Effect of foliar application of urea and planofix on the foliage yield of coriander.
Note: The authorship was changed on 23.02.2016 FROM Abdur Rakib, M. Kamruzzaman 1 *, Soyema Khatun 1 and M. Moniruzzaman 2 TO Abdur Rakib 1 *, M. Moniruzzaman 2 , M. Hasan 3 and M.M. Rahman 3 . The authorship is changed due to request of the principal author to add two co-authors of his major professor and advisory committee member of postgraduate study and two co-authors are excluded from the authorship and acknowledged them for their contribution in the manuscript. ______________________________________________________________ Abstract: An experiment on coriander ( Coriandrum sativum L. ) was conducted at the experimental field of Department of Horticulture, Bangabandhu Sheikh Mujibur Rahman Agricultural University (BSMRAU), Gazipur during November 2012 to April 2013 to find out the suitable foliar doses and application frequency of urea and planofix (NAA). The experiment was laid out in factorial randomized complete block design with three replications. The treatment consisted of six foliar dozes viz. T 1 (Tap water as control), T 2 (0.10 % urea), T 3 (0.25 % urea), T 4 (0.40 % urea), T 5 (5 ppm planofix) and T 6 (10 ppm planofix) and three application frequencies viz. F 1 [20 days after sowing (20 DAS)], F 2 (30 DAS) and F 3 (20 and 30 DAS). Maximum foliage yield (6.94 t/ha) was recorded in 10 ppm planofix coupled with it’s twice application at 20 and 30 DAS which was closely followed the foliage yield (6.33 t/ha) by 5 ppm planofix with the same application frequency. The foliage yield was increased with the increase in urea concentration. The highest foliage yield (5.37 t/ha) was also recorded from twice application of urea and planofix at 20 and 30 DAS, respectively. Planofix 10 ppm with its twice application at 20 and 30 DAS gave the highest benefit-cost of ration 2.51. Int. J. Agril. Res. Innov. & Tech. 5 (1): 40-44, June, 2015
GROWTH AND LEAF YIELD DYNAMICS OF COOL SEASON CORIANDER AS INFLUENCED BY CUTTING AND FOLIAR NITROGEN APPLICATION
An experiment was conducted to study regrowth and yield of coriander influenced by nitrogen (N) with five different urea doses (0, 1.5, 2.0, 2.5, 3.0% by volume) as foliar spray. Spraying of urea has a significant impact on growth and yield in the second cut. Leaf emergence rate (LER) was higher during initial growth phase and then drastically reduced until first cutting, whereas the stem elongation rate (SER) recorded its peak value during 75-105 DAS. Impact of foliar spray was conspicuous during the later phase of regrowth with the treatment of 2.5% urea achieving the highest SER. Additional return due to spraying was positive up to a dose of 2.5% urea and decreased thereafter. Hence, the study indicated that a foliar spray of nitrogen (2.5% urea) may be beneficial for coriander leaf production under multicut system and the crop is sensitive to rainfall, phototemperature, and morning humidity.
Pungency and Sugars of Short-day Onions as Affected by Sulfur Nutrition
Sixteen short-day onion (Allium cepa L.) cultivars with high (4.0 meq·liter -1 ) and low S (0.1 meq·liter -1 ) fertility were evaluated for several characteristics associated with bulb flavor. Sulfur levels interacted with cultivars in influencing bulb pungency and concentrations of S and individual sugars, except for fructose. Enzymatically formed pyruvic acid correlated poorly with bulb S concentration, which suggests differential partitioning of S into flavor and nonflavor compounds among cultivars. Bulb percent dry weight correlated negatively with bulb S concentration. Since poor correlations were found between enzymatically formed pyruvic acid and water-soluble carbohydrates, we postulate that pungency and sweetness function independently in bulbs of fresh-market short-day onion cultivars. Flavor in onions (Allium cepa) is dominated by up to 80 unique S