886 Tk./ha, gross returns 164439208956 Tk./ha, cost of per kilogram rice production was 9.31-13.84 Tk./kg and BCR 1.90-2.31. The total cost of Boro (Hybrid) rice varied 92868-99684 Tk./ha, gross returns 205524-226083 Tk./ha, cost of per kilogram rice production 8.99-10.74 Tk./kg and BCR 2.10-2.36. Aus/Aman rice cultivation is eco-friendly i.e., needs less ground water, lower risk of early floods and hailstorms, etc.
{"title":"Cost of production and cost benefit analysis of different rice in Sirajganj district","authors":"S. Chanda, M. A. Ali, M. Haque, M. Abdullah, A. Sarwar","doi":"10.18801/ajcsp.010119.02","DOIUrl":"https://doi.org/10.18801/ajcsp.010119.02","url":null,"abstract":"Appropriate agricultural practices have positive and sustainable impacts on rural farmers’ livelihood possessions and strategies to overcome the climate vulnerabilities. The benefit cost ratio (BCR) is a relative measure which is used to determine benefit per unit cost and helps farmers in decision making activities. A study was carried out in the Sirajganj district during 2017, to compare the cost and revenue of Aus, Aman and Boro rice, using benefit cost ratio technique. The Sirajganj district consists of nine upzilas. Ten farmers of each upzila were randomly selected and primary data were personally collected from the respondents through structural questionnaire. The data about Aus, Aman and Boro rice and their cost as well as returns were collected in farmers’ field. The collected data were then sorted, scrutinized and analyzed to achieve the goal set for the study. Results revealed that the total cost of production in Aus rice varied 40856-71353 Tk./ha, gross returns 90651-123889 Tk./ha, cost of per kilogram rice production was 9.87 – 15.45 Tk./kg and BCR 1.61-2.22. The total cost of Aman (Local) rice varied 43031-69067 Tk./ha, gross returns 57651-86889 Tk./ha, cost of per kilogram rice production was 14.98 21.40 Tk./kg and BCR 1.25-1.65. The total cost of Aman (HYV) rice varied 66111-78724 Tk./ha, gross returns 123321-164439 Tk./ha, cost of per kilogram rice production was 9.87-14.45 Tk./kg and BCR 1.70-2.22. The total cost of Boro (HYV) rice varied 89129-96886 Tk./ha, gross returns 164439208956 Tk./ha, cost of per kilogram rice production was 9.31-13.84 Tk./kg and BCR 1.90-2.31. The total cost of Boro (Hybrid) rice varied 92868-99684 Tk./ha, gross returns 205524-226083 Tk./ha, cost of per kilogram rice production 8.99-10.74 Tk./kg and BCR 2.10-2.36. Aus/Aman rice cultivation is eco-friendly i.e., needs less ground water, lower risk of early floods and hailstorms, etc.","PeriodicalId":186401,"journal":{"name":"Asian Journal of Crop, Soil Science and Plant Nutrition","volume":"4 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1900-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"122554755","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 1900-01-01DOI: 10.18801/ajcsp.060222.28
M. Mala, M. Baishnab
Non-crop habitats provide essential resources for natural enemies such as plant-derived food, such as nectar or pollen, shelter, alternative prey, protection from pesticides and other disturbances, and moderate microclimate and hibernation sites. The main aim of habitat management is to offer a favourable ecological infrastructure within the landscape. Different ways of habitat management such as selecting appropriate plant species, understanding behavioural mechanism, maintaining the spatial scale and spatial arrangement with heterogeneity has a positive impact on conservation biological control. Harmful conditions are mitigated or favourable conditions are increased for natural enemies in conservation biological control. In previous days, conservation and biological control were not applied a lot, but it has gotten more attention. Natural pest management can be conducted at different spatial scales like at the landscape scale and at the field scale; natural pest management at the landscape scale through habitat management is focused on in this essay. In agricultural landscapes, non-crop habitats are comprised of hedgerows, field margin, road verges, fallows, meadows and often woody forests. Different agricultural pest species and many natural enemies are associated with these non-crop habitats. The proportion of habitat defines landscape complexity can influence the diversity of animals, plants and microorganisms. Ecosystem services that improve ecosystems through nutrient cycling, water regulation and pest suppression are positively influenced by landscape complexity that can help reduce pest density and crop injury. Habitat management has a higher level of opportunity to maximize multi-functional ecosystem services through a wider scale of landscape management. Therefore, habitat management can be combined into land use types of local, regional, nationwide, and worldwide economic aspects to reduce the dependency of high input based on existing agriculture.
{"title":"Non-crop habitat management: Promoter of natural enemies of crop pests","authors":"M. Mala, M. Baishnab","doi":"10.18801/ajcsp.060222.28","DOIUrl":"https://doi.org/10.18801/ajcsp.060222.28","url":null,"abstract":"Non-crop habitats provide essential resources for natural enemies such as plant-derived food, such as nectar or pollen, shelter, alternative prey, protection from pesticides and other disturbances, and moderate microclimate and hibernation sites. The main aim of habitat management is to offer a favourable ecological infrastructure within the landscape. Different ways of habitat management such as selecting appropriate plant species, understanding behavioural mechanism, maintaining the spatial scale and spatial arrangement with heterogeneity has a positive impact on conservation biological control. Harmful conditions are mitigated or favourable conditions are increased for natural enemies in conservation biological control. In previous days, conservation and biological control were not applied a lot, but it has gotten more attention. Natural pest management can be conducted at different spatial scales like at the landscape scale and at the field scale; natural pest management at the landscape scale through habitat management is focused on in this essay. In agricultural landscapes, non-crop habitats are comprised of hedgerows, field margin, road verges, fallows, meadows and often woody forests. Different agricultural pest species and many natural enemies are associated with these non-crop habitats. The proportion of habitat defines landscape complexity can influence the diversity of animals, plants and microorganisms. Ecosystem services that improve ecosystems through nutrient cycling, water regulation and pest suppression are positively influenced by landscape complexity that can help reduce pest density and crop injury. Habitat management has a higher level of opportunity to maximize multi-functional ecosystem services through a wider scale of landscape management. Therefore, habitat management can be combined into land use types of local, regional, nationwide, and worldwide economic aspects to reduce the dependency of high input based on existing agriculture.","PeriodicalId":186401,"journal":{"name":"Asian Journal of Crop, Soil Science and Plant Nutrition","volume":"54 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1900-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"128982287","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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