Effects of Planting Date and Growth Hormone on Growth and Yield of Cauliflower

Abstract

An experiment was conducted at the Horticulture Farm of Bangladesh Agricultural University, Mymensingh, during the period from October 2014 to March 2015 to study the effects of planting date and growth hormone on the growth and yield of cauliflower. The experiment consisted of two factors; Factor A: Three planting dates, such as P1: Planting on 1 November; P2: Planting on 15 November and P3: Planting on 1 December; Factor B: Four levels of Growth hormone, such as H0: No Hormone (control); H1: 10 ppm IAA (Indole-3 Acetic Acid); H2: 70 ppm GA3 (Gibberellic Acid) and H3: 10 ppm IAA + 70 ppm GA3. The experiment was laid out following Randomized Complete Block Design (RCBD) with three replications. In case of planting date, the highest plant height (63.26 cm), number of leaves per plant (24.13), leaf length (59.26 cm), leaf breadth (19.31 cm) at harvest, curd diameter (22.25 cm), marketable yield per hectare (28.11 t ha-1) were recorded from P2 and the lowest of those parameters were recorded from P3. In case of growth hormone the highest plant height (63.10 cm), number of leaves per plant (23.66), leaf length (59.05 cm), leaf breadth (18.98 cm) at harvest, curd diameter (22.39 cm), marketable yield per hectare (29.88 t ha-1) were recorded from H3 and the lowest of those perameters were recorded from H0. Combination of planting date and growth hormone the highest plant height (65.96 cm), number of leaves per plant (26.42), leaf length (63.64 cm), leaf breadth (20.92 cm) at harvest, curd diameter (25.75 cm), marketable yield per hectare (31.03 t ha-1) were recorded from planting on 15 November and 10 ppm IAA with 70 ppm GA3 (P2H3) and the lowest parameters (21.75 t ha-1) were recorded from planting on 1 December and no hormone (P3H0). It is apparent from the above results that the combination of planting on 15 November and 10 ppm IAA with 70 ppm GA3 (P2H3) was more productive from the other combinations.J. Environ. Sci. & Natural Resources, 9(2): 143-150 2016

Studies on the Interaction Effect of Planting Dates and Nitrogen Levels on Growth, Yield and Economics of Red Cabbage (Brassica oleracea var. capitata f. rubra)

“…However, at 30DAT, 60DAT and at final harvest, maximum plant height of 22.83cm, 29.86cm and 38.43cm respectively was recorded with combination of 15th October planting date and 200kg N/ha (D2N4) resulted in synthesis of more plant metabolites which has increased plant height, whereas the minimum plant height of 13.18cm, 17.56cm and 22.35cm respectively was recorded with combination of 30th September planting date and 80kg N/ha (D1N1). Similar findings have been reported in cabbage (Lavanya et al, 2015), cauliflower (Rahman et al, 2016), lettuce (Rehman et al, 2005) and okra (Muhammad et al, 2001). The data is presented in Table 1 and Figure 1.…”

“…There was a significant interaction between planting dates and nitrogen levels and the highest values were obtained during 30th September planting date and 200kg N/ha. Similar results were obtained in cauliflower (Rahman et al, 2016), radish (Akoumianakis et al, 2011) and potato (Yenagi et al, 2003). The data is presented in Table 2 and Figure 3.…”

Foliar Application of GA3 Stimulates Seed Production in Cauliflower

“…The present results differed from the findings of Akhter [82], who recorded the highest length of leaf in cauliflower with the application of GA 3 at 100 ppm. Rahman et al [83] found the highest leaf length and breadth at harvest due to the application of 10 ppm NAA with 70 ppm GA 3 . This variation might be due to the application of NAA in addition to GA 3 .…”

Growth responses and yield of cauliflower (Brassica oleracea var. botrytis L.) to the delayed transplanting and drought stress

“…This condition might cause the delay of seedling transplanting time. Optimum planting time is one of the important factors for producing maximum yield and benefit [5]. Optimum seedlings age of Brassica napus produce higher yield because of their strong growth [6] and more tolerant to disease than younger plants [7].…”