M. Quddus, M. A. Hossain, H. M. Naser, B. Anwar, Md. Abdus Sattar, H. Mazed
{"title":"Assessment of Potassium Element on Lentil (Lens culinaris Medic) Agronomy and Nutrient Use Efficiency in Calcareous Soils","authors":"M. Quddus, M. A. Hossain, H. M. Naser, B. Anwar, Md. Abdus Sattar, H. Mazed","doi":"10.11648/j.jenr.20190803.13","DOIUrl":null,"url":null,"abstract":"Potassium (K) is considered as key element for plant growth and physiology and improvement of productivity and quality of crops. The potassium (K) reduction from agricultural soils of Indo-Gangetic plain had been observed due to rapidly increasing intensive cropping systems, in combination with imbalanced fertilization. Now, burning issue is needed to better understand the role and dynamic of K in plants and K-use efficiency of crops. Hence, this study was undertaken during two consecutive years of 2015-16 and 2016-17 to know the effects of different levels of potassium on lentil productivity, nodulation, nutrient uptake and K use efficiency. The experiment was laid out in randomized complete block design considering five treatments with thrice replicates. The treatments were T1 (K Control), T2 (15 kg K ha-1), T3 (30 kg K ha-1), T4 (45 kg K ha-1) and T5 (60 kg K ha-1) along with the blanket dose of N18P20S10Zn2B1.5 kg ha-1 and cowdung 3 t ha-1. Yield and yield attributes of lentil responded significantly to K fertilizer. The highest mean seed yield (1684 kg ha-1) and maximum seed yield increase over control (31.9%) got from T5 treatment followed by T4 treatment. The highest total nutrient (N, P, K, S, Zn and B) uptake, maximum nodulation and the highest protein content (29.4%) in seed was, however, recorded from the plot receiving of 60 kg K ha-1. Apparent K recovery efficiency was recorded higher (17.8%) from T4 treatment. Apparent K recovery efficiency followed the order: T4>T5>T3>T2. From the economic point of view, T5 followed by T4 treatment is viable and sound. The results of the experiment suggest that 60 kg K ha-1 might be applied along with N18P20S10Zn2B1.5 kg ha-1 for lentil cultivation in calcareous soils of Bangladesh. The K rates for fertilizer recommendation in lentil need to be revised to take account for highest yield by higher increasing rate of K in soil.","PeriodicalId":424174,"journal":{"name":"Journal of Energy and Natural Resources","volume":"83 1","pages":"0"},"PeriodicalIF":0.0000,"publicationDate":"2019-10-18","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"0","resultStr":null,"platform":"Semanticscholar","paperid":null,"PeriodicalName":"Journal of Energy and Natural Resources","FirstCategoryId":"1085","ListUrlMain":"https://doi.org/10.11648/j.jenr.20190803.13","RegionNum":0,"RegionCategory":null,"ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"","JCRName":"","Score":null,"Total":0}
引用次数: 0
Abstract
Potassium (K) is considered as key element for plant growth and physiology and improvement of productivity and quality of crops. The potassium (K) reduction from agricultural soils of Indo-Gangetic plain had been observed due to rapidly increasing intensive cropping systems, in combination with imbalanced fertilization. Now, burning issue is needed to better understand the role and dynamic of K in plants and K-use efficiency of crops. Hence, this study was undertaken during two consecutive years of 2015-16 and 2016-17 to know the effects of different levels of potassium on lentil productivity, nodulation, nutrient uptake and K use efficiency. The experiment was laid out in randomized complete block design considering five treatments with thrice replicates. The treatments were T1 (K Control), T2 (15 kg K ha-1), T3 (30 kg K ha-1), T4 (45 kg K ha-1) and T5 (60 kg K ha-1) along with the blanket dose of N18P20S10Zn2B1.5 kg ha-1 and cowdung 3 t ha-1. Yield and yield attributes of lentil responded significantly to K fertilizer. The highest mean seed yield (1684 kg ha-1) and maximum seed yield increase over control (31.9%) got from T5 treatment followed by T4 treatment. The highest total nutrient (N, P, K, S, Zn and B) uptake, maximum nodulation and the highest protein content (29.4%) in seed was, however, recorded from the plot receiving of 60 kg K ha-1. Apparent K recovery efficiency was recorded higher (17.8%) from T4 treatment. Apparent K recovery efficiency followed the order: T4>T5>T3>T2. From the economic point of view, T5 followed by T4 treatment is viable and sound. The results of the experiment suggest that 60 kg K ha-1 might be applied along with N18P20S10Zn2B1.5 kg ha-1 for lentil cultivation in calcareous soils of Bangladesh. The K rates for fertilizer recommendation in lentil need to be revised to take account for highest yield by higher increasing rate of K in soil.
钾(K)被认为是植物生长生理和提高作物生产力和品质的关键元素。印度恒河平原农业土壤钾(K)的减少是由于快速增加的集约种植制度,加上不平衡的施肥。为了更好地了解钾在植物中的作用和动态以及作物对钾的利用效率,需要进一步研究燃烧问题。因此,本研究在2015-16和2016-17连续两年进行,以了解不同钾水平对小扁豆生产力、结瘤、养分吸收和钾利用效率的影响。试验采用随机完全区组设计,5个处理,3个重复。处理分别为T1(对照)、T2 (15 kg kha -1)、T3 (30 kg kha -1)、T4 (45 kg kha -1)和T5 (60 kg kha -1), N18P20S10Zn2B1.5 kg ha-1和牛粪3 t ha-1。小扁豆产量和产量性状对钾肥有显著响应。T5处理籽粒平均产量最高(1684 kg hm -1),较对照增产31.9%,T4处理次之。籽粒总养分(N、P、K、S、Zn、B)吸收量、结瘤量和蛋白质含量均以60kg K hm -1处理最高(29.4%)。T4处理的钾元素表观回收率较高(17.8%)。K的表观回收率依次为:T4>T5>T3>T2。从经济角度看,T5后T4处理是可行的、合理的。试验结果表明,在孟加拉国石灰质土壤中,施用60 kg K ha-1和N18P20S10Zn2B1.5 kg ha-1可用于小扁豆栽培。小扁豆施肥的钾用量需要修改,以考虑到土壤中钾的较高增加速度带来的最高产量。