Residual Effect of Organic and Inorganic Inputs on Growth and Yield of Gladiolus under Marigold- Gladiolus Cropping System
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Date
2023-02-06
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College of Horticulture and Forestry, Central Agricultural University, Pasighat -791102 Central Agricultural University (Imphal)
Abstract
Significant responses of residual nutrients on flowering characters of gladiolus were observed. Treatment combinations of T12 was showed earliness in spike initiation (59.40 days). However, enhanced rachis length (55.28 cm) and spike length (92.98 cm) were noticed in treatment combinations of T12 followed by treatment T3, [48.75 cm and 82.20 cm]. Maximum number of florets/spike (17.07) were obtained with T12 followed by T11, whereas, enhanced spike yield (49,390 spikes/ha) was obtained from treatment combinations of T12 followed by T3, [32,696 spikes]. Significant corms characteristics viz. maximum number of corms/plant (2.80), polar diameter of corms (3.37cm) were associated with T12 followed by T6 (222 kg/ha), [2.07, 2.64 cm]. Maximum equatorial diameter of corms (5.48 cm) were obtained with T12 followed by T4 [4.82 cm]. Moreover, the enhanced number of contractile roots (9.30) were obtained with the T12 followed by T11 (222 kg/ha) [7.67]. Nevertheless, T7 (222 kg/ha) produced the maximum number of filiform roots (20.67).
Residual effect of organic and inorganic inputs significantly influenced the nutrient uptake in leaves, flowers, spikes and roots. The treatment combination T12 enhanced nitrogen uptake in leaves, flowers, spikes , roots (3.45 kg/ha, 2.11kg/ha, 5.40 kg/ha, 0.44 kg/ha), phosphorus uptake in leaves, flowers, spikes, roots (1.16kg/ha, 0.67kg/ha, 2.62 kg/ha, 0.09 kg/ha) and potassium uptake in leaves, flowers , spikes, roots (2.22 kg/ha, 1.10 kg/ha, 4.66 kg/ha, 0.29 kg/ha). In contrast, increased nitrogen, phosphorus, potassium use efficiency (19.45 kg/kg, 106.57 kg/kg, 66.61 kg/kg), nitrogen, phosphorus, potassium uptake efficiency (0.030 kg/kg, 0.076 kg/kg, 0.089 kg/kg), apparent nitrogen, phosphorus, potassium recovery (2.64%, 6.25%, 5.98%) was recorded to be highest in the treatment vermicompost (5t/ha).
Thus, it is apparent from entire investigation that residual nutrients significantly performed on growth, flowering, yield, corm as well nutrient characters in gladiolus under marigold-gladiolus cropping system without compromising quality and yield.
Description
The present investigation was carried out on “Residual Effect of Organic and Inorganic Inputs on Growth and Yield of Gladiolus under Marigold – Gladiolus Cropping system “ at instructional farm, Department of Floriculture and Landscape Architecture, College of Horticulture and Forestry, Pasighat, Arunachal Pradesh during the year 2021 and 2022. A field experiment was laid out in Randomized Block Design (RBD) with 13 treatments in three replications. Marigold seedlings cv. Pusa Narangi Gainda were transplanted in the respective treatment plots as summer crop to evaluate the performance of organic and inorganic inputs on vegetative, flowering and yield attributes in marigold. Significant response of organic and inorganic inputs were noticed on vegetative, floral and yield characters of the marigold and the treatment combinations of T12 were found to be promising. Subsequently, marigold flowers were harvested at regular intervals, afterwards, gladiolus corms cv. Pusa Kiran were planted on the same plot as winter crop without disturbing the nutrient status of the treatment combinations to find out the residual effect on the growth, flowering, yield, root characters as well as nutrient uptake, efficiency and apparent nutrient recovery. Residual nutrients influenced significantly the gladiolus attributes, nutrient uptake as well as its use efficiency. The maximum plant height (60.40 cm) was noticed in treatment combinations of T12 followed by(RDF @ 120:80:60 NPK kg/ha), while, increased length of leaves (42.50 cm), breadth of leaves (4.14 cm) and leaf area (1.19 m2) was associated with treatment combinations of T12 followed by T11.