Abstract
Guava cultivation in subtropical region of India is mainly confined to marginal lands under rainfed conditions resul ting in low productivity and poor fruit quality. Restoration of the soil quality of such guava orchards with low soil fertility i s one of the important aspects for enhancing orchard productivity and sustainability as millions of farmers are engaged in guava production for their livelihood and nutritional security. Keeping this in view, effects of organic and inorganic substrates on soil characteristic and guava orchard productivity were studied through field experimentations during 200712. Different combinations of organic (FYM, vermicompost, mulching, Azotobacter, PSM and Trichoderma harzianum) and inorganic (N, P, K) substrates were applied each year within the tree basin under subtropical environmental condition. At the end of the study, soils fertilize d with vermicompost, biofertilizers and organic mulching showed improvement in yield as compared to NPK+ FYM application. Higher soil moisture retention, soil fertility and organic carbon build up and better soil temperature regulation was observed under mulching treatment. Microbial population and dehydrogenase activity were significantly higher in plots treated with vermicompost, microbial inoculants and mulching as compared to NPK+FYM application. The highest pooled data of dehydrogenase activity (3.1µgTPFg -1 h -1 ) was recorded in the treatment receiving 10 kg vermicompost which was superior over application of 5 kg FYM + 5 kg vermicompost or 10 kg FYM. The correlation studies revealed positive and significant relationship among the soil factors and yield. Highest correlation was observed between yield and microbial populations (r = 0.93 * to 0.97 ** ). Dehydrogenase activity was also positively correlated with the soil organic carbon content (r = 0.99 ** ), soil moisture (r = 0.99 ** ), soil temperature (r = 0.95 * ) and soil nutrients (r = 0.91 * to 0.97 ** ).
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Claims 6
Claim · model-written summary
Vermicompost, biofertilizers and mulch improved guava yield relative to NPK and farmyard manure.
- Taxon
- Guava
Psidium guajavat0 - Treatment
- vermicompost, biofertilizers and organic mulchinge0
- Outcome
- yielde0
- Direction
- improvemente0
- Comparator
- NPK+ FYM applicatione0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“soils fertilize d with vermicompost, biofertilizers and organic mulching showed improvement in yield as compared to NPK+ FYM application”
t0“GUAVA”
Claim · model-written summary
Mulching increased soil moisture retention, fertility and organic carbon and improved temperature regulation.
- Taxon
- GuavaPsidium guajavat0
- Treatment
- mulching treatmente0
- Outcome
- soil moisture retention, soil fertility and organic carbon build upe0
- Direction
- Highere0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Higher soil moisture retention, soil fertility and organic carbon build up and better soil temperature regulation was observed under mulching treatment”
t0“GUAVA”
Claim · model-written summary
Vermicompost, inoculants and mulch raised microbial populations and dehydrogenase activity compared with NPK and manure.
- Taxon
- GuavaPsidium guajavat0
- Treatment
- vermicompost, microbial inoculants and mulchinge0
- Outcome
- Microbial population and dehydrogenase activitye0
- Direction
- highere0
- Comparator
- NPK+FYM applicatione0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Microbial population and dehydrogenase activity were significantly higher in plots treated with vermicompost, microbial inoculants and mulching as compared to NPK+FYM application”
t0“GUAVA”
Claim · model-written summary
Ten kilograms vermicompost gave the highest dehydrogenase activity of 3.1 µg TPF per gram per hour.
- Taxon
- GuavaPsidium guajavat0
- Treatment
- 10 kg vermicomposte0
- Outcome
- dehydrogenase activitye0
- Direction
- higheste0
- Value
- 3.1µgTPFg -1 h -1e0
- Comparator
- 5 kg FYM + 5 kg vermicompost or 10 kg FYMe0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The highest pooled data of dehydrogenase activity (3.1µgTPFg -1 h -1 ) was recorded in the treatment receiving 10 kg vermicompost which was superior over application of 5 kg FYM + 5 kg vermicompost or 10 kg FYM”
t0“GUAVA”
Claim · model-written summary
Soil microbial populations were positively associated with guava yield.
- Taxon
- GuavaPsidium guajavat0
- Outcome
- yielde0
- Direction
- Highest correlatione0
- Value
- r = 0.93 * to 0.97 **e0
- Comparator
- microbial populationse0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Highest correlation was observed between yield and microbial populations (r = 0.93 * to 0.97 ** )”
t0“GUAVA”
Claim · model-written summary
Dehydrogenase activity was positively associated with soil organic carbon, moisture, temperature and nutrients.
- Taxon
- GuavaPsidium guajavat0
- Outcome
- Dehydrogenase activitye0
- Direction
- positively correlatede0
- Comparator
- soil organic carbon contente0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Dehydrogenase activity was also positively correlated with the soil organic carbon content (r = 0.99 ** ), soil moisture (r = 0.99 ** ), soil temperature (r = 0.95 * ) and soil nutrients (r = 0.91 * to 0.97 ** )”
t0“GUAVA”
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