Abstract
A study was conducted during 2017-18 under the All India Co-ordinated Research Project initiated in 2009 at research farm of Bihar Agricultural University, Sabour, Bhagalpur. The aim of this study was compare the nutrient concentration of coconut leaves at different nutrient levels through drip fertigation in a Randomized Block Design (RBD) with four (4) replications. Result was observed that leaf Nitrogen, Phosphorous, Sulphur, Iron, Manganese, Copper and Boron content under different fertigation treatments were not significantly different from each other. The content of micronutrients in leaf were found to increase with increasing levels of fertilizer in the treatments. Cation Exchange Capacity was positively correlated with all the leaf nutrients. Organic carbon did not show remarkable relation with plant nutrient parameters. Soil K content of all three depths was positively correlated with all the leaf nutrient elements. Soil pH value was positively correlated with leaf P content in coconut which explains that leaf P content is directly proportional to the soil pH value. Electrical conductivity (EC) of soil was also positively correlated with P, K and B concentration in coconut leaf. Correlation coefficient value between CEC and leaf nutrient contents explains that 2nd depth of soil is more important for mineral nutrition of coconut palm. Correlation coefficient values between soil P content and leaf nutrient content. Higher correlation coefficient value was found at lower soil depth between available sulphur content in soil and sulphur content in leaf of coconut. This result suggests that inherent supplying capacity of micronutrient of experimental soil is not so influential for higher plant growth, but application of N, P and K fertilizers trigger the absorption capacity for micronutrient from soil. Under different NPK levels, the applied NPK does not have significant effect on leaf N, P, S, Zn content after five (5) years of experimentation while the effect was found to be significant for few elements like K, Fe, Mn, Cu, and B. An increasing trend was observed for leaf nutrient content with increasing levels of fertilizer application.
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Claims 12
Claim · model-written summary
Leaf N, P, S, Fe, Mn, Cu and B did not differ significantly among fertigation treatments.
- Taxon
- Cocos nucifera L
Cocos nuciferat0 - Treatment
- different fertigation treatmentse0
- Outcome
- leaf Nitrogen, Phosphorous, Sulphur, Iron, Manganese, Copper and Boron contente0
- Direction
- not significantly differente0
- Comparator
- each othere0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“leaf Nitrogen, Phosphorous, Sulphur, Iron, Manganese, Copper and Boron content under different fertigation treatments were not significantly different from each other”
t0“Coconut (Cocos nucifera L)”
Claim · model-written summary
Leaf micronutrient content increased with fertilizer level.
- Taxon
- Cocos nucifera LCocos nuciferat0
- Treatment
- increasing levels of fertilizere0
- Outcome
- content of micronutrients in leafe0
- Direction
- increasee0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The content of micronutrients in leaf were found to increase with increasing levels of fertilizer in the treatments”
t0“Coconut (Cocos nucifera L)”
Claim · model-written summary
Soil cation exchange capacity correlated positively with all coconut leaf nutrients.
- Taxon
- Cocos nucifera LCocos nuciferat0
- Outcome
- all the leaf nutrientse0
- Direction
- positively correlatede0
- Qualifier
- Cation Exchange Capacitye0
Not reportedSetting
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Cation Exchange Capacity was positively correlated with all the leaf nutrients”
t0“Coconut (Cocos nucifera L)”
Claim · model-written summary
Soil organic carbon showed no remarkable relation to plant nutrient parameters.
- Taxon
- Cocos nucifera LCocos nuciferat0
- Compound
- Organic carbone0
- Outcome
- plant nutrient parameterse0
- Direction
- did not show remarkable relatione0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Organic carbon did not show remarkable relation with plant nutrient parameters”
t0“Coconut (Cocos nucifera L)”
Claim · model-written summary
Soil K content at all three depths correlated positively with coconut leaf nutrients.
- Taxon
- Cocos nucifera LCocos nuciferat0
- Compound
- Soil Ke0
- Outcome
- all the leaf nutrient elementse0
- Direction
- positively correlatede0
- Qualifier
- all three depthse0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Soil K content of all three depths was positively correlated with all the leaf nutrient elements”
t0“Coconut (Cocos nucifera L)”
Claim · model-written summary
Soil pH correlated positively with coconut leaf P.
Not reportedSetting
Verbatim
e0“Soil pH value was positively correlated with leaf P content in coconut”
Claim · model-written summary
Soil electrical conductivity correlated positively with coconut leaf P, K and B.
- Taxon
- coconute0
- Outcome
- P, K and B concentration in coconut leafe0
- Direction
- positively correlatede0
- Qualifier
- Electrical conductivity (EC) of soile0
Not reportedSetting
Verbatim
e0“Electrical conductivity (EC) of soil was also positively correlated with P, K and B concentration in coconut leaf”
Claim · model-written summary
The second soil depth was identified as more important for coconut mineral nutrition by CEC correlations.
- Taxon
- coconut palmCocos nuciferae0
- Outcome
- mineral nutritione0
- Direction
- more importante0
- Qualifier
- 2nd depth of soile0
Not reportedSetting
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Correlation coefficient value between CEC and leaf nutrient contents explains that 2nd depth of soil is more important for mineral nutrition of coconut palm”
Claim · model-written summary
Soil available sulfur and coconut leaf sulfur had a higher correlation at lower soil depth.
Verbatim
e0“Higher correlation coefficient value was found at lower soil depth between available sulphur content in soil and sulphur content in leaf of coconut”
Claim · model-written summary
Applied NPK had no significant effect on coconut leaf N, P, S and Zn after five years.
- Taxon
- Cocos nucifera LCocos nuciferat0
- Treatment
- applied NPKe0
- Outcome
- leaf N, P, S, Zn contente0
- Direction
- does not have significant effecte0
- Qualifier
- after five (5) years of experimentatione0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Under different NPK levels, the applied NPK does not have significant effect on leaf N, P, S, Zn content after five (5) years of experimentation”
t0“Coconut (Cocos nucifera L)”
Claim · model-written summary
Applied NPK significantly affected coconut leaf K, Fe, Mn, Cu and B after five years.
- Taxon
- Cocos nucifera LCocos nuciferat0
- Treatment
- applied NPKe0
- Outcome
- K, Fe, Mn, Cu, and Be0
Not reportedComparatorDirection
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Under different NPK levels, the applied NPK does not have significant effect on leaf N, P, S, Zn content after five (5) years of experimentation while the effect was found to be significant for few elements like K, Fe, Mn, Cu, and B”
t0“Coconut (Cocos nucifera L)”
Claim · model-written summary
Leaf nutrient content tended to increase with fertilizer application level.
- Taxon
- Cocos nucifera LCocos nuciferat0
- Treatment
- increasing levels of fertilizer applicatione0
- Outcome
- leaf nutrient contente0
- Direction
- increasing trende0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“An increasing trend was observed for leaf nutrient content with increasing levels of fertilizer application”
t0“Coconut (Cocos nucifera L)”
The same questions in other papers
fertilization · nutrient: content · Cocos nucifera (coconut palm)Positive and negative results
3 in the opposite direction
- positive
- positive
- positive
Claims are grouped by organism, treatment and what was measured or targeted. A paper counts as positive when any of its claims in the group is positive.