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
Effect of seed treatment and foliar spray of thiourea on growth, yield and quality of coriander (Coriandrum sativum L.) under different irrigation levels
A field experiment was conducted during the rabi 2011-2012 at research farm, College of Horticulture, Mandsaur (Madhya Pradesh) to study the effect of seed treatment and foliar spray of thiourea on growth, yield and quality of coriander (Coriandrum sativum L.) under different irrigation levels. The experiment consist three irrigation levels (in main plots) viz., (I 1 -one, I 2 -three and I 3 -six irrigations) and six thiourea treatments (in sub plots) viz., (T 1 -Control, T 2 -Thiourea 500 ppm seed treatment for 4 hours, T 3 -Thiourea 1000 ppm seed treatment for 4 hours, T 4 -Thiourea 500 ppm foliar spray at vegetative and flowering stages, T 5 -Thiourea 500 ppm seed treatment for 4 hours + Thiourea 500 ppm foliar spray at vegetative and flowering stages and T 6 -Thiourea 1000 ppm seed treatment for 4 hours + Thiourea 1000 ppm. foliar spray at vegetative and flowering stages). Both irrigation levels and thiourea treatments significantly influenced the growth, yield and quality attributes of coriander. Irrigation level I 3 and thiourea treatment T 6 resulted in significant higher plant height at 90 DAS, number of branches plant -1 , fresh weight of leaves plant -1 , dry weight of leaves plant -1, days taken to harvest, number of umbels plant -1 , number of umbellets umbel -1 , number of seeds umbel -1 , test weight, seed yield, straw yield, biological yield, chlorophyll content of leaves, essential oil content of seeds and net return. However days to 50 % flowering was non significantly affected by thiourea treatments. Maximum harvest index and cost: benefit ratio was also found with Irrigation level I 3 and thiourea treatment T 6.
Productivity of Cumin (Cuminum cyminum L.) As Affected by Irrigation Levels and Row Spacing
In Order to study the effect of irrigation levels and row spacing on seed yield and essential oil of cumin (Cuminum cyminum L.), an experiment was conducted at research field of Faculty of Agriculture, Lorestan University, Khorramabad, Iran in 2000. The experiment was carried out as a split-plot arranegment based on a randomized complete block design with three replications. Irrigation level was the main factor with three levels (no irrigation, one irrigation at sowing, and two irrigations at sowing and seed formation). Row spacing was the subsidiary factor with three levels (20 cm, 30 cm, 40 cm). Seed yield, essential oil content and essential oil yield were recorded. Essential oil was extracted by hydro-distillation using Clevenger apparatus. Results showed that seed yield and essential oil yield increased with decreasing row spacing. Two irrigations increased seed yield and essential oil yield, while, one irrigation didn't show any significant difference with no irrigation. The maximum seed yield and essential oil yield (with 721.7 and 7.48 kg.ha -1 , respctively) were produced by two irrigations combined with 20 cm row spacing. Moreover, essential oil content decreased as irrigation levels increased, whereas, row spacing had no effect on essential oil content. No irrigation combined with 40 cm row spacing produced the highest essential oil content (1.37%). It is suggested that, irrigation at seed formation stage combined with row distance of 20 cm (150 plants.m -2 ) could produce desirable seed and essential oil yield in cumin under Iran (Khorramabad) climatic conditions.