Trinexapac-ethyl Winter Wheat (Triticum aestivum L.) Cultivar Evaluations with Variable Rates of Nitrogen
Journal Title: Journal of Experimental Agriculture International - Year 2017, Vol 16, Issue 5
Abstract
In the southeastern region of the United Sates, soft red winter wheat (Triticum aestivum L.) is grown in double-crop production systems. The plant growth regulator (PGR) trinexapac-ethyl is applied to improve wheat morphology by reducing height and increasing stem wall diameter, which can promote maximum yields. An experiment was conducted from 2014 to 2015 to evaluate the effects of trinexapac-ethyl with varying N rates on growth, lodging, and yield of five soft red winter wheat cultivars. Soft red winter wheat was treated with trinexapac-ethyl at 233 or 256 g ai ha-1at 60 d after planting, or as a split application of 128 g ai ha-1 60 and 108 d after planting. Nitrogen fertilizer at 112 or 168 kg ha-1 was applied at Feekes’ stage 3-4. Crop heights, spike counts per m2, and node length from the flag leaf to the base of the floral spike were collected 144 d after planting, with final yields, grain moisture, and test weight determined after harvest. There were no interactions for the main effects of PGR by nitrogen rate, PGR by cultivar, or cultivar by nitrogen rate. Trinexapac-ethyl at 256 at Feekes 4, or split applied at 128 g ha-1 at Feekes 4 and 7, significantly reduced soft red winter wheat height, and distance from the flag-leaf node to base of the floral spike as compared to the non-treated control. While there were no yield differences for trinexapac-ethyl treatments, height reductions and improved stem strength would reduce lodging that can often lead to crop failure.
Authors and Affiliations
D. B. Simmons, T. L. Grey, W. Faircloth, W. K. Vencill, T. M. Webster
Keywords
Related Articles
- EP ID EP315234
- DOI 10.9734/JEAI/2017/33647
- Views 106
- Downloads 0
Effect of Compost Amendment on Plant Growth and Yield of Radish (Raphanus sativus L.)
Aim: To assess the effect of different levels of compost on plant growth and yield of radish. Study Design: The pot experiment was carried out using a randomised complete block design with four treatments and five replic...
Effect of Different Types of Mulching and Plant Spacing on Weed Control, Canopy Cover and Yield of Sweet Potato (Ipomoea batatas (L.) Lam)
The aim of the study was to determine the effects of mulching, plant spacing and other control measures on effectiveness of weed control, canopy cover and sweet potato yield. The cultivar Blesbok was planted in a randomi...
Effect of Growth Regulators on Plant Growth and Flowering in Dahlia (Dahlia variabilis) cv. Charmit
An experiment entitled “Effect of growth regulators on plant growth and flowering in dahlia (Dahlia variabilis) cv. Charmit” was conducted to evaluate the response of dahlia to different growth regulators (Ethephon @ 500...
Optimum Transplanting Date Maximizes the Growth and Yield of Rice in Bangladesh
Rice is the staple food crop and it grows in three seasons in Bangladesh. The optimum transplanting time can satisfy its appropriate temperatures and solar radiation for vigorous vegetative growth and maximum grain yield...
Assessing the Effects of Water Management Regimes and Rice Residue on Growth and Yield of Rice in Uganda
Aim: This study was conducted to assess the influence of different water and rice straw management practices and rice genotypes on growth and yield of rice in Uganda. Study Design: Field experimental design was a Randomi...