Abstract
SummaryTrials over two years aimed to characterize the physico-chemical properties and high-temperature responses of ecologically sound untreated organic substrates coconut (Cocos nucifera L.) coir and carbonated rice husk in relation to that of rockwool using tomatoes (Lycopersicon esculentum Mill.) as a test crop. In all substrates, water-filled pore space and water holding capacities were larger and air filled pore space was smaller. Bulk densities, water holding capacity and water-filled, air-filled and total pore spaces were lower in carbonated rice husk than coconut coir and rock wool. These values in coconut coir and carbonated rice husk were much increased with use. Most of the chemical properties, namely cation exchange capacity, electrical conductivity, pH, nitrate-N, P, K, Ca and Mg of these substrates were within recommended levels as growing media. There were no significant differences in plant height, stem diameter, individual fruit weight, percent fruit set, harvest index, ascorbic acid, total soluble solid, fruit pH, leaf chlorophyll contents, root dry matter percentage, fruit dry matter percentage and shoot/root ratio. There was less fluctuation in absolute growth rate, relative growth rate, net assimilate rate and leaf area ratio among the treatments. It also appeared that carbonated rice husk and coconut coir gave better crop performance and yield of tomatoes than rock wool under high temperature stress conditions namely 30°C and 35°C as compared with 25°C. Furthermore, crop productivity from the organic substrate coconut coir gave more profit than the popular rock wool. Thus, carbonated rice husk and coconut coir can be used successfully as a growing media amendment for producing fruit vegetables. .
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Claims 6
Claim · model-written summary
Plant growth, fruit, leaf and root traits did not significantly differ among substrates.
- Taxon
- tomatoes
Solanum lycopersicume1 - Outcome
- plant height, stem diameter, individual fruit weighte0
- Direction
- noe0
- Qualifier
- percent fruit set, harvest indexe0
Not reportedTreatmentComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“There were no significant differences in plant height, stem diameter, individual fruit weight, percent fruit set, harvest index, ascorbic acid, total soluble solid, fruit pH, leaf chlorophyll contents, root dry matter percentage, fruit dry matter percentage and shoot/root ratio.”
e1“tomatoes (Lycopersicon esculentum Mill.)”
Claim · model-written summary
Growth rate and leaf area ratio fluctuated less among substrate treatments.
- Taxon
- tomatoesSolanum lycopersicume1
- Outcome
- absolute growth rate, relative growth rate, net assimilate rate and leaf area ratioe0
- Direction
- lesse0
- Qualifier
- among the treatmentse0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“There was less fluctuation in absolute growth rate, relative growth rate, net assimilate rate and leaf area ratio among the treatments.”
e1“tomatoes (Lycopersicon esculentum Mill.)”
Claim · model-written summary
Carbonated rice husk gave better tomato performance and yield than rock wool at high temperature.
- Taxon
- tomatoesSolanum lycopersicume0
- Treatment
- carbonated rice huske0
- Outcome
- crop performance and yielde0
- Direction
- bettere0
- Qualifier
- 30°C and 35°C as compared with 25°Ce0
- Comparator
- rock woole0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“carbonated rice husk and coconut coir gave better crop performance and yield of tomatoes than rock wool under high temperature stress conditions namely 30°C and 35°C as compared with 25°C.”
Claim · model-written summary
Coconut coir gave better tomato performance and yield than rock wool at high temperature.
- Taxon
- tomatoesSolanum lycopersicume0
- Treatment
- coconut coire0
- Outcome
- crop performance and yielde0
- Direction
- bettere0
- Qualifier
- 30°C and 35°C as compared with 25°Ce0
- Comparator
- rock woole0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“carbonated rice husk and coconut coir gave better crop performance and yield of tomatoes than rock wool under high temperature stress conditions namely 30°C and 35°C as compared with 25°C.”
Claim · model-written summary
Coconut coir produced more profit than rock wool.
- Taxon
- tomatoesSolanum lycopersicume1
- Treatment
- coconut coire0
- Outcome
- profite0
- Direction
- moree0
- Comparator
- rock woole0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“crop productivity from the organic substrate coconut coir gave more profit than the popular rock wool.”
e1“tomatoes (Lycopersicon esculentum Mill.)”
Claim · model-written summary
Authors recommend carbonated rice husk and coconut coir as growing media amendments.
Verbatim
e0“carbonated rice husk and coconut coir can be used successfully as a growing media amendment for producing fruit vegetables.”
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