Abstract
A field experiment was conducted to study the effect of potassium and zinc fertilizer on status and content of potassium and zinc fractions and their effect on crop yield, nutrient uptake and nutrient availability in the soil. Significant increase in grain yield, straw yield, K uptake, and different K fractions in the soil (exchangeable K, water soluble K, Morgan’s extractable K, lattice K and total K in the soil) were recorded with increase in K levels from 0 to 60 kg K/ha. Zinc fertilization in wheat also significantly increased crop yield and Zn uptake but interaction between K and Zn was not found to be significant in respect of yield, uptake, and various K and Zn fractions. Water-soluble K showed significant and positive correlation with exchangeable K (r= 0.928), Morgan’s extractable K (r= 0.983) and lattice K (r= 0.969), indicating rapid equilibrium establishment between these forms. Step wise regression analysis using different pools of K revealed the importance of water soluble K and lattice K influencing crop yield, K uptake by wheat. Similarly, application of 9 kg Zn/ha increased the Zn fractions present in soil and correlation data indicated that these fractions are in a state of dynamic equilibrium with each other. In the present study, DTPA-Zn accounted for 65% and 70% of the variation in grain yield and Zn uptake by wheat, indicating that DTPA-Zn was efficient in providing Zn nutrition to wheat.
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Claims 16
Claim · model-written summary
Increasing K from 0 to 60 kg K/ha significantly increased grain yield.
- Taxon
- wheat
Triticum aestivumt0 - Treatment
- increase in K levels from 0 to 60 kg K/hae0
- Outcome
- grain yielde0
- Direction
- increasee0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Significant increase in grain yield, straw yield, K uptake, and different K fractions in the soil (exchangeable K, water soluble K, Morgan’s extractable K, lattice K and total K in the soil) were recorded with increase in K levels from 0 to 60 kg K/ha.”
t0“Zinc fertilization in wheat”
Claim · model-written summary
Increasing K significantly increased straw yield.
- Taxon
- wheatTriticum aestivumt0
- Treatment
- increase in K levels from 0 to 60 kg K/hae0
- Outcome
- straw yielde0
- Direction
- increasee0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Significant increase in grain yield, straw yield, K uptake, and different K fractions in the soil (exchangeable K, water soluble K, Morgan’s extractable K, lattice K and total K in the soil) were recorded with increase in K levels from 0 to 60 kg K/ha.”
t0“Zinc fertilization in wheat”
Claim · model-written summary
Increasing K significantly increased wheat K uptake.
- Taxon
- wheatTriticum aestivumt0
- Treatment
- increase in K levels from 0 to 60 kg K/hae0
- Outcome
- K uptakee0
- Direction
- increasee0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Significant increase in grain yield, straw yield, K uptake, and different K fractions in the soil (exchangeable K, water soluble K, Morgan’s extractable K, lattice K and total K in the soil) were recorded with increase in K levels from 0 to 60 kg K/ha.”
t0“Zinc fertilization in wheat”
Claim · model-written summary
Increasing K significantly increased exchangeable, water soluble, Morgan’s extractable, lattice and total soil K.
- Taxon
- wheatTriticum aestivumt0
- Treatment
- increase in K levels from 0 to 60 kg K/hae0
- Outcome
- different K fractions in the soile0
- Direction
- increasee0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“different K fractions in the soil (exchangeable K, water soluble K, Morgan’s extractable K, lattice K and total K in the soil) were recorded with increase in K levels from 0 to 60 kg K/ha.”
t0“Zinc fertilization in wheat”
Claim · model-written summary
Zinc fertilization significantly increased wheat yield.
- Taxon
- wheatTriticum aestivume0
- Treatment
- Zinc fertilizatione0
- Outcome
- crop yielde0
- Direction
- increasede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Zinc fertilization in wheat also significantly increased crop yield and Zn uptake”
Claim · model-written summary
Zinc fertilization significantly increased wheat Zn uptake.
- Taxon
- wheatTriticum aestivume0
- Treatment
- Zinc fertilizatione0
- Outcome
- Zn uptakee0
- Direction
- increasede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Zinc fertilization in wheat also significantly increased crop yield and Zn uptake”
Claim · model-written summary
The K by Zn interaction was not significant for yield, uptake or soil fractions.
- Taxon
- wheatTriticum aestivumt0
- Outcome
- yield, uptake, and various K and Zn fractionse0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“interaction between K and Zn was not found to be significant in respect of yield, uptake, and various K and Zn fractions.”
t0“Zinc fertilization in wheat”
Claim · model-written summary
Water-soluble K was positively correlated with exchangeable K at r= 0.928.
- Taxon
- wheatTriticum aestivumt0
- Outcome
- Water-soluble Ke0
- Direction
- positivee0
- Value
- r= 0.928e0
- Comparator
- exchangeable Ke0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Water-soluble K showed significant and positive correlation with exchangeable K (r= 0.928), Morgan’s extractable K (r= 0.983) and lattice K (r= 0.969)”
t0“Zinc fertilization in wheat”
Claim · model-written summary
Water-soluble K was positively correlated with Morgan’s extractable K at r= 0.983.
- Taxon
- wheatTriticum aestivumt0
- Outcome
- Water-soluble Ke0
- Direction
- positivee0
- Value
- r= 0.983e0
- Comparator
- Morgan’s extractable Ke0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Water-soluble K showed significant and positive correlation with exchangeable K (r= 0.928), Morgan’s extractable K (r= 0.983) and lattice K (r= 0.969)”
t0“Zinc fertilization in wheat”
Claim · model-written summary
Water-soluble K was positively correlated with lattice K at r= 0.969.
- Taxon
- wheatTriticum aestivumt0
- Outcome
- Water-soluble Ke0
- Direction
- positivee0
- Value
- r= 0.969e0
- Comparator
- lattice Ke0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Water-soluble K showed significant and positive correlation with exchangeable K (r= 0.928), Morgan’s extractable K (r= 0.983) and lattice K (r= 0.969)”
t0“Zinc fertilization in wheat”
Claim · model-written summary
Regression identified water soluble and lattice K as important for crop yield.
- Taxon
- wheatTriticum aestivume0
- Compound
- water soluble K and lattice Ke0
- Outcome
- crop yielde0
Not reportedDirection
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Step wise regression analysis using different pools of K revealed the importance of water soluble K and lattice K influencing crop yield, K uptake by wheat.”
Claim · model-written summary
Regression identified water soluble and lattice K as important for wheat K uptake.
- Taxon
- wheatTriticum aestivume0
- Compound
- water soluble K and lattice Ke0
- Outcome
- K uptake by wheate0
Not reportedDirection
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Step wise regression analysis using different pools of K revealed the importance of water soluble K and lattice K influencing crop yield, K uptake by wheat.”
Claim · model-written summary
Application of 9 kg Zn/ha increased soil Zn fractions.
- Taxon
- wheatTriticum aestivumt0
- Treatment
- application of 9 kg Zn/hae0
- Outcome
- Zn fractions present in soile0
- Direction
- increasede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“application of 9 kg Zn/ha increased the Zn fractions present in soil”
t0“Zinc fertilization in wheat”
Claim · model-written summary
Soil Zn fractions were in dynamic equilibrium with each other.
- Taxon
- wheatTriticum aestivumt0
- Outcome
- these fractions are in a state of dynamic equilibrium with each othere0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“correlation data indicated that these fractions are in a state of dynamic equilibrium with each other.”
t0“Zinc fertilization in wheat”
Claim · model-written summary
DTPA-Zn accounted for 65% of grain yield variation.
- Taxon
- wheatTriticum aestivume0
- Compound
- DTPA-Zne0
- Outcome
- variation in grain yielde0
- Value
- 65%e0
Not reportedDirection
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“DTPA-Zn accounted for 65% and 70% of the variation in grain yield and Zn uptake by wheat”
Claim · model-written summary
DTPA-Zn accounted for 70% of wheat Zn uptake variation.
- Taxon
- wheatTriticum aestivume0
- Compound
- DTPA-Zne0
- Outcome
- Zn uptake by wheate0
- Value
- 70%e0
Not reportedDirection
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“DTPA-Zn accounted for 65% and 70% of the variation in grain yield and Zn uptake by wheat”
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