{"title":"Nitrogen-management strategy through leaf-colour chart and SPAD meter for optimizing the productivity in irrigated wheat (Triticum aestivum)","authors":"","doi":"10.59797/ija.v68i2.364","DOIUrl":null,"url":null,"abstract":"A field experiment was conducted during the winter (rabi) season of 2020–21 at Bihar Agricultural University, Sabour, Bhagalpur, to study the effect leaf-colour chart (LCC) and SPAD meter on productivity of irrigated wheat (Triticum aestivum L.). The experiment, having 8 treatments, was laid out in a randomized block design. The first 4 treatments (T1 to T4 ) were LCC-based, T5 and T6 were the SPAD meter-based management practices and T7 was considered as fixed-time N management (FTNM) and T8 was kept as control where no N was applied. The SPADbased treatments T5 and T6 received 140 kg N/ha which was higher than all the other N management treatments resulted 13% higher ears/m2 and 18% higher grains/ear over the LCC-based N-management treatments. Among the LCC-based practice, treatment T4 recorded significantly highest grain yield (4.01 t/ha) but was lower (10.4%) than that of grain yield achieved in T5 treatment. The LCC-based treatments T1 to T3 though received a lower dose of N fertilizer (19%; average of T1 to T3 ) compared to the FTNM (T7 ), returns maintained the similar yield components with the FTNM. Therefore, use of farmers’ friendly and cost-effective tool LCC is very useful which saved the N fertilizer (19%) without hampering the yield components. Thus, LCC and SPAD may be effective tool for efficient need-based fertilizer N management using LCC and SPAD meter in improving crop growth for higher productivity in rational manner.","PeriodicalId":35528,"journal":{"name":"Indian Journal of Agronomy","volume":null,"pages":null},"PeriodicalIF":0.0000,"publicationDate":"2023-07-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"0","resultStr":null,"platform":"Semanticscholar","paperid":null,"PeriodicalName":"Indian Journal of Agronomy","FirstCategoryId":"1085","ListUrlMain":"https://doi.org/10.59797/ija.v68i2.364","RegionNum":0,"RegionCategory":null,"ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"Q4","JCRName":"Agricultural and Biological Sciences","Score":null,"Total":0}
引用次数: 0
Abstract
A field experiment was conducted during the winter (rabi) season of 2020–21 at Bihar Agricultural University, Sabour, Bhagalpur, to study the effect leaf-colour chart (LCC) and SPAD meter on productivity of irrigated wheat (Triticum aestivum L.). The experiment, having 8 treatments, was laid out in a randomized block design. The first 4 treatments (T1 to T4 ) were LCC-based, T5 and T6 were the SPAD meter-based management practices and T7 was considered as fixed-time N management (FTNM) and T8 was kept as control where no N was applied. The SPADbased treatments T5 and T6 received 140 kg N/ha which was higher than all the other N management treatments resulted 13% higher ears/m2 and 18% higher grains/ear over the LCC-based N-management treatments. Among the LCC-based practice, treatment T4 recorded significantly highest grain yield (4.01 t/ha) but was lower (10.4%) than that of grain yield achieved in T5 treatment. The LCC-based treatments T1 to T3 though received a lower dose of N fertilizer (19%; average of T1 to T3 ) compared to the FTNM (T7 ), returns maintained the similar yield components with the FTNM. Therefore, use of farmers’ friendly and cost-effective tool LCC is very useful which saved the N fertilizer (19%) without hampering the yield components. Thus, LCC and SPAD may be effective tool for efficient need-based fertilizer N management using LCC and SPAD meter in improving crop growth for higher productivity in rational manner.
期刊介绍:
Indian Journal of Agronomy welcomes concise articles presenting original research data based on field experiments on all aspects of agronomy in different crops and related cropping systems. • The journal publishes only full length comprehensive articles based on new approaches/findings in English only. • Review articles are also considered but these are normally solicited by Editorial Board. However, the authors who wish to contribute a review on their own based on their standing in the relevant field may contact the Secretary or Chief Editor with a broad outline before submitting the manuscript.