Growth and yield performance of wheat (Triticum Aestivum L.) As influenced by combined application of naa and n-fertilizer in two sowing time

Pub Date : 2023-10-12 DOI:10.3329/bjb.v52i3.68944

A. G. Adam, N. Jahan, Parveen Rashid

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Abstract

A field experiment was conducted to investigate the effect of NAA (both as foliar and seed soaking) in combination with different N-levels on growth and yield performance of BARI Gom-25 in two sowing time (November 15 and November 22). The experiment consisted of nine treatments viz. control, F4, SOF0, SOF1, SOF2, SOF3, SOF4, SSF0 and SSF1. Results revealed that seed soaking with 10 ppm NAA in combination with 75% recommended dose nitrogen (RDN) produced tallest plants and maximum number of tillers, leaves, total dry matter per plant with significant variations in majority of case in both the sowing time. In case of November 15 sown wheat, seed soaking with 10 ppm NAA in combination with 75% RDN treatment resulted maximum number of effective tillers per plant (6.67), longest spike (9.75), highest dry weight of spike (16.54 cm), highest number of grains per plant (198.08) and maximum yield per plant (7.75 g). Maximum yield per plant obtained from this best performed treatment was 24.80 and 19.81% higher over 10 ppm NAA in combination with RDN and RDN treatment alone, respectively. Findings showed that seed soaking treatment was more effective than foliar spray treatment and wheat sown on November 15 produced better stimulation than sown on November 22 in majority of case. Out of nine treatments, seed soaking with 10 ppm NAA in combination with 75% RDN resulted higher growth and maximum yield in BARI Gom-25. Bangladesh J. Bot. 52(3): 853-860, 2023 (September)

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在两个播种期联合施用呐呐和氮肥对小麦（Triticum Aestivum L.）生长和产量表现的影响

通过田间试验研究了 NAA（叶面喷施和浸种）与不同氮含量相结合对两个播种期（11 月 15 日和 11 月 22 日）BARI Gom-25 的生长和产量表现的影响。试验包括九个处理，即对照、F4、SOF0、SOF1、SOF2、SOF3、SOF4、SSF0 和 SSF1。结果表明，用 10 ppm NAA 与 75% 的推荐剂量氮素（RDN）混合浸种，在两个播种期的大多数情况下，都能培育出最高的植株和最多的分蘖数、叶片数、单株总干物质，且差异显著。在 11 月 15 日播种的小麦中，用 10 ppm NAA 与 75% RDN 混合浸种，可使每株有效分蘖数最多（6.67），穗最长（9.75），穗干重最高（16.54 厘米），每株穗粒数最高（198.08），每株产量最高（7.75 克）。与 10 ppm NAA 结合 RDN 处理和单独 RDN 处理相比，该最佳处理的最高单株产量分别高出 24.80% 和 19.81%。研究结果表明，浸种处理比叶面喷洒处理更有效，在大多数情况下，11 月 15 日播种的小麦比 11 月 22 日播种的小麦产生更好的刺激作用。在九种处理中，用 10 ppm NAA 与 75% RDN 混合浸种可使 BARI Gom-25 的小麦生长更快，产量最高。孟加拉国植物学杂志52(3):853-860，2023 年（9 月）

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