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20191
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Subject: Fruit Science × Author: Parminder Singh × End date: 2021 ×
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    ThesisItemOpen Access
    Effect of different mulches on weed management and growth parameters of guava nursery plants
    (Punjab Agricultural University, Ludhiana, 2019) Parminder Singh; Kang, Kirandeep Kaur
    The present investigation to study the effect of different combinations of organic (paddy straw mulch and coco mulch mats) and inorganic mulches (biodegradable polythene mulch, black and silver polythene mulch and black and green polypropylene woven mats) on the weed control efficacy, health and productivity of nursery plants was conducted during the year 2018-19. The studies clearly revealed that black and green polypropylene woven mats in combination with paddy straw mulch were very effective in suppressing the weed growth as the weeds did not appeared even after 240 days of application. Weed biomass of 0.6 g/m2 was recorded in black polypropylene woven mats in combination with paddy straw mulch after 300 days as compared to 42.5 g/m2 in control.The biodegradable mulch started degrading after 120 days of application and recorded a weed biomass of 5.3g/m2 at this stage. The chemical, nutritional and soil microbial properties improved with the application of organic mulches. Black polypropylene woven mats resulted in 2-3 per cent higher soil temperature during winters and maintained 1.5-2 percent higher moisture content during the month of May-June. Among the plant growth parameters, maximum plant height (47.51 cm) was recorded under green polypropylene woven mats and stem diameter (1.47 cm) was recorded under black polypropylene woven mats as compared to other mulching treatments. The plots mulched with black polypropylene woven mats resulted in highest B: C ratio (0.95) closely followed by green polypropylene woven mats in combination with paddy straw mulch (0.91) while the lowest B: C ratio was observed under the control plots. From the study, it was concluded that, the polypropylene woven weed mats can be applied in the guava nursery plots to control the weed growth effectively as well as to enhance the percentage of buddable seedlings.