Growth of papaya cv. Callina seedlings on four types of planting media supplemented with different doses of AB-MIX nutrient solution (original) (raw)
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An experiment was conducted to standardize the suitable media and type of the container for improving seed germination and seedling growth of papaya (Carica papaya L.) cv. Red Lady during 2019-20. Five different types of media and three types of containers were used for study. Present experiment was conducted in a Complete Randomized Block Design (Factorial) with 15 treatment combinations replicated thrice. The observations were recorded on seed germination attributes and seedling growth parameters. The results showed that the plastic containers were found better followed by earthen pots and polybags using media mixture of soil + cocopeat + vermicompost (1:1:1) for improving seed germination (94.76%). However, the maximum plant height (17.40 cm), number of leaves (12.03), stem girth (6.42 mm), leaf area (131.02 cm 2), root length (18.60 cm) and seedling survival (97.30%) was observed in the earthen pots having rooting media mixture made up of garden soil + cocopeat + vermicompost + FYM (1:1:1:1). The seed germination and plant growth parameters, root length and seedling survival was recorded in polybags.
II International Symposium on Papaya, 2010
The experiment was carried out to study the effect of organic practices, mulching and plant growth regulators on growth, yield and quality of papaya cv. Taiwan Red Lady 786 under subtropical conditions of Punjab. In this experiment, farmyard manure, vermicompost and mulching along with different concentrations of GA 3, NAA and Ethrel were tested in randomized block design. Maximum plant height (145.33cm), stem diameter (37.66cm), number of leaves/plant (32.33), number of flowers (135.66/plant), number of fruits (40.66/plant), fruit set percentage (78.18%), fruit length (17.13cm), fruit breadth (12.23cm), specific gravity (0.92) and ascorbic acid percentage (83.77%) was recorded in GA 3 200ppm with FYM, vermicompost and black mulching, whereas maximum TSS (16.71 0 B) and minimum acidity percentage (0.129%) was recorded with application of Ethrel 200ppm with FYM, vermicompost and black mulching. The results of this experiment revealed that integration of PGR's application with farmyard manure, vermicompost and black mulch yield better results.
Impact of GA3 and Propagation Media on Growth Rate and Leaf Chlorophyll Content of Papaya Seedlings
An experiment was conducted to evaluate the effect of gibberellic acid and propagation media on relative growth rate, absolute growth rate and leaf chlorophyll content (A, B and total) in papaya seedlings. The study revealed that, seed priming with GA 3 200 significantly influenced relative growth rate and leaf chlorophyll content. Among propagation media, media composed of either vermicompost or farmyard manure (FYM) greatly enhanced growth rates and leaf chlorophyll content. Interaction of seed priming with GA 3 200 ppm and soil, sand, cocopeat and vermicompost (1:1:1:1) media significantly increased absolute growth rate, relative growth rate and leaf chlorophyll content of papaya seedling. apaya (Carica papaya Linn.) has long been known as a wonder fruit of the tropics and grown primarily for its delicious fruits and for extraction of its digestive constituent papain. Papaya gives highest production of fruits per hectare and an income next to banana. Since seed is costly input and that much in hybrid varieties, thus proper seedling growth are most important considerations in successful seedling production under nursery technique of papaya cultivation. Gibberellic acid synthesizes alpha amylase and other hydrolytic enzymes which effects membrane permeability and increases water uptake and helps to break the embryo dormancy subsequently improves early and healthy growth (Looney 1983). Generally, media for fruit crop seedlings are composed of soil, organic matter and sand. Soil is the basic medium because it is cheapest and easy to procure. Growing media not only acts as a growing place but also as a source of influences the quality of seedling (Wilson et al. 2001). Particularly too heavy soils prevailing in Vidarbha region are problematic, since soils are withour enough drainage, which leads to suppression in growth of root system and plant becomes more susceptible to soil borne diseases. There is better relationship between the manure and rooting rather than conventional soil mix and less susceptibility of the seedling to soil borne pests and diseases. Considering the requirement of early and healthy growth probable reduction in multiplication time and growth period of seedling there by standardize the seedling production by use of growth regulator and proper media which could be more economic, the present investigation was chalked out. MATERIALS AND METHODS The experiment was conducted at the Commercial Fruit Nursery, Department of Horticulture, Akola. The poly bags experiment was laid out in completely randomized design with factorial concept with three replications. The experiment comprised of twenty one treatment combinations Gibberellic acid (GA 3) with two concentrations i e GA 3 at 100ppm (G 1), 200ppm (G 2) and Control as water soaking of seeds (G 0) and different growth media used in different ratio i e Soil as control (M 0), Soil: FYM (1:1) (M 1), Soil: Cocopeat (1:1) (M 2), Soil: Sand: FYM (1:1:1) (M 3), Soil: Sand: Cocopeat (1:1:1) (M 4), Soil: Sand: Vermicompost (1:1:1) (M 5) and Soil: Sand: Cocopeat : Vermicompost (1:1:1:1) (M 6). The seeds of papaya cv. " Coorg honey dew " were obtained from CHRS, Chethali and sown in the prefilled poly bags. The required quantities of plant growth regulators were prepared through stock solution with their different concentrations. The seeds were soaked before sowing in the aqueous solution of every plant growth P 169
Journal of Applied Horticulture
The effect of three types of media and three levels of cocopeat were studied under agronet house conditions on germination and development of papaya seedling in a Complete Randomized Design with nine treatment combinations. The results showed that the medium of vermicompost + sand + pond soil (1 : 1 :1) with 2 cm cocopeat on the top (T 9) gave maximum speed of emergence (277.6 and 709.09), highest germination per cent (95.27 and 90.15), highest seed vigour (91.97 and 86.69), maximum germination index (7.15 and 7.22), germination value (17.33 and 33.83) and least time required for imbibtion (9.45 and 9.30 days) with minimum germination period (3.70 and 2.75 days), respectively in both years of experimentation. This medium was also found to be the best medium for the growth of papaya seedlings as it gave the highest parameters in terms of seedling height (23.43 cm and 22.67 cm), leaf area (349.33 cm 2 and 329.20 cm 2), number of leaves (10.02 and 9.67), stem girth (3.16 mm and 3.48 mm), number of roots (17.20 and 16.17), root length (10.20 cm and 9.67 cm), production of total biomass (5.02 g/plant and 4.77 g/plant) and least root/shoot ratio (0.22 and 0.20). This treatment also signifi cantly reduced the seedling mortality and produced maximum healthy seedlings (92.23 % and 93.15%) in minimum days (35.33 and 35.15) with highest net profi t (Rs. 3493.30/1000 seedling and Rs. 3448.00/ 1000 seedling) and B:C ratio (1.85 and 1.84) of seedlings, in both years (2008-09 and 2009-10), respectively.
Production of 'Formosa' Papaya Seedlings in Different Protected Environments and Organic Substrates
JOURNAL OF NEOTROPICAL AGRICULTURE, 2016
It is aimed to evaluate the effect of cattle manure, and ground crushed cassava branches based substrates in the growth of 'Formosa' papaya seedlings under different environmental conditions. Four protected environments were tested: greenhouse in arched, covered with polyethylene film with a thermo reflective screen underneath it; similar greenhouse but without the reflective screen; monofilament nursery with 50% shade screen and thermo reflective nursery with 50% shade screen. In the protected environments, seedlings were accomodated in polyethylene bags (15.0 x 25.0 cm) were filled with cattle manure, and ground cassava branches based substrates in the following proportions: 100% cassava branches; 80% cassava branches and 20% cattle manure; 60% cassava branches and 40% cattle manure; 40% cassava branches and 60% cattle manure; 20% cassava branches and 80% cattle manure and 100% cattle manure. Because there was no repetition of the culture environment, each one was consider...
2017
The present investigation to study the effect of organic and inorganic fertilizers on growth, yield and quality of papaya (Carica papaya L.) cv. Vinayak was carried out during January-December 2016 at Fruit Research Farm, Department of Fruit Science, College of Horticulture and Forestry, Central Agricultural University, Pasighat, Arunachal Pradesh. The experiment was laid out in Randomized Block Design with 13 treatments and 3 replications. The treatments were T1 ( 200 g N + 200 g P + 250 g K ),T2 (20 kg FYM), T3 (100 g N + 100 g P + 125 g K + 10 kg FYM), T4 (200 g N + 200 g P + 250 g K + Azotobacter 50 g + phosphate solubilizing bacteria 50 g + Azospirillum 50 g), T5 (20 kg FYM + Azotobacter 50 g + phosphate solubilizing bacteria 50 g + Azospirillum 50 g), T6 (100 g N + 100 g P + 125 g K + 10 kg FYM + Azotobacter 50 g + phosphate solubilizing bacteria 50 g + Azospirillum 50 g), T7 (200 g N + 200 g P + 250 g K + Azotobacter 50 g + phosphate solubilizing bacteria 50 g),T8 (200 g N + ...
2022
Continuous use of chemical fertilizers poses soil health issues, whereas organic manures alone are not able to fulfil the requirements of highly nutrient-demanding crops. Indian soils are deficient in NPS, leading to low yield potential, so the only option left is to concentrate on alternate strategies like Integrated Nutrient Management (INM) to maintain the soil fertility. In this view, research was carried out to study the effect of integrated nutrient management on plant growth, yield and quality of papaya (L.) cv. Red Lady under Carica papaya Punjab conditions. The main objectives of this study were to adopt organic manures instead of relying only on chemical fertilizers or to find the appropriate combination of organic manures along with chemical and bio-fertilizers. The dose of chemical fertilizers was kept constant (50% for all treatments), whereas different concentrations of organic manures and bio-fertilizers were added. Among all the treatments, the application of 50% NPK + 20 kg FYM + 100 g + 100 g PSB resulted in the maximum plant height, stem girth, fruit length, fruit width, Azospirillum and yield. Likewise, all the fruit quality parameters such as TSS, firmness, total sugars, reducing sugars, non-reducing sugars and ascorbic acid were also improved by the same treatment. Hence, integrated nutrient management significantly improved the vegetative growth, yield and quality of papaya cv. Red Lady when 20 kg of FYM and 100g of were applied along with 50% NPK.
Postharvest Seed Treatments to Improve the Papaya Seed Germination and Seedlings Development
Tropical and Subtropical Agroecosystems, 2013
Practical technologies are required to preserve the viability of seeds particularly those known to be short-term viable species like Carica papaya (papaya). Papaya seeds were imbibed in water or chemical solutions (CaCl 2 10 -5 M, salicylic acid 10 -4 M, and gibberellic acid 10 -5 M) combined with inoculation of bacterial cell suspension to determine their effects on seed germination, plant growth, biomass production and chlorophyll accumulation. Seeds imbibed in water germinated 40 % more than control seeds and the time required to reaching 50 % seed germination was reduced two days in comparison to untreated seeds; however, the untreated seeds generated the largest (9.2 cm) and most vigorous seedlings. When seeds were imbibed in CaSG solution, a significant increase of the growth parameters such as fresh and dry biomass weight was observed. Seeds that were primed in gibberellic acid solution followed by inoculation with a mixture of Azospirillum brasilense cell suspension exhibited high seed germination (69 %), plant emergence (47 %) and seedling height (19 %), higher than the control. Differences in chlorophyll accumulation by seedlings were minimal.