EFFECT OF N, P, K AND SPACING ON GROWTH AND YIELD OF PAPAYA (CARICA PAPAYA L.) CV. PANT PAPAYA 1

Abstract Background Rice (Oryza sativa L.) is a common staple food in Nigeria. However, cultivation is impaired by heavy metal contamination, particularly iron (Fe). This study aimed to investigate the impacts of biosynthesized nanoparticles (NPs) in enhancing the growth and yield components of rice sown in ferruginous soil. Viable seeds of O. sativa var. nerica were sown in ferruginous and non-ferruginous soils. After four weeks, the plants were exposed to foliar sprays of biosynthesized NPs from silver nitrate, using extracts of leaves of Carica papaya, Vernonia amygdalina, Moringa oleifera, and Azadirachta indica; and the flowers of Hibiscus sabderiffa, following standard procedure. The originally prepared stock solution was diluted to give 5, 15, and 30% concentrations of each synthesized NP. Results Results showed that soil ferrugenicity impeded the growth and yield of rice. Azadirachta-synthesized NPs was better enhanced in the ferruginous soils, which might be due to Fe interaction and activities. Moreover, there was increased antioxidant activity in the ferruginous rice compared to the non-ferruginous rice, thus it is evidence that ferrugenicity is a major source of physiological stress for the rice plant. Conclusion The study provided evidence that Ag-NPs can enhance plant yield by huge proportions in ferruginous soil, a condition (ferrugenicity) that was hitherto inimical to yield disposition of rice.

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Effect of Nitrogen and Boron Application on Carica papaya L. I. Growth and Yield

The Journal of Agriculture of the University of Puerto Rico ◽

10.46429/jaupr.v67i3.7711 ◽

1969 ◽

Vol 67 (3) ◽

pp. 181-187

Author(s):

Agripino Pérez-López ◽

Rubén D. Reyes-Jurado

Keyword(s):

Plant Height ◽

Carica Papaya ◽

Marked Effect ◽

Fertilization Rate ◽

Stem Diameter ◽

Growth And Yield ◽

Stem Height ◽

Four Levels

The experiment was carried on a Coto clay (an Oxisol). The effect of four levels of N (0, 57, 170 and 340 kg/ha) and four levels of B (0, 2.3, 4.5, 6.8 kg/ha) were determined using the P.R. 7-65 papaya variety. Treatments were initiated when the transplanted seedlings were three months old, and were repeated every six weeks. The information recorded showed the following results: Increments of N and B levels did not show a marked effect on plant height and stem diameter. Boron tended to be more effective than N in increasing stem height and diameter. The petiole fresh and dry weights increased linearly as the N and B levels were raised. The number and weight of fruits borne on female and hermaphroditic trees increased linearly as the N and 8 levels were raised. The results of the experiment showed that the papaya plant requires a high N and B fertilization rate.

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Environmental Factors Controlling Carbon Assimilation, Growth, and Yield of Papaya ( Carica papaya L.) Under Water-Scarcity Scenarios

Water Scarcity and Sustainable Agriculture in Semiarid Environment ◽

10.1016/b978-0-12-813164-0.00019-3 ◽

2018 ◽

pp. 481-505 ◽

Cited By ~ 2

Author(s):

Eliemar Campostrini ◽

Bruce Schaffer ◽

José D.C. Ramalho ◽

Julián C. González ◽

Weverton P. Rodrigues ◽

...

Keyword(s):

Environmental Factors ◽

Water Scarcity ◽

Carica Papaya ◽

Carbon Assimilation ◽

Growth And Yield

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Growth and yield of 3 hybrid papayas (Carica papaya L.) under mulched and bare ground conditions

Australian Journal of Experimental Agriculture ◽

10.1071/ea99107 ◽

2000 ◽

Vol 40 (5) ◽

pp. 747 ◽

Cited By ~ 5

Author(s):

R. J. Elder ◽

W. N. B. Macleod ◽

D. J. Reid ◽

R. L. Gillespie

Keyword(s):

Carica Papaya ◽

Fruit Set ◽

Fruit Weight ◽

The Other ◽

Growth And Yield ◽

Stem Height ◽

Bare Ground ◽

Fruit Setting ◽

Ground Conditions ◽

Intermediate Time

At Yarwun (151.3˚E, 23.75˚S), Australia, papaya Hybrid 29 yielded twice as much fruit as Hybrid 11 and 30% more than Hybrid 13. The plots mulched with coarse grass hay yielded 50% more fruit than the plots with bare ground. The highest yielding treatment, Hybrid 29 + mulch, averaged the equivalent of 81 t/ha.year over the 16.5-month harvest period. The yields were achieved in spite of inadequate water supply due to drought and the loss of 877 plants from 1441 plant positions (4 plants per position) due to the 3 phytoplasma diseases; dieback, yellow crinkle and mosaic. Hybrid 29 produced higher yields than the other hybrids by flowering early on shorter plants with thicker stems and setting more fruit that commenced lower down on the stem. Hybrid 13 was intermediate in size and the amount of fruit setting between Hybrid 29 and Hybrid 11 but was the slowest to flower and set fruit. Hybrid 11 had the thinnest and tallest stems, flowered at an intermediate time between the other 2 hybrids and produced fewer flowers and fruit resulting in the lowest yield. Mulching increased stem height and thickness, promoted earlier flowering and increased fruit set, yield and average fruit weight

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Effect of Plant Population and Fertilization on Growth and Yield of Papaya (Carica papaya L.)

The Journal of Agriculture of the University of Puerto Rico ◽

10.46429/jaupr.v61i2.10452 ◽

1969 ◽

Vol 61 (2) ◽

pp. 152-159

Author(s):

Guillermo Colom-Covas

Keyword(s):

Plant Height ◽

Algebraic Equation ◽

West Indies ◽

Carica Papaya ◽

Fertilization Rate ◽

Plant Population ◽

Fruit Yield ◽

Growth And Yield ◽

Petiole Length ◽

Planting Distance

A planting distance experiment with the Sunrise Solo papaya cultivar was performed in St. Augustine, Trinidad. West Indies, in which the distance between plants was varied from 0.602 to 3.046 m. Each plant received a total of 340.2 g of 13-13-20 fertilizer in six bimonthly applications. Plant height, stem diameter, and fruit yields during a 5-month harvesting period attained maximum values of 309 cm. 30 cm. and 328.86 ql4/ha, respectively, at planting distances of 0.715, 2.206, and 0.987 m. Petiole length did not vary significantly with variation in planting distance. Fruit yield during the 5-month harvest period (August to December 1969) increased from 58.38 ql/ha with a planting distance of 0.602 m and 93.89 ql/ha of 13-13-20 application to 328.86 ql/ha with a planting distance of 0.987 m and 34.87 ql/ha fertilization, decreasing to about 70 ql/ha as planting distance increased to 3.046 m and fertilization rate decreased to 3.66 ql/ha. A quartic algebraic equation fitted to the data explained 51% of the variation of fruit yield as a dependent variable on planting distance.

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