Four varieties of Brassica campestris L., ‘Toria‐A’, ‘Toria‐BP’, ‘Toria‐TP’ and ‘Toria‐7’, and their corresponding crosses and backcrosses were studied with respect to the inheritance of seed coat color. Chi‐square tests were performed to assess the results obtained. It was found that seed coat color was conditioned by a single gene and that reddish brown was completely dominant over yellow.
Effect of Paecilomyces lilacinus on tomato plant growth and the management of root knot nematodes in tomato was studied. The research work was conducted in Microbiology & Bio-control Laboratory, Department of Plant Pathology, Bangladesh Agricultural University, Mymensingh and in Net-house of Department of Plant Pathology, Bangladesh Agricultural University, Mymensingh, during the period from July, 2016 to October, 2017. In net-house pot culture experiment, four different treatments were used viz., T1: Inoculation of egg masses (10 egg masses/plant) of Nematodes (Meloidogyne spp.), T2: Application of P. lilacinus, T3: Application of egg masses of Nematodes and P. lilacinus simultaneously, and T4: Control (non-treated). Spore suspension (10×105 Conc.) of P. lilacinus was mixed with the soil before transplantation and Meloidogyne spp. was inoculated on three days after transplantation. Application of P. lilacinus in soil enhanced the plant growth parameters of tomato plants. Inoculation of Meloidogyne spp. reduced plant growth and the reduction was increased with the increase of inoculum density of Meloidogyne spp. Maximum plant growth reduction was recorded when Meloidogyne spp. was inoculated alone. The maximum plant growth was recorded in case of application of P. lilacinus to soil. A high percentage (85%) of egg masses of Meloidogyne spp. was infected by P. lilacinus when applied together
J. Bangladesh Agril. Univ. 17(1): 9–13, March 2019
Large and small seeds of each of four strains of rapeseed (Brassica campestris L. var. toria) were studied with respect to their effects on five yield‐contributing characters. Highly significant differences in character performance were obtained between large and small categories of seeds. Plants developed from large seeds produced more fruits per plant, larger fruits, heavier seeds, and higher seed yield per plant than plants from small seeds, but had fewer seeds per fruit.
This study was undertaken to determine and compare the profitability of Boro rice and potato production. In total 60 farmers of which 30 Boro rice growers and 30 potato growers were selected randomly from four villages of Gouripur Upazila in Mymensingh district. Descriptive as well as statistical analysis were done to achieve the objectives of the study. The Cobb-Douglas production function was used to determine the effects of individual inputs on Boro rice and potato production. The major findings of the study were that the cultivation of Boro rice and potato was profitable from the view point of farmers. The per hectare total return from Boro rice and potato were Tk. 83,320.00 and Tk. 2,62,625.22 respectively. The gross cost of Boro rice and potato production were Tk. 54,202.74 and 1,20,221.71 respectively. Again the net return from Boro rice and potato were Tk. 24,117.26 and 1,42,403.51 respectively. The Benefit Cost Ratio (BCR) was 1.41 and 2.18 respectively for Boro rice and potato production. The results indicated that potato production was more profitable than Boro rice production. It was also evident from the study that per hectare net returns were influenced by most of the factors included in model.
An experiment was conducted to study the effect of mulch (non-mulch and straw mulch) and different levels of nitrogen (0, 40, 80 and 120 kg ha-1) and potassium (0, 37.5, 75 and 112.5 kg ha-1) on the growth and yield of onion. Plants grown with straw mulch gave higher bulb yield (10.89 t ha-1) which showed 13.79% increase over non-mulch. Nitrogen increased the bulb yield significantly.The highest nitrogen level gave the highest bulb yield (12.13 t ha-1), which was 41.54% increase over control. Potassium increased bulb yield compared to control, but its different levels had identical results on yield. Nitrogen and mulch together produced significant variations. The Nitrogen at the highest level (120 kg ha-1) along with straw mulch gave the highest yield (13.31 t ha-1). Potassium together with mulch also exhibited significant variation on yield and yield components. Plants grown with the highest level of potassium (112.5 kg ha-1) along with straw mulch gave the highest bulb yield (11.58 t ha-1). Nitrogen and potassium as 120 kg N ha-1 × 75.0 kg K ha-1 gave the highest bulb yield (13.07 t ha-1). Nitrogen and potassium at their maximum levels with straw mulch gave the highest bulb yield (14.67 t ha-1).DOI: http://dx.doi.org/10.3329/pa.v21i1-2.16747 Progress. Agric. 21(1 & 2): 39 - 46, 2010
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