Effects of cowdung and potassium on growth and yield of Kohlrabi

Abstract

An experiment was carried out at the Horticulture Farm of the Bangladesh Agricultural University, Mymensingh during the period from November 2010 to January 2011 to study the effects of cowdung and potassium on growth and yield of Kohlrabi. The experiment consisted of three levels of cowdung (0, 20 and 40 t/ha) and four levels of potassium (0, 20, 50, 80 kg /ha). The experiment was laid out in randomized complete block design with three replications. All the parameters were significantly influenced by application of cowdung and potassium. The highest plant height (44.65 cm), number of leaves per plant (12.11), length of largest leaf (37.54 cm), and breadth of largest leaf (18.66 cm) were obtained from the highest dose of cowdung and potassium applied (40 t cowdung + 80 kg K/ha) while the lowest plant height (33.64 cm), number of leaves (9.01), length of largest leaf (27.94 cm), and breadth of largest leaf (11.00 cm) were obtained from control treatment combination. The highest fresh weight of leaves (49.33 g), fresh weight of knob (328.66 g) and fresh weight of roots (66.55 g) per plant were also recorded under the treatment combination of 40 t cowdung + 80 kg K/ha, while the lowest fresh weight of leaves (22.11 g), fresh weight of knob (136.00 g) and fresh weight of roots (23.33 g) were obtained from control treatment combination. Similarly, the dry weight of leaves (19.34%), knob (15.19%) and roots (32.75%) were highest under the same treatment combination of 40 t cowdung + 80 kg K/ha and the lowest dry weight of leaves (11.71%), dry weight of knob (7.38%) and dry weight of roots (15.29%) were obtained from control treatment combination C 0 K 0 . The marketable yields of knob per plot (7.86 kg) and per hectare (39.58 tons) were also the highest under the treatment combination 40 t cowdung/ha and 80 kg potassium per hectare.

Effect of Organic, Inorganic Fertilizers and Plant Spacing on the Growth and Yield of Cabbage

“…The results indicated that application of organic fertilizers and inorganic fertilizers combined showed improved growth and the maximum plant spread. These findings are in agreement with the reports where vermicompost or poultry manure along with inorganic fertilizer application yielded high plant spread [27][28][29]. Level of significance ** ** ** ** NS ** ** ** S 1 = 60 cm × 40 cm; T 1 = Vermicompost; S 2 = 60 cm × 50 cm; T 2 = Biogen; S 3 = 60 cm × 60 cm; T 3 = IPNS ( 2 /3 organic + 1 /3 inorganic) and T 4 = Inorganic; ** = Significant at 1% level of probability.…”

“…Results showed that the wider spacing was superior in yield attributes. Similar findings in the plant height of cabbage were obtained by various researchers [25,26] and IPNS or the application of mixed fertilizers influenced the plant height [27,28]. The wider spacing did not produce highest yield as number of plants reduced by the unit area.…”

“…The highest number of roots (16.20/plant) was produced from the S 2 T 3 treatment (60 cm × 50 cm) × ( 2 /3 organic + 1 /3 inorganic), while the lowest number of roots was found in the S 1 T 4 treatment (12.53/plant) ( Table 2). Rai et al [27] reported similar findings that when vermicompost was applied in the soil with NPK (nitrogen-phosphorous-potassium), some metallic trace elements stimulated the growth of roots [28]. A higher number of roots indicate improved growth in the combined treatment and higher yield.…”

Effect of organic and chemical sources of nitrogen and seedling age at transplant on growth and yield of Kohlrabi

“…gongylodes), a member of the cole crops, which belongs to the family Cruciferae is of north-European origin. 1 It is also known as Knolkhol German turnip, cabbage turnip, Navalkol, GunthGobhi, and Ganthgobhi 2 and Olkapi. 1 The bulb like swollen edible portion is stem known as knob, which arises from thickening of stem tissues above the cotyledon.…”

“…1 It is also known as Knolkhol German turnip, cabbage turnip, Navalkol, GunthGobhi, and Ganthgobhi 2 and Olkapi. 1 The bulb like swollen edible portion is stem known as knob, which arises from thickening of stem tissues above the cotyledon. 2 This knob is harvested for human consumption as raw or cooked vegetable.…”